CN101345975B - Method and apparatus for space division multiple access resource scheduling, and radio communication system - Google Patents

Abstract

The invention provides a space division multiple access resource scheduling method, device and wireless communication system, wherein the method comprises: spatial isolation degree measuring step of obtaining spatial isolation parameter between mobile terminals; system resource scheduling step of realizing system resource multiplexing between mobile terminals, based on spatial isolation parameter between mobile terminals; if the spatial isolation parameter between mobile terminals can not satisfy requirement, the system resource between mobile terminals can be divided, therefore the space division multiple access resource can be scheduled.

Description

A kind of method of space division multiple access resource scheduling, device and wireless communication system

Technical field

The present invention relates to wireless communication system, be specifically related to a kind of space division multiple access resource scheduling method, device and wireless communication system.

Background technology

Space division multiple access (SDMA, Spatial Division Multiple Access) usually is closely connected with the intelligent antenna technology existence.Smart antenna is based on aerial array, utilize the spatial character and the Digital Signal Processing of signal transmission, spatial distribution according to signal, interference and noise, realize estimation of figuration weight vector and down beam shaping, promptly the useful signal direction in expectation forms main beam, the interference and the noise that suppress other direction are included in and form zero falling on certain interference radiating way.

Space division multiple access is according to the spatial transmission characteristic of different mobile terminal signal, utilize spatial selectivity, for the scheduling of corresponding portable terminal with distribute different space channels, multiplexing with system resources such as realization time, frequency, code channels, increase power system capacity and purposes such as transmission rate, raising resource utilization ratio thereby reach.

Patent " SDMA for WCDMA " (US207/0019535A1) is divided a plurality of bunches (Cluster) according to the space characteristics of portable terminal, every bunch of Walsh (Walsh) sequence of distributing a scrambler and a plurality of quadratures, the Walsh sequence reusable between different bunches.This method utilizes space division multiple access technique to realize the multiplexing of code channel resource, but under the bigger situation of multipath angular spectrum expansion, can't judge the space isolation between portable terminal exactly, may cause bunch a division difficulty even a mistake, thereby cause system interference to increase and the grid decreased performance.

Summary of the invention

For addressing the above problem, the object of the present invention is to provide a kind of method, device and wireless communication system of space division multiple access resource scheduling, to improve space division multi-access scheduling of resource performance.

For achieving the above object, the invention provides a kind of method of space division multiple access resource scheduling, wherein, comprising:

One space isolation measuring and calculating step is used to obtain the spatial separation parameter between portable terminal;

One system resource scheduling step is according to the space isolation parameter between described portable terminal; Carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing,, then the system resource between portable terminal is distinguished if the space isolation parameter between described portable terminal does not meet the demands.

The method of above-mentioned space division multiple access resource scheduling, wherein, described space isolation measuring and calculating step further comprises:

Obtain the step of main peak power with three characteristic parameters of the ratio of secondary peak power of the ratio of characteristic value of Bo Dajiao, space covariance matrix of portable terminal signal and power angular spectrum.

The method of above-mentioned space division multiple access resource scheduling, wherein, described system resource scheduling step further comprises:

The threshold value of described three characteristic parameters is set, judge whether described three characteristic parameters have all surpassed corresponding threshold value, if all surpassed, then the space isolation between two portable terminals meets the demands, realize that simultaneously system resource is multiplexing between described two portable terminals, if all do not surpass, then the system resource between described two portable terminals is distinguished.

The method of above-mentioned space division multiple access resource scheduling, wherein, described system resource further comprises: time, frequency and/or code channel.

The method of above-mentioned space division multiple access resource scheduling, wherein, described space isolation measuring and calculating step further comprises:

Step 51 is constructed corresponding space covariance matrix according to the upward signal or the channel estimating of each portable terminal on the aerial array;

Step 52, according to the space covariance matrix of described each portable terminal, the ripple of estimating power maximum path signal reaches angular dimensions;

Step 53 is carried out feature decomposition to the space covariance matrix of described each portable terminal, obtains the ratio parameter of eigenvalue of maximum and inferior big characteristic value;

Step 54 is set peak value window, based on described eigenvalue of maximum characteristic of correspondence vector, and the ratio parameter of the main peak power of rated output angular spectrum and secondary peak power.

The method of above-mentioned space division multiple access resource scheduling, wherein, described system resource scheduling step further comprises:

Step 61, ripple reaches angle thresholding, the portable terminal eigenvalue of maximum and time characteristic value ratio thresholding of big characteristic value and the power ratio thresholding of portable terminal main peak power and secondary peak power at angle between the setting portable terminal;

Step 62, if reaching the difference at angle, the ripple of two portable terminals surpasses the angle thresholding, simultaneously the eigenvalue of maximum of each portable terminal and the ratio of inferior big characteristic value are all above characteristic value ratio thresholding, and the power angular spectrum main peak power of portable terminal surpasses the power ratio thresholding with the ratio of secondary peak power separately, then the space isolation between two portable terminals meets the demands, and realizes that simultaneously the system resource of time, frequency and code channel is multiplexing; Otherwise, on time, frequency and code channel system resource, distinguish.

For achieving the above object, the present invention also provides a kind of device of space division multiple access resource scheduling, is arranged in the base station, wherein, comprising:

One space isolation measuring and calculating module is used to calculate the space isolation parameter between portable terminal; With

One system resource scheduler module, be used for according to the space isolation parameter between described portable terminal, carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing, if the space isolation parameter between described portable terminal does not meet the demands, then the system resource between portable terminal is distinguished.

The device of above-mentioned space division multiple access resource scheduling, wherein, described space isolation parameter further comprises: the ratio of the ratio of the Bo Dajiao of portable terminal signal, the characteristic value of space covariance matrix and the main peak power of power angular spectrum and secondary peak power.

The device of above-mentioned space division multiple access resource scheduling, wherein, described system resource scheduler module further comprises:

One parameter threshold setting module is used to be provided with the threshold value of main peak power with three characteristic parameters of the ratio of secondary peak power of the ratio of characteristic value of Bo Dajiao, space covariance matrix of described portable terminal signal and power angular spectrum;

One parameter judge module, be used to judge whether described three characteristic parameters have all surpassed corresponding threshold value, if all surpassed, then the space isolation between two portable terminals meets the demands, realize that simultaneously system resource is multiplexing between described two portable terminals, if all do not surpass, then the system resource between described two portable terminals is distinguished.

For achieving the above object, the present invention also provides a kind of wireless communication system of realizing said method, comprising: base station and a plurality of portable terminal is characterized in that described base station further comprises:

One space isolation measuring and calculating module is used to calculate the space isolation parameter between portable terminal; With

One system resource scheduler module, be used for according to the space isolation parameter between described portable terminal, carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing, if the space isolation parameter between described portable terminal does not meet the demands, then the system resource between portable terminal is distinguished.

The present invention has provided a kind of space division multiple access resource scheduling method, based on the main peak power of the ratio of the characteristic value of the Bo Dajiao of portable terminal signal, space covariance matrix and power angular spectrum and three characteristic parameters of ratio of secondary peak power, judge the space isolation between the portable terminal, and realize the system resource scheduling of space division multiple access in view of the above.When the space isolation between the portable terminal meets the demands, can realize simultaneously that then system resources such as time, frequency and code channel are multiplexing, reaching increases power system capacity and purposes such as transmission rate, raising resource utilization ratio; Otherwise, can't realize the space division multiplexing of system resource between the portable terminal, promptly must be distinguished at aspects such as time, frequency or code channels.

Description of drawings

Fig. 1 is the schematic diagram of a kind of space division multiple access resource scheduling of embodiment of the invention system;

Fig. 2 is the schematic diagram of system resource scheduler module;

Fig. 3 is the overview flow chart of a kind of space division multiple access resource scheduling method of the embodiment of the invention;

Fig. 4 is the flow chart of a kind of space division multiple access resource scheduling method step one of the embodiment of the invention;

Fig. 5 is the flow chart of a kind of space division multiple access resource scheduling method step two of the embodiment of the invention.

Embodiment

As shown in Figure 1, the present invention can provide a kind of wireless communication system of space division multiple access resource scheduling, this system comprises a plurality of portable terminals 20 in base station 10 and the sub-district, also comprise space division multiple access resource scheduling device 100 provided by the invention in the base station 10, this device 100 further comprises: a space isolation is calculated module 110, is used to calculate the space isolation of 20 of portable terminals; With a system resource scheduler module 120, be used for space isolation parameter according to 20 of portable terminals, carry out the system resource scheduling of space division multiple access, when the space isolation parameter of 20 of portable terminals meets the demands, the system resource that realizes 20 of portable terminals is multiplexing, if the space isolation parameter that this portable terminal is 20 does not meet the demands, then the system resource of 20 of portable terminals is distinguished.

Wherein the space isolation parameter specifically comprises: three characteristic parameters of ratio of the ratio of the Bo Dajiao of portable terminal signal, the characteristic value of space covariance matrix and the main peak power of power angular spectrum and secondary peak power.

As shown in Figure 2, the schematic diagram of system resource scheduler module, this module further comprises:

One parameter threshold setting module 121 is used to be provided with the threshold value of main peak power with three characteristic parameters of the ratio of secondary peak power of the ratio of characteristic value of Bo Dajiao, space covariance matrix of portable terminal signal and power angular spectrum; One parameter judge module 122, be used to judge whether three characteristic parameters have all surpassed corresponding threshold value, if all surpassed, then the space isolation parameter between two portable terminals 20 meets the demands, realize that simultaneously 20 system resources of two portable terminals are multiplexing, if all do not surpass, then the system resource of 20 of two portable terminals is distinguished.

As shown in Figure 3, a kind of space division multiple access resource scheduling method of the embodiment of the invention is as follows:

Step S10, space isolation measuring and calculating step.The space isolation parameter of measuring and calculating between portable terminal is based on the main peak power of the ratio of the characteristic value of the Bo Dajiao of portable terminal signal, space covariance matrix and power angular spectrum and three characteristic parameters of ratio of secondary peak power.

Step S20, system resource scheduling step.According to space isolation parameter between portable terminal, (Bo Dajiao, space covariance matrix maximum that the space isolation parameter comprises the portable terminal signal with main peak power with the secondary peak power of the ratio of inferior big characteristic value and power angular spectrum three parameters of ratio).Judge the space isolation between the portable terminal, and realize the system resource scheduling of space division multiple access in view of the above.When the space isolation between the portable terminal meets the demands, can realize simultaneously that then system resources such as time, frequency and code channel are multiplexing, reaching increases power system capacity and purposes such as transmission rate, raising resource utilization ratio; Otherwise, can't realize the space division multiplexing of system resource between the portable terminal, promptly must be distinguished at aspects such as time, frequency or code channels.

Wherein, as shown in Figure 4, this space isolation measuring and calculating step further comprises the steps:

Step S102 according to the upward signal or the channel estimating of each portable terminal on the aerial array, constructs corresponding space covariance matrix.

At aerial array, upward signal matrix or the channel estimate matrix of portable terminal k are

$H^{\left(k\right)}={\left[\begin{array}{cccc}{h}_0^{(k,0)}& h_1^{(k,0)}& \·\·\·& h_{W-1}^{(k,0)}\\ h_0^{(k,1)}& h_1^{(k,1)}& \·\·\·\·& h_{W-1}^{(k,1)}\\ \·\·\·\·& \·\·\·\·& \·\·\·& \·\·\·\\ h_0^{(k,M-1)}& h_1^{(k,M-1)}& \·\·\·\·& h_{W-1}^{(k,M-1)}\end{array}\right]}_{M\×W}---\left(1\right)$

M represents the antenna channels number in the formula, and W represents that upward signal length or channel estimation window are long.

Space covariance matrix is expressed as

R ^(k)＝H ^(k)·(H ^(k)) ^H (2)

In the formula () ^HThe computing of expression conjugate transpose.

Obviously, space covariance matrix R ^(k)Be ell rice spy (Hermitian) matrix, the characteristic of correspondence value is real number so.

Step S104, based on the space covariance matrix of each portable terminal, the ripple of estimating power maximum path signal reaches angular dimensions.

In angular coverage, the up received power of correspondence is expressed as on portable terminal k, the θ direction

P ^(k)(θ)＝‖(w(θ)) ^H·H ^(k)‖ ²＝(w(θ)) ^H·R ^(k)·w(θ) (3)

‖ ‖ represents the norm computing in the formula.

The upward signal ripple of portable terminal k reaches the angle estimated statement and is shown

${\mathrm{\θ}}_n^{\left(k\right)}=\underset{\mathrm{\θ}}{f}[R^{\left(k\right)},w\left(\mathrm{\θ}\right)]---\left(4\right)$

N represents that ripple reaches the sequence number of angle estimated value in the formula; Function

Expression utilizes R ^(k)And the ripple that w (θ) carries out portable terminal k reaches the angle algorithm for estimating; W (θ) is the vector relevant with array manifold and azimuth angle theta, can adopt the steering vector of aerial array, i.e. w (θ)=a (θ).

If only exist a ripple to reach the angle estimated value, n=0, then this ripple reaches the upward signal ripple that the angle estimated value is the power maximum path correspondence of portable terminal k and reaches the angle estimated value, is expressed as

${\mathrm{\θ}}^{\left(k\right)}={\mathrm{\θ}}_0^{\left(k\right)}---\left(5\right)$

If exist a plurality of ripples to reach the angle estimated value, n=0,1 ..., then select the maximum corresponding ripple of received power wherein to reach the angle estimated value and reach the angle estimated value as the upward signal ripple of the power maximum path correspondence of portable terminal k, be expressed as

$\left\{\begin{array}{c}{\mathrm{\θ}}^{\left(k\right)}={\mathrm{\θ}}_n^{\left(k\right)}\\ n=\underset{n}{\arg }\left\{\max \left(P^{\left(k\right)}\left({\mathrm{\θ}}_n^{\left(k\right)}\right){|}_{n=\mathrm{0,1},...}\right)\right\}\end{array}\right.---\left(6\right)$

Step S106 carries out feature decomposition to the space covariance matrix of each portable terminal, calculates the ratio parameter of eigenvalue of maximum and inferior big characteristic value.

At portable terminal k, the space covariance matrix feature decomposition is expressed as

$R^{\left(k\right)}=Q^{\left(k\right)}\·{\mathrm{\Λ}}^{\left(k\right)}\·{\left(Q^{\left(k\right)}\right)}^H=\underset{i=0}{\overset{M-1}{\mathrm{\Σ}}}{\mathrm{\λ}}_i^{\left(k\right)}\·v_i^{\left(k\right)}\·{\left(v_i^{\left(k\right)}\right)}^H---\left(7\right)$

$={\mathrm{\λ}}_0^{\left(k\right)}\·V_0^{\left(k\right)}+{\mathrm{\λ}}_1^{\left(k\right)}{V}_0+...+{\mathrm{\λ}}_{M-1}^{\left(k\right)}{V}_{M-1}^{\left(k\right)}$

In the formula

$Q^{\left(k\right)}=\left[\begin{array}{cccc}{v}_0^{\left(k\right)}& v_1^{\left(k\right)}& \·\·\·& v_{M-1}^{\left(k\right)}\end{array}\right]---\left(8\right)$

${\mathrm{\Λ}}^{\left(k\right)}=\mathrm{diag}\left(\begin{array}{cccc}{\mathrm{\λ}}_0^{\left(k\right)}& {\mathrm{\λ}}_1^{\left(k\right)}& \·\·\·& {\mathrm{\λ}}_{M-1}^{\left(k\right)}\end{array}\right)---\left(9\right)$

Diag () represents diagonal matrix;

Represent corresponding characteristic vector, $V_i^{\left(k\right)}=v_i^{\left(k\right)}\·{\left(v_i^{\left(k\right)}\right)}^H;$

The characteristic value of representation space covariance matrix R (k) is by ordering from large to small, promptly ${\mathrm{\λ}}_0^{\left(k\right)}\≥{\mathrm{\λ}}_1^{\left(k\right)}\≥...\≥{\mathrm{\λ}}_{M-1}^{\left(k\right)},$ The physical meaning of characteristic value is based on the power that the space of half-power beam width can be divided, time delay can be divided multipath, and for code division multiple address communication system, time delay can be divided between the multipath uncorrelated, obviously, and under the white Gaussian noise environment, if the multipath number is L, when L＜M, then ${\mathrm{\λ}}_0^{\left(k\right)}\≥{\mathrm{\λ}}_1^{\left(k\right)}\≥...\≥{\mathrm{\λ}}_{L-1}^{\left(k\right)}\≥{\mathrm{\λ}}_L^{\left(k\right)}=...={\mathrm{\λ}}_M^{\left(k\right)}={\mathrm{\σ}}^2,$ σ ²The expression noise power.

Eigenvalue of maximum is expressed as with the ratio of inferior big characteristic value

${\mathrm{\γ}}^{\left(k\right)}=\frac{{\mathrm{\λ}}_0^{\left(k\right)}}{{\mathrm{\λ}}_1^{\left(k\right)}}---\left(10\right)$

Comprise noise power in the multipath power (being characteristic value), under the high s/n ratio situation, The noise can be ignored, and under the low signal-to-noise ratio situation, then needs to consider The noise, and eigenvalue of maximum is modified to the ratio expression formula of inferior big characteristic value

${\mathrm{\γ}}^{\left(k\right)}=\frac{{\mathrm{\λ}}_0^{\left(k\right)}-{\mathrm{\σ}}^2}{{\mathrm{\λ}}_1^{\left(k\right)}-{\mathrm{\σ}}^2}---\left(11\right)$

For the special circumstances of above-mentioned expression formula, if ${\mathrm{\λ}}_0^{\left(k\right)}={\mathrm{\λ}}_1^{\left(k\right)}={\mathrm{\σ}}^2,$ γ (k)=1 then; If ${\mathrm{\λ}}_0^{\left(k\right)}>{\mathrm{\λ}}_1^{\left(k\right)}={\mathrm{\σ}}^2,$ γ then ^(k)=∞.

Step S108 sets peak value window, based on eigenvalue of maximum characteristic of correspondence vector, and the ratio parameter of the main peak power of rated output angular spectrum and secondary peak power.

The setting peak value window is [θ ^(k)-α Ω, θ ^(k)+ α Ω], wherein Ω is the half-power main lobe width of aerial array, parameter $\mathrm{\α}\≥\frac{1}{2}.$

The eigenvalue of maximum of portable terminal k

The characteristic of correspondence vector is

, corresponding power angle stave is shown

$P_v^{\left(k\right)}\left(\mathrm{\θ}\right)={\left|\right|{\left(w\left(\mathrm{\θ}\right)\right)}^H\·v_0^{\left(k\right)}\left|\right|}^2={\left(w\left(\mathrm{\θ}\right)\right)}^H\·v_0^{\left(k\right)}\·{\left(v_0^{\left(k\right)}\right)}^H\·w\left(\mathrm{\θ}\right)---\left(12\right)$

The main peak wattmeter is shown the maximum of up received power in the peak value window, promptly

$P_p^{\left(k\right)}=\max \left(P_v^{\left(k\right)}\left(\mathrm{\θ}\right)\right){|}_{\mathrm{\θ}\∈[{\mathrm{\θ}}^{\left(k\right)}-\mathrm{\α}\·\mathrm{\Ω},{\mathrm{\θ}}^{\left(k\right)}+\mathrm{\α}\·\mathrm{\Ω}]}---\left(13\right)$

The secondary peak wattmeter is shown the power maximum outside the peak value window in angular coverage, promptly

$P_s^{\left(k\right)}=\max \left(P_v^{\left(k\right)}\left(\mathrm{\θ}\right)\right){|}_{\mathrm{\θ}\∉[{\mathrm{\θ}}^{\left(k\right)}-\mathrm{\α}\·\mathrm{\Ω},{\mathrm{\θ}}^{\left(k\right)}+\mathrm{\α}\·\mathrm{\Ω}]}---\left(14\right)$

So, the main peak power of the eigenvalue of maximum characteristic of correspondence vector power angular spectrum of portable terminal k is expressed as with the ratio of secondary peak power

${\mathrm{\ψ}}^{\left(k\right)}=\frac{P_p^{\left(k\right)}}{P_s^{\left(k\right)}}---\left(15\right)$

This system resource scheduling step specifically is divided into following 2 sub-steps, as shown in Figure 5, comprising:

Step S202, ripple reaches angle thresholding, the portable terminal eigenvalue of maximum and time characteristic value ratio thresholding of big characteristic value and the power ratio thresholding of portable terminal main peak power and secondary peak power at angle between the setting portable terminal.

To reach the angle thresholding at angle be Θ to ripple between portable terminal, and the portable terminal eigenvalue of maximum is r with time characteristic value ratio thresholding of big characteristic value, and the power ratio thresholding of portable terminal main peak power and secondary peak power is Ψ.

Step S204, if reaching the difference at angle, the ripple of two portable terminals surpasses the angle thresholding, simultaneously separately the ratio of the eigenvalue of maximum of portable terminal and inferior big characteristic value all above characteristic value ratio thresholding, and the power angular spectrum main peak power of portable terminal all surpasses the power ratio thresholding with the ratio of secondary peak power separately, then the space isolation between two portable terminals meets the demands, and can realize simultaneously that system resources such as time, frequency and code channel are multiplexing; Otherwise, can't realize the space division multiplexing of system resource between two portable terminals, promptly must be distinguished at aspects such as time, frequency or code channels.

At portable terminal k and portable terminal l, if satisfy simultaneously

$\left\{\begin{array}{c}\mathrm{\Δ\θ}=|{\mathrm{\θ}}^{\left(k\right)}-{\mathrm{\θ}}^{\left(l\right)}|\≥\mathrm{\Θ}\\ \min ({\mathrm{\γ}}^{\left(k\right)},{\mathrm{\γ}}^{\left(l\right)})\≥\mathrm{\Γ}\\ \min ({\mathrm{\ψ}}^{\left(k\right)},{\mathrm{\ψ}}^{\left(l\right)})\≥\mathrm{\Ψ}\end{array}\right.---\left(16\right)$

Then the space isolation between portable terminal k and the portable terminal l meets the demands, can realize simultaneously that system resources such as time, frequency and code channel are multiplexing, promptly the system resources such as time, frequency and code channel between portable terminal k and the portable terminal l can be in full accord; Otherwise, can't realize the space division multiplexing of system resource between portable terminal k and the portable terminal l, promptly must be distinguished at aspects such as time, frequency or code channels.

The antenna distance of aerial array is relevant with array type.Generally speaking, the antenna distance of linear array for semi-load wave-wave long; And the antenna distance of circle battle array is about 0.4～0.6 times carrier wavelength.

Angle thresholding Θ is relevant with the half-power main lobe width of aerial array, common Θ 〉=β Ω, and wherein Ω is a main lobe width, parameter beta 〉=2.

The ratio of the power between that the ratio of the eigenvalue of maximum of portable terminal space covariance matrix and inferior big characteristic value can reflect effectively that antenna for base station side, space can be divided, time delay can be divided, power maximum and inferior big two paths; The main peak power of eigenvalue of maximum characteristic of correspondence vector power angular spectrum then can reflect the power angular spectrum acutance of the inseparable multipath of time delay that reflection antenna for base station side power maximum path is corresponding effectively and compose peak number with the ratio of secondary peak power.Therefore maximum ratio and main peak with inferior big characteristic value can be weighed the expansion of portable terminal multipath angular spectrum to a certain extent effectively with two parameters of ratio of secondary peak power.

Common characteristic value ratio thresholding Γ 〉=4, power ratio thresholding Ψ 〉=2.

In sum, the present invention has provided a kind of space division multiple access resource scheduling method, based on the main peak power of the ratio of the characteristic value of the Bo Dajiao of portable terminal signal, space covariance matrix and power angular spectrum and three characteristic parameters of ratio of secondary peak power, judge the space isolation between the portable terminal, and realize the system resource scheduling of space division multiple access in view of the above.When the space isolation between the portable terminal meets the demands, can realize simultaneously that then system resources such as time, frequency and code channel are multiplexing, reaching increases power system capacity and purposes such as transmission rate, raising resource utilization ratio; Otherwise, can't realize the space division multiplexing of system resource between the portable terminal, promptly must be distinguished at aspects such as time, frequency or code channels.

Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (8)

1. the method for a space division multiple access resource scheduling is characterized in that, comprising:

One space isolation measuring and calculating step is used to obtain the spatial separation parameter between portable terminal;

One system resource scheduling step, according to the space isolation parameter between described portable terminal, carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing, if the space isolation parameter between described portable terminal does not meet the demands, then the system resource between portable terminal is distinguished;

Described space isolation measuring and calculating step further comprises: obtain the step of main peak power with three characteristic parameters of the ratio of secondary peak power of the ratio of characteristic value of Bo Dajiao, space covariance matrix of portable terminal signal and power angular spectrum, the ratio of described characteristic value is: the ratio of eigenvalue of maximum and inferior big characteristic value.

2. the method for space division multiple access resource scheduling according to claim 1 is characterized in that, described system resource scheduling step further comprises:

The threshold value of described three characteristic parameters is set, judge whether described three characteristic parameters have all surpassed corresponding threshold value, if all surpassed, then the space isolation between two portable terminals meets the demands, realize that simultaneously system resource is multiplexing between described two portable terminals, if all do not surpass, then the system resource between described two portable terminals is distinguished.

3. the method for space division multiple access resource scheduling according to claim 1 and 2 is characterized in that, described system resource further comprises: time, frequency and/or code channel.

4. the method for space division multiple access resource scheduling according to claim 3 is characterized in that, described space isolation measuring and calculating step further comprises:

Step 51 is constructed corresponding space covariance matrix according to the upward signal or the channel estimating of each portable terminal on the aerial array;

Step 52, according to the space covariance matrix of described each portable terminal, the ripple of estimating power maximum path signal reaches angular dimensions;

Step 53 is carried out feature decomposition to the space covariance matrix of described each portable terminal, obtains the ratio parameter of eigenvalue of maximum and inferior big characteristic value;

Step 54 is set peak value window, based on described eigenvalue of maximum characteristic of correspondence vector, and the ratio parameter of the main peak power of rated output angular spectrum and secondary peak power.

5. the method for space division multiple access resource scheduling according to claim 4 is characterized in that, described system resource scheduling step further comprises:

Step 61, ripple reaches angle thresholding, the portable terminal eigenvalue of maximum and time characteristic value ratio thresholding of big characteristic value and the power ratio thresholding of portable terminal main peak power and secondary peak power at angle between the setting portable terminal;

Step 62, if reaching the difference at angle, the ripple of two portable terminals surpasses the angle thresholding, simultaneously the eigenvalue of maximum of each portable terminal and the ratio of inferior big characteristic value are all above characteristic value ratio thresholding, and the power angular spectrum main peak power of portable terminal surpasses the power ratio thresholding with the ratio of secondary peak power separately, then the space isolation between two portable terminals meets the demands, and realizes that simultaneously the system resource of time, frequency and code channel is multiplexing; Otherwise, on time, frequency and code channel system resource, distinguish.

6. the device of a space division multiple access resource scheduling is arranged in the base station, it is characterized in that, comprising:

One space isolation measuring and calculating module is used to calculate the space isolation parameter between portable terminal; With

One system resource scheduler module, be used for according to the space isolation parameter between described portable terminal, carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing, if the space isolation parameter between described portable terminal does not meet the demands, then the system resource between portable terminal is distinguished;

Described space isolation parameter further comprises: the ratio of the ratio of the Bo Dajiao of portable terminal signal, the characteristic value of space covariance matrix and the main peak power of power angular spectrum and secondary peak power, the ratio of described characteristic value is: the ratio of eigenvalue of maximum and inferior big characteristic value.

7. the device of space division multiple access resource scheduling according to claim 6 is characterized in that, described system resource scheduler module further comprises:

One parameter threshold setting module is used to be provided with the threshold value of main peak power with three characteristic parameters of the ratio of secondary peak power of the ratio of characteristic value of Bo Dajiao, space covariance matrix of described portable terminal signal and power angular spectrum;

One parameter judge module, be used to judge whether described three characteristic parameters have all surpassed corresponding threshold value, if all surpassed, then the space isolation between two portable terminals meets the demands, realize that simultaneously system resource is multiplexing between described two portable terminals, if all do not surpass, then the system resource between described two portable terminals is distinguished.

8. wireless communication system of realizing claim 1,2 or 3 described methods, comprising: base station and a plurality of portable terminal is characterized in that described base station further comprises:

One space isolation measuring and calculating module is used to calculate the space isolation parameter between portable terminal; With

One system resource scheduler module, be used for according to the space isolation parameter between described portable terminal, carry out the system resource scheduling of space division multiple access, when the space isolation parameter between described portable terminal meets the demands, realize that the system resource between portable terminal is multiplexing, if the space isolation parameter between described portable terminal does not meet the demands, then the system resource between portable terminal is distinguished;

Described space isolation parameter further comprises: the ratio of the ratio of the Bo Dajiao of portable terminal signal, the characteristic value of space covariance matrix and the main peak power of power angular spectrum and secondary peak power, the ratio of described characteristic value is: the ratio of eigenvalue of maximum and inferior big characteristic value.

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