CN104244434A - Repeater system resource self-adaption scheduling method based on LTE - Google Patents

Abstract

Disclosed is a repeater system resource self-adaption scheduling method based on LTE. The resource self-adaption scheduling method aims at a multi-user repeater system in an LTE system, and resource scheduling is carried out under the condition of guaranteeing fairness of downlink communication users. Repeater selection, joint optimization is carried out on subcarrier scheduling and power scheduling involved in the resource scheduling process, and the optimal resource scheduling method is given.

Description

A kind of direct discharging station resource-adaptive dispatching method based on LTE

Technical field

The present invention relates to mobile communication technology field, particularly relate to a kind of direct discharging station resource-adaptive dispatching method based on LTE.

Background technology

LTE (Long Term Evolution) is the Long Term Evolution of UMTS (universal mobile telecommunications system) technical standard organized to set up by 3GPP (third generation partner program).LTE system introduces the critical transmissions technology such as OFDM and MIMO, significantly increase spectrum efficiency and data transmission rate, and support that various bandwidth is dispatched: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz etc., and support global main flow 2G/3G frequency range and some newly-increased frequency ranges, thus frequency spectrum scheduling is more flexible, and power system capacity and covering also significantly promote.The LTE system network architecture more flattening is simplified, and decreases network node and system complexity, thus reduces Time Delay of Systems, also reduce network design and maintenance cost.LTE system is supported and other 3GPP interoperability of system.LTE system has two kinds of standard: FDD-LTE and TDD-LTE, i.e. Frequency Division Duplexing (FDD) LTE system and time division duplex LTE system, and the main distinction of the two technology is in the physical layer of air interface (picture frame structure, time-division design, synchronous etc.).

But, there is the problem of coverage hole equally in LTE technology, in order to overcome this problem, generally that to carry out based on the repeater of LTE technology benefits blind and cover extension by arranging, owing to will select suitable repeater transmission data to different users, and need to carry out subcarrier and scheduling of resource to base station and repeater simultaneously, need to ensure the fairness between user simultaneously, be multi-user services better, therefore, how more effectively carrying out the scheduling of resource such as subcarrier is more and more important research topic.

Summary of the invention

The object of the invention is to be achieved through the following technical solutions.

According to the embodiment of the present invention, propose a kind of direct discharging station resource-adaptive dispatching method based on LTE, said method comprising the steps of:

The initial value of S1, time predefined interval indication parameter and user's average data transfer rate;

The initial value of S2, predefine loop computation number of turns counting, power adaptive regulating parameter, regulates channel condition information;

S3, computational resource scheduling result;

S4, adjustment loop computation number of turns counting, power adaptive regulating parameter;

S5, judge whether repeating power approaches restriction value, if approach restriction value, enter step S6, if do not approach restriction value, return step S3;

S6, adjustment user average data transfer rate;

S7, regulating time interval indication parameter, and the resource scheduling scheme returning that step S2 calculates following time interval.

According to the embodiment of the present invention, the initial value of described step S1 time predefined interval indication parameter and user's average data transfer rate, specifically comprises: set time interval indication parameter as t, for each user m=1 in system ..., M, with represent the average data transfer rate of the user m calculated at time interval t, the average data transfer rate of user m when being predefined in time interval t=0 for being more than or equal to the value of zero, M is the total number of users in system.

According to the embodiment of the present invention, the predefine loop computation number of turns counting of described step S2, the initial value of power adaptive regulating parameter, regulate channel condition information specifically to comprise:

If the loop computation number of turns is counted as i, for each repeater k=1 ..., K, with μ _ki () represents the power adaptive regulating parameter of repeater k at loop computation number of turns counting i, η (i) represents the power adaptive regulating parameter of base station at loop computation number of turns counting i, and predefine repeater k is at the power adaptive regulating parameter μ of loop computation number of turns counting i=0 _k(0) and base station the loop computation number of turns counting i=0 power adaptive regulating parameter η (0) be nonnegative number, K is the repeater number in system;

The channel condition information that base station s feeds back according to repeater regulates the information stored: for all repeater k=1 ..., K, and user m=1 ..., M, regulates the channel impulse response of base station s to repeater k on subcarrier n regulate the channel impulse response of repeater k to user m on subcarrier n regulate the path fading l between base station s and repeater k _sk, regulate the path fading l between repeater k and user m _km.

According to the embodiment of the present invention, the computational resource scheduling result of described step S3 specifically comprises:

Note system sub-carriers adds up to N, for each subcarrier n=1 ..., N, according to the average data transfer rate of current each user base station power Automatic adjusument parameter η (i), repeater power adaptive regulating parameter μ _k(i), and the channel impulse response of base station s to repeater k on subcarrier n the channel impulse response of repeater k to user m on subcarrier n path fading l between base station s and repeater k _sk, the path fading between repeater k and user m, calculates current power dispatching result on this carrier wave and the scheduling result of this carrier wave on link respectively;

Power dispatching result is drawn below by the listed repeating power formula (1) of repeater k to user m on subcarrier n:

$p_{\mathrm{km}}^n={[\frac{W/2N}{{\mathrm{\Φ}}_{\mathrm{km}}^n\stackrel{\‾}{R_m}\left(1\right)\ln 2}-\frac{1}{g_{\mathrm{km}}^n}]}^{+}---\left(1\right)$

In formula (1), W is overall system bandwidth, is divided into N number of subcarrier, [x] ⁺=max{x, 0}, namely represent the higher value in peek value x and 0, previous intermediate variable with a rear intermediate variable be respectively

${\mathrm{\Φ}}_{\mathrm{km}}^n={\mathrm{\μ}}_k\left(i\right)+\frac{\mathrm{\η}\left(i\right)l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}---\left(2\right)$

$g_{\mathrm{km}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N}---\left(3\right)$

N in formula (3) ₀for the noise power spectral density in system, Γ is the function of target error rate BER, Γ=-ln (5BER)/1.5;

According to the repeating power of repeater k to user m on subcarrier n that the repeating power formula (1) of repeater k to user m on subcarrier n is tried to achieve value, calculate the data transmission rate of repeater k to user m on subcarrier n:

$r_{\mathrm{km}}^n=\frac{W}{2N}{\log }_2(1+\frac{p_{\mathrm{km}}^n{l}_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N})---\left(4\right)$

According to the data transmission rate that the data transmission rate formula (4) of repeater k to user m on subcarrier n is tried to achieve carry out subcarrier scheduling: for certain subcarrier n, first choose maximum (k, m) combination, namely

${(k}^{*},m^{*})=\arg \underset{k,m}{\max }\frac{r_{\mathrm{km}}^n}{\stackrel{\‾}{R_m}\left(t\right)}---\left(5\right)$

Then subcarrier n is dispatched to (the k chosen ^*, m ^*), namely dispatch to repeater k ^*to user m ^*link; Definition represents the indicator variable of carrier dispatching represent and carrier wave n is dispatched to the link of repeater k to user m, otherwise, indicator variable for repeater k ^*to user m ^*link, indicator variable and for repeater k ^*to user m ^*other links in addition, namely for repeater k ≠ k ^*to user m ≠ m ^*link, indicator variable be formulated as:

${\mathrm{\ρ}}_{k^{*}{m}^{*}}^n=1,{\mathrm{\ρ}}_{\mathrm{km}}^n=0,\∀k\≠k^{*},m\≠m^{*}---\left(6\right)$

Then base station is calculated to the repeating power of repeater k on subcarrier n by following formula:

$p_{\mathrm{sk}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}{p}_{\mathrm{km}}^n,$ When ${\mathrm{\ρ}}_{\mathrm{km}}^n=1$ Time (7).

According to the embodiment of the present invention, described step S4 adjustment loop computation number of turns counting, power adaptive regulating parameter specifically comprises:

Regulate loop computation number of turns counting i=i+1, and adopt formula below to regulate repeater and base station power Automatic adjusument parameter:

${\mathrm{\μ}}_k(i+1)={[{\mathrm{\μ}}_k\left(i\right)-{\mathrm{\α}}_1\left(i\right)(P_k^{\max }-\underset{m-1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{km}}^n)]}^{+},k=1,...,K---\left(8\right)$

$\mathrm{\η}(i+1)={[\mathrm{\η}\left(i\right)-{\mathrm{\α}}_2\left(i\right)(P_{\mathrm{BS}}^{\max }-\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{sk}}^n)]}^{+}---\left(9\right)$

Wherein represent the maximum power restriction of repeater k, represent the maximum power restriction of base station, α ₁(i) and α ₂i () is loop computation step-length.

According to the embodiment of the present invention, described step S5 specifically comprises: regulate formula (8) and base station power Automatic adjusument parameter to regulate the result of calculation of formula (9) according to the repeater power adaptive regulating parameter in step S4, judge whether repeating power approaches restriction value, if do not approach restriction value, then return S3, if approach restriction value, enter S6.

According to the embodiment of the present invention, described step S6 specifically comprises: for user m=1 ..., M, the carrier wave calculated according to S3 to S5 loop computation and power dispatching result, by instant data transmission rate computing formula

$R_m\left(t\right)=\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}_{\mathrm{km}}^n{r}_{\mathrm{km}}^n,m=1,...,M---\left(10\right)$

Calculate current instant data transmission rate R _m(t), and press average data transfer rate computing formula

$\stackrel{\‾}{R_m}(t+1)=(1-\frac{1}{T})\stackrel{\‾}{R_m}\left(t\right)+\frac{1}{T}{R}_m\left(t\right)---\left(11\right)$

Regulate average data transfer rate in formula, T is translation frame width.

According to the embodiment of the present invention, described step S7 specifically comprises: regulating time interval t=t+1, returns the resource scheduling scheme that S2 calculates following time interval.

Compared with prior art, resource-adaptive dispatching method of the present invention for be the multi-user's direct discharging station be of universal significance in LTE system, and be in the scheduling of resource ensureing to carry out in fairness situation between downlink communication user; The repeater related in scheduling of resource process is selected by the present invention, subcarrier is dispatched and power dispatching problem carries out combined optimization, gives optimum resource regulating method.The present invention is the most suitable repeater of each sub-carrier selection, and dispatched to optimum repeater-user link, adaptive power scheduling is carried out in base station and each repeater on each subcarrier simultaneously, by introducing power adaptive regulating parameter, through several times loop computation, can ensure that gross power approaches restriction value, therefore can the throughput of optimization system.

Accompanying drawing explanation

By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:

Figure 1 show the direct discharging station resource-adaptive dispatching method flow chart based on LTE according to embodiment of the present invention.

Embodiment

Below with reference to accompanying drawings illustrative embodiments of the present disclosure is described in more detail.Although show illustrative embodiments of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the execution mode of setting forth here.On the contrary, provide these execution modes to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.

According to the embodiment of the present invention, propose a kind of direct discharging station resource-adaptive dispatching method based on LTE, as shown in Figure 1, said method comprising the steps of:

The initial value of S1, time predefined interval indication parameter and user's average data transfer rate, specifically comprises: set time interval indication parameter as t, for each user m=1 in system ..., M, with represent the average data transfer rate of the user m calculated at time interval t, the average data transfer rate of user m when being predefined in time interval t=0 for being more than or equal to the value of zero, M is the total number of users in system;

The initial value of S2, predefine loop computation number of turns counting, power adaptive regulating parameter, regulates channel condition information, specifically comprises: establish the loop computation number of turns to be counted as i, for each repeater k=1 ..., K, with μ _ki () represents the power adaptive regulating parameter of repeater k at loop computation number of turns counting i, η (i) represents the power adaptive regulating parameter of base station at loop computation number of turns counting i, and predefine repeater k is at the power adaptive regulating parameter μ of loop computation number of turns counting i=0 _k(0) and base station the loop computation number of turns counting i=0 power adaptive regulating parameter η (0) be nonnegative number, K is the repeater number in system;

The channel condition information that base station s feeds back according to repeater regulates the information stored: for all repeater k=1 ..., K, and user m=1 ..., M, regulates the channel impulse response of base station s to repeater k on subcarrier n regulate the channel impulse response of repeater k to user m on subcarrier n regulate the path fading l between base station s and repeater k _sk, regulate the path fading l between repeater k and user m _km.

S3, computational resource scheduling result, specifically comprise: note system sub-carriers adds up to N, for each subcarrier n=1 ..., N, according to the average data transfer rate of current each user base station power Automatic adjusument parameter η (i), repeater power adaptive regulating parameter μ _k(i), and the channel impulse response of base station s to repeater k on subcarrier n the channel impulse response of repeater k to user m on subcarrier n path fading l between base station s and repeater k _sk, the path fading between repeater k and user m, calculates current power dispatching result on this carrier wave and the scheduling result of this carrier wave on link respectively;

Power dispatching result is drawn below by the listed repeating power formula (1) of repeater k to user m on subcarrier n:

$p_{\mathrm{km}}^n={[\frac{W/2N}{{\mathrm{\Φ}}_{\mathrm{km}}^n\stackrel{\‾}{R_m}\left(1\right)\ln 2}-\frac{1}{g_{\mathrm{km}}^n}]}^{+}---\left(1\right)$

In formula (1), W is overall system bandwidth, is divided into N number of subcarrier, [x] ⁺=max{x, 0}, namely represent the higher value in peek value x and 0, previous intermediate variable with a rear intermediate variable be respectively

${\mathrm{\Φ}}_{\mathrm{km}}^n={\mathrm{\μ}}_k\left(i\right)+\frac{\mathrm{\η}\left(i\right)l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}---\left(2\right)$

$g_{\mathrm{km}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N}---\left(3\right)$

N in formula (3) ₀for the noise power spectral density in system, Γ is the function of target error rate BER, Γ=-ln (5BER)/1.5;

According to the repeating power of repeater k to user m on subcarrier n that the repeating power formula (1) of repeater k to user m on subcarrier n is tried to achieve value, calculate the data transmission rate of repeater k to user m on subcarrier n:

$r_{\mathrm{km}}^n=\frac{W}{2N}{\log }_2(1+\frac{p_{\mathrm{km}}^n{l}_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N})---\left(4\right)$

According to the data transmission rate that the data transmission rate formula (4) of repeater k to user m on subcarrier n is tried to achieve carry out subcarrier scheduling: for certain subcarrier n, first choose maximum (k, m) combination, namely

${(k}^{*},m^{*})=\arg \underset{k,m}{\max }\frac{r_{\mathrm{km}}^n}{\stackrel{\‾}{R_m}\left(t\right)}---\left(5\right)$

Then subcarrier n is dispatched to (the k chosen ^*, m ^*), namely dispatch to repeater k ^*to user m ^*link; Definition represents the indicator variable of carrier dispatching represent and carrier wave n is dispatched to the link of repeater k to user m, otherwise, indicator variable for repeater k ^*to user m ^*link, indicator variable and for repeater k ^*to user m ^*other links in addition, namely for repeater k ≠ k ^*to user m ≠ m ^*link, indicator variable be formulated as:

${\mathrm{\ρ}}_{k^{*}{m}^{*}}^n=1,{\mathrm{\ρ}}_{\mathrm{km}}^n=0,\∀k\≠k^{*},m\≠m^{*}---\left(6\right)$

Then base station is calculated to the repeating power of repeater k on subcarrier n by following formula:

$p_{\mathrm{sk}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}{p}_{\mathrm{km}}^n,$ When ${\mathrm{\ρ}}_{\mathrm{km}}^n=1$ Time (7).

S4, adjustment loop computation number of turns counting, power adaptive regulating parameter, specifically comprise: regulate loop computation number of turns counting i=i+1, and adopt formula adjustment repeater below and base station power Automatic adjusument parameter:

${\mathrm{\μ}}_k(i+1)={[{\mathrm{\μ}}_k\left(i\right)-{\mathrm{\α}}_1\left(i\right)(P_k^{\max }-\underset{m-1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{km}}^n)]}^{+},k=1,...,K---\left(8\right)$

$\mathrm{\η}(i+1)={[\mathrm{\η}\left(i\right)-{\mathrm{\α}}_2\left(i\right)(P_{\mathrm{BS}}^{\max }-\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{sk}}^n)]}^{+}---\left(9\right)$

Wherein represent the maximum power restriction of repeater k, represent the maximum power restriction of base station, α ₁(i) and α ₂i () is loop computation step-length.

S5, regulate the result of calculation of formula (8) and base station power Automatic adjusument parameter adjustment formula (9) according to the repeater power adaptive regulating parameter in step S4, judge whether repeating power approaches restriction value, if do not approach restriction value, then return S3, if approach restriction value, enter S6;

S6, for user m=1 ..., M, the carrier wave calculated according to S3 to S5 loop computation and power dispatching result, by instant data transmission rate computing formula

$R_m\left(t\right)=\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}_{\mathrm{km}}^n{r}_{\mathrm{km}}^n,m=1,...,M---\left(10\right)$

Calculate current instant data transmission rate R _m(t), and press average data transfer rate computing formula

$\stackrel{\‾}{R_m}(t+1)=(1-\frac{1}{T})\stackrel{\‾}{R_m}\left(t\right)+\frac{1}{T}{R}_m\left(t\right)---\left(11\right)$

Regulate average data transfer rate in formula, T is translation frame width.

S7, regulating time interval indication parameter t=t+1, return the resource scheduling scheme that S2 calculates following time interval.

The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims (8)

1., based on a direct discharging station resource-adaptive dispatching method of LTE, said method comprising the steps of:

The initial value of S1, time predefined interval indication parameter and user's average data transfer rate;

The initial value of S2, predefine loop computation number of turns counting, power adaptive regulating parameter, regulates channel condition information;

S3, computational resource scheduling result;

S4, adjustment loop computation number of turns counting, power adaptive regulating parameter;

S5, judge whether repeating power approaches restriction value, if approach restriction value, enter step S6, if do not approach restriction value, return step S3;

S6, adjustment user average data transfer rate;

S7, regulating time interval indication parameter, and the resource scheduling scheme returning that step S2 calculates following time interval.

2. a method of claim 1, the initial value of described step S1 time predefined interval indication parameter and user's average data transfer rate, specifically comprises: set time interval indication parameter as t, for each user m=1 in system ..., M, with represent the average data transfer rate of the user m calculated at time interval t, the average data transfer rate of user m when being predefined in time interval t=0 for being more than or equal to the value of zero, M is the total number of users in system.

3. a method as claimed in claim 2, the predefine loop computation number of turns counting of described step S2, the initial value of power adaptive regulating parameter, regulate channel condition information specifically to comprise:

If the loop computation number of turns is counted as i, for each repeater k=1 ..., K, with μ _ki () represents the power adaptive regulating parameter of repeater k at loop computation number of turns counting i, η (i) represents the power adaptive regulating parameter of base station at loop computation number of turns counting i, and predefine repeater k is at the power adaptive regulating parameter μ of loop computation number of turns counting i=0 _k(0) and base station the loop computation number of turns counting i=0 power adaptive regulating parameter η (0) be nonnegative number, K is the repeater number in system;

The channel condition information that base station s feeds back according to repeater regulates the information stored: for all repeater k=1 ..., K, and user m=1 ..., M, regulates the channel impulse response of base station s to repeater k on subcarrier n regulate the channel impulse response of repeater k to user m on subcarrier n regulate the path fading l between base station s and repeater k _sk, regulate the path fading l between repeater k and user m _km.

4. a method as claimed in claim 3, the computational resource scheduling result of described step S3 specifically comprises:

Note system sub-carriers adds up to N, for each subcarrier n=1 ..., N, according to the average data transfer rate of current each user base station power Automatic adjusument parameter η (i), repeater power adaptive regulating parameter μ _k(i), and the channel impulse response of base station s to repeater k on subcarrier n the channel impulse response of repeater k to user m on subcarrier n path fading l between base station s and repeater k _sk, the path fading between repeater k and user m, calculates current power dispatching result on this carrier wave and the scheduling result of this carrier wave on link respectively;

Power dispatching result is drawn below by the listed repeating power formula (1) of repeater k to user m on subcarrier n:

$p_{\mathrm{km}}^n={[\frac{W/2N}{{\mathrm{\Φ}}_{\mathrm{km}}^n\stackrel{\‾}{R_m}\left(1\right)\ln 2}-\frac{1}{g_{\mathrm{km}}^n}]}^{+}---\left(1\right)$

In formula (1), W is overall system bandwidth, is divided into N number of subcarrier, [x] ⁺=max{x, 0}, namely represent the higher value in peek value x and 0, previous intermediate variable with a rear intermediate variable be respectively

${\mathrm{\Φ}}_{\mathrm{km}}^n={\mathrm{\μ}}_k\left(i\right)+\frac{\mathrm{\η}\left(i\right)l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}---\left(2\right)$

$g_{\mathrm{km}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N}---\left(3\right)$

N in formula (3) ₀for the noise power spectral density in system, Γ is the function of target error rate BER, Γ=-ln (5BER)/1.5;

According to the repeating power of repeater k to user m on subcarrier n that the repeating power formula (1) of repeater k to user m on subcarrier n is tried to achieve value, calculate the data transmission rate of repeater k to user m on subcarrier n:

$r_{\mathrm{km}}^n=\frac{W}{2N}{\log }_2(1+\frac{p_{\mathrm{km}}^n{l}_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{{\mathrm{\ΓWN}}_0/N})---\left(4\right)$

According to the data transmission rate that the data transmission rate formula (4) of repeater k to user m on subcarrier n is tried to achieve carry out subcarrier scheduling: for certain subcarrier n, first choose maximum (k, m) combination, namely

${(k}^{*},m^{*})=\arg \underset{k,m}{\max }\frac{r_{\mathrm{km}}^n}{\stackrel{\‾}{R_m}\left(t\right)}---\left(5\right)$

Then subcarrier n is dispatched to (the k chosen ^*, m ^*), namely dispatch to repeater k ^*to user m ^*link; Definition represents the indicator variable of carrier dispatching represent and carrier wave n is dispatched to the link of repeater k to user m, otherwise, indicator variable for repeater k ^*to user m ^*link, indicator variable and for repeater k ^*to user m ^*other links in addition, namely for repeater k ≠ k ^*to user m ≠ m ^*link, indicator variable be formulated as:

${\mathrm{\ρ}}_{k^{*}{m}^{*}}^n=1,{\mathrm{\ρ}}_{\mathrm{km}}^n=0,\∀k\≠k^{*},m\≠m^{*}---\left(6\right)$

Then base station is calculated to the repeating power of repeater k on subcarrier n by following formula:

$p_{\mathrm{sk}}^n=\frac{l_{\mathrm{km}}{\left|h_{\mathrm{km}}^n\right|}^2}{l_{\mathrm{sk}}{\left|h_{\mathrm{sk}}^n\right|}^2}{p}_{\mathrm{km}}^n,$ When ${\mathrm{\ρ}}_{\mathrm{km}}^n=1$ Time (7).

5. a method as claimed in claim 4, the adjustment loop computation number of turns counting of described step S4, power adaptive regulating parameter specifically comprise:

Regulate loop computation number of turns counting i=i+1, and adopt formula below to regulate repeater and base station power Automatic adjusument parameter:

${\mathrm{\μ}}_k(i+1)={[{\mathrm{\μ}}_k\left(i\right)-{\mathrm{\α}}_1\left(i\right)(P_k^{\max }-\underset{m-1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{km}}^n)]}^{+},k=1,...,K---\left(8\right)$

$\mathrm{\η}(i+1)={[\mathrm{\η}\left(i\right)-{\mathrm{\α}}_2\left(i\right)(P_{\mathrm{BS}}^{\max }-\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{p}_{\mathrm{sk}}^n)]}^{+}---\left(9\right)$

Wherein represent the maximum power restriction of repeater k, represent the maximum power restriction of base station, α ₁(i) and α ₂i () is loop computation step-length.

6. a method as claimed in claim 5, described step S5 specifically comprises: regulate formula (8) and base station power Automatic adjusument parameter to regulate the result of calculation of formula (9) according to the repeater power adaptive regulating parameter in step S4, judge whether repeating power approaches restriction value, if do not approach restriction value, then return S3, if approach restriction value, enter S6.

7. a method as claimed in claim 6, described step S6 specifically comprises: for user m=1 ..., M, the carrier wave calculated according to S3 to S5 loop computation and power dispatching result, by instant data transmission rate computing formula

$R_m\left(t\right)=\underset{k=1}{\overset{K}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{\mathrm{\ρ}}_{\mathrm{km}}^n{r}_{\mathrm{km}}^n,m=1,...,M---\left(10\right)$

Calculate current instant data transmission rate R _m(t), and press average data transfer rate computing formula

$\stackrel{\‾}{R_m}(t+1)=(1-\frac{1}{T})\stackrel{\‾}{R_m}\left(t\right)+\frac{1}{T}{R}_m\left(t\right)---\left(11\right)$

Regulate average data transfer rate in formula, T is translation frame width.

8. a method as claimed in claim 7, described step S7 specifically comprises: regulating time interval t=t+1, returns the resource scheduling scheme that S2 calculates following time interval.