CN103648155B - A kind of base station user selects, trunk subscriber selects and ownership and power distribution method - Google Patents

Abstract

The invention provides a kind of base station user selection, trunk subscriber selects and ownership and power distribution method.The method includes: determine that all active base transceiver station users, trunk subscriber are respectively to base station and to the channel information of via node respectively；Channel information according to all trunk subscribers to base station and to via node determines selection and the home base station thereof of trunk subscriber；Ownership situation according to selected trunk subscriber, and the channel information that all base station user are to base station and to via node determine respectively via node the right and left base station base station user select；Quality of service requirement according to each selected user and each selected user arrive base station respectively and the channel information to via node determines the minimum emissive power of each selected user.Selected by base station user of the present invention, trunk subscriber selects to improve whole communication system performance with ownership and power distribution method.

Description

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

Technical field:

The present invention relates to wireless communication field, select and merit especially with regard to the user in wireless relay collaboration communication field Rate distribution, specifically a kind of base station user selects, trunk subscriber selects to belong to trunk subscriber and minimum needed for selected user The method of power distribution.

Background technology:

Along with the development of society, people are more and more higher to the performance requirement such as transfer rate, communication security.But, it is available for profit Frequency spectrum resource more and more nervous, in order to meet people to the requirement of communication quality, improve communication quality, and reduce unit The cost of data transmission, proposes to use relay cooperative technology, full cellular cell same frequency multiplex technique etc. the most successively.

The core concept of relay cooperative communication technology is to allow via node to the information from information source end through simply putting Passing to the stay of two nights again after big or compressed encoding or decoding re-encoding, the last stay of two nights recycles all information received, and is decoded.? Under such mode, via node serves certain synergism to the communication between information source and the stay of two nights, it is provided that one Fixed space diversity, can to anti-multipath fading thus improve communication quality, the cost of unit data transfer can be reduced simultaneously. And cellular cell same frequency multiplexing can be obviously improved frequency efficiency entirely.

Then in the collaboration communication mode of single single stay of two nights of information source list relaying, due to the simplex mode of via node, one Complete data transmission to spend two orthogonal channels, and the directly transmission only cost one between this with information source to the stay of two nights is orthogonal Channel is compared, and this space diversity characteristic reduces again frequency efficiency.Simultaneously as the same frequency multiplexing of full cellular cell, meeting Increase the weight of the same frequency signal disturbing between honeycomb.

In LTE-A project, propose two kinds of trunk type: Type-I relayings and Type-II relays.Type-II relaying with The maximum difference in theoretical research of the Type-I relaying is, in Type-II relay scene, and information source (eNB) and the stay of two nights (UE) Between there is direct communication link.Therefore, how under the pattern of full cellular cell same frequency multiplexing, in conjunction with relay cooperative Transmission technology, uses base station user selection, trunk subscriber to select with ownership and power distribution method and promotes systematic function, be worth Further investigation.

Summary of the invention:

It is an object of the invention to improve the homogenous frequency signal interference problem owing to using full community to be aggravated with frequency multiplexing, with And improve the spectrum efficiency under relay cooperative communication pattern.

The embodiment provides the selection of a kind of base station user, trunk subscriber selects and the method for ownership, and often Individual selected user presses the minimum power distribution method needed for quality of service requirement.

Base station user described in embodiments of the invention selects, trunk subscriber selects and ownership and power distribution method, can With under the network topology structure of full rate multiplexing cellular cell with via node, it is considered to how to carry out base station user choosing Select, trunk subscriber selects the minimum power distribution with ownership and each selected user.

According to the present invention, it is provided that a kind of base station user selects, trunk subscriber selects and ownership and power distribution method, including Following steps:

Step 1, suppose via node between two base stations to assist the cell edge user between two base stations Access network；Trunk subscriber is the edge customer between two base stations, and base station user is except edge customer around each base station Other users in addition；Via node adjacent base station is two adjacent with via node base stations, and base station is eNodeB, relaying Node is RN；Active base transceiver station user around eNodeB-1 is: MS₁₁, MS₁₂..., MS_1N；Base is enlivened around eNodeB-2 The user that stands is: MS₂₁, MS₂₂..., MS_2M；Active trunk subscriber is: MS₃₁, MS₃₂..., MS_3K。

Step 2, determine all active base transceiver station users to base station with to the channel information of via node, all active relayings are used Family is to base station with to the channel information of via node, and via node is to the channel information of adjacent base station, the institute after i.e. determining Any active ues channel information to via node with to base station is had to be expressed as:

Base station user MS₁₁, MS₁₂..., MS_1NChannel information to eNodeB-1 is expressed as h₁₁, h₁₂..., h_1N；Base Stand user MS₁₁, MS₁₂..., Ms_1NChannel information to RN is expressed as h_a1, h_a2..., h_aN；Base station user MS₂₁, MS₂₂..., MS_2MChannel information to eNodeB-2 is expressed as h₂₁, h₂₂..., h_2M；Base station user MS₂₁, MS₂₂..., MS_2M Channel information to RN is expressed as h_b1, h_b2..., h_bM；Trunk subscriber MS₃₁, MS₃₂..., MS_3KTo eNodeB-1 with arrive The channel information of eNodeB-2 is expressed as g₁₁, g₁₂..., g_1KAnd g₂₁, g₂₂..., g_2K；Trunk subscriber MS₃₁, MS₃₂..., MS_3KChannel information to RN is expressed as g₃₁, g₃₂..., g_3K；And RN to eNodeB-1 and to eNodeB-2 channel letter Breath is expressed as h_R1And h_R2。

Step 3, according to the g obtained₁₁, g₁₂..., g_1KAnd g₂₁, g₂₂..., g_2KAnd g₃₁, g₃₂..., g_3KAnd h_R1、h_R2 Determine trunk subscriber selection and the home base station of selected trunk subscriber include: turn to choosing with the SNR maximum of trunk subscriber The standard of selecting goes select trunk subscriber and select the home base station of trunk subscriber.Concrete operations are as follows:

A, first, order:Wherein i=1,2,1≤k≤K, P_sAnd P_rRespectively For constant, it is equivalent to the transmitting power of trunk subscriber and RN,WithIt is respectively the noise variance on eNodeB and RN, and

B, then, finds maximum SNR_xy, i.e.Wherein corresponding trunk subscriber y is The trunk subscriber chosen, the corresponding home base station that base station x is the trunk subscriber y chosen.

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

A, the base station user of base station belonged to trunk subscriber y is selected (without loss of generality, it is assumed that trunk subscriber y Home base station be eNodeB-1), first, order:Its InP_sAnd P_rIt is equivalent to the transmitting power of user and RN to be respectively constant,For Noise variance on eNodeB-1；

B, then, finds maximum SINR_1j, i.e.Wherein respective base station user j is The base station user that eNodeB-1 chooses；

C, for not having the base station user of base station that trunk subscriber belongs to select (the most without loss of generality, it is assumed that ENodeB-2 is the base station not having trunk subscriber to belong to), first, order:WithIn formulaAnd Order:Wherein 1≤m≤M, P_sAnd P_rIt is equivalent to respectively to be respectively constant The transmitting power of user and RN,WithBeing respectively the noise variance on eNodeB-2 and RN, Γ >=1 is its value of constant Relevant with modulation system；

D, then, finds maximum R_z, i.e.Wherein respective base station user z is eNodeB- 2 base station user chosen；

Step 5, according to selected trunk subscriber to base station with to the channel information of via node, and the base station selected User determines each institute respectively to base station with to the channel information of via node and the quality of service requirement of each selected user Selecting the minimum emissive power at family, concrete operations are as follows:

Step 5.1, be assumed to be trunk subscriber y provide service quality for requiring the Signal to Interference plus Noise Ratio (signal provided for it To interference and noise ratio, SINR) more than or equal to SINR_r, for the base station user j that eNodeB-1 is selected The service quality provided is for requiring as its SINR provided more than or equal to SINR₁, provide for base station user z selected for eNodeB-2 Service quality for requiring as its SINR provided more than or equal to SINR₂, wherein, without loss of generality, it is assumed that eNodeB-2 is not for There is the base station that trunk subscriber belongs to；

Step 5.2, to initialize the transmitting power of base station user j that eNodeB-1 selected be P₁, initialize eNodeB-2 The transmitting power of the base station user z selected is P₂, the transmitting power of the trunk subscriber y that Initialize chosen is fixed is P₃；

Step 5.3, update trunk subscriber y transmitting power, i.e.

First, order:In formula Wherein P_rFor the transmitting power of RN,WithIt is respectively the noise variance on eNodeB-1 and RN；

Then,Value be assigned to P₃To reach to update P₃Purpose, i.e.

Step 5.4, update base station user j transmitting power, i.e.

First, order:In formulaWith above-mentioned steps 3；

Then,* value is assigned to P₁To reach to update P₁Purpose, i.e.

Step 5.5, update base station user z transmitting power, i.e.

First, order:

Then,Value be assigned to P₂To reach to update P₂Purpose, i.e.

Step 5.6, iteration above-mentioned steps 5.3 to step 5.5 till meeting the condition of convergence, obtain optimum power divide Join numerical value, then power distribution numerical value is notified each user respectively；

So far, power allocation procedure terminates, and proceeds by data information transfer.

Accompanying drawing explanation

By the detailed description non-limiting example made with reference to the following drawings of reading, the further feature of the present invention, Purpose and advantage will become more apparent upon:

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

Fig. 2 be described in the embodiment of the present invention be complete base station user select, trunk subscriber select with belong to abstract Model example figure；

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

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

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

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is described in detail.Following example will assist in the technology of this area Personnel are further appreciated by the present invention, but limit the present invention the most in any form.It should be pointed out that, the ordinary skill to this area For personnel, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement.These broadly fall into the present invention Protection domain.

The present invention is to improve the homogenous frequency signal interference problem that full cellular cell is caused with frequency multiplexing, and in raising Continue the spectrum efficiency of collaboration communication.Embodiments of the invention assume to be provided with a relaying joint between two same frequency multiplexing cellular cells Point, to assist edge customer access communications network, assumes that via node turns after being only amplified the signal received processing simultaneously Issue the stay of two nights.The present invention is directed to user's upstream communication situation to base station.

As it is shown in figure 1, this legend show the application scenarios of the present embodiment: base station, via node, all any active ues are divided Cloth situation abstract model, includes 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 number of, is respectively as follows: MS₁₁, MS₁₂..., MS_1N；Ownership eNodeB-2 enlivens base Number of users of standing is M, is respectively as follows: MS₂₁, MS₂₂..., MS_2M；Enlivening trunk subscriber number is K, is respectively as follows: MS₃₁, MS₃₂..., MS_3K。

In traffic model shown in Fig. 1 example, two cellular cells, with frequency multiplexing, allow in same same time/frequency source block Three users are concurrently accessed communication network, i.e. one trunk subscriber, and an ownership base station user of eNodeB-1 and one The base station user of ownership eNodeB-2.Therefore, the first step of the present invention is user and selects, and i.e. selects from enlivening trunk subscriber One trunk subscriber, each selects a base station from the active base transceiver station user belonging to eNodeB-1 and eNodeB-2 respectively and uses Family, it is assumed that the service priority of each user is identical.

In the present embodiment, user select before preparation be estimation complete any active ues to base station and arrive RN Channel information.Assuming that after channel information has been estimated, each user to base station and as follows to the channel information of RN:

Base station user MS₁₁, MS₁₂..., MS_1NChannel information to eNodeB-1 is respectively h₁₁, h₁₂..., h_1N；Base station is used Family MS₁₁, MS₁₂..., MS_1NChannel information to RN is respectively h_a1, h_a2..., h_aN；Base station user MS₂₁, MS₂₂..., MS_2MArrive The channel information of eNodeB-2 is respectively h₂₁, h₂₂..., h_2M；Base station user MS₂₁, MS₂₂..., MS_2MChannel information to RN divides Wei h_b1, h_b2..., h_bM；Trunk subscriber MS₃₁, MS₃₂..., MS_3KChannel information to eNodeB-1 with to eNodeB-2 is distinguished For g₁₁, g₁₂..., g_1KAnd g₂₁, g₂₂..., g_2K；Trunk subscriber MS₃₁, MS₃₂..., MS_3KChannel information to RN is respectively g₃₁, g₃₂..., g_3K；And RN to eNodeB-1 and the channel information to eNodeB-2 are respectively h_R1And h_R2。

In the present embodiment, it is assumed that eNodeB-1 Yu eNodeB-2 can exchange the channel information of respective gained, therefore, ENodeB-1 and eNodeB-2 has the channel information of all any active ues the most respectively；Or, it is assumed that there is other CP (central processer, CP) node has all users to base station with to the channel information of RN, in the present embodiment, ENodeB-1 or eNodeB-2 can additionally see CP node as.

Carrying out user after all channel informations have been estimated to select and ownership operation, Fig. 2 show the present embodiment at warp Cross after user selects operation, in same time/frequency source block, be concurrently accessed the traffic model figure of communication network, i.e. three users with Time access communications network abstract model.

The user choosing method simplified process of the embodiment of the present invention is as it is shown on figure 3, specifically include that

Step 101: CP is according to all active trunk subscribers to RN with to the channel information of base station, both sides, in maximizing The service quality of user of continuing is that standard determines trunk subscriber to be selected, and the home base station of selected trunk subscriber；

Step 102: based on selected trunk subscriber and home base station information thereof, CP arrives according to all active base transceiver station users Have the base station of attached trunk subscriber and to the channel information of RN, determine with the service quality maximizing base station user for standard have attached The base station user of the base station belonging to trunk subscriber selects；

Step 103: based on selected trunk subscriber and home base station information thereof, CP arrives according to all active base transceiver station users There are the attached base station of trunk subscriber and the channel information to RN, determine for standard with the service quality maximizing base station user in having The base station user of the base station that the user that continues is attached selects.

Specifically, forStep 101, i.e. the selection of trunk subscriber and affiliation method, can be carried out by following derivation Explain in detail.

First, it is assumed that in same time/frequency source block, only one of which trunk subscriber is allowed to access communication network, i.e. there is no base The user that stands exists, and only one of which trunk subscriber assists to access eNodeB-1 or eNodeB-2 by RN；

So eNodeB-i receives the signal noise ratio (SNR) from any one trunk subscriber:

${\mathrm{SNR}}_{ik}=\frac{P_s{\left|g_{ik}\right|}^2}{{\mathrm{\σ}}_b^2}+\frac{P_s{\left|{\mathrm{\α}}_1{h}_{Ri}{g}_{3k}\right|}^2}{{\left|h_{Ri}{\mathrm{\α}}_1\right|}^2{\mathrm{\σ}}_r^2+{\mathrm{\σ}}_b^2},$

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, WithIt is respectively the noise variance on eNodeB-i and RN, and

Then, find and there is the trunk subscriber y of maximum S/N R and the home base station x of correspondence, even:

Wherein corresponding trunk subscriber y is the trunk subscriber chosen, and corresponding base station x is the trunk subscriber y chosen Home base station, originally sentences SNR to represent the service quality of trunk subscriber.

ForStep 102, i.e. there is the base station user system of selection of the attached base station of trunk subscriber, can be by following derivation It is explained in detail.

First, without loss of generality, it is assumed that selected trunk subscriber is trunk subscriber y, and the home base station of trunk subscriber y For eNodeB-1；And ignore eNodeB-2 and the existence of affiliated base station user thereof；And suppose that eNodeB-1 first decodes selected The signal of fixed trunk subscriber y, then further decoding is by the signal of its selected base station user；

So eNodeB-1 receives the Signal Interference and Noise Ratio (SINR) from any one base station user n:

${\mathrm{SINR}}_{1n}=\frac{P_s{\left|h_{1n}\right|}^2}{P_s{\left|g_{1y}\right|}^2+{\mathrm{\σ}}_b^2}+\frac{P_s{\left|{\mathrm{\α}}_2{h}_{R1}{h}_{an}\right|}^2}{{\left|{\mathrm{\α}}_2{h}_{R1}\right|}^2\left(P_s\right|g_{3y}|+{\mathrm{\σ}}_r^2)+{\mathrm{\σ}}_b^2},$

Wherein:P_sAnd P_rIt is equivalent to sending out of user and RN to be respectively constant Penetrate power,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 SINR to represent base station user Service quality.

ForStep 103, i.e. there is no the base station user system of selection of the attached base station of trunk subscriber, can be pushed away by following Lead and be explained in detail.

First, without loss of generality, it is assumed that the base station not having trunk subscriber attached is eNodeB-2, owing to belonging to The signal that the base station user of eNodeB-2 is launched can interfere with the signal that trunk subscriber is launched, so for the base station of eNodeB-2 When user selects, the SINR and the SINR of trunk subscriber of the selected base station user of eNodeB-2 to be considered simultaneously.But, due to The effect of signals that the SINR of the selected base station user j belonging to eNodeB-1 is launched by the selected base station user of eNodeB-2 is very Micro-, therefore can ignore the SINR of the selected base station user j belonging to eNodeB-1 by the base station user belonging to eNodeB-2 The impact of the signal launched.

So eNodeB-2 receives the Signal Interference and Noise Ratio (SINR) from any one base station user m:

${\mathrm{SINR}}_{2m}=\frac{P_s{\left|h_{2m}\right|}^2}{P_s{\left|g_{2m}\right|}^2+{\mathrm{\σ}}_b^2},$

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

${\mathrm{SINR}}_{1ym}=\frac{P_s{\left|g_{1y}\right|}^2}{{\mathrm{\σ}}_b^2}+\frac{P_s{\left|{\mathrm{\α}}_3{h}_{R1}{g}_{3y}\right|}^2}{{\left|h_{R1}{\mathrm{\α}}_3\right|}^2({\mathrm{\σ}}_r^2+P_s{\left|h_{bm}\right|}^2)+{\mathrm{\σ}}_b^2},$

Wherein 1≤m≤M, P_sAnd P_rIt is equivalent to the transmitting power of user and RN respectively to be respectively constant,WithRespectively For the noise variance on eNodeB and RN,

Now can obtain base station user m's and trunk subscriber y and speed is:

And order:

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:

$R_z=\arg \underset{\left\{m\right\}}{\max }\left\{{\mathrm{SINR}}_{1ym}\right\},$

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

So far, base station user select, trunk subscriber select terminate with ownership process, below ingoing power distribute.

The power distribution stream journey figure of the embodiment of the present invention as shown in Figure 4, is elaborated as follows:

Step 200: initialize, it may be assumed that the service quality being assumed to be trunk subscriber y offer is big for requiring as its SINR provided In equal to SINR_r, the service quality provided for base station user j selected for eNodeB-1 is for requiring to be more than for its SINR provided In SINR₁, the service quality provided for base station user z selected for eNodeB-2 is for requiring to be more than or equal to for its SINR provided SINR₂, wherein, without loss of generality, it is assumed that eNodeB-2 is the base station not having trunk subscriber to belong to；And eNodeB-1 is selected The transmitting power of base station user j be P₁, the transmitting power initializing the base station user z that eNodeB-2 is selected is P₂, initialize The transmitting power of the trunk subscriber y selected is P₃；

Step 201: the transmitting power of the base station user of fixing base station, RN both sides, according to the quality of service requirement of trunk subscriber Determine the minimum emissive power of trunk subscriber, it may be assumed that

First, order:

$P_3^{*}=\frac{{\mathrm{SINR}}_r}{\frac{{\left|g_{1y}\right|}^2}{{\mathrm{\σ}}_b^2}+\frac{{\left|{\mathrm{\α}}_4{h}_{R1}{g}_{3y}\right|}^2}{{\left|h_{R1}{\mathrm{\α}}_4\right|}^2({\mathrm{\σ}}_r^2+P_2{\left|h_{bz}\right|}^2)+{\mathrm{\σ}}_b^2}},$

In formulaWherein P_rFor the transmitting power of RN,WithPoint Wei noise variance on eNodeB-1 and RN；

Then,Value be assigned to P₃To reach to update P₃Purpose, it may be assumed that

Step 202: the transmitting power of fixed relay user, according to the service of the base station user of the base station with trunk subscriber Quality requirement, determines the minimum emissive power of the base station user j of the base station with trunk subscriber, it may be assumed that

First, order:

In formula

Then,Value be assigned to P₁To reach to update P₁Purpose, i.e.

Step 203: the transmitting power of fixed relay user, according to the base station user not having trunk subscriber attached base station Quality of service requirement, determines the minimum emissive power of the base station user z of the base station not having trunk subscriber attached, it may be assumed that

First, order:

$P_2^{*}=\frac{{\mathrm{SINR}}_2}{\frac{{\left|h_{2z}\right|}^2}{P_3{\left|g_{2y}\right|}^2+{\mathrm{\σ}}_b^2}},$

Then,Value be assigned to P₂To reach to update P₂Purpose, i.e.

Step 204 and 205: i.e., iteration above-mentioned steps 201 to step 203 is till meeting the condition of convergence, and obtain is near Like optimal power allocation numerical value, then CP notifies each selected user respectively the power distribution numerical value of gained, and so far, power divides Join process to terminate, proceed by data information transfer.

In sum, the brief operation process of the embodiment of the present invention is as it is shown in figure 5, key step includes:

Step 301: determine that all base station user, the trunk subscriber channel respectively to base station and to via node is believed respectively Breath；

Step 302: the channel information according to all trunk subscribers to via node and to base station determines trunk subscriber Select and base station, home to return to；

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

Step 304: arrive via node and the channel information to base station respectively according to selected trunk subscriber, base station user, point Do not determine the transmitting power of each selected user.

The foregoing is only presently preferred embodiments of the present invention, it is to be understood that the invention is not limited in above-mentioned Particular implementation, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should wrap Within being contained in the scope of protection of the invention.

Claims (2)

1. a base station user selection, trunk subscriber select and ownership and power distribution method, it is characterised in that including:

Determine respectively all active base transceiver station users to base station and to via node, all enliven trunk subscriber to base station and to relaying The channel information of node, and via node is to the channel information of adjacent base station；

Step 101, the selection of trunk subscriber and affiliation method:

First, it is assumed that in same time/frequency source block, only one of which trunk subscriber is allowed to access communication network, base station is not i.e. had to use Family exists, and only one of which trunk subscriber assists to access eNodeB-1 or eNodeB-2 by RN；

So eNodeB-i receives the signal noise ratio from any one trunk subscriber:

${\mathrm{SNR}}_{ik}=\frac{P_s|g_{ik}{|}^2}{{\mathrm{\σ}}_b^2}+\frac{P_s|{\mathrm{\α}}_1{h}_{Ri}{g}_{3k}{|}^2}{|h_{Ri}{\mathrm{\α}}_1{|}^2{\mathrm{\σ}}_r^2+{\mathrm{\σ}}_b^2},$

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 It is respectively the noise variance on eNodeB-i and RN, and

Then, find and there is the trunk subscriber y of peak signal noise ratio and the home base station x of correspondence, even:

Wherein corresponding trunk subscriber y is the trunk subscriber chosen, the corresponding ownership that base station x is the trunk subscriber y chosen Base station；

Step 102, i.e. has a base station user system of selection of the attached base station of trunk subscriber:

Without loss of generality, it is assumed that selected trunk subscriber is trunk subscriber y, and the home base station of trunk subscriber y is first, eNodeB-1；And ignore eNodeB-2 and the existence of affiliated base station user thereof；And suppose that eNodeB-1 first decodes chosen The signal of trunk subscriber y, then further decoding is by the signal of its selected base station user；

So eNodeB-1 receives the Signal Interference and Noise Ratio from any one base station user n:

${\mathrm{SINR}}_{1n}=\frac{P_s|h_{1n}{|}^2}{P_s|g_{1y}{|}^2+{\mathrm{\σ}}_b^2}+\frac{P_s|{\mathrm{\α}}_2{h}_{R1}{h}_{an}{|}^2}{|{\mathrm{\α}}_2{h}_{R1}{|}^2\left(P_s\right|g_{3y}|+{\mathrm{\σ}}_r^2)+{\mathrm{\σ}}_b^2},$

Wherein:

Then, find the base station user j with peak signal interference-to-noise ratio, 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；

Step 103, does not i.e. have a base station user system of selection of the attached base station of trunk subscriber:

First, without loss of generality, it is assumed that the base station not having trunk subscriber attached is eNodeB-2, owing to belonging to eNodeB-2's The signal that base station user is launched can interfere with the signal that trunk subscriber is launched, so the base station user for eNodeB-2 selects Time, the Signal Interference and Noise Ratio of the selected base station user of eNodeB-2 and the signal disturbing noise of trunk subscriber will be considered simultaneously Ratio；But, owing to belonging to the Signal Interference and Noise Ratio selected base station by eNodeB-2 of the selected base station user j of eNodeB-1 The effect of signals that user launches is little, and the signal disturbing that therefore can ignore the selected base station user j belonging to eNodeB-1 is made an uproar The signal that acoustic ratio is launched by the base station user belonging to eNodeB-2 is affected；

So eNodeB-2 receives the Signal Interference and Noise Ratio from any one base station user m:

${\mathrm{SINR}}_{2m}=\frac{P_s|h_{2m}{|}^2}{P_s|g_{2m}{|}^2+{\mathrm{\σ}}_b^2},$

And now eNodeB-1 receives the Signal Interference and Noise Ratio from trunk subscriber y and is:

${\mathrm{SINR}}_{1ym}=\frac{P_s|g_{1y}{|}^2}{{\mathrm{\σ}}_b^2}+\frac{P_s|{\mathrm{\α}}_3{h}_{R1}{g}_{3y}{|}^2}{|h_{R1}{\mathrm{\α}}_3{|}^2({\mathrm{\σ}}_r^2+P_s|h_{bm}{|}^2)+{\mathrm{\σ}}_b^2},$

Wherein 1≤m≤M,

Now can obtain base station user m's and trunk subscriber y and speed is:

$R_m={\log }_2(1+\frac{{\mathrm{SINR}}_{2m}}{\mathrm{\Γ}})+{\log }_2(1+\frac{{\mathrm{SINR}}_{1ym}}{\mathrm{\Γ}}),$

Γ >=1 is a constant, and its value is relevant with modulation system；

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

$R_z=\arg \underset{\left\{m\right\}}{max}\left\{{\mathrm{SINR}}_{1ym}\right\},$

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

Step 200, initializes: be assumed to be the service quality of trunk subscriber y offer for requiring the signal disturbing noise provided for it Ratio is more than or equal to SINR_r, the service quality provided for base station user j selected for eNodeB-1 is dry for requiring as its signal provided Disturb noise ratio more than or equal to SINR₁, the service quality that provides for base station user z selected for eNodeB-2 is for requiring to provide for it Signal Interference and Noise Ratio is more than or equal to SINR₂, wherein, without loss of generality, it is assumed that eNodeB-2 is not have trunk subscriber to belong to Base station；And the transmitting power of base station user j that eNodeB-1 is selected is P₁, initialize the base station use that eNodeB-2 is selected The transmitting power of family z is P₂, the transmitting power of the trunk subscriber y that Initialize chosen is fixed is P₃；

Step 201, the transmitting power of the base station user of fixing base station, RN both sides, determine according to the quality of service requirement of trunk subscriber The minimum emissive power of trunk subscriber, it may be assumed that

First, order:

$P_3^{*}=\frac{{\mathrm{SINR}}_r}{\frac{|g_{1y}{|}^2}{{\mathrm{\σ}}_b^2}+\frac{|{\mathrm{\α}}_4{h}_{R1}{g}_{3y}{|}^2}{|h_{R1}{\mathrm{\α}}_4{|}^2({\mathrm{\σ}}_r^2+P_2|h_{bz}{|}^2)+{\mathrm{\σ}}_b^2}},$

In formula

Then,Value be assigned to P₃To reach to update P₃Purpose, it may be assumed that

Step 202, the transmitting power of fixed relay user, according to the service quality of the base station user of the base station with trunk subscriber Requirement, determines the minimum emissive power of the base station user j of the base station with trunk subscriber, it may be assumed that

First, order:

In formula

Then,Value be assigned to P₁To reach to update P₁Purpose, i.e.

Step 203, the transmitting power of fixed relay user, according to the service of the base station user not having the attached base station of trunk subscriber Quality requirement, determines the minimum emissive power of the base station user z of the base station not having trunk subscriber attached, it may be assumed that

First, order:

$P_2^{*}=\frac{{\mathrm{SINR}}_2}{\frac{|h_{2z}{|}^2}{P_3|g_{2y}{|}^2+{\mathrm{\σ}}_b^2}},$

Then,Value be assigned to P₂To reach to update P₂Purpose, i.e.

Step 204, iteration above-mentioned steps 201 to step 203 is till meeting the condition of convergence；

Step 205, the near-optimization power obtained distribution numerical value, then CP notifies each respectively the power distribution numerical value of gained Selected user, so far, power allocation procedure terminates, and proceeds by data information transfer；

Wherein, the cell edge user access between two base stations so that between two base stations of assistance of the described via node Communication network；Described trunk subscriber is the edge customer between two base stations, and described base station user is each base station Other users in addition to edge customer around；Base station is eNodeB, and via node is RN；Enliven around eNodeB-1 Base station user be: MS₁₁, MS₁₂..., MS_1N；Base station user active around eNodeB-2 is: MS₂₁, MS₂₂..., MS_2M；Two Inactive edge trunk subscriber between individual base station is: MS₃₁, MS₃₂..., MS_3K；

Described determine that all active base transceiver station users, to base station and to the channel information of via node, all enliven trunk subscriber respectively To base station and to the channel information of via node, and via node is to the channel information of adjacent base station, including:

MS₁₁, MS₁₂..., MS_1NChannel information to eNodeB-1 is expressed as h₁₁, h₁₂..., h_1N, MS₁₁, MS₁₂..., MS_1N Channel information to RN is expressed as h_a1, h_a2..., h_aN；

MS₂₁, MS₂₂..., MS_2MChannel information to eNodeB-2 is expressed as h₂₁, h₂₂..., h_2M, MS₂₁, MS₂₂..., MS_2M Channel information to RN is expressed as h_b1, h_b2..., h_bM；

MS₃₁, MS₃₂..., MS_3KChannel information to eNodeB-1 with to eNodeB-2 is expressed as g₁₁, g₁₂..., g_1KWith g₂₁, g₂₂..., g_2K；MS₃₁, MS₃₂..., MS_3KChannel information to RN is expressed as g₃₁, g₃₂..., g_3K；And RN arrives ENodeB-1 and the channel information to eNodeB-2 are expressed as h_R1And h_R2。

Method the most according to claim 1, it is characterised in that described according to the g obtained₁₁, g₁₂..., g_1KAnd g₂₁, g₂₂..., g_2KAnd g₃₁, g₃₂..., g_3KAnd h_R1、h_R2Determine respectively trunk subscriber selection and the returning of selected trunk subscriber Belong to base station to include: turn to selection standard with the signal noise ratio maximum of trunk subscriber and go select trunk subscriber and select trunk subscriber Home base station.