CN104519559B - The method and system of base station energy-saving - Google Patents

The method and system of base station energy-saving Download PDF

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Publication number
CN104519559B
CN104519559B CN201410748341.7A CN201410748341A CN104519559B CN 104519559 B CN104519559 B CN 104519559B CN 201410748341 A CN201410748341 A CN 201410748341A CN 104519559 B CN104519559 B CN 104519559B
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base station
combination
dormancy
cluster
cooperative
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CN104519559A (en
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李伟坚
吴赞红
汪莹
施展
梁文娟
杨嘉明
黄平
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Electric Power Dispatch Control Center of Guangdong Power Grid Co Ltd
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Electric Power Dispatch Control Center of Guangdong Power Grid Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

A kind of method and system of base station energy-saving, its method include：The maximal cover radius value of each base station in origin base station group is obtained, and determines the base station of base station of equal value each other, the base station of base station of equal value each other is divided into cluster, and determines the outer collection of base stations of collection of base stations cluster corresponding with its in the cluster per cluster；Independent assortment is carried out to the base station of collection of base stations in cluster, determines that cooperative base station combines dormancy base station combination corresponding with its；The Signal to Interference plus Noise Ratio of each dormancy base station combination is calculated according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster；Signal to Interference plus Noise Ratio is filtered out more than predetermined threshold value and the most dormancy base station combination of base station number, and cooperative base station combination corresponding to the dormancy base station combination filtered out is set to optimal cooperative base station and combined；Combined according to optimal cooperative base station and perform Combined Treatment, the base station corresponding to the combination of optimal cooperative base station in dormancy base station combination is subjected to dormancy.This programme both ensures to save guaranteed marginal user performance.

Description

The method and system of base station energy-saving
Technical field
The present invention relates to mobile communication technology field, more particularly to a kind of method and system of base station energy-saving.
Background technology
At present, energy scarcity and greenhouse effects are the main bugbears that face of the whole world, for this problem, green communications into For an important subject under discussion.Research show ICT consumed energies rise to 10% by 2% in the ratio shared by the whole world, and have into The trend that one step increases.In the energy of ICT industrial consumptions, 37% energy consumption is derived from the infrastructure of telecommunication and equipment, together When radio communication access network because its number of nodes it is numerous, and consume whole network close to 80% energy, and Radio Resource Have in the managing power consumption of the phenomenon that the presence of non-peak moment wastes, therefore the access website of the numerous wireless access networks of research important Meaning.
A kind of method of base station energy-saving is disclosed at present, and this method meets migration when carrier frequency or cell or base station or tracing area To energy saver mode condition when, the target energy saver mode of the carrier frequency or cell or base station or tracing area is determined, by the load Frequency or cell or base station or tracing area move to the target energy saver mode.Wherein, covered using lifting transmission power to expand Cover to compensate network.So as to according to real work situation, base station be carried out into energy-efficient treatment, disappeared so as to reduce the energy of base station Consumption.But it is simple by lifting transmission power come to expand covering to compensate the traditional approach of network be poorly efficient, not only to network Bring extra interference and it is necessary to frequently adjust network parameter.
The content of the invention
Based on this, it is necessary to for it is poorly efficient during energy-conservation the problem of, there is provided a kind of method and system of base station energy-saving.
A kind of method of base station energy-saving, including：
The maximal cover radius value of each base station in origin base station group is obtained, is determined each other according to the maximal cover radius value The base station of base station of equal value, the base station of base station of equal value each other is divided into cluster, and determines in the cluster per cluster collection of base stations and its The outer collection of base stations of corresponding cluster, wherein, it can mutually be replaced between the base station of the base station of equal value each other and meet mutual network clothes Business quality requirement；
Independent assortment is carried out to the base station of collection of base stations in the cluster, the base station combination of acquisition is set to cooperative base station group Close, and determine absolute complement of set corresponding to each cooperative base station combination respectively, it is corresponding that absolute complement of set is set into cooperative base station combination Dormancy base station combination；
The Signal to Interference plus Noise Ratio of each dormancy base station combination is calculated according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster；
Signal to Interference plus Noise Ratio is filtered out more than predetermined threshold value and the most dormancy base station combination of base station number, and will filtered out Cooperative base station combination corresponding to dormancy base station combination is set to optimal cooperative base station combination；
Combined Treatment is performed according to the optimal cooperative base station combination, by dormancy corresponding to the optimal cooperative base station combination Base station in base station combination carries out dormancy.
A kind of system of base station energy-saving, including：
Sub-clustering module, for obtaining the maximal cover radius value of each base station in origin base station group, according to the maximal cover Radius value determines the base station of base station of equal value each other, the base station of base station of equal value each other is divided into cluster, and determine the cluster per cluster The outer collection of base stations of interior collection of base stations cluster corresponding with its, wherein, can mutually it be replaced between the base station of the base station of equal value each other and full The mutual network service quality requirement of foot；
Base station combination determining module, for carrying out independent assortment to the base station of collection of base stations in the cluster, by the base of acquisition Combination of standing is set to cooperative base station combination, and absolute complement of set corresponding to determining the combination of each cooperative base station respectively, and absolute complement of set is set For dormancy base station combination corresponding to cooperative base station combination；
Signal to Interference plus Noise Ratio determining module, for calculating each stop according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster The Signal to Interference plus Noise Ratio of dormancy base station combination；
Optimal cooperative base station combination determining module, for filtering out Signal to Interference plus Noise Ratio more than predetermined threshold value and base station number most More dormancy base station combinations, and cooperative base station combination corresponding to the dormancy base station combination filtered out is set to optimal cooperative base station group Close；
Base station energy-saving module, for performing Combined Treatment according to the optimal cooperative base station combination, by the optimal cooperation Base station corresponding to base station combination in dormancy base station combination carries out dormancy.
The method and system of above-mentioned base station energy-saving, by the base that base station of equal value each other is determined according to maximal cover radius value Stand, sub-clustering is carried out to origin base station group, the base station of base station of equal value each other is divided into cluster, obtains base station set in the cluster of every cluster The outer collection of base stations of corresponding with its cluster is closed, realizes that network energy-saving is the distributed management pattern in units of cluster, it is mutual between cluster Independent, flow-based traffic monitoring, the control of base station energy-saving state and base station collaboration compensation are all only carried out in cluster, so as to solve base station section The problem of energy.Independent assortment is carried out to the base station of collection of base stations in cluster, the base station combination of acquisition is set to cooperative base station combination, will Its absolute complement of set is set to dormancy base station combination corresponding to cooperative base station combination；And the letter that calculates each dormancy base station combination is dry makes an uproar Than；Signal to Interference plus Noise Ratio is filtered out more than predetermined threshold value and the most dormancy base station combination of base station number, and the dormancy that will be filtered out Cooperative base station combination corresponding to base station combination is set to optimal cooperative base station combination；Combined and performed at joint according to optimal cooperative base station Reason, the base station corresponding to the combination of optimal cooperative base station in dormancy base station combination is subjected to dormancy.Cooperative base station is collaboratively to user Serviced, eliminate the interference of part adjacent area, and become useful signal, improve the performance of edge customer.Therefore combine Processing can expand base station range to substitute the compensation techniques such as traditional lifting transmission power, adjustment inclination angle.Network simultaneously Energy-conservation is the distributed management pattern in units of cluster, and network flexibility is good, and robustness is high, and complexity is low.So as to energy of the present invention The interference of part adjacent area is enough eliminated, is become useful signal to improve the performance of edge customer, and can enough realizes reduction network Energy consumption, and without frequently adjusting network parameter, solve the problems, such as poorly efficient.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the method for base station energy-saving of the present invention；
Fig. 2 is that origin base station group covers schematic diagram in concrete application example of the present invention；
Fig. 3 is that by sub-clustering radius of 1600m, the cluster of each cell base station is returned after progress sub-clustering in concrete application example of the present invention Belong to schematic diagram；
Fig. 4 is the structural representation of the system embodiment of base station energy-saving of the present invention.
Embodiment
The present invention is described in further detail with reference to embodiment and accompanying drawing, but embodiments of the present invention are not limited to This.
As shown in figure 1, the schematic flow sheet of the embodiment of the method for base station energy-saving of the present invention, including step：
Step S101：The maximal cover radius value of each base station in origin base station group is obtained, according to the maximal cover radius Value determines the base station of base station of equal value each other, the base station of base station of equal value each other is divided into cluster, and determine base in the cluster per cluster Stand and gather the outer collection of base stations of cluster corresponding with its, wherein, it can mutually be replaced between the base station of the base station of equal value each other and meet that This network service quality requirement；
The step is the step of carrying out sub-clustering to origin base station group.The maximal cover radius value of base station refers to the maximum of base station The radius value of overlay area.Maximal cover radius value can determine according to the maximal cover radius empirical value of the base station.Can It is substituted for each other and meets that the base station of mutual network service quality requirement is referred to as base station of equal value each other.Using maximal cover radius as about Beam condition, is divided to network, and meet constraint mutually is considered base station of equal value each other, also just naturally form cluster.
After carrying out sub-clustering to origin base station group, there are collection of base stations and its outer collection of base stations of corresponding cluster in cluster per cluster. Collection of base stations is the set of base station in the cluster in cluster, the outer collection of base stations of cluster be in origin base station group except in cluster collection of base stations with Outer base station.The outer collection of base stations of cluster subtracts collection of base stations in cluster equal to origin base station group.
Step S102：Independent assortment is carried out to the base station of collection of base stations in the cluster, the base station combination of acquisition is set to assist Make base station combination, and absolute complement of set corresponding to determining the combination of each cooperative base station respectively, absolute complement of set is set to the cooperative base station Dormancy base station combination corresponding to combination；
Collection of base stations has multiple base stations in cluster, and each base station can carry out independent assortment, can obtain multiple combinations.Each Combination (cooperative base station combination) has absolute complement of set (dormancy base station combination), i.e. cooperative base station for collection of base stations in the cluster It is collection of base stations in the cluster that combination is occured simultaneously for sky, union with dormancy base station combination.
Step S103：Each dormancy base station combination is calculated according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster Signal to Interference plus Noise Ratio；
It can be combined to according to cooperative base station in collection of base stations in cluster outside the radiant power and cluster of terminal in collection of base stations The letter that base station calculates dormancy base station combination corresponding to cooperative base station combination to the radiant power of end dries ratio.
Step S104：Signal to Interference plus Noise Ratio is filtered out more than predetermined threshold value and the most dormancy base station combination of base station number, and Cooperative base station combination corresponding to the dormancy base station combination filtered out is set to optimal cooperative base station combination；
It is determined that during optimal cooperative base station combination, the dormancy that signal to noise ratio is more than predetermined threshold value can be first filtered out Base station combination, then the most dormancy base station combination of base station number is filtered out from these combinations, the dormancy base station combination is corresponding Cooperative base station combination be set to the combination of optimal cooperative base station.Wherein, predetermined threshold value is set according to demand.
Step S105：Combined Treatment is performed according to the optimal cooperative base station combination, the optimal cooperative base station is combined Base station in corresponding dormancy base station combination carries out dormancy.
Coordinated multipoint transmission (Coordinated Multiple Points Transmission/Reception, CoMP) Have it is a variety of realize technology, mainly including Combined Treatment (Joint Processing, JP) technology and cooperative scheduling (Cooperative Scheduling, CS) technology.The present invention includes joint processing technology in power-saving mechanism, according to its technology Feature is to base station sub-clustering, and junction link budget, selects cooperative base station (compensation base station) and dormancy base station, while network energy-saving is Distributed management pattern in units of cluster, between cluster independently of each other, business amount monitor, the control of base station energy-saving state and base station Cooperation compensation is all only carried out in cluster, is that network flexibility is good using such distributed advantage, and robustness is high, and complexity is low. The present embodiment can eliminate the interference of part adjacent area, be become useful signal to improve the performance of edge customer, and can is enough real Network energy consumption is now reduced, and without frequently adjusting network parameter, is solved the problems, such as poorly efficient.
In one of the embodiments, a kind of method for the Signal to Interference plus Noise Ratio for calculating dormancy base station combination is also specifically disclosed, i.e., The Signal to Interference plus Noise Ratio of dormancy base station combination is calculated using below equation：
Wherein, QlL-th of cooperative base station combination is represented,Represent QlCorresponding dormancy base station combination, base station set in the cluster L cooperative base station combination, SINR are amounted toarea(l) Signal to Interference plus Noise Ratio of l-th of dormancy base station combination is represented,Represent Terminal location (x, y) belongs to dormancy base station combinationCovering position in the range of,Represent cooperative base station group in cluster Close QlIn i-th of base station to the radiant power at (x, y) place, Pk(x, y) represents k-th of base station to (x, y) place in the outer collection of base stations of cluster Radiant power, n represent cooperative base station combination QlMiddle base station number, K represent base station number in the outer collection of base stations of cluster, N0Represent high This white noise spectrum power.
In one of the embodiments, invention additionally discloses a kind of method for determining optimal cooperative base station combination, that is, use Below equation determines optimal cooperative base station combination：
And
Wherein, L* represents optimal cooperative base station combination, SINReltRepresent predetermined threshold value.
In one of the embodiments, Signal to Interference plus Noise Ratio is more than predetermined threshold value and the most dormancy base station combination of base station number It there may be multiple, therefore also further screened, to obtain one group of optimal combination.I.e.：
When the dormancy base station combination filtered out is multiple combinations, from the dormancy base station combination filtered out filtering out letter does Make an uproar than the dormancy base station combination of maximum, and its corresponding cooperative base station combination is set to optimal cooperative base station and combined.
In one of the embodiments, the method for base station energy-saving of the present invention can be applied to lte-a system.
CoMP is realized that the joint processing technology of one of technology brings base station energy-saving mechanism into by the mechanism, small to realize Area's dormancy and the purpose of network building out.Further it is proposed that the preference pattern of an optimal cooperative base station combination, with this in cluster The interior optimal cooperative base station combination of selection, so as to realize the optimization of energy-conservation and performance.Therefore the present invention, which can be applied effectively, is saving In energy mechanism, network deficiency covering, and then kind marginal user performance can be compensated under the premise of base station transmitting power is not lifted.
Various technical characteristics in embodiment of above can be arbitrarily combined, as long as the combination between feature is not present Conflict or contradiction, but as space is limited, do not described one by one, therefore the various technical characteristics in above-mentioned embodiment is any It is combined the scope for falling within this disclosure.
Specifically, when realizing the JP technologies of one of technology using CoMP, the signal for participating in the cell transmission of cooperation all has With signal, total interference level that terminal is subject to is reduced, and the cell signal for participating in cooperation is overlapped mutually, and is improved terminal and is received Signal power, so as to improve the SINR of downlink (Signal to Interference plus Noise Ratio).
Wherein, SINR represents Signal to Interference plus Noise Ratio, N0It is white noise.From above formula, useful signal is by two-way from CoMP's Cell superposition compositionInterference signal then reduces to 3 tunnels by 4 original tunnelsSo as to which SINR is strengthened, therefore JP Technology being capable of extended base station range.
The present invention is covered as optimization principles to compensate caused network deficiency after base station dormancy, the selection execution JP bases in cluster Stand and depend on two optimization aims：Dormant cell receives useful signal intensity highest in cluster；Dormant cell is by dry outside cluster in cluster Disturb intensity minimum.
Because two targets are all related to customer location, and cause the optimal solution of two targets inconsistent, it is therefore desirable to solve Certainly base station selected optimization problem.As drag can truly reflect intensity and the area of dormancy region useful signal and interference signal Domain Signal to Interference plus Noise Ratio, it is the effective foundation for selecting cooperative base station best of breed, and is determined using the selection of simple greedy algorithm Its operability.
Definition region signal intensity function first, the total radiant power that continuous sheet of region z (x, y) receives have：
F (x, y)=∫ ∫(x,y)∈zP(x,y)dxdy
Region Signal to Interference plus Noise Ratio SINRarea：
Wherein PUs(x, y) is the available signal power at (x, y) place, PIn(x, y) is interfering signal power, SINRareaIt is one The individual parameter for directly reflecting overall region network performance.
Secondly define：Collection of base stations (or being set of cells in cluster) in any clusterSg ∈ S, the outer collection of base stations of cluster (the outer set of cells of cluster)And haveAnd according to Sg Define a new set：
Wherein cooperative base station combination QlIt is collection of base stations S in clustergIn any different base station combination, a total of L is combined, And make a new set c.It is QlIn i-th of element, diRepresent it in SgIn sequence number.Cooperative base station combines QlAn absolute complement of set is corresponding with, absolute complement of set is set to the dormancy base station combination of cooperative base station combination, then corresponds to QlDormancy Base station combination forms a set：
To any one dormancy base station combinationHave：
Wherein Pk(x, y) is the outer collection of base stations of clusterTo the radiant power at (x, y) place,Represent to cooperate in cluster Base station combinationTo the radiant power at (x, y) place,Represent the position (x, y) of terminal in dormancy base station combination's In position range.When O closure sections for known to, SINRarea(l) only change with l.
Finally propose the model for selecting optimal cooperative base station to combine：
SINReltIt is selection thresholding.The element l of L* set had not only made Signal to Interference plus Noise Ratio be more than thresholding but also had made what cooperative base station combined Base station number is minimum.
Further, when the dormancy base station combination filtered out is multiple combinations, below equation can also be used to determine most Good cooperative base station combination：
l*Represent that selection makes the maximum cooperative base station combination of Signal to Interference plus Noise Ratio, corresponding energy-conservation meaning in the set L* filtered out Justice is that dormancy base station is as more as possible and SINR will meet qos requirement.
This programme devises the cluster algorithm in combination CoMP regions using the compensation network coverage of CoMP technologies；According to area Domain Signal to Interference plus Noise Ratio establishes the theoretical model of the optimal cooperative base station combination of selection in cluster, and using greedy algorithm selection best base station group Close, with dormancy base station as much as possible.Dormant cell in cluster is received into useful signal intensity highest and by interference strength outside cluster Minimum is used as optimization aim, for solving the problems, such as that optimal solution is inconsistent.
The application combination example illustrates.
Because the traffic densities in each region and service quality have differences in real network, therefore the present invention uses one Close to the isomorphism of real network, irregular LTE-A Cellular Networks scenes.As shown in Fig. 2 it is area in concrete application example of the present invention Domain base station group covering schematic diagram, simulates a urban area, 55 base stations cover 5000m*5000m area, each cell Covering radius is between 300m to 700m.Each base station is single antenna, omnidirectional in network, in center of housing estate, launches work( Rate 20W, 35 meters, working frequency 2.6GHz, antenna gain 17dB, feeder loss 3dB of tower height, the penetration loss of Radio Link 20dB, shade weak 7dB, interference margins 0.5dB, white noise -114dBm, receiver sensitivity -114dBm, link budget use Cost-Hata improved models, base station are able to carry out JP technologies, SINR each otherelt=-4.48dB, SINRcmp=3dB.
The SINR distribution maps that schematic diagram draws whole scene can be covered according to origin base station group.Although all Base Transmitters Power is the same, but because of factors such as qos requirement (mainly SINR) and traffic densities, causes the significance difference of each coverage radius of cell It is different.In SINR distribution maps, the region SINR closer to base station is higher, on the contrary then worse, and most dull line-like area Cell boarder, on the whole each cell is centered on base station, with circular outwards diverging covering.
In the case of different sub-clustering radiuses, the base station number that dormancy is at most capable of in above-mentioned scene is different.Dormancy base station number Amount increases according to the increase of sub-clustering radius, but the stepping of the amplification of dormancy base station number and sub-clustering radius is in nonlinear change, 1300m and 1600m sub-clustering radiuses are flex points.In the range of 1300~1600 influence of the sub-clustering radius to dormancy base station number compared with Greatly, every 100 meters of steppings increase by 3~4 dormancy base stations, approximately linear change, and are tended towards stability at both ends, and every 100 meters of steppings increase Add 1~2 dormancy base station.Further analysis shows that when sub-clustering radius is less than 1300m, only a small number of base station clusters and each 2~3 less than normal of cluster scale so that can finally select the base station number of dormancy less；It is remaining when sub-clustering radius is more than 1600m Stand-alone base station there was only 5, wherein 4 radius of societies are larger, another is then difficult to sub-clustering because of position, causes sub-clustering radius every Influence of 100 steppings to dormancy base station number eases up.
After emulating and analyzing the energy-saving efficiency of different sub-clustering radiuses, by taking 1600m sub-clusterings as an example, before illustrating this scene energy-conservation Change afterwards.Fig. 3 is that by sub-clustering radius of 1600m, the cluster of each cell base station is returned after progress sub-clustering in concrete application example of the present invention Belong to schematic diagram, the scale (number of cells) of cluster depends on the size of cell in cluster.
The energy-conservation and performance of network during 1 different radii sub-clustering of table
Covering radius 1800 1700 1600 1500 1400 1300 1200
(m)
DGR 6.06% 5.51% 4.57% 2.66% 2.62% 2.08% 1.87%
DCR 41.8% 40.0% 36.4% 29.1% 21.8% 16.4% 14.5%
Table 1 when being each sub-clustering radius corresponding network deterioration rate and dormancy base station number accounting, both tendencies be one Cause.Wherein in the case where meeting the requirement of the network coverage 95%, during 1600 meters of radius sub-clusterings, deterioration rate 4.57%, reach energy-conservation Maximize 36.4%.
Based on the method for above-mentioned base station energy-saving, this programme also provides a kind of system of base station energy-saving, as shown in figure 4, being this The structural representation of the system embodiment of invention base station energy-saving, including：
Sub-clustering module 410, for obtaining the maximal cover radius value of each base station in origin base station group, covered according to the maximum Lid radius value determines the base station of base station of equal value each other, the base station of base station of equal value each other is divided into cluster, and determine per cluster The outer collection of base stations of collection of base stations cluster corresponding with its in cluster, wherein, can mutually be replaced between the base station of the base station of equal value each other and Meet mutual network service quality requirement；
Base station combination determining module 420, for carrying out independent assortment to the base station of collection of base stations in the cluster, by acquisition Base station combination is set to cooperative base station combination, and determines absolute complement of set corresponding to each cooperative base station combination respectively, by absolute complement of set It is set to dormancy base station combination corresponding to cooperative base station combination；
Signal to Interference plus Noise Ratio determining module 430, it is each for being calculated according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster The Signal to Interference plus Noise Ratio of individual dormancy base station combination；
Optimal cooperative base station combination determining module 440, is more than predetermined threshold value and base station number for filtering out Signal to Interference plus Noise Ratio Most dormancy base station combinations is measured, and cooperative base station combination corresponding to the dormancy base station combination filtered out is set to the base that most preferably cooperates Stand combination；
Base station energy-saving module 450, for performing Combined Treatment according to the optimal cooperative base station combination, by the optimal association Make the base station corresponding to base station combination in dormancy base station combination and carry out dormancy.
In one of the embodiments, Signal to Interference plus Noise Ratio determining module is done using the letter of below equation calculating dormancy base station combination Make an uproar ratio：
Wherein, QlL-th of cooperative base station combination is represented,Represent QlCorresponding dormancy base station combination, collection of base stations in the cluster Shared L cooperative base station combination, SINRarea(l) Signal to Interference plus Noise Ratio of l-th of dormancy base station combination is represented,Represent eventually End position (x, y) belongs to dormancy base station combinationCovering position in the range of,Represent cooperative base station combination Q in clusterl In i-th of base station to the radiant power at (x, y) place, Pk(x, y) represents k-th of base station to (x, y) place in the outer collection of base stations of cluster Radiant power, n represent cooperative base station combination QlMiddle base station number, K represent base station number in the outer collection of base stations of cluster, N0Represent Gauss White noise spectrum power.
In one of the embodiments, optimal cooperative base station combination determining module determines optimal cooperation base using below equation Stand combination：
And
Wherein, L* represents optimal cooperative base station combination, SINReltRepresent predetermined threshold value.
In one of the embodiments, the optimal cooperative base station combination determining module is additionally operable to：
When the dormancy base station combination filtered out is multiple combinations, from the dormancy base station combination filtered out filtering out letter does Make an uproar than the dormancy base station combination of maximum, and its corresponding cooperative base station combination is set to optimal cooperative base station and combined.
The system of the base station energy-saving of the present invention and the method for the base station energy-saving of the present invention are one-to-one, above-mentioned base station sections Correlation technique feature and its technique effect in the embodiment of the method for energy is suitable for the system embodiment of base station energy-saving, herein Repeat no more.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (7)

  1. A kind of 1. method of base station energy-saving, it is characterised in that including：
    The maximal cover radius value of each base station in origin base station group is obtained, is determined according to the maximal cover radius value of equal value each other The base station of base station, the base station of base station of equal value each other is divided into cluster, and determines that collection of base stations is corresponding with it in the cluster per cluster The outer collection of base stations of cluster, wherein, can mutually be replaced between the base station of the base station of equal value each other and meet mutual network service matter Amount requires；
    Independent assortment is carried out to the base station of collection of base stations in the cluster, the base station combination of acquisition is set to cooperative base station combination, and Absolute complement of set corresponding to each cooperative base station combination is determined respectively, and absolute complement of set is set to dormancy corresponding to cooperative base station combination Base station combination；
    The Signal to Interference plus Noise Ratio of each dormancy base station combination is calculated according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster；Its In, the Signal to Interference plus Noise Ratio based on the below equation calculating dormancy base station combination：
    Wherein, QlL-th of cooperative base station combination is represented,Represent QlCorresponding dormancy base station combination, collection of base stations shares in the cluster L cooperative base station combination, SINRarea(l) Signal to Interference plus Noise Ratio of l-th of dormancy base station combination is represented,Represent terminal position Put (x, y) and belong to dormancy base station combinationCovering position in the range of,Represent cooperative base station combination Q in clusterlIn I base station is to the radiant power at (x, y) place, Pk(x, y) represents radiation of k-th of base station to (x, y) place in collection of base stations outside cluster Power, n represent cooperative base station combination QlMiddle base station number, K represent base station number in the outer collection of base stations of cluster, N0Represent Gauss white noise Audio frequency spectral power；
    Signal to Interference plus Noise Ratio is filtered out more than predetermined threshold value and the most dormancy base station combination of base station number, and the dormancy that will be filtered out Cooperative base station combination corresponding to base station combination is set to optimal cooperative base station combination；
    Combined Treatment is performed according to the optimal cooperative base station combination, by dormancy base station corresponding to the optimal cooperative base station combination Base station in combination carries out dormancy.
  2. 2. the method for base station energy-saving according to claim 1, it is characterised in that optimal cooperation base is determined using below equation Stand combination：
    And
    Wherein, L* represents optimal cooperative base station combination, SINReltRepresent predetermined threshold value.
  3. 3. the method for base station energy-saving according to claim 1 or 2, it is characterised in that also include：
    When the dormancy base station combination filtered out is multiple combinations, Signal to Interference plus Noise Ratio is filtered out from the dormancy base station combination filtered out Maximum dormancy base station combination, and its corresponding cooperative base station combination is set to optimal cooperative base station and combined.
  4. 4. the method for base station energy-saving according to claim 1 or 2, it is characterised in that should by the method for the base station energy-saving For lte-a system.
  5. A kind of 5. system of base station energy-saving, it is characterised in that including：
    Sub-clustering module, for obtaining the maximal cover radius value of each base station in origin base station group, according to the maximal cover radius Value determines the base station of base station of equal value each other, the base station of base station of equal value each other is divided into cluster, and determine base in the cluster per cluster Stand and gather the outer collection of base stations of cluster corresponding with its, wherein, it can mutually be replaced between the base station of the base station of equal value each other and meet that This network service quality requirement；
    Base station combination determining module, for carrying out independent assortment to the base station of collection of base stations in the cluster, by the group of base stations of acquisition Conjunction is set to cooperative base station combination, and absolute complement of set corresponding to determining the combination of each cooperative base station respectively, and absolute complement of set is set into this Dormancy base station combination corresponding to cooperative base station combination；
    Signal to Interference plus Noise Ratio determining module, for calculating each dormancy base according to collection of base stations outside the cluster corresponding with its of collection of base stations in cluster Stand combination Signal to Interference plus Noise Ratio；Wherein, the Signal to Interference plus Noise Ratio determining module calculates the dormancy base station combination based on below equation Signal to Interference plus Noise Ratio：
    Wherein, QlL-th of cooperative base station combination is represented,Represent QlCorresponding dormancy base station combination, collection of base stations shares in the cluster L cooperative base station combination, SINRarea(l) Signal to Interference plus Noise Ratio of l-th of dormancy base station combination is represented,Represent terminal position Put (x, y) and belong to dormancy base station combinationCovering position in the range of,Represent cooperative base station combination Q in clusterlIn I base station is to the radiant power at (x, y) place, Pk(x, y) represents radiation of k-th of base station to (x, y) place in collection of base stations outside cluster Power, n represent cooperative base station combination QlMiddle base station number, K represent base station number in the outer collection of base stations of cluster, N0Represent Gauss white noise Audio frequency spectral power；
    Optimal cooperative base station combination determining module, for filter out Signal to Interference plus Noise Ratio more than predetermined threshold value and base station number it is most Dormancy base station combination, and cooperative base station combination corresponding to the dormancy base station combination filtered out is set to optimal cooperative base station and combined；
    Base station energy-saving module, for performing Combined Treatment according to the optimal cooperative base station combination, by the optimal cooperative base station Base station corresponding to combination in dormancy base station combination carries out dormancy.
  6. 6. the system of base station energy-saving according to claim 5, it is characterised in that optimal cooperative base station combination determining module is adopted Determine that optimal cooperative base station combines with below equation：
    And
    Wherein, L* represents optimal cooperative base station combination, SINReltRepresent predetermined threshold value.
  7. 7. the system of the base station energy-saving according to any one of claim 5 or 6, it is characterised in that the optimal cooperation base Combination determining module of standing is additionally operable to：
    When the dormancy base station combination filtered out is multiple combinations, Signal to Interference plus Noise Ratio is filtered out from the dormancy base station combination filtered out Maximum dormancy base station combination, and its corresponding cooperative base station combination is set to optimal cooperative base station and combined.
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