CN103067060A - Method and device of dispatching user device - Google Patents

Abstract

The invention discloses a method and a device of dispatching a user device. A pre-encoding matrix of each pair of user devices is calculated through an algorithm of an alignment transmission method of a signal space in a two-way relay network of a multi-user device to acquire the same equivalent information channel of each pair of user devices. The user device pair with biggest norms of the equivalent information channel is designed as a first user device pair, the user device pair with the biggest orthogonal value of the first user device pair is designed as a second user device pair, and the user device pair with the biggest orthogonal value of the first user device pair and the second user device pair is designed as a third user device pair. With the same process, the user device pairs with the biggest quantity supported by a relay are dispatched, and system property is further improved.

Description

A kind of method of dispatching user facility and device

Technical field

The invention belongs to the communications field, relate in particular to a kind of method and device of dispatching user facility.

Background technology

Two-way communication is the means of communication that a kind of communicating pair can both the sending and receiving signal, has a wide range of applications in some practical communication scenes.Such as, real-time files exchange, video calling and supervisory control system etc. between the communicating pair all need reliable two-way communication.Under some environment, because interval, both sides geographical position is far away or the channel fading that direct transfers is serious, the subscriber equipment (User Equpiment, UE) of expectation realization two-way communication often can't directly be realized reliable communication, at this moment usually utilizes relaying to assist to finish two-way communication.But in practical communication system, relaying is usually with semiduplex mode work, and communicating pair needs 4 time slots to finish information interaction, and spectrum efficiency is lower.In recent years, physical layer network coding technique has been subject to the extensive concern of academia and industrial circle because of its spectrum efficiency that can increase substantially traditional bidirectional relay system.

Utilize physical layer network coding technique, the communicating pair in the bidirectional relay system only needs 2 time slots can finish information interaction.Particularly, the 1st time slot, communicating pair utilizes identical running time-frequency resource to finish its uplink, and the relay directly is mapped as signal overlapping or the phase mutual interference the symbol of network code; The 2nd time slot, the certain running time-frequency resource of relaying utilization symbol after with this network code is broadcast to this subscriber equipment pair, after subscriber equipment receives the symbol of network code, after utilizing existing information to eliminate to disturb, obtains the useful information from the other user's equipment.

Although physical layer network coding technique can increase substantially the spectrum efficiency of bidirectional relay system, its potentiality still have to be developed.Be expected to most directly to promote bi-directional relaying march toward high spectrum utilization more, more one of the key technology of high-transmission reliability just is based on multiple-input and multiple-output (Multiple-Input Multiple-Output, the MIMO) technology of multi-antenna transmission.Spatial degrees of freedom implementation space diversity gain or spatial reuse gain that the MIMO technology utilizes many antennas to bring can greatly improve spectrum efficiency and the transmission quality of communicating by letter under the prerequisite that does not improve bandwidth and transmitting power.And many antenna relays can also be supported many to user equipment exchange information simultaneously, realize the communication of multi-user installation bi-directional relaying.In the multi-user installation two-way relay communication system, the interference of how eliminating between the subscriber equipment is the focus of Chinese scholars research.Some achievements in research are from the viewpoint of virtual MIMO, all subscriber equipmenies are looked as a whole, consist of a point-to-point mimo system with relaying, thereby utilize linear receiver can eliminate interference between the subscriber equipment.Recently, the researcher is based on the thought of disturbing alignment, proposition utilizes the precoding right signal space of each subscriber equipment that aligns, utilize linear receiver to obtain each subscriber equipment to the network code symbol of signal at the relaying place, namely eliminated subscriber equipment between interference; Subscriber equipment utilizes self information to extract needed information from the network code symbol afterwards, namely eliminated subscriber equipment within interference.With compare based on the method for traditional virtual MIMO, reduced the antenna amount that the relaying place needs based on the method for signal space alignment, improved the utilance of spatial degrees of freedom.

Yet, because the antenna amount of link deployment is limited, when the subscriber equipment logarithm that needs in the system to serve exceeds the quantity that relaying can support, need to carry out dispatching user facility.And can also obtain the multi-user installation diversity by dispatching user facility, improve the performance of system.

Prior art proposes a kind of algorithm of the dispatching user facility based on receiving the signal constellation point Maximizing Minimum Distance for the multi-user installation two-way relay communication system that adopts decoding to transmit.This algorithm is only applicable to the scene that subscriber equipment and relaying all dispose single antenna, and a pair of subscriber equipment is only chosen in each transmission.

Prior art has pair cellular cell bi-directional relaying scene, and namely a base station and one group of subscriber equipment carry out two-way communication by a relaying, proposes a kind of based on the relevant dispatching user facility algorithm of channel.This algorithm is only applicable to the scene of honeycomb bi-directional relaying, and is invalid in multi-user installation bi-directional relaying scene.

Summary of the invention

The purpose of the embodiment of the invention is to provide a kind of method and device of dispatching user facility, so that system can work, and be applicable to the dispatching user facility of signal space alignment transmission method when the subscriber equipment logarithm of needs service exceeds the quantity that relaying can support.

First aspect, a kind of method of dispatching user facility, described method comprises:

Initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set;

According to signal space alignment algorithm, calculate the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

Select described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

Judge the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

In conjunction with first aspect, in the possible implementation of the first of first aspect, described according to signal space alignment algorithm, calculate the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by identical the comprising of equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying:

Obtain each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, so that the equivalent channel of every pair of subscriber equipment is identical, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

In conjunction with the possible implementation of the first of first aspect or first aspect, in the possible implementation of the second of first aspect, the norm maximum of the described equivalent channel of described selection be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair comprises the quadrature value maximum with the described current subscriber equipment of having dispatched:

Select described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the described current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the described current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the described current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair with arrange after the described current subscriber equipment of having dispatched to the quadrature value maximum.

In conjunction with the possible implementation of the first of first aspect or first aspect or the possible implementation of the second of first aspect, in the third possible implementation of first aspect, described method also comprises:

Judge the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, otherwise, continue to return execution in step select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum.

Second aspect, a kind of device of dispatching user facility, described device comprises:

Initialization unit, be used for initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set;

Computing unit is used for calculating the pre-coding matrix of every pair of subscriber equipment according to signal space alignment algorithm, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

The dispatching user facility unit, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

The first judging unit is used for judging the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

In conjunction with second aspect, in the possible implementation of the first of second aspect, described computing unit specifically is used for:

Obtain each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, so that the equivalent channel of every pair of subscriber equipment is identical, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

In conjunction with the possible implementation of the first of second aspect or second aspect, in the possible implementation of the second of second aspect, described dispatching user facility unit comprises:

Select setting unit, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

The first projecting cell, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

The second projecting cell, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the described current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the described current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the described current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The 3rd projecting cell is used for that the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair with arrange after the described current subscriber equipment of having dispatched to the quadrature value maximum.

In conjunction with the possible implementation of the first of second aspect or second aspect or the possible implementation of the second of second aspect, in the third possible implementation of second aspect, described device also comprises:

The second judging unit, be used for judging the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, otherwise, continue to return execution in step select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum.

Compared with prior art, the present invention calculates the pre-coding matrix of every pair of subscriber equipment by the algorithm of the alignment of the signal space in multi-user installation bilateral relay network transmission method, and the equivalent channel that obtains every pair of subscriber equipment is identical; With the subscriber equipment of the norm maximum of described equivalent channel to being set to first pair of subscriber equipment pair, will be with first pair of subscriber equipment to the subscriber equipment of quadrature value maximum to being set to second pair of subscriber equipment pair, will with first pair of subscriber equipment to second pair of subscriber equipment the quadrature value maximum being set to the 3rd pair of subscriber equipment pair, the like, the subscriber equipment logarithm of the maximum quantity that the scheduling out-trunk can be supported, thus systematic function improved.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the below will do to introduce simply to the accompanying drawing of required use among the embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the method flow diagram of a kind of dispatching user facility of providing of the embodiment of the invention one;

Fig. 2 is a kind of multi-user installation bilateral relay network schematic diagram that the embodiment of the invention provides;

Fig. 3 be a kind of multi-user installation bilateral relay network of providing of the embodiment of the invention based on the different user devices dispatching algorithm with speed contrast schematic diagram;

Fig. 4 is the structure drawing of device of a kind of dispatching user facility of providing of the embodiment of the invention two;

Fig. 5 is the structure drawing of device of a kind of dispatching user facility of providing of the embodiment of the invention two;

Fig. 6 is the structure drawing of device of a kind of relaying of providing of the embodiment of the invention three.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.

The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Embodiment one

With reference to figure 1, Fig. 1 is the method flow diagram of a kind of dispatching user facility of providing of the embodiment of the invention one.As shown in Figure 1, the method may further comprise the steps:

Step 101, initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set;

As shown in Figure 2, suppose to have K to subscriber equipment, each UE configuration N root antenna, link deployment M root antenna, wherein N〉M/2.Employing can support M to UE based on the transmission method of signal space alignment at most simultaneously.K to UE by relaying R carry out two-way communication (UE that is numbered the UE of i and is numbered i+K communicates, i ∈ [1,2 ..., K]), suppose that owing to reasons such as path losses the path that direct transfers between the UE can not.Each transmission comprises two time slots, and corresponding stage of each time slot is respectively multiple access stage and broadcasting stage.Wherein the multiple access stage, M sends information to relaying simultaneously to UE; In the broadcasting stage, relaying carries out amplification forwarding to the received signal, is broadcast to all UE, and UE carries out self-interference by the self information of grasping to be eliminated, and obtains the information from the other side.

Concrete, initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set.Ω represents subscriber equipment pair set to be scheduled; M represents the current subscriber equipment logarithm of having dispatched, and is initialized as m=0; Φ represents the subscriber equipment pair set that has been scheduled to be initialized as φ (empty set).

Step 102 according to signal space alignment algorithm, is calculated the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

In this step, relaying obtains each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, thereby obtain the equivalent channel of every pair of subscriber equipment, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

Concrete, relaying obtains each UE to the channel matrix H of relaying by channel estimating _i, i ∈ [1,2 ..., 2K].According to signal space alignment algorithm, the pre-coding matrix of every couple of UE need to satisfy $[H_i,-H_{i+K}]\left[\begin{array}{c}{v}_i\\ v_{i+K}\end{array}\right]=0,$ Namely can be by calculating [H _i,-H _I+K] kernel obtain the pre-coding matrix of UE, wherein v _iExpression UE ⁱPre-coding matrix.Calculate again the equivalent channel h of every couple of UE _{(i, i+K)}=H _iv _i=H _I+Kv _I+K

Step 103, select described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

Attainable, select described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the described current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the described current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the described current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair with arrange after the described current subscriber equipment of having dispatched to the quadrature value maximum.

Concrete,, calculate k ∈ Ω for each subscriber equipment

$f_k=h_{(k,k+K)}-\underset{j=1}{\overset{m}{\mathrm{\Σ}}}{g}_{\left(m\right)}^H{h}_{(k,k+K)}{g}_{\left(m\right)}$

According to following rules selection subscriber equipment pair:

$l=\arg \underset{k\∈\mathrm{\Ω}}{\max }\left|\right|f_k\left|\right|$

Φ=Φ∪{l}

$g_{\left(m\right)}=\frac{f_l}{\left|\right|f\left|\right|}$

Step 104 is judged the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

In this step, subscriber equipment is removed from set omega l, and made m=m+1.If judge the maximum root antenna number of the described current subscriber equipment of having dispatched link deployment to whether, if then dispatching user facility finishes.

But as a kind of preferred embodiment, if | Φ |＜M and | Ω |＞0, forward step 103 to.

The UE that is scheduled is to sending information to relaying simultaneously, and the relay reception signal is

$r=\underset{j=1}{\overset{2M}{\mathrm{\Σ}}}{H}_j{v}_j{\mathrm{\α}}_j{d}_j+n_r$

$=\underset{j=1}{\overset{M}{\mathrm{\Σ}}}{h}_{(j,j+M)}({\mathrm{\α}}_j{d}_j+{\mathrm{\α}}_{j+M}{d}_{j+M}){+n}_r$

$=\left[\begin{array}{cccc}{h}_{(\mathrm{1,1}+M)}& h_{(2,2+M)}& ...& h_{(M,2M)}\end{array}\right]\left[\begin{array}{c}{\mathrm{\&alpha;}}_1{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_1+{\mathrm{\&alpha;}}_{1+\mathrm{<figure-callout\; id="1"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{1+M}\\ {\mathrm{\&alpha;}}_2{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_2+{\mathrm{\&alpha;}}_{2+\mathrm{<figure-callout\; id="2"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{2+M}\\ .\\ .\\ .\\ {\mathrm{\&alpha;}}_M{d}_M+{\mathrm{\&alpha;}}_{2M}{d}_{2M}\end{array}\right]+n_r$

$=\tilde{H}\left[\begin{array}{c}{\mathrm{\&alpha;}}_1{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_1+{\mathrm{\&alpha;}}_{1+\mathrm{<figure-callout\; id="1"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{1+M}\\ {\mathrm{\&alpha;}}_2{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_2+{\mathrm{\&alpha;}}_{2+\mathrm{<figure-callout\; id="2"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{2+M}\\ .\\ .\\ .\\ {\mathrm{\&alpha;}}_M{d}_M+{\mathrm{\&alpha;}}_{2M}{d}_{2M}\end{array}\right]+n_r$

D wherein _jBe the symbol that subscriber equipment j sends, α _jBe power confinement factor,

n _rBe Gaussian noise, its element is obeyed CN (0, N ₀), $\tilde{H}=\left[\begin{array}{cccc}{h}_{(1,1+M)}& h_{(\mathrm{2,2}+M)}& ...& h_{(M,2M)}\end{array}\right].$

Relaying carries out ZF and receives and precoding, then broadcasts.

Wherein

Be to ask pseudoinverse, β is the power confinement factor at relaying place,

UE deciphers to received signal.All nodes all communicate with the pattern of time division duplex, so transmission channel satisfies heterogeneite, so from the channel that is relayed to subscriber equipment k be

The reception signal of subscriber equipment k is:

$y_k=H_k^{H}s+n_k$

Subscriber equipment k adopts vector

Decipher to received signal:

Subscriber equipment k carries out self-interference and eliminates (the known β α of subscriber equipment k _kd _k), obtain

In order to show the Practical Performance of the inventive method, the applicant has carried out Multi simulation running and has implemented test.Each user equipment node in the pilot system disposes respectively 3 antennas, and 5 antennas of link deployment are selected 5 pairs of subscriber equipmenies at every turn from alternative user device.Transmission channel is rayleigh fading channel, and the transmitted power of all nodes is made as equal, and the noise power of all Nodes also is made as equal.The result of l-G simulation test as shown in Figure 3.Abscissa among the figure is the emission snr value, is specially the ratio of transmitting power and the noise power of each subscriber equipment; Ordinate is and speed that expression formula is as follows:

$R_{\mathrm{total}}=\underset{j=1}{\overset{2M}{\mathrm{\&Sigma;}}}{R}_j=\underset{j=1}{\overset{2M}{\mathrm{\&Sigma;}}}E\left[0.5\log (1+{\mathrm{SNR}}_j)\right],$

SNR wherein _jBe the received signal to noise ratio of subscriber equipment j, E[.] expression asks expectation, realizes being averaging approximate representation, coefficient 0.5 to be because two time slots of transmission by channel repeatedly in the emulation.According to the expression formula of subscriber equipment gained signal in the technical scheme, the received signal to noise ratio that can draw subscriber equipment k is

As shown in Figure 3, the total subscriber equipment logarithm to be scheduled of the numeral in the legend has 10 pairs and 20 pairs two kinds, all is to select 5 pairs of subscriber equipmenies by scheduling.Wherein " maximum and speed " is to adopt the method for searching thoroughly, enumerates the combination of all possible 5 pairs of subscriber equipmenies, chooses 5 pairs of subscriber equipmenies with the speed maximum; " poll " be to all subscriber equipmenies to being numbered, then dispatch according to number order.Can find out from simulation result, compare with " poll " algorithm that the algorithm that we propose can obtain obvious multi-user installation diversity under this scene, and and speed close to optimum in theory " maximum and speed " algorithm.The search volume is much smaller than " maximum and speed " algorithm simultaneously, and algorithm complex is lower.

The present invention calculates the pre-coding matrix of every pair of subscriber equipment by the algorithm of the alignment of the signal space in multi-user installation bilateral relay network transmission method, and the equivalent channel that obtains every pair of subscriber equipment is identical; With the subscriber equipment of the norm maximum of described equivalent channel to being set to first pair of subscriber equipment pair, will be with first pair of subscriber equipment to the subscriber equipment of quadrature value maximum to being set to second pair of subscriber equipment pair, will with first pair of subscriber equipment to second pair of subscriber equipment the quadrature value maximum being set to the 3rd pair of subscriber equipment pair, the like, the subscriber equipment logarithm of the maximum quantity that the scheduling out-trunk can be supported, thus systematic function improved.

Embodiment two

With reference to figure 4, Fig. 4 is the structure drawing of device of a kind of dispatching user facility of providing of the embodiment of the invention two.Described relaying comprises following unit:

Initialization unit 401, be used for initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set;

In this unit, initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set.Ω represents subscriber equipment pair set to be scheduled; M represents the current subscriber equipment logarithm of having dispatched, and is initialized as m=0; Φ represents the subscriber equipment pair set that has been scheduled to be initialized as φ (empty set).

Computing unit 402 is used for calculating the pre-coding matrix of every pair of subscriber equipment according to signal space alignment algorithm, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

In this unit, relaying obtains each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, so that the equivalent channel of every pair of subscriber equipment is identical, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

In this unit, relaying obtains each UE to the channel matrix H of relaying by channel estimating _i, i ∈ [1,2 ..., 2K].According to signal space alignment algorithm, the pre-coding matrix of every couple of UE need to be expired $[H_i,-H_{i+K}]\left[\begin{array}{c}{v}_i\\ v_{i+K}\end{array}\right]=0$ Foot namely can be by calculating [H _i,-H _I+K] kernel obtain the pre-coding matrix of UE, wherein v _iExpression UE ⁱPre-coding matrix.Calculate again the equivalent channel h of every couple of UE _{(i, i+K)}=H _iv _i=H _I+Kv _I+K

Dispatching user facility unit 403, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

Attainable, described dispatching user facility unit 403 comprises:

Select setting unit 501, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

The first projecting cell 502, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

The second projecting cell 503, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the described current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the described current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the described current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The 3rd projecting cell 504 is used for that the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair with arrange after the described current subscriber equipment of having dispatched to the quadrature value maximum.

The first judging unit 404 is used for judging the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

In this unit, subscriber equipment is removed from set omega l, and made m=m+1.If judge the maximum root antenna number of the described current subscriber equipment of having dispatched link deployment to whether, if then dispatching user facility finishes.

But as a kind of preferred embodiment, the second judging unit 405, if be used for | Φ |＜M and | Ω |＞0, forward dispatching user facility unit 403 to.

The UE that is scheduled is to sending information to relaying simultaneously, and the relay reception signal is

$r=\underset{j=1}{\overset{2M}{\mathrm{\&Sigma;}}}{H}_j{v}_j{\mathrm{\&alpha;}}_j{d}_j+n_r$

$=\underset{j=1}{\overset{M}{\mathrm{\&Sigma;}}}{h}_{(j,j+M)}({\mathrm{\&alpha;}}_j{d}_j+{\mathrm{\&alpha;}}_{j+M}{d}_{j+M})+n_r$

$=\left[\begin{array}{cccc}{h}_{(\mathrm{1,1}+M)}& h_{(2,2+M)}& ...& h_{(M,2M)}\end{array}\right]\left[\begin{array}{c}{\mathrm{\&alpha;}}_1{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_1+{\mathrm{\&alpha;}}_{1+\mathrm{<figure-callout\; id="1"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{1+M}\\ {\mathrm{\&alpha;}}_2{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_2+{\mathrm{\&alpha;}}_{2+\mathrm{<figure-callout\; id="2"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{2+M}\\ .\\ .\\ .\\ {\mathrm{\&alpha;}}_M{d}_M+{\mathrm{\&alpha;}}_{2M}{d}_{2M}\end{array}\right]+n_r$

$=\tilde{H}\left[\begin{array}{c}{\mathrm{\&alpha;}}_1{\mathrm{<figure-callout\; id="1"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_1+{\mathrm{\&alpha;}}_{1+\mathrm{<figure-callout\; id="1"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{1+M}\\ {\mathrm{\&alpha;}}_2{\mathrm{<figure-callout\; id="2"\; label="d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">d</figure-callout>}}_2+{\mathrm{\&alpha;}}_{2+\mathrm{<figure-callout\; id="2"\; label="M\; d"\; filenames="HDA00002658943400021.png"\; state="\{\{state\}\}">M</figure-callout>}}{d}_{}{}_{2+M}\\ .\\ .\\ .\\ {\mathrm{\&alpha;}}_M{d}_M+{\mathrm{\&alpha;}}_{2M}{d}_{2M}\end{array}\right]+n_r$

D wherein _jBe the symbol that subscriber equipment j sends, α _jBe power confinement factor,

n _rBe Gaussian noise, its element is obeyed CN (0, N ₀), $\tilde{H}=\left[\begin{array}{cccc}{h}_{(1,1+M)}& h_{(\mathrm{2,2}+M)}& ...& h_{(M,2M)}\end{array}\right].$

Relaying carries out ZF and receives and precoding, then broadcasts.

Wherein

Be to ask pseudoinverse, β is the power confinement factor at relaying place,

UE deciphers to received signal.All nodes all communicate with the pattern of time division duplex, so transmission channel satisfies heterogeneite, so from the channel that is relayed to subscriber equipment k be

The reception signal of subscriber equipment k is:

$y_k=H_k^{H}s+n_k$

Subscriber equipment k adopts vector

Decipher to received signal:

Subscriber equipment k carries out self-interference and eliminates (the known β α of subscriber equipment k _kd _k), obtain

The present invention calculates the pre-coding matrix of every pair of subscriber equipment by the algorithm of the alignment of the signal space in multi-user installation bilateral relay network transmission method, and the equivalent channel that obtains every pair of subscriber equipment is identical; With the subscriber equipment of the norm maximum of described equivalent channel to being set to first pair of subscriber equipment pair, will be with first pair of subscriber equipment to the subscriber equipment of quadrature value maximum to being set to second pair of subscriber equipment pair, will with first pair of subscriber equipment to second pair of subscriber equipment the quadrature value maximum being set to the 3rd pair of subscriber equipment pair, the like, the subscriber equipment logarithm of the maximum quantity that the scheduling out-trunk can be supported, thus systematic function improved.

Embodiment three

With reference to figure 6, Fig. 6 is the structure drawing of device of a kind of relaying of providing of the embodiment of the invention three.With reference to figure 6, Fig. 6 is a kind of relaying 600 that the embodiment of the invention provides, and the specific embodiment of the invention is not done restriction to the specific implementation of described relaying.Described relaying 600 comprises:

Processor (processor) 601, communication interface (Communications Interface) 602, memory (memory) 603, bus 604.

Processor 601, communication interface 602, memory 603 is finished mutual communication by bus 604.

Communication interface 602 is used for communicating with other equipment;

Processor 601 is used for executive program.

Particularly, program can comprise program code, and described program code comprises computer-managed instruction.

Processor 601 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to implement one or more integrated circuits of the embodiment of the invention.

Memory 603 is used for depositing program.Memory 603 may comprise the high-speed RAM memory, also may also comprise nonvolatile memory (non-volatile memory).Program specifically can comprise:

Initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set that has been scheduled, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value that has been scheduled is empty set;

According to signal space alignment algorithm, calculate the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

Select described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

Judge the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

The above only is preferred implementation of the present invention, does not consist of the restriction to protection range of the present invention.Any any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included in requirement of the present invention and comprise within the scope.

Claims (8)

1. the method for a dispatching user facility is characterized in that, described method comprises:

Initialization subscriber equipment pair set to be scheduled, the subscriber equipment logarithm of having dispatched and the subscriber equipment pair set of having dispatched, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value of having dispatched is empty set;

According to signal space alignment algorithm, calculate the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

Select described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment pair, described lower a pair of subscriber equipment pair and the current subscriber equipment of having dispatched are to the quadrature value maximum;

Judge the whether maximum root antenna number of link deployment of the current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

2. method according to claim 1, it is characterized in that, described according to signal space alignment algorithm, calculate the pre-coding matrix of every pair of subscriber equipment, so that described every pair of subscriber equipment multiply by identical the comprising of equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying:

Obtain each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, so that the equivalent channel of every pair of subscriber equipment is identical, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

3. method according to claim 1 and 2, it is characterized in that, the norm maximum of the described equivalent channel of described selection be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment pair, described lower a pair of subscriber equipment pair comprises the quadrature value maximum with the current subscriber equipment of having dispatched:

Select described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

Choose any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The rest may be inferred, selects lower a pair of subscriber equipment pair, described lower a pair of subscriber equipment pair with arrange after the current subscriber equipment of having dispatched to the quadrature value maximum.

4. the described method of any one is characterized in that according to claim 1-3, and described method also comprises:

Judge the whether maximum root antenna number of link deployment of the current subscriber equipment logarithm of having dispatched, if not, continuing to carry out and select lower a pair of subscriber equipment pair, described lower a pair of subscriber equipment pair and the current subscriber equipment of having dispatched are to the quadrature value maximum.

5. the device of a dispatching user facility is characterized in that, described device comprises:

Initialization unit, be used for initialization subscriber equipment pair set to be scheduled, the current subscriber equipment logarithm of having dispatched, the subscriber equipment pair set of having dispatched, described subscriber equipment pair set initialization value to be scheduled is the set of the right numbering of all subscriber equipmenies in the system, the described current subscriber equipment logarithm initialization value of having dispatched is 0, and the described subscriber equipment pair set initialization value of having dispatched is empty set;

Computing unit is used for calculating the pre-coding matrix of every pair of subscriber equipment according to signal space alignment algorithm, so that described every pair of subscriber equipment multiply by the equivalent channel that the pre-coding matrix of described every pair of subscriber equipment obtains to the channel matrix of relaying is identical;

The dispatching user facility unit, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, select with described first pair of subscriber equipment the subscriber equipment of quadrature value maximum as second pair of subscriber equipment pair, select with described first pair of subscriber equipment to described second pair of subscriber equipment be the 3rd pair of subscriber equipment pair to the quadrature value maximum, the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum;

The first judging unit is used for judging the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, if then dispatching user facility finishes.

6. device according to claim 5 is characterized in that, described computing unit specifically is used for:

Obtain each subscriber equipment to the channel matrix of relaying by channel estimating, according to the spatial alignment algorithm, it is identical to the pre-coding matrix that the channel matrix of relaying multiply by every pair of subscriber equipment that the pre-coding matrix of every pair of subscriber equipment need to satisfy described every pair of subscriber equipment, so that the equivalent channel of every pair of subscriber equipment is identical, described equivalent channel equals described every pair of subscriber equipment multiply by described every pair of subscriber equipment to the channel matrix of relaying pre-coding matrix.

7. according to claim 5 or 6 described devices, it is characterized in that described dispatching user facility unit comprises:

Select setting unit, be used for selecting described equivalent channel the norm maximum be first pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled is set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion pair, the described current subscriber equipment logarithm of having dispatched is set to 1, and the described subscriber equipment pair set of having dispatched is set to first pair of subscriber equipment pair;

The first projecting cell, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment described first pair of subscriber equipment on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct described first pair of subscriber equipment on projection components obtain described any a pair of subscriber equipment first pair of subscriber equipment on quadrature component, the a pair of subscriber equipment of selecting the quadrature value maximum is as second pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 2, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment pair;

The second projecting cell, be used for choosing any a pair of subscriber equipment in the subscriber equipment pair set described to be scheduled after arrange, the equivalent channel of calculating described any a pair of subscriber equipment the described current subscriber equipment of having dispatched on projection components, with the equivalent channel of described any a pair of subscriber equipment deduct the described current subscriber equipment of having dispatched on described any a pair of subscriber equipment of obtaining of projection components in the right quadrature component of the described current subscriber equipment of having dispatched, the a pair of subscriber equipment of selecting the quadrature value maximum is as the 3rd pair of subscriber equipment pair, described subscriber equipment pair set to be scheduled be set to first pair of subscriber equipment of described subscriber equipment pair set initialization value to be scheduled deletion to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair, the described current subscriber equipment logarithm of having dispatched is set to 3, the described subscriber equipment pair set of having dispatched be set to first pair of subscriber equipment to second pair of subscriber equipment to the 3rd pair of subscriber equipment pair;

The 3rd projecting cell is used for that the rest may be inferred, select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair with arrange after the described current subscriber equipment of having dispatched to the quadrature value maximum.

8. the described device of any one is characterized in that according to claim 5-7, and described device also comprises:

The second judging unit, be used for judging the whether maximum root antenna number of link deployment of the described current subscriber equipment logarithm of having dispatched, otherwise, continue to return execution in step select lower a pair of subscriber equipment to the time, described lower a pair of subscriber equipment pair and the described current subscriber equipment of having dispatched are to the quadrature value maximum.

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