CN106937300A - A kind of method that dynamic and intelligent adjusts Downtilt - Google Patents
A kind of method that dynamic and intelligent adjusts Downtilt Download PDFInfo
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- CN106937300A CN106937300A CN201511018644.4A CN201511018644A CN106937300A CN 106937300 A CN106937300 A CN 106937300A CN 201511018644 A CN201511018644 A CN 201511018644A CN 106937300 A CN106937300 A CN 106937300A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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Abstract
The present invention provides a kind of method that dynamic and intelligent adjusts Downtilt, comprises the following steps：S1, preparation：The own location information reported according to each user equipment u calculates the vertical angle between each described user equipment u and the antenna of base station m；S2, optimization：According to selected optimization aim, the optimal angle of declination of the antenna is calculated using corresponding method；S3, whether judge the angle of declination of the antenna for base station needs adjustment, if the described optimal angle of declination obtained by calculating is identical with current angle of declination, or beyond preset range, then without adjustment；Otherwise, Downtilt is adjusted.The method that the present invention optimizes systematic function by optimizing Downtilt, by using limited information, such as the Advance data quality Downtilt such as the position of user and Signal Interference and Noise Ratio；By the dynamic change of intra-cell users device distribution situation, Downtilt is in time adjusted so that the reception signal of user equipment and interference are optimized.
Description
Technical field
The present invention relates to wireless communication technology field, the method that more particularly to a kind of dynamic and intelligent adjusts Downtilt.
Background technology
The network environment of radio communication is sufficiently complex, influences the factor of inter-cell interference a lot.Antenna is important cellular communication system
Part, it is the type and angle of antenna, the transmission power of node, the type and size of cell, spatial loss, cloudy
Shadow decline etc., can all influence the performance of network.For many years, industrial quarters and academia are devoted to research suppression or eliminate minizone
Disturb to improve the technical solution of network performance.
Optimize overall performance of network by adjusting the angle of declination of antenna, be a kind of important approach.In real network environment,
Some related systematic parameters such as adjustment aerial angle can only be by virtue of experience gone when most, expected effect might not be but reached
Really, there is significant limitation.
The size of Downtilt, will influence the performance of cell in terms of two.It is mainly manifested in：
(1) as shown in figure 1, Fig. 1 is shown as the too small influence schematic diagram to user equipment signal of Downtilt.Small has a down dip
Angle makes antenna point to the outer peripheral areas of cell, can lift MPS process area, lifts the signal intensity of edge customer.But, it is small
Angle of declination can cause to strengthen the interference of adjacent cell.
(2) as shown in Fig. 2 Fig. 2 is shown as the excessive influence schematic diagram to user equipment signal of Downtilt.Big has a down dip
Angle makes the more sensing center of housing estate regions of antenna, and the signal intensity to improving Cell Center User is helpful, and it is right to reduce
The interference of adjacent cell；But, larger angle of declination can cause the signal weaker of Cell Edge User, or even covering cavity occur.
The factor of comprehensive these two aspects, Downtilt needs to obtain balance between marginal user performance and covering, under antenna
Inclination angle should be adjusted in appropriate scope.Real network environment and emulation show that generally, Downtilt exists
When between 10 °~15 °, the demand of these two aspects can be taken into account.The Downtilt that single cell determines according to the optimization aim of itself,
The problems such as being possible to super to go beyond the scope, the interference stronger to the generation of other cells, or cause weak covering.Therefore, it should
Consider the optimization aim of cell, and the factor of marginal user performance, MPS process in terms of these, finally determine cell
The Downtilt of determination.
Some documents propose using convex optimum theory and method to optimize Downtilt, by Downtilt and systematicness
The modeling of energy, and appropriate approximate processing is used, the functional relation between systematic function and Downtilt is obtained, and demonstrate
This functional relation is convex function.Then, using convex optimization method, it is proposed that the method for distribution adjustment Downtilt.Should
Method needs to use substantial amounts of information exchange, positional information including user, etc. the Downtilt information of each base station, realize compared with
Complexity, in the case where relevant information is insufficient, performance cannot ensure.
The method that also document is proposed optimizes network energy efficiency by adjusting Downtilt, and basic thought is to make use of Downtilt
The unimodal function characteristic between network energy efficiency, employs golden section search and finds the optimal Downtilt of efficiency.The document
The explanation that the function between Downtilt and network energy efficiency is convex function is not given, only this result has been drawn from emulation.
More there is existing document and optimal Downtilt is searched for using gradient descent algorithm, the spectrum efficiency of final optimization pass system.
The problem that the program is present is that gradient is difficult accurate estimation, when gradient error is larger, it is impossible to obtain good systematic function and carry
Rise.In addition, the method for the program is only applicable to spectrum efficiency for optimization aim, lack flexibility.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of distribution according to intra-cell users equipment
The method that situation dynamic and intelligent adjusts Downtilt, the angle of declination that the method passes through adjustment electrical tilt antenna, optimizes net significantly
Network performance.
In order to achieve the above objects and other related objects, the present invention provides a kind of method that dynamic and intelligent adjusts Downtilt, bag
Include：S1, preparation：The own location information reported according to each user equipment u calculates each described user equipment u and base station
Vertical angle between the antenna of m；S2, optimization：According to selected optimization aim, the antenna is calculated using corresponding method
Optimal angle of declination；S3, adjustment：Whether need adjustment, if the institute obtained by calculating if judging the Downtilt of the base station
State optimal angle of declination identical with current angle of declination, or beyond preset range, then without adjustment；Otherwise, Downtilt is adjusted.
In one embodiment of the present invention, the step S1 includes procedure below：S1-1：Determine to be transmitted in the m of base station
The set U of the user equipment u of datam, it is provided with Nm=| Um| individual user；S1-2：Each described user equipment u is measured and reported
Own location information gives the base station m；S1-3：The base station m is calculated every according to the positional information of the user equipment u
Vertical angle θ between the individual user equipment u and the antennam,u, the angle thetam,uComputing formula isWherein, hmIt is the height of the antenna；huIt is the height of the user equipment u；dm,uIt is described
Horizontal ranges of the user equipment u to the antenna.
In one embodiment of the present invention, each described user equipment u is assisted using the LPP of LTE in the process S1-2
Discuss to measure and report own location information, or positional information is measured by built-in satellite navigation system, and report institute
State base station m.
In one embodiment of the present invention, each described user equipment u direct measurement goes out angle theta in the process S1m,u,
And report the base station m.
In one embodiment of the present invention, the step S2 includes procedure below：S2-1：Determine optimization aim and corresponding ginseng
Number；S2-2：The Signal Interference and Noise Ratio SINR for determining each user equipment u is γu, calculate each described user equipment u
Corresponding weight parameter κu, the weight parameter κuComputing formula beS2-3：According to the difference of the optimization aim,
Calculate the optimal angle of declination of the antenna.
In one embodiment of the present invention, in the step S2-3, it is with cell average spectral efficiency where the base station m
Optimization aim, the optimal angle of declination computing formula of the antenna is：
In one embodiment of the present invention, in the step S2-3, imitated with cell weighted average frequency spectrum where the base station m
Rate is optimization aim, and the optimal angle of declination computing formula of the antenna is：
Wherein, αuIt is the weight coefficient of the handling capacity of the user equipment u.
In one embodiment of the present invention, according to the SINR situations of each user equipment u, adding for user equipment is determined
Weight coefficient αu；The weight coefficient α of SINR user equipmenies highuIt is small, the weight coefficient α of low SINR useruGreatly.
In one embodiment of the present invention, the weight coefficient α of each user equipment uuCan preset respectively, the base
The weight coefficient α of Cell Center User equipment where m of standinguIt is small, the weight coefficient α of Cell Edge User equipmentuGreatly.
In one embodiment of the present invention, in the step S2-3, cell average throughput is as excellent where with the base station m
Change target, the optimal angle of declination computing formula of the antenna is：
Wherein, wuIt is bandwidth that the user equipment u is used.
As described above, the method that dynamic and intelligent of the invention adjusts Downtilt, has the advantages that：
The method that the present invention optimizes systematic function by optimizing Downtilt, such as：The overall throughput of system, it is also possible to
It is spectrum efficiency of system etc., by using limited information, the Advance data quality such as including the position of user and Signal Interference and Noise Ratio
Downtilt；The dynamic change that the present invention passes through intra-cell users device distribution situation, in time adjusts Downtilt, makes
The reception signal and interference for obtaining user equipment are optimized.
Further, the characteristics of present invention is the unimodal function of Downtilt according to performance optimization object function, using the side of derivation
Method, obtains the optimal angle of declination of antenna in theory.
Further, the present invention go back influence of the combine antenna angle of declination to performance and coverage, with reference to obtain optimize angle of declination
Value, the final angle of declination for determining antenna.
Brief description of the drawings
Fig. 1 is shown as the too small influence schematic diagram to user equipment signal of Downtilt in background technology.
Fig. 2 is shown as the excessive influence schematic diagram to user equipment signal of Downtilt in background technology.
Fig. 3 is shown as the method for the dynamic and intelligent of the present invention adjustment Downtilt schematic flow sheet in an embodiment.
Fig. 4 is shown as the method for the dynamic and intelligent of the present invention adjustment Downtilt Downtilt schematic diagram in an embodiment.
Fig. 5 is shown as the method for the dynamic and intelligent of the present invention adjustment Downtilt Signal Interference and Noise Ratio SINR in an embodiment
With weight parameter κuBetween association schematic diagram.
Component label instructions
S1~S6 steps
Specific embodiment
Embodiments of the present invention are illustrated below by way of specific instantiation, those skilled in the art can be as disclosed by this specification
Content understand other advantages of the invention and effect easily.The present invention can also add by way of a different and different embodiment
To implement or apply, the various details in this specification can also be based on different viewpoints and application, without departing from essence of the invention
Various modifications or alterations are carried out under god.It should be noted that, in the case where not conflicting, the feature in following examples and embodiment
Can be mutually combined.
It should be noted that the diagram provided in following examples only illustrates basic conception of the invention in a schematic way, scheme then
Component count, shape and size when only display is with relevant component in the present invention rather than according to actual implementation in formula are drawn, in fact
The kenel of each component, quantity and ratio can be a kind of random change when border is implemented, and its assembly layout kenel be likely to it is more multiple
It is miscellaneous.
The invention provides a kind of method that Downtilt is adjusted according to the distribution situation dynamic and intelligent of intra-cell users equipment, should
For the adjustment of the Downtilt of base station in cell, optimize overall performance of network.Using heuritic approach, for each cell,
Solve the antenna optimization angle of declination of the base station of each cell.Influence of the Downtilt to optimization aim is considered in single subdistrict.
By using limited information, the Advance data quality Downtilt such as including the position of user equipment and Signal Interference and Noise Ratio；Pass through
The dynamic change of single intra-cell users device distribution situation, in time adjusts Downtilt；Increased in vertical dimension using smart antenna
Plus the free degree and hierarchical network data channel with control channel the characteristics of to signal covering, network performance is modeled and carries out
Model checking, the influence by way of being modeled to network performances such as interference, signal coverings to intelligent electrical tilt antenna to network performance
It is predicted, and the adjustment of antenna is carried out according to prediction.
Fig. 3 is referred to, the schematic flow sheet of dynamic adjustment electric melody aerial lower inclination angle is shown as, as illustrated, it includes following step
Suddenly：
S1, preparation：The own location information reported according to each user equipment u calculates each user equipment u and base station m's
Vertical angle between antenna；In the present embodiment, step S1 specifically includes procedure below：
S1-1：The set U of the user equipment u for determining to transmit data in the m of base stationm, it is provided with Nm=| Um| individual user；
If the set that system has M base station, M base station composition is designated as M, there are N number of user equipment (UE), UE in system
Set be designated as U.
To certain base station m ∈ M, its antenna has adjustable angle of declination θm, Downtilt adjusts in rational scope,
θmin≤θm≤θmax.The set U of the user for transmitting data in the m of base stationm, it is provided with Nm=| Um| individual user.
S1-2：Each user equipment u is measured and is reported own location information to give base station m；
Each user equipment u is measured using the LPP agreements of LTE and is reported own location information in process S1-2, or
Positional information is measured by built-in satellite navigation system (such as GPS, the Big Dipper), and reports base station m.
S1-3：Base station m calculates each user equipment u with straight line and water where antenna according to the positional information of user equipment u
The angle theta of horizontal linem,u, Fig. 4 is referred to, shown in figure is Downtilt schematic diagram.As illustrated, hmIt is base station m
Antenna height；huIt is the height of user equipment u；dm,uIt is horizontal ranges of the user equipment m to base station m；θmIt is base station m
Downtilt, i.e. angle between antenna main lobe direction and horizontal plane；θm,uIt is user equipment u and straight line and water where antenna
The angle of horizontal line.Can be calculated by trigonometric function：
In another embodiment, user equipment u direct measurements go out straight line where each user equipment u and antenna with it is horizontal
Angle thetam,u, and report base station m.
S2, optimization：According to selected optimization aim, the optimal angle of declination of antenna is calculated using corresponding method；In the present embodiment
In, it includes procedure below：
S2-1：Determine optimization aim and corresponding parameter；
S2-2：The Signal Interference and Noise Ratio SINR for determining each user equipment u is γu, calculate each user equipment u corresponding
Weight parameter kapa (abbreviation κu), weight parameter κuComputing formula be
S2-3：According to the difference of optimization aim, the optimal angle of declination of antenna is calculated.
In step S2-3, as optimization aim, the optimal angle of declination of antenna calculates public to cell average spectral efficiency where with base station m
Formula is：
In step S2-3, with base station m places cell weighted average spectrum efficiency as optimization aim, the optimal angle of declination meter of antenna
Calculating formula is：
Wherein, αuIt is the weight coefficient of the handling capacity of user equipment u.
In step S2-3, with base station m places cell average throughput as optimization aim, the optimal angle of declination computing formula of antenna
For：
Wherein, wuIt is bandwidth that user equipment u is used.
S3, adjustment：Judge whether the optimal angle of declination obtained by calculating is identical with current angle of declination, if it is, S4 is performed, such as
It is really no, perform step S5.
S4, does not adjust angle of declination.
S5, adjusts angle of declination.
S6, next circulation is entered after performing step S4 or S5, is waited after predetermined time period, goes to step S1；Or
Wait after predefined trigger event, go to step S1.
Process below for the different optimal angle of declinations for deriving antenna according to optimization aim is specifically described.
Downtilt θmWith the derivation of the relation of subscriber signal interference-to-noise ratio (SINR)：
Consider base station m, its Downtilt is θm.If there is N in cellmIndividual user equipment (UE), constitutes set Um.Investigate
User equipment under the m of base station, to certain u ∈ Um, signal is received from base station m, and disturbed by neighbor base station.Base station m
Adjacent cell constitute one set, be designated as Mm。
If the signal intensity that user equipment u is received from base station m is Sm,u(θm), have：
Sm,u(θm)=Gm,u(θm)ρm,uPm (1)
Wherein, Gm,u(θm) it is antenna gains of the base station m to user equipment u, ρm,uIt is between base station m and user equipment u
The path loss factor, PmIt is the transmission power of base station m.For the sake of simplicity, shadow fading and rapid fading are not considered.
Here, ρ0It is to fix the path loss factor, dm,uIt is the distance between base station m and user equipment u (km),
β is path loss coefficient.
Antenna gain Gm,u(θm) be made up of horizontal gain and vertical gain two parts, wherein horizontal gain sets with base station m and user
Horizontal sextant angle between standby u is relevant, and vertical angle is relevant between vertical gain and m and user equipment u.And the two angles take
Certainly in the position of base station m and user equipment u.
According to the definition of 3GPP, horizontal antenna gainWith vertical antenna gainCan be expressed as：
Vertical antenna gainIt is θmSquare exponential function, for simplicity, it is carried out approximately.
By (θm,u-θm)2With Taylor series in θ0Nearby launch to carry out approximately, can obtain θmLinear function：
(θm,u-θm)2≈(θm,u-θ0)2+2(θm,u-θ0)θm (5)
If during base station m adjustment Downtilt, adjacent base station Downtilt in the short time, it is known that and keep constant.Then, for
User u (u ∈ U in the m of base stationm), disturb IuFor：
By Sm,u(θm) and Iu, the Signal Interference and Noise Ratio (SINR) that can calculate user u is designated as γu(θm), have：
By Gm,u(θm) substitute into Sm,u(θm), obtain γu(θm) it is Downtilt θmFunction.
By analysis it can be found that after using linear approximation, when vertical dimensions antenna gain is processed, the SINR of user equipment u
That is γu(θm) it is θmConvex function.Convex function has unimodal characteristic, i.e., in region θmin≤θm≤θmaxIt is interior, have and only one
Individual maximum.
Define optimization aim：
By the SINR of user equipment, the handling capacity that can obtain user equipment u is：
ru(θm)=wulog(1+γu(θm)) (8)
Wherein, wuIt is bandwidth that user u is used.According to the property of convex function, the handling capacity r of user equipmentu(θm) it is also convex letter
Number.
Optimization aim is expressed as f (θ by optimization aim based on the handling capacity of unique user or other optimizing indexm)：
Optimization aim is the total throughout of cell：
Optimization aim is the average spectral efficiency (ase) of cell：
Optimization aim is the weighted average spectrum efficiency of cell：
Wherein, αuIt is the weight coefficient of the handling capacity of user equipment u.For example, to Cell Center User and edge customer using not
Same weight coefficient, can reach the effect of the handling capacity of centre of equilibrium user equipment and edge customer equipment.Specifically, it is side
Edge user equipment is used compares larger weight coefficient α than central useru, the handling capacity of edge customer equipment can be improved.
Optimization object function can also be other functions, as long as function f is ru(θm) convex function, then final f (θm) it is convex
Function.
Determine optimization aim, solve and cause the maximized Downtilt of optimization aim, that is, solve optimal value θm *So that f (θm *)
Value it is maximum：
Information is can be obtained using each base station, the suboptimization angle of declination of each antenna is solved.For unconstrained optimization problem,
Seek θmSo that f (θm) maximum is taken, due to f (θm) it is θmUnimodal function, then its maximum of points is the point that derivative is zero, i.e.,
f'(θmThe θ of)=0m。
3-3a：So that optimization aim is cell average spectral efficiency as an example
First, f'(θ are soughtm)
Wherein,It is assumed that κuBy θmInfluence it is smaller, its excursion is smaller, here
Think κuIt is constant.f'(θm) more positions by user u are influenceed, specifically, f'(θm) mainly it is subject to θm,u's
Influence.
Make f'(θm)=0, has：Solve
As can be seen that in the case where considering that single subdistrict average spectral efficiency (ase) is target, optimal angle of declination is all user's angles
θm,uWeighted average, wherein weight coefficient κuIt is relevant with each user SINR.
Fig. 5 is shown as SINR and κuBetween association, as illustrated, to SINR user high, κuClose to 1；To low SINR
User, κuIt is smaller.
As can be seen that when with average spectral efficiency (ase) as optimization aim, preferably Downtilt, more sensing SINR are higher
User, be mainly situated in the user equipment of center of housing estate position.
3-3b：So that optimization aim is weighted average spectrum efficiency as an example
First, f'(θ are soughtm)
Make f'(θm)=0, has：
Solve
In order to lift the spectrum efficiency of edge customer, this optimization aim can be that edge customer assigns larger weight coefficient, so,
Will eventually get Downtilt more in a balanced way.
As can be seen that in the case where considering that single subdistrict weighted average spectrum efficiency is target, optimal angle of declination is that institute is useful
Family angle thetam,uComposite weighted it is average, wherein weight coefficient κuIt is relevant with each user SINR, weight coefficient αuCan be pre- by system
First set, or dynamic is set.
3-3c：So that optimization aim is cell average throughput as an example
Now,
First, f'(θ are soughtm)
Make f'(θm)=0, has：Solve
Above formula shows that the Downtilt of optimization is more likely to wuκuThe larger user of value, mainly SINR is higher or/and band
Larger user wide.When the bandwidth that user is used is identical, only influenceed by SINR.
As can be seen that in the case where considering that single subdistrict user's average throughput is target, optimal angle of declination is all user's folders
Angle θm,uComposite weighted it is average, wherein weight coefficient κuIt is relevant with each user SINR, weight coefficient wuIt is bandwidth used by user.
In summary several situations can be seen that in the case where single subdistrict communication performance is considered, the optimal angle of declination of antenna can lead to
Cross the θ of all user equipmeniesm,uIt is calculated with SINR.
Wherein, the SINR of user equipment can survey estimation and obtain by base station.Customer position information is needed between user equipment and base station
By signaling or message transmission.Each user equipment u is needed to measure and own location information is reported into base station m.
In sum, the present invention optimizes systematic function by optimizing Downtilt, and systematic function includes that the totality of system is handled up
Amount, spectrum efficiency of system etc., day is optimized by using the position of limited information such as user and Signal Interference and Noise Ratio etc.
Line angle of declination, the dynamic change that the present invention passes through intra-cell users device distribution situation, in time adjusts Downtilt so that
The reception signal of user equipment and interference are optimized.So, the present invention effectively overcomes various shortcoming of the prior art and has
High industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any to be familiar with this skill
The personage of art all can carry out modifications and changes under without prejudice to spirit and scope of the invention to above-described embodiment.Therefore, such as
Those of ordinary skill in the art completed under without departing from disclosed spirit and technological thought all etc.
Effect modifications and changes, should be covered by claim of the invention.
Claims (10)
1. a kind of method that dynamic and intelligent adjusts Downtilt, it is characterised in that comprise the following steps：
S1, preparation：The own location information reported according to each user equipment u calculates each described user equipment u and base station
Straight line and horizontal angle where the antenna of m；
S2, optimization：According to selected optimization aim, the optimal angle of declination of the antenna is calculated using corresponding method；
S3, adjustment：Judge the antenna angle of declination whether need adjustment, if calculate obtained by described optimal angle of declination with
Current angle of declination is identical, or beyond preset range, then without adjustment；Otherwise, the angle of declination of the antenna is adjusted.
2. the method that dynamic and intelligent according to claim 1 adjusts Downtilt, it is characterised in that the step S1 includes
Procedure below：
S1-1：The set U of the user equipment u for determining to transmit data in the m of base stationm, it is provided with Nm=| Um| individual user；
S1-2：Each described user equipment u is measured and is reported own location information to the base station m；
S1-3：The base station m according to the positional information of the user equipment u, calculate each described user equipment u with it is described
The angle theta of vertical direction between the m of base stationm,u, the angle thetam,uComputing formula isWherein, hmIt is
The antenna height of the base station m；huIt is the height of the user equipment u；dm,uIt is the user equipment u to the base station m
Horizontal range.
3. the method that dynamic and intelligent according to claim 2 adjusts Downtilt, it is characterised in that：In the process S1-2
In each described user equipment u measured using the LPP agreements of LTE and report own location information, or defended by built-in
Star navigation system measures positional information, and reports the base station m.
4. the method that dynamic according to claim 2 adjusts Downtilt, it is characterised in that：In the process S1 each
The user equipment u direct measurements go out angle thetam,u, and report the base station m.
5. the method that dynamic and intelligent according to claim 2 adjusts Downtilt, it is characterised in that the step S2 includes
Procedure below：
S2-1：Determine optimization aim and corresponding parameter；
S2-2：The Signal Interference and Noise Ratio SINR for determining each user equipment u is γu, calculate each described user equipment u
Corresponding weight parameter κu, the weight parameter κuComputing formula be
S2-3：According to the difference of the optimization aim, the optimal angle of declination of the antenna is calculated.
6. the method that dynamic and intelligent according to claim 5 adjusts Downtilt, it is characterised in that in the step S2-3
In, as optimization aim, the optimal angle of declination computing formula of the antenna is cell average spectral efficiency where with the base station m：
7. the method that dynamic and intelligent according to claim 5 adjusts Downtilt, it is characterised in that in the step S2-3
In, with base station m places cell weighted average spectrum efficiency as optimization aim, the optimal angle of declination computing formula of the antenna
For：
Wherein, αuIt is the weight coefficient of the handling capacity of the user equipment u.
8. the method that dynamic and intelligent according to claim 7 adjusts Downtilt, it is characterised in that according to each user
The SINR situations of equipment u, determine the weight coefficient α of user equipmentu；The weight coefficient α of SINR user equipmenies highuIt is small, it is low
The weight coefficient α of SINR useruGreatly.
9. the method that dynamic and intelligent according to claim 7 adjusts Downtilt, it is characterised in that each described user equipment
The weight coefficient α of uuCan preset respectively, the weight coefficient α of Cell Center User equipment where the base station muIt is small, cell
The weight coefficient α of edge customer equipmentuGreatly.
10. the method that dynamic and intelligent according to claim 5 adjusts Downtilt, it is characterised in that：In the step S2-3
In, as optimization aim, the optimal angle of declination computing formula of the antenna is cell average throughput where with the base station m：
Wherein, wuIt is bandwidth that the user equipment u is used.
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| CN107681271A (en) * | 2017-08-26 | 2018-02-09 | 淮南律动电机制造有限公司 | Communication base station aerial signal vertical dip angle adjustment intelligent actuator |
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| CN112350756B (en) * | 2019-08-08 | 2021-12-07 | 中国移动通信集团广东有限公司 | Method and device for optimizing weight parameters of antenna and electronic equipment |
| CN112350756A (en) * | 2019-08-08 | 2021-02-09 | 中国移动通信集团广东有限公司 | Method and device for optimizing weight parameters of antenna and electronic equipment |
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| CN113556189A (en) * | 2021-06-24 | 2021-10-26 | 中国联合网络通信集团有限公司 | Antenna adjusting method and device for unmanned aerial vehicle |
| CN114173043A (en) * | 2021-12-11 | 2022-03-11 | 天翼电信终端有限公司 | Remote wide-coverage method for WiFi network of intelligent agricultural high-definition camera |
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