CN106304365A - TD LTE electric power wireless private network efficiency resource allocation methods and system - Google Patents

Abstract

The present invention provides a kind of TD LTE electric power wireless private network efficiency resource allocation methods and system, set up asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, obtain asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution, obtain the total energy consumption of asymmetric cooperative system, obtain the energy efficiency function expression of asymmetric cooperative system, optimize the energy efficiency of asymmetric cooperative system, obtain number of antennas optimal solution and launch power optimal scheme solution, update number of antennas be number of antennas optimal solution and update transmitting power be assigned as launch power optimal scheme solution, the energy efficiency of the asymmetric cooperative system of repeated optimization, until optimal antenna number is all restrained with optimum transmitting power distribution.During whole, solve and obtain maximizing the optimum cooperation antenna number of system energy efficiency and optimum transmitting power distribution, it is not necessary to take and too much go journey bandwidth, it is possible to significantly improve TD LTE electric power private wireless network system efficiency.

Description

TD-LTE electric power wireless private network efficiency resource allocation methods and system

Technical field

The present invention relates to communication system of power grids technical field, particularly relate to TD-LTE electric power wireless private network efficiency resource distribution side Method and system.

Background technology

Centralized TD-LTE (Time Division Long Term) electric power wireless private network passes through coordinated allocation power and band The resources such as width realize cooperation transmission.The general efficiency resource for centralized TD-LTE electric power wireless private network cooperation transmission is divided Method of completing the square with maximize system energy efficiency as target, it may be assumed that on the one hand utilize the cooperation between antenna to promote handling up of system Amount；On the other hand reduce system total energy consumption as far as possible by the distribution of the resource such as power, Base-Band Processing, thus constantly increase meeting Energy-saving and emission-reduction are achieved while long traffic demands.

But, it is currently used for the efficiency resource allocation methods existence of centralized TD-LTE electric power wireless private network cooperation transmission Problem is: 1) lack the energy consumption model being applicable to cooperation scene.2) there is unnecessary antenna cooperative.All can build with terminal The antenna of vertical communication link both participates in cooperation transmission, is gone journey bandwidth to increase burden, user/business that the system of restriction can accommodate Number.

The problems referred to above the most seriously restrict TD-LTE electric power private wireless network system efficiency.

Summary of the invention

Based on this, it is necessary to seriously restrict TD-LTE for general TD-LTE electric power wireless private network efficiency Resource Allocation Formula The problem of electric power private wireless network system efficiency, it is provided that a kind of TD-LTE electric power private wireless network system efficiency of can significantly improving TD-LTE electric power wireless private network efficiency resource allocation methods and system.

A kind of TD-LTE electric power wireless private network efficiency resource allocation methods, including step:

The network architecture according to TD-LTE electric power wireless private network and cooperation transmission indexed variable, set up asymmetric cooperation system System；

According to asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, it is thus achieved that asymmetric cooperation system System handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution；

Obtaining the total energy consumption of asymmetric cooperative system, wherein, total energy consumption includes Base-Band Processing energy consumption, power amplifier energy Consumption, radio frequency part energy consumption and additional energy；

According to asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness launching power distribution and non- The total energy consumption of symmetrical cooperative system, obtains the energy efficiency function expression of asymmetric cooperative system；

Energy efficiency function expression according to asymmetric cooperative system, optimizes the energy efficiency of asymmetric cooperative system, Obtain number of antennas optimal solution and launch power optimal scheme solution；

Update number of antennas be number of antennas optimal solution and update transmitting power be assigned as launch power optimal scheme solution, weight Optimize the energy efficiency of asymmetric cooperative system again, until optimal antenna number is all restrained with optimum transmitting power distribution.

A kind of TD-LTE electric power wireless private network efficiency resource allocation system, including:

System sets up module, for the network architecture according to TD-LTE electric power wireless private network and cooperation transmission indexed variable, Set up asymmetric cooperative system；

Relativeness acquisition module, for according to asymmetric cooperative system, desired by Jensen's inequality and meansigma methods Conversion, it is thus achieved that asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution；

Total energy consumption acquisition module, for obtaining the total energy consumption of asymmetric cooperative system, wherein, total energy consumption includes Base-Band Processing Energy consumption, power amplifier energy consumption, radio frequency part energy consumption and additional energy；

Functional expression acquisition module, for dividing with number of antennas and transmitting power according to asymmetric cooperative system handling capacity lower bound The relativeness joined and the total energy consumption of asymmetric cooperative system, obtain the energy efficiency function representation of asymmetric cooperative system Formula；

Optimize module, for the energy efficiency function expression according to asymmetric cooperative system, optimize asymmetric cooperation system The energy efficiency of system, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution；

More new module, is used for updating number of antennas and is number of antennas optimal solution and updates transmitting power and be assigned as launching power Optimal scheme solution, the energy efficiency of the asymmetric cooperative system of repeated optimization, until optimal antenna number divides with optimum power of launching Join and all restrain.

TD-LTE electric power wireless private network efficiency resource allocation methods of the present invention and system, according to TD-LTE electric power wireless private network The network architecture and cooperation transmission indexed variable, set up asymmetric cooperative system, desired by Jensen's inequality and meansigma methods Conversion, it is thus achieved that asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution, it is non-right to obtain Claim the total energy consumption of cooperative system, obtain the energy efficiency function expression of asymmetric cooperative system, optimize asymmetric cooperative system Energy efficiency, it is thus achieved that number of antennas optimal solution and launch power optimal scheme solution, updating number of antennas is that number of antennas is optimum Solve and update transmitting power be assigned as launch power optimal scheme solution, the energy efficiency of the asymmetric cooperative system of repeated optimization, directly All restrain to optimal antenna number with optimum transmitting power distribution.During whole, it is wireless specially that foundation is applicable to TD-LTE electric power The asymmetric cooperative system of the scene that cooperates in net, and the efficiency resource allocation algorithm of asymmetric cooperation transmission is proposed, solve and obtain Maximize the optimum cooperation antenna number of system energy efficiency and optimum transmitting power distribution, it is not necessary to take and too much go journey bandwidth, TD-LTE electric power private wireless network system efficiency can be significantly improved.

Accompanying drawing explanation

Fig. 1 is the flow process signal of TD-LTE electric power wireless private network first embodiment of efficiency resource allocation methods of the present invention Figure；

Fig. 2 is the network architecture schematic diagram of TD-LTE electric power wireless private network；

Fig. 3 is the flow process signal of TD-LTE electric power wireless private network second embodiment of efficiency resource allocation methods of the present invention Figure；

Fig. 4 is the structural representation of TD-LTE electric power wireless private network first embodiment of efficiency resource allocation system of the present invention Figure；

Fig. 5 is the structural representation of TD-LTE electric power wireless private network second embodiment of efficiency resource allocation system of the present invention Figure.

Detailed description of the invention

As it is shown in figure 1, a kind of TD-LTE electric power wireless private network efficiency resource allocation methods, including step:

S100: according to the network architecture and the cooperation transmission indexed variable of TD-LTE electric power wireless private network, set up asymmetric association Make system.

The network architecture of TD-LTE electric power wireless private network can obtain based on historical experience, specifically, as in figure 2 it is shown, In Fig. 2, UE refers to communication terminal, and RRH is radio frequency unit, and BBU is baseband processing unit.More specifically relevant parameter such as table 1 below

Table 1 TD-LTE electric power private wireless network system model parameter

For terminal k, its signal received is:

$y_k=h_k^H\·{\mathrm{\ω}}_k\·s_k+\underset{m\≠k}{\Σ}{h}_k^H\·{\mathrm{\ω}}_m\·s_m+z_k$

In formula,The useful signal received for terminal k；For interference signal；z_kFor noise, Meet E [| | z_k| |]=0 and

Cooperation transmission can effectively eliminate interference, and above-mentioned formula Section 2 interference signal is 0, thus obtains what terminal received Signal is:

$y_k=h_k^H\·{\mathrm{\ω}}_k\·s_k+z_k$

The Signal to Interference plus Noise Ratio SINR of terminal k is

${\mathrm{\ζ}}_k=\frac{\left|\right|h_k^H{\mathrm{\ω}}_k|{|}^2}{{\mathrm{\σ}}_k^2}$

In the centralized TD-LTE network architecture, processing center BBU has complete CSI (Channel State Information, channel status) information.Journey bandwidth waste is gone in order to reduce that unnecessary antenna cooperative brings, more to access Number of users, in asymmetric cooperation transmission the most all of RRH (Remote Radio Head, remote radio head) participate in cooperation, But only part RRH participates in cooperation transmission (i.e. processing center BBU has a data message of all terminals, but can't be by All information carry out the precoding that cooperates, also will not be by precoding and data message by going journey link transmission to all RRH), fixed Justice cooperation transmission indexed variable:

Build whole asymmetric cooperative system.

Wherein in an embodiment, step S100 includes:

Step one: obtain the network architecture of TD-LTE electric power wireless private network.

The network architecture of TD-LTE electric power wireless private network can obtain based on historical empirical data, specifically may refer to Fig. 2, It is the network architecture schematic diagram of typical TD-LTE electric power wireless private network.It addition, also may be used under the application scenarios that some is special To update the network architecture of TD-LTE electric power wireless private network based on actual application scenarios.

Step 2: cooperation transmission indexed variable in definition TD-LTE electric power wireless private network.

Step 3: identify and participate in the RRH of cooperation in the TD-LTE asymmetric cooperation transmission of electric power wireless private network and have neither part nor lot in association The RRH made.

Participate in gathering to the RRH of user's k cooperation transmission data being expressed as:

Γ_k=n | n ∈ Γ, t_n,k=1}

The transmitting power having neither part nor lot in the RRH to user's k cooperation transmission data distributes P_n,kMeet

$P_{n,k}=0,n\∉{\mathrm{\Γ}}_k$

In formula, P_n,kTransmitting power for radio frequency unit RRH n to terminal k distributes.

Step 4: record participates in the RRH set of cooperation, and records the transmitting power distribution of the RRH having neither part nor lot in cooperation.

Step 5: build asymmetric cooperative system.

S200: according to asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, it is thus achieved that asymmetric association Make throughput of system lower bound and number of antennas and the relativeness of transmitting power distribution.

Asymmetric cooperative system handling capacity lower bound can use letter with the relativeness of number of antennas and transmitting power distribution Numerical expression mode characterizes, and its concrete formula will launch to describe in the following.

S300: obtaining the total energy consumption of asymmetric cooperative system, wherein, total energy consumption includes Base-Band Processing energy consumption, power amplification Device energy consumption, radio frequency part energy consumption and additional energy.

The total energy consumption of asymmetric cooperative system mainly includes Base-Band Processing energy consumption P_bb, power amplifier energy consumption P_PA, radio-frequency part Divide energy consumption P_RF, additional energy P_OVFour parts, it may be assumed that

P_total=P_bb+P_PA+P_RF+P_OV

Base-Band Processing energy consumption P_bb, power amplifier energy consumption P_PA, radio frequency part energy consumption P_RF, additional energy P_OVFour parts are permissible Based on historical empirical data, or obtain by external instrument device measuring, additionally can also be used by computer and calculate in real time Mode obtains.

As it is shown on figure 3, wherein in an embodiment, step S300 includes:

S320: obtain in code encoding/decoding mode and precoding mode, the asymmetric cooperative system of TD-LTE electric power wireless private network Active terminals number in number of antennas and asymmetric cooperative system.

The network architecture based on TD-LTE electric power wireless private network and relevant preset configuration parameter can obtain TD-LTE The code encoding/decoding mode of electric power wireless private network and number of antennas in precoding mode, asymmetric cooperative system and the asymmetric system that cooperates Active terminals number in system.

S340: calculate the Base-Band Processing energy consumption of asymmetric cooperative system.

S360: obtain asymmetric cooperative system intermediate power amplifier energy consumption, radio frequency part energy consumption and additional energy.

Asymmetric cooperative system intermediate power amplifier energy consumption, radio frequency part energy consumption and additional energy can be by outside instrument Device equipment measures, gathers or uses the parameter of Real-time Collection to calculate.

S380: calculate the total energy consumption of asymmetric cooperative system.

Rigorous mathematical formulae will be used below, the explaining in detail of total energy consumption of asymmetric cooperative system is discussed in detail Journey.

Base-Band Processing energy consumption P_bbMainly include that signal processing encodes energy consumption P_codec, decoding energy consumption P_decodecAnd precoding energy Consumption P_precod, it may be assumed that

P_bb=P_codec+P_decodec+P_precod

Signal processing coding energy consumption P_codecWith decoding energy consumption P_decodecDetermined by the coded system of TD-LTE system, as QPSK, 16QAM, 64QAM etc., with cooperation antenna number N, number K is unrelated for active terminals, can be considered fixed value.P_precodDepend on concrete Precoding algorithms and to cooperation antenna number N, number K is relevant for active terminals.The precoding energy consumption of ZF precoding ZF algorithm is:

$P_{precod}=\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)$

In formula, ξ is the floating-point operation number of unit energy consumption, signal processing chip determine, can be considered fixed value.

As a example by ZF precoding ZF algorithm, ZF precoding ZF algorithm Base-Band Processing energy consumption P_bbFor:

$P_{bb}=P_{codec}+P_{decodec}+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)$

The energy consumption of power amplifier is P_PA

$P_{PA}=\underset{k=1}{\overset{K}{\Σ}}\frac{1}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\left|\right|{\mathrm{\ω}}_k^H{\mathrm{\ω}}_k|{|}^2$

Power amplifier energy consumption formulas is asked expectation, can obtain

In above formulaRepresent expectation, when using ZF precoding ZF algorithm,It is calculated as follows

$\begin{array}{c}\left|\right|{\mathrm{\ω}}_k^H{\mathrm{\ω}}_k|{|}^2=P_k|\left|{\left(h_k{\left(h_k^H{h}_k\right)}^{-1}\right)}^H{h}_k{\left(h_k^H{h}_k\right)}^{-1}\right|{|}^2\\ =P_k\left|\right|{\left({\left(h_k^H{h}_k\right)}^{-1}\right)}^H{h}_k^H{h}_k{\left(h_k^H{h}_k\right)}^{-1}|{|}^2\\ =P_k\left|\right|{\left({\left(h_k^H{h}_k\right)}^{-1}\right)}^H|{|}^2=P_k\·|\left|{\left(h_k^H{h}_k\right)}^{-1}\right|{|}^2\end{array}$

Can be obtained by Wishart (Vichy is special) matrix distribution character,

In formula, λ is matrixEigenvalue,

Power amplifier energy consumption P_PACan be expressed as:

$P_{PA}=\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·N\mathrm{\ρ}\·\frac{1}{N-1}{A}_{\mathrm{\λ}}$

η in above formula_PA=31.1%, ρ are normalized emission power allocation factor；Owing to have employed centralized TD-LTE portion Administration, the power amplifier installation site of RRH is near antenna, it is possible to achieve natural cooling σ_feed=0.

Radio frequency energy consumption is P_RF.Owing to power amplifier individually being calculated as energy consuming components, logical at given encoding rate etc. On the basis of letter parameter, radio frequency part energy consumption P_RFIt is fixed value relatively, specific as follows shown.The power consumption of overhead is P_OV。P_OV Three sub-components relating to power supply of main consideration, i.e. AC/DC and DC/DC conversion and cooling assembly, computing formula is

P_OV=(P_bb+P_RF+P_PA)×((1+η_cool)(1+η_dcdc)(1+η_acdc)-1)

For centralized TD-LTE, cooling segment coefficient η_coolIt is 10%, power pack coefficient η_dcdcIt is 5%, hands over straight Stream conversion coefficient η_acdcIt is 10%.

Observed by formula, after determining correlation coefficient, for BBU, additional energy P_OVAccount for Base-Band Processing energy consumption, merit Rate amplifier and the fixed proportion of radio frequency energy consumption summation, about 25%.

To sum up formula understands, and when using ZF precoding ZF algorithm, total system power consumption is:

$\begin{array}{c}{P}_{total}=\left(\right(P_{codec}+P_{decodec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·N\mathrm{\ρ}\·\frac{1}{N-1}{A}_{\mathrm{\λ}}+P_{RF})\\ \×(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})\end{array}$

S400: according to asymmetric cooperative system handling capacity lower bound and number of antennas and launch relativeness that power distributes with And the total energy consumption of asymmetric cooperative system, obtain the energy efficiency function expression of asymmetric cooperative system.

Distribute based on the asymmetric cooperative system handling capacity lower bound obtained and number of antennas and transmitting power The total energy consumption of the asymmetric cooperative system of relativeness and acquisition, can directly obtain the energy efficiency of asymmetric cooperative system Function expression.

As a example by for ZF ZF precoding, the concrete function expression of energy efficiency EE of asymmetric cooperative system is:

S500: according to the energy efficiency function expression of asymmetric cooperative system, optimize the energy of asymmetric cooperative system Efficiency, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution.

Optimal antenna selects: assume that normalized emission power allocation factor ρ is constant, owing to number of antennas N is very big, thereforeThen observe above-mentioned formula, can obtain

$\begin{array}{c}{\mathrm{max\η}}_{EE}=\frac{K\×B\×{\log }_2(1+\frac{1}{{\mathrm{\σ}}^2}N\mathrm{\ρ})}{\left(\right(P_{codec}+P_{decodec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·{\mathrm{\ρA}}_{\mathrm{\λ}}+P_{RF})\×(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\\ =\frac{K\×B}{(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\·\frac{{\log }_2(1+\frac{1}{{\mathrm{\σ}}^2}\mathrm{\ρ}N)}{(P_{codec}+P_{decodec}+\frac{2}{3\mathrm{\ξ}}{K}^3+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·{\mathrm{\ρA}}_{\mathrm{\λ}}+P_{RF})+\frac{3K^3+2K}{\mathrm{\ξ}}N}\end{array}$

It meetsForm, and then foundationThe optimal solution obtaining number of antennas is:

$N_{opt}=\frac{e^{W\left(\frac{\frac{1}{{\mathrm{\σ}}^2}\mathrm{\ρ}\·\left(\right(P_{codec}+P_{decodec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·{\mathrm{\ρA}}_{\mathrm{\λ}}+P_{RF})-\frac{K\×B}{(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\·\frac{3K^3+2K}{\mathrm{\ξ}}}{\left(\frac{3K^3+2K}{\mathrm{\ξ}}\right)e}\right)+1}-\frac{K\×B}{(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}}{\frac{1}{{\mathrm{\σ}}^2}\mathrm{\ρ}}$

Optimum power of launching distributes: for the optimal antenna number N tried to achieve_opt, the above-mentioned formula of observation type can obtain

$\begin{array}{c}{\mathrm{max\η}}_{EE}=\frac{K\×B\×{\log }_2(1+\frac{1}{{\mathrm{\σ}}^2}N\mathrm{\ρ})}{\left(\right(P_{codec}+P_{decpdec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·N\mathrm{\ρ}\·\frac{1}{N-1}{A}_{\mathrm{\λ}}+P_{RF})\×(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\\ =\frac{K\×B}{(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\·\frac{{\log }_2(1+\frac{1}{{\mathrm{\σ}}^2}N\mathrm{\ρ})}{(P_{codec}+P_{decodec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+P_{RF}+\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·\frac{N}{N-1}{A}_{\mathrm{\λ}}\·\mathrm{\ρ}}\end{array}$

It also meetsForm, and then can foundationObtaining its optimal solution is:

${\mathrm{\ρ}}_{opt}=\frac{e^{W\left(\frac{\frac{1}{{\mathrm{\σ}}^2}(N\·(P_{codec}+P_{decpdec})+\frac{1}{\mathrm{\ξ}}\·(3K^{3}N+2KN+\frac{2}{3}{K}^3)+P_{RF})-\frac{K\×B}{(1+{\mathrm{\η}}_{cool})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}\·\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·\frac{N}{N-1}{A}_{\mathrm{\λ}}}{(\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·\frac{N}{N-1}{A}_{\mathrm{\λ}}e)}\right)+1}-\frac{K\×B}{(1+{\mathrm{\η}}_{coo1})(1+{\mathrm{\η}}_{dcdc})(1+{\mathrm{\η}}_{acdc})}}{\frac{1}{{\mathrm{\σ}}^2}N}$

S600: update number of antennas be number of antennas optimal solution and update transmitting power be assigned as launch power optimal scheme Solve, the energy efficiency of the asymmetric cooperative system of repeated optimization, until optimal antenna number is all restrained with optimum transmitting power distribution.

Utilize the optimal antenna number N that step S500 is tried to achieve_optAnd optimum normalized emission power allocation factor ρ_opT generation For initial antenna number N and normalized emission power allocation factor ρ, the energy efficiency of the asymmetric cooperative system of repeated optimization, Until optimal antenna number N_optAnd optimum normalized emission power allocation factor ρ_optAll restrain, obtain making asymmetric cooperation system Antenna number and transmitting power that energy efficiency is optimum distribute.

TD-LTE electric power wireless private network efficiency resource allocation methods of the present invention, according to the network of TD-LTE electric power wireless private network Framework and cooperation transmission indexed variable, set up asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, obtain Obtaining asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution, obtaining asymmetric cooperation is The total energy consumption of system, obtains the energy efficiency function expression of asymmetric cooperative system, optimizes the energy dose-effect of asymmetric cooperative system Rate, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution, updates number of antennas and is number of antennas optimal solution and updates Launch power and be assigned as launching power optimal scheme solution, the energy efficiency of the asymmetric cooperative system of repeated optimization, until optimum sky Line number is all restrained with optimum transmitting power distribution.During whole, set up and cooperate be applicable to TD-LTE electric power wireless private network The asymmetric cooperative system of scene, and the efficiency resource allocation algorithm of asymmetric cooperation transmission is proposed, solve and obtain maximizing system The optimum cooperation antenna number of system energy efficiency and optimum transmitting power distribution, it is not necessary to take and too much go journey bandwidth, it is possible to be notable Improve TD-LTE electric power private wireless network system efficiency.

As it is shown on figure 3, wherein in an embodiment, step S200 includes:

S220: according to asymmetric cooperative system and shannon formula, calculates terminal data rate in asymmetric cooperative system.

Can be obtained by shannon formula, terminal k up to data rate C_kFor:

$C_k={\mathrm{Blog}}_2(1+\frac{\left|\right|h_k^H{\mathrm{\ω}}_k|{|}^2}{{\mathrm{\σ}}^2})$

In formula, σ²For noise average power.

S240: according to terminal data rate, calculate the total throughout of asymmetric cooperative system.

The total throughout of asymmetric cooperative system is:

$C=\underset{k=1,n\∈{\mathrm{\Γ}}_k}{\overset{K}{\Σ}}{C}_k=\underset{k=1,n\∈{\mathrm{\Γ}}_k}{\overset{K}{\Σ}}{\mathrm{Blog}}_2(1+\frac{\left|\right|h_k^H{\mathrm{\ω}}_k|{|}^2}{{\mathrm{\σ}}^2}).$

S260: use Jensen's inequality that the total throughout calculation of asymmetric cooperative system is converted and put down Average expectation processes, and obtains asymmetric cooperative system handling capacity lower bound and by number of antennas and launches the function representation that power distributes Formula.

As a example by ZF precoding (ZF, Zero-forcing) algorithm, make precoding vector ω_kCalculate for ZF precoding Method, the most satisfied:

WhereinTransmitting power distribution for sky alignment terminal k of all participation cooperation transmission.

Asymmetric cooperative system total throughout based on ZF precoding ZF algorithm is:

$C=\underset{k=1,n\∈{\mathrm{\Γ}}_k}{\overset{K}{\Σ}}{C}_k=\underset{k=1,n\∈{\mathrm{\Γ}}_k}{\overset{K}{\Σ}}{\mathrm{Blog}}_2(1+\frac{P_k}{{\mathrm{\σ}}^2})$

Based on Jensen's inequality, overall system throughput calculation is converted, has obtained the lower bound of throughput of system:

In formula,Represent expectation.

Definition ρ is normalized transmitting power allocation factor, then what transmitting power distributed is desired for:

By the product that throughput of system lower bound equivalence transformation is active terminals number and the expected value of terminal throughput,

Wherein in an embodiment, according to the energy efficiency function expression of asymmetric cooperative system, optimize asymmetric The energy efficiency of cooperative system, it is thus achieved that the step of number of antennas optimal solution and transmitting power optimal scheme solution includes:

Step one: obtain the energy efficiency function expression of asymmetric cooperative system.

Step 2: definition is launched power and is assigned as constant, simplifies the energy efficiency function expression of asymmetric cooperative system, Solve the function expression of number of antennas optimal solution.

Step 3: according to the energy dose-effect of the asymmetric cooperative system after number of antennas optimal solution function expression and simplification Rate function expression, solves the function expression launching power optimal scheme solution.

Wherein in an embodiment, also include before the step of the total energy consumption obtaining asymmetric cooperative system:

Based on meansigma methods expectation conversion and Vichy spy's Matrix Properties, it is thus achieved that power amplifier energy consumption and number of antennas and Penetrate the relativeness of power distribution.

Power amplifier energy consumption can be next with employing functional expression form with the relativeness of number of antennas and transmitting power distribution Characterizing, its concrete functional expression is:

$P_{PA}=\frac{K}{{\mathrm{\η}}_{PA}(1-{\mathrm{\σ}}_{feed})}\·N\mathrm{\ρ}\·\frac{1}{N-1}{A}_{\mathrm{\λ}}$

Its concrete calculating process refers to foregoing, does not repeats them here.

As shown in Figure 4, a kind of TD-LTE electric power wireless private network efficiency resource allocation system, including:

System sets up module 100, becomes with cooperation transmission mark for the network architecture according to TD-LTE electric power wireless private network Amount, sets up asymmetric cooperative system.

Relativeness acquisition module 200, for according to asymmetric cooperative system, expecting by Jensen's inequality and meansigma methods Conversion, it is thus achieved that asymmetric cooperative system handling capacity lower bound and number of antennas and launch the relativeness that power distributes.

Total energy consumption acquisition module 300, for obtaining the total energy consumption of asymmetric cooperative system, wherein, total energy consumption includes base band Process energy consumption, power amplifier energy consumption, radio frequency part energy consumption and additional energy.

Functional expression acquisition module 400, for according to asymmetric cooperative system handling capacity lower bound and number of antennas and transmitting merit The relativeness of rate distribution and the total energy consumption of asymmetric cooperative system, obtain the energy efficiency function table of asymmetric cooperative system Reach formula.

Optimize module 500, for the energy efficiency function expression according to asymmetric cooperative system, optimize asymmetric cooperation The energy efficiency of system, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution.

More new module 600, is used for updating number of antennas and is number of antennas optimal solution and updates transmitting power and be assigned as launching Power optimal scheme solution, the energy efficiency of the asymmetric cooperative system of repeated optimization, until optimal antenna number launches merit with optimum Rate distribution all restrains.

TD-LTE electric power wireless private network efficiency resource allocation system of the present invention, system sets up module 100 according to TD-LTE electricity The network architecture of power wireless private network and cooperation transmission indexed variable, set up asymmetric cooperative system, relativeness acquisition module 200 By the desired conversion of Jensen's inequality and meansigma methods, it is thus achieved that asymmetric cooperative system handling capacity lower bound and number of antennas and transmitting The relativeness of power distribution, total energy consumption acquisition module 300 obtains the total energy consumption of asymmetric cooperative system, functional expression acquisition module The 400 energy efficiency function expressions obtaining asymmetric cooperative system, optimize module 500 and optimize the energy of asymmetric cooperative system Efficiency, it is thus achieved that it is number of antennas that number of antennas optimal solution and transmitting power optimal scheme solution, more new module 600 update number of antennas Optimal solution also updates transmitting power and is assigned as launching power optimal scheme solution, the asymmetric cooperative system of repeated optimization can dose-effect Rate, until optimal antenna number is all restrained with optimum transmitting power distribution.During whole, set up be applicable to TD-LTE electric power without The asymmetric cooperative system of the scene that cooperates in line private network, and the efficiency resource allocation algorithm of asymmetric cooperation transmission is proposed, solve Obtain maximizing the optimum cooperation antenna number of system energy efficiency and optimum transmitting power distribution, it is not necessary to take and too much remove journey band Wide, it is possible to significantly improve TD-LTE electric power private wireless network system efficiency.

Wherein in an embodiment, system is set up module 100 and is included:

Framework acquiring unit, for obtaining the network architecture of TD-LTE electric power wireless private network.

Definition unit.For defining cooperation transmission indexed variable in TD-LTE electric power wireless private network.

Recognition unit, for identifying the RRH and not participating in cooperation in the TD-LTE asymmetric cooperation transmission of electric power wireless private network Participate in the RRH of cooperation.

Record unit, for recording the RRH set participating in cooperation, and the transmitting power recording the RRH having neither part nor lot in cooperation divides Join.

Construction unit, is used for building asymmetric cooperative system.

As it is shown in figure 5, wherein in an embodiment, relativeness acquisition module 200 includes:

First computing unit 220, for according to asymmetric cooperative system and shannon formula, calculates asymmetric cooperative system Middle terminal data rate.

Second computing unit 240, for according to terminal data rate, calculates the total throughout of asymmetric cooperative system.

Relativeness acquiring unit 260, for using Jensen's inequality to calculate the total throughout of asymmetric cooperative system Mode carries out converting and carry out meansigma methods expectation process, obtains asymmetric cooperative system handling capacity lower bound by number of antennas and transmitting The function expression of power distribution.

As it is shown in figure 5, wherein in an embodiment, total energy consumption acquisition module 300 includes:

Initial parameter acquiring unit 320, for obtaining code encoding/decoding mode and the precoding side of TD-LTE electric power wireless private network Active terminals number in number of antennas and asymmetric cooperative system in formula, asymmetric cooperative system.

Base-Band Processing energy consumption calculation unit 340, for calculating the Base-Band Processing energy consumption of asymmetric cooperative system.

Energy consumption acquiring unit 360, be used for obtaining asymmetric cooperative system intermediate power amplifier energy consumption, radio frequency part energy consumption with And additional energy.

Total energy consumption computing unit 380, for calculating the total energy consumption of asymmetric cooperative system.

Above example only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but can not Therefore it is construed as limiting the scope of the patent.It should be pointed out that, for the person of ordinary skill of the art, On the premise of present inventive concept, it is also possible to make some deformation and improvement, these broadly fall into protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a TD-LTE electric power wireless private network efficiency resource allocation methods, it is characterised in that include step:

The network architecture according to TD-LTE electric power wireless private network and cooperation transmission indexed variable, set up asymmetric cooperative system；

According to described asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, it is thus achieved that asymmetric cooperation system System handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution；

Obtaining the total energy consumption of described asymmetric cooperative system, wherein, described total energy consumption includes Base-Band Processing energy consumption, power amplifier Energy consumption, radio frequency part energy consumption and additional energy；

The relativeness with number of antennas and launching power distribution according to described asymmetric cooperative system handling capacity lower bound and institute State the total energy consumption of asymmetric cooperative system, obtain the energy efficiency function expression of described asymmetric cooperative system；

According to the energy efficiency function expression of described asymmetric cooperative system, optimize the energy dose-effect of described asymmetric cooperative system Rate, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution；

Update number of antennas be number of antennas optimal solution and update transmitting power be assigned as described transmitting power optimal scheme solution, weight Optimize the energy efficiency of described asymmetric cooperative system again, until optimal antenna number is all restrained with optimum transmitting power distribution.

TD-LTE electric power wireless private network efficiency resource allocation methods the most according to claim 1, it is characterised in that described According to the network architecture and the cooperation transmission indexed variable of TD-LTE electric power wireless private network, set up the step bag of asymmetric cooperative system Include:

Obtain the network architecture of TD-LTE electric power wireless private network；

Define cooperation transmission indexed variable in described TD-LTE electric power wireless private network；

Identify the RRH participating in cooperation in the described TD-LTE asymmetric cooperation transmission of electric power wireless private network and the RRH having neither part nor lot in cooperation；

Record the described RRH set participating in cooperation, and described in record, have neither part nor lot in the transmitting power of the RRH of cooperation；

Build asymmetric cooperative system.

TD-LTE electric power wireless private network efficiency resource allocation methods the most according to claim 1, it is characterised in that described According to described asymmetric cooperative system, by the desired conversion of Jensen's inequality and meansigma methods, it is thus achieved that asymmetric cooperative system is handled up Amount lower bound includes with the step of number of antennas and the relativeness launching power distribution:

According to described asymmetric cooperative system and shannon formula, calculate terminal data rate in described asymmetric cooperative system；

According to described terminal data rate, calculate the total throughout of described asymmetric cooperative system；

Jensen's inequality is used the total throughout calculation of described asymmetric cooperative system to be converted and carries out meansigma methods Expect to process, obtain described asymmetric cooperative system handling capacity lower bound and by number of antennas and launch the function representation that power distributes Formula.

TD-LTE electric power wireless private network efficiency resource allocation methods the most according to claim 1, it is characterised in that described in obtain The step of the total energy consumption taking described asymmetric cooperative system includes:

Obtain code encoding/decoding mode and the antenna number in precoding mode, described asymmetric cooperative system of TD-LTE electric power wireless private network Active terminals number in mesh and described asymmetric cooperative system；

Calculate the Base-Band Processing energy consumption of described asymmetric cooperative system；

Obtain described asymmetric cooperative system intermediate power amplifier energy consumption, radio frequency part energy consumption and additional energy；

Calculate the total energy consumption of described asymmetric cooperative system.

TD-LTE electric power wireless private network efficiency resource allocation methods the most according to claim 1, it is characterised in that described According to the energy efficiency function expression of described asymmetric cooperative system, optimize the energy efficiency of described asymmetric cooperative system, obtain The step obtaining number of antennas optimal solution and transmitting power optimal scheme solution includes:

Obtain the energy efficiency function expression of described asymmetric cooperative system；

Define described transmitting power and be assigned as constant, simplify the energy efficiency function expression of described asymmetric cooperative system, ask Solve the function expression of number of antennas optimal solution；

Energy efficiency according to the described asymmetric cooperative system after described number of antennas optimal solution function expression and simplification Function expression, solves the function expression launching power optimal scheme solution.

TD-LTE electric power wireless private network efficiency resource allocation methods the most according to claim 1, it is characterised in that described in obtain Also include before the step of the total energy consumption taking described asymmetric cooperative system:

Based on meansigma methods expectation conversion and Vichy spy's Matrix Properties, it is thus achieved that power amplifier energy consumption and number of antennas and transmitting merit The relativeness of rate distribution.

7. a TD-LTE electric power wireless private network efficiency resource allocation system, it is characterised in that including:

System sets up module, for the network architecture according to TD-LTE electric power wireless private network and cooperation transmission indexed variable, sets up Asymmetric cooperative system；

Relativeness acquisition module, for according to described asymmetric cooperative system, desired by Jensen's inequality and meansigma methods Conversion, it is thus achieved that asymmetric cooperative system handling capacity lower bound and number of antennas and the relativeness of transmitting power distribution；

Total energy consumption acquisition module, for obtaining the total energy consumption of described asymmetric cooperative system, wherein, described total energy consumption includes base band Process energy consumption, power amplifier energy consumption, radio frequency part energy consumption and additional energy；

Functional expression acquisition module, for dividing with number of antennas and transmitting power according to described asymmetric cooperative system handling capacity lower bound The relativeness joined and the total energy consumption of described asymmetric cooperative system, obtain the energy efficiency letter of described asymmetric cooperative system Number expression formula；

Optimize module, for the energy efficiency function expression according to described asymmetric cooperative system, optimize described asymmetric association Make the energy efficiency of system, it is thus achieved that number of antennas optimal solution and transmitting power optimal scheme solution；

More new module, is used for updating number of antennas and is number of antennas optimal solution and updates transmitting power and be assigned as described transmitting power Optimal scheme solution, the energy efficiency of asymmetric cooperative system described in repeated optimization, until optimal antenna number launches merit with optimum Rate distribution all restrains.

TD-LTE electric power wireless private network efficiency resource allocation system the most according to claim 7, it is characterised in that described system Construction in a systematic way formwork erection block includes:

Framework acquiring unit, for obtaining the network architecture of TD-LTE electric power wireless private network；

Definition unit, is used for defining cooperation transmission indexed variable in described TD-LTE electric power wireless private network；

Recognition unit, for identifying the RRH and not participating in cooperation in the described TD-LTE asymmetric cooperation transmission of electric power wireless private network Participate in the RRH of cooperation；

Record unit, for recording the described RRH set participating in cooperation, and described in record, have neither part nor lot in the transmitting merit of the RRH of cooperation Rate is distributed；

Construction unit, is used for building asymmetric cooperative system.

TD-LTE electric power wireless private network efficiency resource allocation system the most according to claim 7, it is characterised in that described phase Relation acquisition module is included:

First computing unit, for according to described asymmetric cooperative system and shannon formula, calculates described asymmetric cooperation system Terminal data rate in system；

Second computing unit, for according to described terminal data rate, calculates the total throughout of described asymmetric cooperative system；

Relativeness acquiring unit, for using the Jensen's inequality total throughout calculation to described asymmetric cooperative system Carry out converting and carry out meansigma methods expectation process, obtain described asymmetric cooperative system handling capacity lower bound by number of antennas and transmitting The function expression of power distribution.

TD-LTE electric power wireless private network efficiency resource allocation system the most according to claim 7, it is characterised in that described Total energy consumption acquisition module includes:

Initial parameter acquiring unit, for obtaining the code encoding/decoding mode of TD-LTE electric power wireless private network and precoding mode, described Active terminals number in number of antennas and described asymmetric cooperative system in asymmetric cooperative system；

Base-Band Processing energy consumption calculation unit, for calculating the Base-Band Processing energy consumption of described asymmetric cooperative system；

Energy consumption acquiring unit, be used for obtaining described asymmetric cooperative system intermediate power amplifier energy consumption, radio frequency part energy consumption and Additional energy；

Total energy consumption computing unit, for calculating the total energy consumption of described asymmetric cooperative system.