CN106211343A - A kind of maximization concurrent transmission power-economizing method based on heterogeneous network - Google Patents

Abstract

The present invention relates to a kind of maximization concurrent transmission power-economizing method based on heterogeneous network, belong to wireless communication technology field.The method utilizes current network conditions to configure in heterogeneous network scene, on the basis of meeting the basic Qos of user, transfer the slack resources in network to greatest extent, the transmission power consumption of heterogeneous communications network is reduced by the way of parallel transmission, promoting transmission efficiency, the method comprises the following steps: the sequence of network resource status, network to sequence carry out accessing judgement, determine and access the optimal transmission speed that parallel transmission network each distributes and the high-speed downstream transmission business datum asked by MUE branches to carry out parallel transmission in the access network of correspondence.

Description

A kind of maximization concurrent transmission power-economizing method based on heterogeneous network

Technical field

The invention belongs to wireless communication technology field, relate to a kind of maximization concurrent transmission energy-saving square based on heterogeneous network Method.

Background technology

In recent years, mobile radio communications system and the intelligence continuous evolution of multimode terminal and development, in the face of explosive increase Number of users and growing user's request, new business miscellaneous occurs in succession with the service of more hommization, mobile Wireless communication technology fast development.But, the network size of constantly expansion and the intelligent multimode terminal quantity of explosive increase Also bringing surprising huge energy consumption for mobile radio communication network, incident is the discharge of huge greenhouse gases, causes The pollution of environment.All and next problem so that the mobile radio communication network of development high energy efficiency sustainability seems all the more Urgent, the concept of green mobile wireless communication technology is arisen at the historic moment.

Usually, the efficiency problem of mobile radio communication network to be studied is it is necessary to from root on, go to analyze mobile nothing The overall composition of line communication network energy expenditure, probes into the main source of energy expenditure in communications network system.Currently mainly from Following four aspect promotes the efficiency of communication network: (1) optimizes network topology structure, i.e. optimizes space structure, promotes network The handling capacity of system；(2) energy expenditure of the infrastructure devices such as wireless access website power amplifier is optimized；(3) user's request is being met Under premise, optimize network spectrum utilization rate；(4) bandwidth and propagation delay time in optimization system.Based on this, different researchers propose from Link level, network level and three aspects of terminating stage carry out the research of efficiency optimization method.But, existing about efficiency optimize In research, most research is all the aspect resting on link level and network level, and in technological means innovation equipment cost fall Low today, in user's hands, terminal unit is the most universal, and the development that especially heterogeneous network is at full speed brings the fast of multimode terminal Speed is universal, and the high energy consumption problem of terminal the most greatly compromises Consumer's Experience, and the optimized for energy efficiency research of terminating stage also seems The most urgent.Consider under such a heterogeneous network scene, when existing equal about mechanism such as resource distribution or dynamic shutoffs After using, the MUE (multimode terminal) in network carries out high-speed transfer, and business demand still brings after cannot meeting or meeting Huge energy loss, then, existing strategy cannot make the high energy consumption problem of network be improved further.

Therefore, under heterogeneous network scene, how while carrying out high-speed transfer business, reduce network energy consumption further It it is urgent problem.

Summary of the invention

In view of this, it is an object of the invention to provide a kind of maximization concurrent transmission power-economizing method based on heterogeneous network, The method, on the basis of meeting the basic Qos of user, transfers the slack resources in network, to greatest extent by parallel transmission Mode reduces the transmission power consumption of heterogeneous communications network, promotes transmission efficiency.

For reaching above-mentioned purpose, the present invention provides following technical scheme:

A kind of maximization concurrent transmission power-economizing method based on heterogeneous network, to single MUE (multimode terminal) business transmitting scene Being analyzed, the method comprises the following steps:

S1: for wireless access RAT network RAT multiple in network scenarios₁, RAT₂And RAT₃, according to each network WithRatio size current network resources situation is ranked, labelling ranking sequence numberWithMake net In network, resource situation preferably network can be by priority access；Wherein, RAT is wireless access technology, RAT₁、RAT₂、RAT₃Respectively Represent different Radio Access Networks；g_iRepresent the i-th wireless access technology transmitting terminal channel gain to receiving device；N_0i Represent i-th wireless access technology noise power spectral density；

S2: carry out the R of high speed business transmission request according to MUE_reqT () is to ordering networkWithEnter Row accesses judgement；Wherein, R_reqT () is the required minimum transfer rate of MUE, be set as fixed value；

S3: ask for all optimal transmission speed determining that access parallel transmission network each distributes according to following formula

$\left\{\begin{array}{c}{\left(\begin{array}{cccccc}1& -1& 0& ...& 0& 0\\ 0& 1& -1& ...& 0& 0\\ 0& 0& 1& ...& -1& 0\\ ...& ...& ...& ...& ...& ...\\ 0& 0& 0& ...& 1& -1\end{array}\right)}_{(N-1)\×N}{\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ ...\\ \frac{\∂P_N\left(R\right)}{\∂R_N\left(t\right)}{|}_{R_N=R_N^{*}}\end{array}\right)}_{N\×1}=\left(\begin{array}{c}0\\ 0\\ 0\\ ...\\ 0\end{array}\right)\\ \underset{i=1}{\overset{N}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

Wherein,Represent optimum transfer rate (i=1,2,3 ... K), R_iT () (i=1,2,3 ... K) represents parallel and passes The transfer rate of defeated each access network distribution, P_iT () (i=1,2,3 ... K) represents each during each access network parallel transmission From energy loss；

S4: according to the transfer rate being assigned to respective access network tried to achieve in step S3, the high-speed downstream that MUE is asked Transmission business datum branches to carry out parallel transmission in corresponding access network, can realize the further optimization of efficiency.

Further, in step s 2, ifPass through RAT₁Individually carrying, with R_reqThe transmission speed of (t) Business is transmitted by rate, and ECMT strategy (maximizing concurrent transmission Energy Saving Strategy) performs to leave it at that；Wherein, B_iFor RAT_i's Channel width；

In step s 2, ifThen introduce RAT₂Carry out parallel transmission, calculate according to following formulaWith

$\left\{\begin{array}{c}\left(\begin{array}{cc}1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\end{array}\right)=0\\ \underset{i=1}{\overset{2}{\Σ}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

In step s 2, to calculatingWithCompare, ifThen byWithCommon carrying business transmission, transfer rate is respectivelyWithEnergy Saving Strategy performs to leave it at that；Otherwise, then draw Enter RAT₃Carry out parallel transmission, try to achieve according to following formula newWithWith

$\left\{\begin{array}{c}\left(\begin{array}{ccc}1& -1& 0\\ 0& 1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ \frac{\∂P_3\left(R\right)}{\∂R_3\left(t\right)}{|}_{R_3=R_3^{*}}\end{array}\right)=\left(\begin{array}{c}0\\ 0\end{array}\right)\\ \underset{i=1}{\overset{3}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

According to above-mentioned calculation procedure, successively to ranked each access network carry out access judgement, until pushing away The most now top n access network RAT_NIt is the overall network needing to access parallel transmission.

The beneficial effects of the present invention is: the present invention proposes a kind of maximization concurrent transmission energy-saving square based on heterogeneous network Method, utilizes current network conditions to configure in heterogeneous network scene, on the basis of meeting the basic Qos of user, to greatest extent Transfer the slack resources in network, by the way of parallel transmission, reduce the transmission power consumption of heterogeneous communications network, promote transmission energy Effect.

Accompanying drawing explanation

In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the present invention provides drawings described below to carry out Illustrate:

Fig. 1 is single MUE high-speed downstream business transmitting scene；

Fig. 2 is the MUE under heterogeneous network covers.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.

The present invention proposes a kind of maximization concurrent transmission power-economizing method based on heterogeneous network, specifically includes following steps: net The sequence of network resource situation, network to sequence carry out accessing judgement, determining and access the optimum that parallel transmission network each distributes Transfer rate and the high-speed downstream transmission business datum asked by MUE branch to pass parallel in corresponding access network Defeated.

In conjunction with accompanying drawing 1 and accompanying drawing 2 detailed description of the invention it is:

Step one: for wireless access RAT network RAT multiple in this network scenarios₁, RAT₂And RAT₃, according to each network 'sWithRatio size current network resources situation is ranked, labelling ranking sequence numberWithEnable resources in network situation preferably network by priority access.

Step 2: carry out the R of high speed business transmission request according to MUE_reqT () is to ordering networkWithCarry out accessing judgement.IfPass through RAT₁Individually carrying, with R_reqT the transfer rate of () is to business Being transmitted, ECMT strategy execution leaves it at that.Otherwise, then RAT is introduced₂Carry out parallel transmission, calculate according to following formulaWith

$\left\{\begin{array}{c}\left(\begin{array}{cc}1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\end{array}\right)=0\\ \underset{i=1}{\overset{2}{\Σ}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

To calculateWithCompare, ifThen byWithJointly Carrying business is transmitted, and transfer rate is respectivelyWithEnergy Saving Strategy performs to leave it at that.Otherwise, then RAT is introduced₃Carry out parallel Transmission, tries to achieve new according to following formulaWithWith

$\left\{\begin{array}{c}\left(\begin{array}{ccc}1& -1& 0\\ 0& 1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ \frac{\∂P_3\left(R\right)}{\∂R_3\left(t\right)}{|}_{R_3=R_3^{*}}\end{array}\right)=\left(\begin{array}{c}0\\ 0\end{array}\right)\\ \underset{i=1}{\overset{3}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

According to above-mentioned calculation procedure, successively to ranked each access network carry out access judgement, until pushing away The most now top n access network RAT_NIt is the overall network needing to access parallel transmission.

Step 3: ask for all optimal transmission speed determining that access parallel transmission network each distributes according to following formula

$\left\{\begin{array}{c}{\left(\begin{array}{cccccc}1& -1& 0& ...& 0& 0\\ 0& 1& -1& ...& 0& 0\\ 0& 0& 1& ...& -1& 0\\ ...& ...& ...& ...& ...& ...\\ 0& 0& 0& ...& 1& -1\end{array}\right)}_{(N-1)\×N}{\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ ...\\ \frac{\∂P_N\left(R\right)}{\∂R_N\left(t\right)}{|}_{R_N=R_N^{*}}\end{array}\right)}_{N\×1}=\left(\begin{array}{c}0\\ 0\\ 0\\ ...\\ 0\end{array}\right)\\ \underset{i=1}{\overset{N}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

Step 4: according to the transfer rate being assigned to respective access network tried to achieve in previous stepMUE is asked High-speed downstream transmission business datum branch to correspondence access network in carry out parallel transmission, the further of efficiency can be realized Optimize.

So far, under Multi net voting covers, single MUE carries out the further optimization problem of efficiency during high-speed downstream transmission business Have been resolved.

Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be In form and it is made various change, without departing from claims of the present invention limited range in details.

Claims (2)

1. a maximization concurrent transmission power-economizing method based on heterogeneous network, it is characterised in that: the method comprises the following steps:

S1: for wireless access RAT network RAT multiple in network scenarios₁, RAT₂And RAT₃, according to each network WithRatio size current network resources situation is ranked, labelling ranking sequence number RAT₁ ¹, RAT₂ ²And RAT₃ ³, make in network Resource situation preferably network can be by priority access；Wherein, RAT is wireless access technology, RAT₁、RAT₂、RAT₃Represent respectively Different Radio Access Networks；g_iRepresent the i-th wireless access technology transmitting terminal channel gain to receiving device；N_0iRepresent I-th wireless access technology noise power spectral density；

S2: carry out the R of high speed business transmission request according to MUE_reqT () is to ordering network RAT₁ ¹, RAT₂ ²And RAT₃ ³Carry out Access judgement；Wherein, R_reqT () is the required minimum transfer rate of MUE, be set as fixed value；

S3: ask for all optimal transmission speed determining that access parallel transmission network each distributes according to following formula

$\left\{\begin{array}{c}{\left(\begin{array}{cccccc}1& -1& 0& ...& 0& 0\\ 0& 1& -1& ...& 0& 0\\ 0& 0& 1& ...& -1& 0\\ ...& ...& ...& ...& ...& ...\\ 0& 0& 0& ...& 1& -1\end{array}\right)}_{\left(N-1\right)\×N}{\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ ...\\ \frac{\∂P_N\left(R\right)}{\∂R_N\left(t\right)}{|}_{R_N=R_N^{*}}\end{array}\right)}_{N\×1}=\left(\begin{array}{c}0\\ 0\\ 0\\ ...\\ 0\end{array}\right)\\ \underset{i=1}{\overset{N}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

Wherein,Represent optimum transfer rate (i=1,2,3 ... K), R_iT () (i=1,2,3 ... K) represents parallel transmission The transfer rate of each access network distribution, P_iT () (i=1,2,3 ... K) represents respective during each access network parallel transmission Energy loss；

S4: according to the transfer rate being assigned to respective access network tried to achieve in step S3, the high-speed downstream transmission that MUE is asked Business datum branches to carry out parallel transmission in corresponding access network, can realize the further optimization of efficiency.

A kind of maximization concurrent transmission power-economizing method based on heterogeneous network the most according to claim 1, it is characterised in that: In step S2, ifPass through RAT₁Individually carrying, with R_reqT business is transmitted by the transfer rate of (), ECMT strategy (maximizing concurrent transmission Energy Saving Strategy) performs to leave it at that；Wherein, B_iFor RAT_iChannel width；

In step s 2, ifThen introduce RAT₂Carry out parallel transmission, calculate according to following formulaWith

$\left\{\begin{array}{c}\left(\begin{array}{cc}1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\end{array}\right)=0\\ \underset{i=1}{\overset{2}{\Σ}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

In step s 2, to calculatingAnd B₂log₂ Compare, ifThen by RAT₁ ¹With RAT₂ ²Common carrying business transmission, transfer rate is respectivelyWithEnergy Saving Strategy performs to leave it at that；Otherwise, then RAT is introduced₃ Carry out parallel transmission, try to achieve according to following formula newWithWith

$\left\{\begin{array}{c}\left(\begin{array}{ccc}1& -1& 0\\ 0& 1& -1\end{array}\right)\left(\begin{array}{c}\frac{\∂P_1\left(R\right)}{\∂R_1\left(t\right)}{|}_{R_1=R_1^{*}}\\ \frac{\∂P_2\left(R\right)}{\∂R_2\left(t\right)}{|}_{R_2=R_2^{*}}\\ \frac{\∂P_3\left(R\right)}{\∂R_3\left(t\right)}{|}_{R_3=R_3^{*}}\end{array}\right)=\left(\begin{array}{c}0\\ 0\end{array}\right)\\ \underset{i=1}{\overset{3}{\mathrm{\Σ}}}{R}_i^{*}\left(t\right)=R_{req}\left(t\right)\end{array}\right.$

According to above-mentioned calculation procedure, successively to ranked each access network carry out access judgement, until pushing away The most now top n access network RAT_NIt is the overall network needing to access parallel transmission.