CN103648155A - Base station user selection, relay user selection and ownership and power distribution method - Google Patents

Abstract

The invention provides a base station user selection, relay user selection and ownership and power distribution method. The method comprises: respectively determining channel information from all active base station users and all relay users respectively to base stations and relay nodes; according to the channel information from all the relay users to the base stations and the relay nodes, determining the selection and ownership base stations of the relay users; according to the ownership situations of the relay users and the channel information from all the base station users to the base stations and the relay nodes, respectively determining the base station user selection of base stations at the left and at the right of the relay nodes; and according to the service quality of each selected user and the channel information from each selected user respectively to the base stations and the relay nodes, determining the smallest emission power of each selected user. The base station user selection, relay user selection and ownership and power distribution method can improve the performance of a whole communication system.

Description

A kind of base station user selection, trunk subscriber selection and ownership and power distribution method

Technical field:

The present invention relates to wireless communication field, particularly about the user in wireless relay collaboration communication field, select and power division a kind of method that specifically base station user selects, trunk subscriber is selected and trunk subscriber belongs to and the required minimum power of selected user distributes.

Background technology:

Along with social development, people are more and more higher to performance requirements such as transmission rate, communication securities.Yet, can be more and more nervous for the frequency spectrum resource utilizing, for meet people to the requirement of communication quality, improve communication quality, and reduce the cost of unit data transmission, propose successively in recent years to adopt relay cooperative technology, full cellular cell same frequency multiplex technique etc.

The core concept of relay cooperative communication technology is to allow via node through simple amplification or compressed encoding or decoding, to pass to the stay of two nights to the information from information source end again after coding again, and all information that last stay of two nights recycling is received, decode.Under such mode, via node has played certain synergism to the communication between information source and the stay of two nights, and certain space diversity is provided, thereby can improve communication quality to anti-multipath fading, can reduce the cost of unit data transmission simultaneously.And full cellular cell same frequency is multiplexing, can significantly promote frequency efficiency.

Then in the collaboration communication mode of single information source list relaying list stay of two nights, single work pattern due to via node, a complete transfer of data will spend the channel of two quadratures, this only spends an orthogonal channel with information source to the direct transmission between the stay of two nights and compares, and this space diversity characteristic has reduced again frequency efficiency.Meanwhile, because the same frequency of full cellular cell is multiplexing, the same frequency signal that can increase the weight of between honeycomb disturbs.

Two kinds of trunk types have been proposed in LTE-A project: Type-I relaying and Type-II relaying.The maximum difference in theoretical research of Type-II relaying and Type-I relaying is, in Type-II relay scene, between information source (eNB) and the stay of two nights (UE), exists direct communication link.Therefore, how under the multiplexing pattern of full cellular cell same frequency, in conjunction with relay cooperative transmission technology, adopt that base station user selects, trunk subscriber selection carrys out elevator system performance with ownership and power distribution method, be worth furtheing investigate.

Summary of the invention:

The object of the invention is to improve owing to adopting full community with multiplexing the aggravated homogenous frequency signal interference problem of frequency, and improve the spectrum efficiency under relay cooperative communication pattern.

Embodiments of the invention provide a kind of method that base station user selects, trunk subscriber is selected and belonged to, and each selected user presses the required minimum power distribution method of quality of service requirement.

Base station user selection, trunk subscriber selection and ownership and power distribution method described in embodiments of the invention, can be under the network topology structure of the multiplexing cellular cell of full rate with via node, how consideration carries out base station user's selection, trunk subscriber is selected is distributed with ownership and each selected user's minimum power.

According to the present invention, a kind of base station user selection, trunk subscriber selection and ownership and power distribution method are provided, comprise the following steps:

step 1, supposition via node between two base stations to assist the cell edge user access network between two base stations; Trunk subscriber is two edge customers between base station, and base station user is each base station other users except edge customer around; Via node adjacent base station is two base stations adjacent with via node, and base station is eNodeB, and via node is RN; ENodeB-1 active base transceiver station user is around: MS ₁₁, MS ₁₂..., MS _1N; ENodeB-2 active base transceiver station user is around: MS ₂₁, MS ₂₂..., MS _2M; Active trunk subscriber is: MS ₃₁, MS ₃₂..., MS _3K.

step 2, determine that all active base transceiver station users are to base station with to the channel information of via node, all trunk subscribers that enliven are to base station with to the channel information of via node, and via node is to the channel information of adjacent base station, all any active ues after determining are expressed as to via node with to the channel information of base station:

Base station user MS ₁₁, MS ₁₂..., MS _1Nchannel information to eNodeB-1 is expressed as h ₁₁, h ₁₂..., h _1N; Base station user MS ₁₁, MS ₁₂..., MS _1Nchannel information to RN is expressed as h _a1, h _a2..., h _aN; Base station user MS ₂₁, MS ₂₂..., MS _2Mchannel information to eNodeB-2 is expressed as h ₂₁, h ₂₂..., h _2M; Base station user MS ₂₁, MS ₂₂..., MS _2Mchannel information to RN is expressed as h _b1, h _b2..., h _bM; Trunk subscriber MS ₃₁, MS ₃₂..., MS _3Kto eNodeB-1 with to the channel information of eNodeB-2, be expressed as g _a1, g _a2..., g _aKand g _b1, g _b2..., g _bK; Trunk subscriber MS ₃₁, MS ₃₂..., MS _3Kchannel information to RN is expressed as g ₃₁, g ₃₂..., g _3K; And RN is expressed as h to eNodeB-1 with to the channel information of eNodeB-2 _r1and h _r2.

step 3, according to obtained g _a1, g _a2..., g _aKand g _b1, g _b2..., g _bKand g ₃₁, g ₃₂..., g _3Kand h _r1, h _r2determine that the selection of trunk subscriber and the home base station of selected trunk subscriber comprise: the SNR maximum with trunk subscriber turns to the home base station that choice criteria is gone to select trunk subscriber and selected trunk subscriber.Concrete operations are as follows:

A, first, order: ${\mathrm{SNR}}_{\mathrm{ik}}=\frac{P_s{\left|g_{\mathrm{ik}}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{\mathrm{Ri}}{g}_{3k}\right|}^2}{{\left|h_{\mathrm{Ri}}\mathrm{\&alpha;}\right|}^2{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$ Wherein i=1,2,1≤k≤K, P _sand P _rit is equivalent to the transmitting power of trunk subscriber and RN to be respectively constant,

with be respectively the noise variance on eNodeB and RN, and $\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_s{\left|g_{3k}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}};$

B, then, finds maximum SNR _xy,

wherein corresponding trunk subscriber y is the trunk subscriber of choosing, and corresponding base station x is the home base station of the trunk subscriber y that chooses.

step 4, according to the ownership situation of selected trunk subscriber y, and all base station users determine to base station with to the channel information between via node that respectively the base station user of base station, via node both sides selects, concrete operations are as follows:

A, for the base station user of the base station with trunk subscriber y ownership, select (without loss of generality, the home base station of suppose relay user y is eNodeB-1), first, order: ${\mathrm{SINR}}_{1n}=\frac{P_s{\left|h_{1n}\right|}^2}{P_s{\left|g_{\mathrm{an}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{R1}{h}_{\mathrm{an}}\right|}^2}{{\left|{\mathrm{\&alpha;<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\right|}^2\left(P_s\right|g_{3y}|+{\mathrm{\&sigma;}}_r^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$ Wherein

1≤n≤N, P _sand P _rit is equivalent to the transmitting power of user and RN to be respectively constant,

for the noise variance on eNodeB-1;

B, then, finds maximum SINR _1j,

wherein respective base station user j is the base station user that eNodeB-1 chooses;

C, for the base station user who there is no the base station of trunk subscriber ownership selects, (without loss of generality, suppose that eNodeB-2 is the base station that there is no trunk subscriber ownership), first, makes:

with ${\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_{1\mathrm{ym}}=\frac{P_s{\left|g_{\mathrm{ay}}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{R1}{g}_{3y}\right|}^2}{{\left|{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\mathrm{\&alpha;}\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+P_s{\left|h_{\mathrm{bm}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$ In formula $\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_s({\left|g_{3y}\right|}^2+{\left|h_{\mathrm{bm}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}},$ And order: $R_m={\log }_2(1+\frac{{\mathrm{SINR}}_{2m}}{\mathrm{\&Gamma;}})+{\log }_2(1+\frac{{\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_{1\mathrm{ym}}}{\mathrm{\&Gamma;}}),$ 1≤m≤M wherein, P _sand P _rit is equivalent to respectively the transmitting power of user and RN to be respectively constant,

with

be respectively the noise variance on eNodeB-2 and RN, Γ>=1 is that its value of constant is relevant with modulation system;

D, then, finds maximum R _z,

wherein respective base station user z is the base station user that eNodeB-2 chooses;

step 5, according to selected trunk subscriber to base station with to the channel information of via node, to base station with to the channel information of via node and the quality of service requirement of each selected user, determine respectively the minimum emissive power of each selected user with selected base station user, concrete operations are as follows:

step 5.1, the service quality that is assumed to be trunk subscriber y and provides is more than or equal to SINR for requiring for its Signal to Interference plus Noise Ratio providing (signal to interference and noise ratio, SINR) _r, the service quality providing for the selected base station user j of eNodeB-1 is more than or equal to SINR for requiring for its SINR providing ₁, the service quality providing for the selected base station user z of eNodeB-2 is more than or equal to SINR for requiring for its SINR providing ₂, wherein, without loss of generality, suppose that eNodeB-2 is the base station that there is no trunk subscriber ownership;

step 5.2, the selected base station user j of initialization eNodeB-1 transmitting power be P ₁, the transmitting power of the base station user z that initialization eNodeB-2 is selected is P ₂, the transmitting power of the trunk subscriber y that initialization is selected is P ₃;

step 5.3, upgrade the transmitting power of trunk subscriber y,

First, order: $P_3^{*}=\frac{{\mathrm{SINR}}_r}{\frac{{\left|g_{\mathrm{ay}}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{{\left|{\mathrm{\&alpha;h}}_{R1}{g}_{3y}\right|}^2}{{\left|{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\mathrm{\&alpha;}\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}},$ In formula

$\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_3{\left|g_{3y}\right|}^2+{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_1{\left|h_{\mathrm{aj}}\right|}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}},$ P wherein _rfor the transmitting power of RN,

with

be respectively the noise variance on eNodeB-1 and RN;

Then,

value be assigned to P ₃to reach, upgrade P ₃object,

step 5.4, upgrade the transmitting power of base station user j,

First, order: ${\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_1^{*}=\frac{{\mathrm{SINR}}_1}{\frac{{\left|h_{1j}\right|}^2}{P_3{\left|g_{\mathrm{ay}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{{\left|{\mathrm{\&alpha;h}}_{R1}{h}_{\mathrm{aj}}\right|}^2}{{\left|\mathrm{\&alpha;}{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+P_3{\left|g_{3y}\right|}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}},$ In formula, α is with above-mentioned steps 3;

Then,

value be assigned to P ₁to reach, upgrade P ₁object,

step 5.5, upgrade the transmitting power of base station user z,

First, order: ${\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2^{*}=\frac{{\mathrm{<figure-callout\; id="2"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_2}{\frac{{\left|h_{2z}\right|}^2}{P_3{\left|g_{\mathrm{by}}\right|}^2+{\mathrm{\&sigma;}}_b^2}};$

Then,

value be assigned to P ₂to reach, upgrade P ₂object,

step 5.6, iteration above-mentioned steps 5.3 is to step 5.5 until meet the condition of convergence, obtains optimum power division numerical value, then power division numerical value, notifies respectively each user;

So far, power division process finishes, and starts to carry out data information transfer.

Accompanying drawing explanation

By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:

Fig. 1 is base station, relaying, all any active ues distribution situation abstract model exemplary plot described in the embodiment of the present invention;

Fig. 2 is the abstract model exemplary plot that completes base station user selection, trunk subscriber selection and ownership described in the embodiment of the present invention;

Fig. 3 is that the base station user described in the embodiment of the present invention selects, trunk subscriber is selected and the general introduction figure of ownership;

Fig. 4 is the method flow diagram to base station user and trunk subscriber distribution power described in the embodiment of the present invention;

Fig. 5 is the general introduction flow chart of the inventive method.

Embodiment

Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.

The present invention is in order to improve full cellular cell with multiplexing the caused homogenous frequency signal interference problem of frequency, and the spectrum efficiency that improves relay cooperative communication.Embodiments of the invention suppose to be provided with a via node between two multiplexing cellular cells of same frequency to assist edge customer access communications network, and suppose relay node is transmitted to the stay of two nights after only amplifying to the received signal processing simultaneously.The present invention is directed to user to the up current situation of base station.

As shown in Figure 1, this legend is depicted as the application scenarios of the present embodiment: base station, via node, all any active ues distribution situation abstract models, include 2 base stations (eNodeB-1 and eNodeB-2), 1 via node (RN) in this model; And the active base transceiver station number of users of ownership eNodeB-1 is N, be respectively: MS ₁₁, MS ₁₂..., MS _1N; The active base transceiver station number of users of ownership eNodeB-2 is M, is respectively: MS ₂₁, MS ₂₂..., MS _2M; Enlivening trunk subscriber number is K, is respectively: MS ₃₁, MS ₃₂..., MS _3K.

In traffic model shown in Fig. 1 example, two cellular cells are with frequently multiplexing, in same same time/frequency source block, allow three users access communications network simultaneously, i.e. the base station user of a trunk subscriber, and the base station user of an ownership eNodeB-1 and an ownership eNodeB-2.Therefore, the first step of the present invention is user and selects, from enliven trunk subscriber, select a trunk subscriber, from belong to respectively the active base transceiver station user of eNodeB-1 and eNodeB-2, select separately a base station user, suppose that each user's service priority is identical.

In the present embodiment, the preparation before user selects is the channel information of having estimated any active ues to base station and having arrived RN.After supposing that channel information has been estimated, each user arrives base station and as follows to the channel information of RN:

Base station user MS ₁₁, MS ₁₂..., MS _1Nchannel information to eNodeB-1 is respectively h ₁₁, h ₁₂..., h _1N; Base station user MS ₁₁, MS ₁₂..., MS _1Nchannel information to RN is respectively h _a1, h _a2..., h _aN; Base station user MS ₂₁, MS ₂₂..., MS _2Mchannel information to eNodeB-2 is respectively h ₂₁, h ₂₂..., h _2M; Base station user MS ₂₁, MS ₂₂..., MS _2Mchannel information to RN is respectively h _b1, h _b1..., h _bM; Trunk subscriber MS ₃₁, MS ₃₂..., MS _3Kto eNodeB-1 with to the channel information of eNodeB-2, be respectively g _a1, g _a2..., g _aKand g _b1, g _b2..., g _bK; Trunk subscriber MS ₃₁, MS ₃₂..., MS _3Kchannel information to RN is respectively g ₃₁, g ₃₂..., g _3K; And RN is respectively h to eNodeB-1 with to the channel information of eNodeB-2 _r1and h _r2.

In the present embodiment, suppose that eNodeB-1 and eNodeB-2 can exchange the channel information of gained separately, therefore, eNodeB-1 and eNodeB-2 have respectively the channel information of all any active ues; Or, suppose that (central processer, the CP) node that has other CP has all users to base station with to the channel information of RN, in the present embodiment, eNodeB-1 or eNodeB-2 can see CP node in addition as.

After all channel informations have been estimated, carrying out user selects and ownership operation, Figure 2 shows that the present embodiment is after selecting operation through user, the traffic model figure of while access communications network in same time/frequency source block, the i.e. abstract model of three user's while access communications networks.

The concise and to the point process of user choosing method of the embodiment of the present invention as shown in Figure 3, mainly comprises:

step 101: CP according to all active trunk subscribers to RN with to the channel information of base station, both sides, the service quality that maximizes trunk subscriber of take is standard will be selected trunk subscriber, and the home base station of selected trunk subscriber;

step 102: the trunk subscriber based on selected and home base station information thereof, CP is according to all active base transceiver station users to having the base station of attached trunk subscriber and to the channel information of RN, and the service quality that maximizes base station user of take is selected as standard has the base station user of the base station of attached trunk subscriber;

step 103: the trunk subscriber based on selected and home base station information thereof, CP is according to all active base transceiver station users to having the attached base station of trunk subscriber and to the channel information of RN, and the service quality that maximizes base station user of take is selected as standard has the base station user of the attached base station of trunk subscriber.

Particularly, for step 101, the selection of trunk subscriber and affiliation method, can be explained in detail by following derivation.

First, suppose in same time/frequency source block to only have a trunk subscriber to be allowed to access communication network, there is no base station user, only have a trunk subscriber to assist access eNodeB-1 or eNodeB-2 by RN;

The signal noise ratio (SNR) that eNodeB-i receipts fetch from any one trunk subscriber is so:

${\mathrm{SNR}}_{\mathrm{ik}}=\frac{P_s{\left|g_{\mathrm{ik}}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{\mathrm{Ri}}{g}_{3k}\right|}^2}{{\left|h_{\mathrm{Ri}}\mathrm{\&alpha;}\right|}^2{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$

Wherein: i=1,2,1≤k≤K, P _sand P _rit is equivalent to the transmitting power of trunk subscriber and RN to be respectively constant,

with be respectively the noise variance on eNodeB-i and RN, and

Then, find trunk subscriber y and the corresponding home base station x with maximum S/N R, even: ${\mathrm{SNR}}_{\mathrm{xy}}=\arg \underset{\{i,k\}}{\max }\left\{{\mathrm{SNR}}_{\mathrm{ik}}\right\},$

Wherein corresponding trunk subscriber y is the trunk subscriber of choosing, and corresponding base station x is the home base station of the trunk subscriber y that chooses, originally sentences the service quality that SNR represents trunk subscriber.

For step 102, there is the base station user choosing method of the attached base station of trunk subscriber, can be explained in detail by following derivation.

First, without loss of generality, suppose that selected trunk subscriber is trunk subscriber y, and the home base station of trunk subscriber y is eNodeB-1; And ignore eNodeB-2 and attached base station user's thereof existence; And the signal of supposing the trunk subscriber y that eNodeB-1 first decodes chosen, and then decoding is by its selected base station user's signal;

The Signal Interference and Noise Ratio (SINR) that eNodeB-1 receipts fetch from any one base station user n is so:

${\mathrm{SINR}}_{1n}=\frac{P_s{\left|h_{1n}\right|}^2}{P_s{\left|g_{\mathrm{an}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{R1}{h}_{\mathrm{an}}\right|}^2}{{\left|{\mathrm{\&alpha;<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\right|}^2\left(P_s\right|g_{3y}|+{\mathrm{\&sigma;}}_r^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$

Wherein:

1≤n≤N, P _sand P _rit is equivalent to the transmitting power of user and RN to be respectively constant,

for the noise variance on eNodeB-1;

Then, find the base station user j with maximum SINR, even:

${\mathrm{SINR}}_{1j}=\arg \underset{\left\{n\right\}}{\max }\left\{{\mathrm{SINR}}_{1n}\right\},$

Wherein respective base station user j is the base station user that eNodeB-1 chooses, and originally sentences the service quality that SINR represents base station user.

For step 103, there is no the base station user choosing method of the attached base station of trunk subscriber, can be explained in detail by following derivation.

First, without loss of generality, suppose that there is no the attached base station of trunk subscriber is eNodeB-2, owing to belonging to the signal of the base station user transmitting of eNodeB-2, can interfere with the signal that trunk subscriber is launched, so while selecting for the base station user of eNodeB-2, consider selected base station user's SINR and the SINR of trunk subscriber of eNodeB-2 simultaneously.But, owing to belonging to the SINR of the selected base station user j of eNodeB-1, be subject to the effect of signals of selected base station user transmitting of eNodeB-2 very micro-, the SINR that therefore can ignore the selected base station user j that belongs to eNodeB-1 is belonged to the impact of signal of the base station user transmitting of eNodeB-2.

The Signal Interference and Noise Ratio (SINR) that eNodeB-2 receipts fetch from any one base station user m is so:

${\mathrm{SINR}}_{2m}=\frac{P_s{\left|h_{2m}\right|}^2}{P_s{\left|g_{\mathrm{bm}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$

And now eNodeB-1 receives that the SINR from trunk subscriber y is:

${\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_{1\mathrm{ym}}=\frac{P_s{\left|g_{1y}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{P_s{\left|\mathrm{\&alpha;}{h}_{R1}{g}_{3y}\right|}^2}{{\left|{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\mathrm{\&alpha;}\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+P_s{\left|h_{\mathrm{bm}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2},$

1≤m≤M wherein, P _sand P _rit is equivalent to respectively the transmitting power of user and RN to be respectively constant,

with

be respectively the noise variance on eNodeB and RN, $\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_s({\left|g_{3y}\right|}^2+{\left|h_{\mathrm{bm}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}};$

What now can obtain base station user m and trunk subscriber y with speed is:

And order: $R_m={\log }_2(1+\frac{{\mathrm{SINR}}_{2m}}{\mathrm{\&Gamma;}})+{\log }_2(1+\frac{{\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_{1\mathrm{ym}}}{\mathrm{\&Gamma;}}),$

Γ >=1 is that its value of constant is relevant with modulation system;

Then, find the base station user z with maximum and speed, even:

$R_z=\arg \underset{\left\{m\right\}}{\max }\left\{{\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_{1\mathrm{ym}}\right\},$

Wherein respective base station user z is the base station user that eNodeB-2 chooses.

So far, base station user selects, trunk subscriber is selected to finish with ownership process, below ingoing power distribute.

The power division flow chart of the embodiment of the present invention as shown in Figure 4, is elaborated as follows:

step 200: initialization, that is: the service quality that is assumed to be trunk subscriber y and provides is more than or equal to SINR for requiring for its SINR providing _r, the service quality providing for the selected base station user j of eNodeB-1 is more than or equal to SINR for requiring for its SINR providing ₁, the service quality providing for the selected base station user z of eNodeB-2 is more than or equal to SINR for requiring for its SINR providing ₂, wherein, without loss of generality, suppose that eNodeB-2 is the base station that there is no trunk subscriber ownership; And the transmitting power of the selected base station user j of eNodeB-1 is P ₁, the transmitting power of the base station user z that initialization eNodeB-2 is selected is P ₂, the transmitting power of the trunk subscriber y that initialization is selected is P ₃;

step 201: the fixing base station user's of base station, RN both sides transmitting power, according to the quality of service requirement of trunk subscriber, determine the minimum emissive power of trunk subscriber, that is:

First, order:

$P_3^{*}=\frac{{\mathrm{SINR}}_r}{\frac{{\left|g_{1y}\right|}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{{\left|{\mathrm{\&alpha;h}}_{R1}{g}_{3y}\right|}^2}{{\left|{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\mathrm{\&alpha;}\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}},$

In formula $\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_3{\left|g_{3y}\right|}^2+{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_1{\left|h_{\mathrm{aj}}\right|}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}},$ P wherein _rfor the transmitting power of RN,

with

be respectively the noise variance on eNodeB-1 and RN;

Then, P ₃ ^*value be assigned to P ₃to reach, upgrade P ₃object, that is:

step 202: fixed relay user's transmitting power, according to the base station user's of the base station with trunk subscriber quality of service requirement, determine the minimum emissive power of the base station user j of the base station of having trunk subscriber, that is:

First, order: ${\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_1^{*}=\frac{{\mathrm{<figure-callout\; id="1"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_1}{\frac{{\left|h_{1j}\right|}^2}{P_3{\left|g_{\mathrm{ay}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}+\frac{{\left|{\mathrm{\&alpha;h}}_{R1}{h}_{\mathrm{aj}}\right|}^2}{{\left|\mathrm{\&alpha;}{\mathrm{<figure-callout\; id="1"\; label="h\; R"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">h</figure-callout>}}_R\right|}^2({\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+P_3{\left|g_{3y}\right|}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}},$

In formula $\mathrm{\&alpha;}=\sqrt{\frac{P_r}{P_3{\left|g_{3y}\right|}^2+{\mathrm{<figure-callout\; id="1"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_1{\left|h_{\mathrm{aj}}\right|}^2+{\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2{\left|h_{\mathrm{bz}}\right|}^2)+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}};$

Then,

value be assigned to P ₁to reach, upgrade P ₁object,

step 203: fixed relay user's transmitting power, according to the quality of service requirement that there is no the base station user of the attached base station of trunk subscriber, determine the minimum emissive power of the base station user z that there is no the attached base station of trunk subscriber, that is: first, order:

${\mathrm{<figure-callout\; id="2"\; label="P"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">P</figure-callout>}}_2^{*}=\frac{{\mathrm{<figure-callout\; id="2"\; label="SINR"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">SINR</figure-callout>}}_2}{\frac{{\left|h_{2z}\right|}^2}{P_3{\left|g_{\mathrm{by}}\right|}^2+{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="HSA0000098986750000011.png,HSA0000098986750000012.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}},$

Then,

value be assigned to P ₂to reach, upgrade P ₂object,

step 204 and 205:, iteration above-mentioned steps 201 is to step 203 until meet the condition of convergence, the near-optimization power division numerical value obtaining, then CP notifies respectively each selected user the power division numerical value of gained, so far, power division process finishes, and starts to carry out data information transfer.

In sum, as shown in Figure 5, key step comprises the brief operation process of the embodiment of the present invention:

step 301: determine that respectively all base station users, trunk subscriber divide the channel information that is clipped to base station and arrives via node;

step 302: according to all trunk subscribers to via node and selection and the base station, home to return to thereof of determining trunk subscriber to the channel information of base station;

step 303: according to selected trunk subscriber and home to return to information thereof and all base station users, to the channel information of base station, determine that respectively the base station user of via node the right and left base station selects;

step 304: according to selected trunk subscriber, base station user, divide and be clipped to via node and to the channel information of base station, determine respectively the transmitting power of each selected user.

The foregoing is only preferred embodiment of the present invention and oneself; it will be appreciated that, the present invention is not limited to above-mentioned specific implementations, within the spirit and principles in the present invention all; any modification of making, be equal to replacement, improvement etc., within the scope of protection of the invention all should be included in.

Claims (7)

1. base station user selection, trunk subscriber selection and ownership and a power distribution method, is characterized in that, comprising:

Determine respectively all active base transceiver station users to base station and to via node, all channel informations that enlivens trunk subscriber to base station and arrive via node, and via node is to the channel information of adjacent base station;

According to obtained all channel informations that enliven trunk subscriber to base station and arrive via node, and via node is determined the selection of trunk subscriber and the home base station of selected trunk subscriber to the channel information of adjacent base station;

According to the ownership situation of selected trunk subscriber, and all active base transceiver station users determine to base station and to the channel information between via node that respectively the user of base station, via node both sides selects;

According to selected trunk subscriber, to via node and to the channel condition information of base station and selected base station user, to via node and to the channel condition information of base station and the quality of service requirement of each selected user, determine respectively the minimum emissive power of each selected user.

2. method according to claim 1, is characterized in that, described via node between two base stations to assist the cell edge user's access communications network between two base stations; Described trunk subscriber is two edge customers between base station, and described base station user is each base station other users except edge customer around; Described via node adjacent base station is two base stations adjacent with via node; Base station is eNodeB, and via node is RN; ENodeB-1 around active base station user is: MS ₁₁, MS ₁₂..., MS _1N; ENodeB-2 around active base station user is: MS ₂₁, MS ₂₂..., MS _2M; Inactive edge trunk subscriber between two base stations is: MS ₃₁, MS ₃₂..., MS _3K.

3. method according to claim 1, it is characterized in that the described channel information of determining respectively all active base transceiver station users to base station and arriving via node, all channel informations that enliven trunk subscriber to base station and arrive via node, and via node is to the channel information of adjacent base station, comprising:

MS ₁₁, MS ₁₂..., MS _1Nchannel information to eNodeB-1 is expressed as h ₁₁, h ₁₂..., h _1N, MS ₁₁, MS ₁₂..., MS _1Nchannel information to RN is expressed as h _a1, h _a2..., h _aN;

MS ₂₁, MS ₂₂..., MS _2Mchannel information to eNodeB-2 is expressed as h ₂₁, h ₂₂..., h _2M, MS ₂₁, MS ₂₂..., MS _2Mchannel information to RN is expressed as h _b1, h _b2..., h _bM;

MS ₃₁, MS ₃₂..., MS _3Kto eNodeB-1 with to the channel information of eNodeB-2, be expressed as g _a1, g _a2..., g _aKand g _b1, g _b2..., g _bK; MS ₃₁, MS ₃₂..., MS _3Kchannel information to RN is expressed as g ₃₁, g ₃₂..., g _3K; And RN is expressed as h to eNodeB-1 with to the channel information of eNodeB-2 _r1and h _r2.

4. according to method described in claim 1 or 3, it is characterized in that, described according to obtained g _a1, g _a2..., g _aKand g _b1, g _b2..., g _bKand g ₃₁, g ₃₂..., g _3Kand h _r1, h _r2determine that respectively the selection of trunk subscriber and the home base station of selected trunk subscriber comprise: signal noise ratio (signal to noise ratio, the SNR) maximum with trunk subscriber turns to the home base station that choice criteria is gone to select trunk subscriber and selected trunk subscriber.

5. method according to claim 4, is characterized in that, with the SNR maximum of trunk subscriber, turns to the home base station that choice criteria is gone to select trunk subscriber and selected trunk subscriber, comprising:

A, first, order:

i=1 wherein, 2,1≤k≤K, P _sand P _rit is equivalent to the transmitting power of trunk subscriber and RN to be respectively constant,

with

be respectively the noise variance on eNodeB and RN, and

B, then, finds maximum SNR _xy,

wherein corresponding trunk subscriber y is the trunk subscriber of choosing, and corresponding base station x is the home base station of the trunk subscriber y that chooses.

6. according to method described in claim 1 or 3, it is characterized in that, described according to the ownership situation of selected trunk subscriber, and all base station users determine to base station with to the channel information between via node that respectively the base station user of base station, via node both sides selects, and comprising:

A, for the base station user who has the base station of the attached ownership of trunk subscriber y, select (without loss of generality, the home base station of suppose relay user y is eNodeB-1), first, order: wherein

1≤n≤N, P _sand P _rit is equivalent to the transmitting power of user and RN to be respectively constant,

for the noise variance on eNodeB-1;

B, then, finds maximum SINR _1j,

wherein respective base station user j is the base station user that eNodeB-1 chooses;

C, for the base station user who there is no the base station of the attached ownership of trunk subscriber selects, (without loss of generality, suppose that eNodeB-2 is the base station that there is no trunk subscriber ownership), first, makes:

with

in formula and order: 1≤m≤M wherein,, P _sand P _rit is equivalent to respectively the transmitting power of user and RN to be respectively constant,

with

be respectively the noise variance on eNodeB-2 and RN, Γ>=1 is that its value of constant is relevant with modulation system;

D, then, finds maximum R _z,

wherein respective base station user z is the base station user that eNodeB-2 chooses.

7. method according to claim 1, it is characterized in that, described according to selected trunk subscriber to base station with to the channel information of via node, to base station with to the channel information of via node and the quality of service requirement of each selected user, determine respectively the minimum emissive power of each selected user with selected base station user, comprising:

step 1, the service quality that is assumed to be trunk subscriber y and provides is more than or equal to SINR for requiring for its Signal to Interference plus Noise Ratio providing (signal to interference and noise ratio, SINR) _r, the service quality providing for the selected base station user j of eNodeB-1 is more than or equal to SINR for requiring for its SINR providing ₁, the service quality providing for the selected base station user z of eNodeB-2 is more than or equal to SINR for requiring for its SINR providing ₂, wherein, without loss of generality, suppose that eNodeB-2 is the base station that there is no trunk subscriber ownership;

step 2, the selected base station user j of initialization eNodeB-1 transmitting power be P ₁, the transmitting power of the base station user z that initialization eNodeB-2 is selected is P ₂, the transmitting power of the trunk subscriber y that initialization is selected is P ₃;

step 3, upgrade the transmitting power of trunk subscriber y, first, order:

in formula

P wherein _rfor the transmitting power of RN,

with be respectively the noise variance on eNodeB-1 and RN, then, P ₃ ^*value be assigned to P ₃to reach, upgrade P ₃object,

step 4, upgrade the transmitting power of base station user j, first, order:

in formula, α is with above-mentioned steps 3, then, value be assigned to P ₁to reach, upgrade P ₁object,

step 5, upgrade the transmitting power of base station user z, first, order:

then,

value be assigned to P ₂to reach, upgrade P ₂object,

step 6, iteration above-mentioned steps 3 is to step 5 until meet the condition of convergence, the power division numerical value obtaining is near-optimization value, then each power division numerical value, notifies respectively each user;

So far, power division process finishes, and starts to carry out data information transfer.

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