CN106851665A - The downdip adjusting method of antenna and base station - Google Patents
The downdip adjusting method of antenna and base station Download PDFInfo
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- CN106851665A CN106851665A CN201510897416.2A CN201510897416A CN106851665A CN 106851665 A CN106851665 A CN 106851665A CN 201510897416 A CN201510897416 A CN 201510897416A CN 106851665 A CN106851665 A CN 106851665A
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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
- H04W16/18—Network planning tools
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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
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the present invention provides downdip adjusting method and the base station of a kind of antenna.The downdip adjusting method of inventive antenna, including：Base station obtains optimization object function, and the optimization object function is the convex function of the angle of declination on antenna；The base station determines the angle between the interference signal intensity of each user equipment and each user equipment and the base station；The base station is in the default adjustment of angle of declination is interval according to the interference signal intensity and the angle between each user equipment and the base station of each user equipment, the optimal angle of declination of the optimization object function is obtained using iterative splitting algorithm, optimal angle of declination is the corresponding angle of declination of optimal value of optimization object function；The angle of declination of antenna is adjusted to the optimal angle of declination by the base station.The present invention can realize optimizing and revising for the angle of declination of the antenna of base station, improve the angle of declination regulated efficiency of antenna.
Description
Technical field
The present embodiments relate to the communication technology, more particularly to a kind of antenna downdip adjusting method and base
Stand.
Background technology
With the fast development of mobile communication technology, the antenna pair network performance of base station or even Consumer's Experience
Influence is increasing.How suitable day is selected when cordless communication network (such as TD-LTE) is disposed
Line, to ensure optimum network performance, and then ensures Consumer's Experience, is wireless communication network growing interest
Problem.Wherein, the angle of declination of the antenna of base station is a key factor of coverage radius of cell, antenna
The setting of angle of declination is unreasonable to be caused the weak covering of cell, overlap the problems such as covering, and then to network performance
Impact.
It is this by the way of manual intervention adjustment when Downtilt generally to base station is adjusted
The angle of declination regulated efficiency that mode carries out antenna is relatively low.
The content of the invention
The embodiment of the present invention provides downdip adjusting method and the base station of a kind of antenna, to be lifted under antenna
Inclination maneuver efficiency.
In a first aspect, the embodiment of the present invention provides a kind of downdip adjusting method of antenna, including：
Base station obtains optimization object function, and the optimization object function includes the letter of the handling capacity of the base station
The function of the average spectral efficiency (ase) of several, described base station, the function of the weighting handling capacity of the base station and described
Any one in the function of the weighted average spectrum efficiency of base station, the optimization object function is on antenna
Angle of declination convex function；
The base station is determined between the interference signal intensity of each user equipment and each user equipment and the base station
Angle；
The base station is strong according to the interference signal of each user equipment in the default adjustment of angle of declination is interval
Degree and the angle between each user equipment and the base station, obtain described excellent using iterative splitting algorithm
Change the optimal angle of declination of object function, the optimal angle of declination is the optimal value pair of the optimization object function
The angle of declination answered；
The angle of declination of antenna is adjusted to the optimal angle of declination by the base station.
With reference in a first aspect, in the first mode in the cards of first aspect, the base station determines
Angle between each user equipment and the base station, including：
The base station sends position measurement and indicates message to each user equipment, and institute's position measurement indicates message
For indicating the user equipment to carry out position measurement, and the position of the user equipment is sent to the base station
Confidence ceases；
The base station receives the positional information that each user equipment sends；
The positional information of base station positional information respectively according to each user equipment and the base station determines institute
State the angle between user equipment and the base station.
With reference to the first possible implementation of first aspect, in second possible reality of first aspect
In existing mode, the positional information of the user equipment include the user equipment to the base station level away from
From the height with the user equipment, the positional information of the base station includes the antenna height of the base station；
The positional information of base station positional information respectively according to each user equipment and the base station determines institute
The angle between user equipment and the base station is stated, including：
Base station horizontal range respectively according to each user equipment to the base station, the user equipment
Height and the antenna height of the base station, determine the user equipment with the base station using antitrigonometric function
Between angle；
Wherein, the antitrigonometric function includes arctan function and arc cotangent function.
With reference to the first possible implementation or second possible reality of first aspect of first aspect
Existing mode, in the third possible implementation of first aspect, institute's position measurement indicates message also
Including in measure the cycle information and sending method information at least one.
With reference to any of the above-described kind of possible implementation of first aspect, in the 4th kind of possibility of first aspect
Implementation in, before the base station obtains optimization object function, methods described also includes：
The angle of declination adjustment of the antenna that the base station receiving network managing system sends indicates message and optimization mesh
Scalar functions indicate the angle of declination adjustment of message, the antenna to indicate message for indicating the base station adjustment day
The angle of declination of line, the optimization object function instruction message includes optimization object function and the optimization aim
Parameter value.
With reference to any of the above-described kind of possible implementation of first aspect, in the 5th kind of possibility of first aspect
Implementation in, the optimization object function is the function f (θ of the handling capacity of the base stationm),Or
The optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or
The optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm),Or
The optimization object function is the function f (θ of the weighted average spectrum efficiency of the base stationm),The parameter value of the optimization aim includes the spectrum efficiency of each user equipment
Weighted factoru；
Wherein, θmIt is the angle of declination of the antenna of base station, N is the number of user equipment, and U is user equipment
Set, ru(θm) it is the handling capacity of user equipment u, wuIt is the bandwidth of user equipment u.
With reference to any of the above-described kind of possible implementation of first aspect, in the 6th kind of possibility of first aspect
Implementation in, the base station determines the interference signal intensity of each user equipment, including：
The base station receives the Reference Signal Received Power RSRP of the neighbor cell that each user equipment sends；
The base station determines the interference letter of each user equipment according to the RSRP of the neighbor cell of each user equipment
Number intensity.
With reference to any of the above-described kind of possible implementation of first aspect, in the 7th kind of possibility of first aspect
Implementation in, methods described also includes：
The base station sends angle of declination instruction message to each neighbor base stations, and the angle of declination instruction message includes
The optimal angle of declination.
Second aspect, the embodiment of the present invention provides a kind of base station, including：
Acquisition module, for obtaining optimization object function, the optimization object function includes the base station
The function of handling capacity, the function of the average spectral efficiency (ase) of the base station, the weighting handling capacity of the base station
Any one in the function of the weighted average spectrum efficiency of function and the base station, the optimization object function
It is the convex function of the angle of declination on antenna；
Processing module, interference signal intensity and each user equipment and the base for determining each user equipment
Angle between standing；
The processing module, is additionally operable in the default adjustment of angle of declination is interval according to each user equipment
Interference signal intensity and the angle between each user equipment and the base station, using iterative segmentation calculate
Method obtains the optimal angle of declination of the optimization object function, and the optimal angle of declination is the optimization aim letter
The corresponding angle of declination of several optimal values；
The processing module, is additionally operable to for the angle of declination of antenna to be adjusted to the optimal angle of declination.
With reference to second aspect, in the first possible implementation of second aspect, the base station is also wrapped
Include sending module and receiver module；
The processing module, for determining the angle between each user equipment and the base station, including：
The processing module sends position measurement and indicates message by the sending module to each user equipment,
Institute position measurement indicates the message to be used to indicating the user equipment carry out position measurement, and to the base station
Send the positional information of the user equipment；
The processing module receives the positional information that each user equipment sends by the receiver module；
The positional information of processing module positional information respectively according to each user equipment and the base station is true
Fixed angle between the user equipment and the base station.
With reference to the first possible implementation of second aspect, in second possible reality of second aspect
In existing mode, the positional information of the user equipment include the user equipment to the base station level away from
From the height with the user equipment, the positional information of the base station includes the antenna height of the base station；
The positional information of processing module positional information respectively according to each user equipment and the base station is true
Fixed angle between the user equipment and the base station, including：
Processing module horizontal range respectively according to each user equipment to the base station, the user set
Standby height and the antenna height of the base station, using antitrigonometric function determine the user equipment with it is described
Angle between base station；
Wherein, the antitrigonometric function includes arctan function and arc cotangent function.
With reference to any of the above-described kind of possible implementation of second aspect, the third in second aspect may
Implementation in, institute position measurement indicates the message also to include measure the cycle information and sending method information
In at least one.
With reference to any of the above-described kind of possible implementation of second aspect, in the 4th kind of possibility of second aspect
Implementation in, the receiver module be additionally operable to receiving network managing system transmission antenna angle of declination
Adjustment indicates message and optimization object function indicates the angle of declination adjustment of message, the antenna to indicate message to use
In the angle of declination for indicating the base station to adjust antenna, the optimization object function indicates message including optimizing mesh
The parameter value of scalar functions and the optimization aim.
With reference to any of the above-described kind of possible implementation of second aspect, in the 5th kind of possibility of second aspect
Implementation in, the optimization object function is the function f (θ of the handling capacity of the base stationm),Or
The optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or
The optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm),Or
The optimization object function is the function f (θ of the weighted average spectrum efficiency of the base stationm),The parameter value of the optimization aim includes the spectrum efficiency of each user equipment
Weighted factoru；
Wherein, θmIt is the angle of declination of the antenna of base station, N is the number of user equipment, and U is user equipment
Set, ru(θm) it is the handling capacity of user equipment u, wuIt is the bandwidth of user equipment u.
With reference to any of the above-described kind of possible implementation of second aspect, in the 6th kind of possibility of second aspect
Implementation in, the processing module is used to determine the interference signal intensity of each user equipment, including：
The processing module receives the reference of the neighbor cell that each user equipment sends by the receiver module
Signal reception power RSRP；
The processing module determines the dry of each user equipment according to the RSRP of the neighbor cell of each user equipment
Disturb signal intensity.
With reference to any of the above-described kind of possible implementation of second aspect, in the 7th kind of possibility of second aspect
Implementation in, the sending module be additionally operable to each neighbor base stations send angle of declination indicate message, institute
Stating angle of declination instruction message includes the optimal angle of declination.
The downdip adjusting method of embodiment of the present invention antenna and base station, base station is by obtaining optimization aim letter
After number, triggering carry out antenna angle of declination adjustment, base station before the angle of declination to antenna is adjusted,
By determining the angle between the interference signal intensity of each user equipment and each user equipment and the base station,
The optimal of optimization object function is obtained in the default adjustment of angle of declination is interval using iterative splitting algorithm to have a down dip
Angle, and then the angle of declination of antenna is adjusted to the optimal angle of declination, so as to the antenna for realizing base station has a down dip
Optimizing and revising for angle, improves the angle of declination regulated efficiency of antenna, and optimizes network performance.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to reality
The accompanying drawing to be used needed for example or description of the prior art is applied to be briefly described, it should be apparent that, under
Accompanying drawing in the description of face is some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the downdip adjusting method embodiment one of inventive antenna；
Fig. 2 is an angle of declination schematic diagram for the antenna of base station；
Fig. 3 is the method flow diagram that base station obtains optimal angle of declination using iterative splitting algorithm；
Fig. 4 is the schematic diagram that iterative splitting algorithm obtains optimal angle of declination；
Fig. 5 is the signaling process figure of the downdip adjusting method embodiment two of inventive antenna；
Fig. 6 is the flow chart of the downdip adjusting method embodiment three of inventive antenna；
Fig. 7 is the structural representation of base station embodiment of the present invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
Fig. 1 is the flow chart of the downdip adjusting method embodiment one of inventive antenna, as shown in figure 1,
The method of the present embodiment can include：
Step 101, base station obtain optimization object function, and the optimization object function includes the base station
The function of handling capacity, the function of the average spectral efficiency (ase) of the base station, the weighting handling capacity of the base station
Any one in the function of the weighted average spectrum efficiency of function and the base station, the optimization object function
It is the convex function of the angle of declination on antenna.
Wherein, the optimization object function can be the default optimization object function in base station, when base station judges to need
When being adjusted to the angle of declination of antenna, the optimization object function can be obtained, it is true using following step
Fixed optimal angle of declination, optimal angle of declination is adjusted to by the angle of declination of antenna, optimizes network performance.The optimization
Object function can also be that the angle of declination adjustment of the antenna that base station receiving network managing system (OAM) sends refers to
Show that message and optimization object function indicate message, indicate to obtain optimization mesh in message from the optimization object function
Scalar functions, and indicate message to be adjusted the angle of declination of antenna according to the adjustment of the angle of declination of the antenna.
Step 102, the base station determine interference signal intensity and each user equipment and the institute of each user equipment
State the angle between base station.
Specifically, the base station determines that each user equipment of data is being transmitted in base station, and determine each
Angle between the interference signal intensity of user equipment and each user equipment and the base station.
Step 103, the base station are in the default adjustment of angle of declination is interval according to each user equipment
Angle between interference signal intensity and each user equipment and the base station, using iterative splitting algorithm
The optimal angle of declination of the optimization object function is obtained, the optimal angle of declination is the optimization object function
The corresponding angle of declination of optimal value.
Specifically, because optimization object function is the convex function on angle of declination, so the optimization aim letter
There is maximum (i.e. optimal value) in number.
The angle of declination of antenna is adjusted to the optimal angle of declination by step 104, the base station.
Optionally, the base station determines the angle between each user equipment and the base station, specially：Institute
State base station and send position measurement instruction message to each user equipment, institute's position measurement indicates message for referring to
Show that the user equipment carries out position measurement, and the positional information of the user equipment is sent to the base station；
The base station receives the positional information that each user equipment sends；The base station is respectively according to each user equipment
The positional information of positional information and the base station determines the angle between the user equipment and the base station.
Optionally, the positional information of the user equipment includes the user equipment to the level of the base station
The height of distance and the user equipment, the positional information of the base station includes the antenna height of the base station；
The positional information of base station positional information respectively according to each user equipment and the base station determines the use
Angle between family equipment and the base station, is specifically as follows：The base station is respectively according to each user equipment
The antenna height of horizontal range, the height of the user equipment and the base station to the base station, utilizes
Antitrigonometric function determines the angle between the user equipment and the base station；Wherein, the anti-triangle letter
Number includes arctan function and arc cotangent function.
It should be noted that, another attainable mode, user equipment can obtain the absolute of user equipment
Position, the positional information of corresponding user equipment can include the absolute position of user equipment and the user
The height of equipment, the positional information of base station can include the absolute position of base station and the antenna height of base station,
Then base station can calculate acquisition user equipment and arrive according to the absolute position of the absolute position of user equipment and base station
Horizontal range between base station, and then horizontal range, the height of user equipment according to user equipment to base station
Degree and the antenna height of base station, the angle between user equipment and base station is determined using antitrigonometric function.
Optionally, institute's position measurement indicates message also including in measure the cycle information and sending method information
At least one.
Optionally, the base station determines the angle between each user equipment and the base station, can also use
Realized to " angle-of- arrival estimation " method etc., both, the base station receives signal by processing, by " arriving
Up to angular estimation " method obtain the angle between each user equipment and the base station.For " reaching
The concrete methods of realizing of angular estimation ", here is omitted.
Optionally, methods described can also include：The antenna that the base station receiving network managing system sends
Angle of declination adjustment indicate message and optimization object function to indicate the angle of declination adjustment of message, the antenna to refer to
Show message for indicating the base station to adjust the angle of declination of antenna, the optimization object function indicates message package
Include the parameter value of optimization object function and the optimization aim.
Optionally, the optimization object function is the function f (θ of the handling capacity of the base stationm),Or
The optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or
The optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm),The parameter value of the optimization aim be the handling capacity of each user equipment weighting because
Sub- αu；Or
The optimization object function is the function f (θ of the weighted average spectrum efficiency of the base stationm),The parameter value of the optimization aim includes adding for the handling capacity of each user equipment
Weight factor αu；
Wherein, θmIt is the angle of declination of the antenna of base station, N is the number of user equipment, and U is user equipment
Set, ru(θm) it is the handling capacity of user equipment u, wuIt is the bandwidth of user equipment u.
Specifically, the weighted factor of the handling capacity for each user equipmentu, Cell Center User equipment and
Edge customer equipment can use different weighted factors, can reach centre of equilibrium user equipment and edge
The effect of the spectrum efficiency of user equipment.For example, can be set than central user for edge customer equipment is used
It is standby to compare larger weighted factoru, the spectrum efficiency of edge customer equipment can be effectively improved.
Optionally, the base station determines the interference signal intensity of each user equipment, is specifically as follows：It is described
Base station receives the Reference Signal Received Power RSRP of the neighbor cell that each user equipment sends；The base station root
The interference signal intensity of each user equipment is determined according to the RSRP of the neighbor cell of each user equipment.
Optionally, methods described can also include：The base station sends angle of declination and indicates to each neighbor base stations
Message, the angle of declination instruction message includes the optimal angle of declination.
The present embodiment, after obtaining optimization object function, triggering carries out the angle of declination adjustment of antenna for base station,
Base station before the angle of declination to antenna is adjusted, by the interference signal intensity for determining each user equipment
And the angle between each user equipment and the base station, utilize iteration in the default adjustment interval of angle of declination
Partitioning algorithm obtains the optimal angle of declination of optimization object function, and then the angle of declination of antenna is adjusted into this most
Excellent angle of declination, so as to the angle of declination for realizing the antenna of base station is optimized and revised, improves the angle of declination of antenna
Regulated efficiency, and optimize network performance.
It should be noted that a base station one cell of correspondence in the embodiment of the present invention, base station and cell
Meaning it is identical, its title can be with used interchangeably.Will be understood, base station can include multiple small
Area, such as three cells, then can also can be adopted for the adjustment of the angle of declination of the antenna of each cell
With the adjustment mode of the embodiment of the present invention, its know-why is identical.
Using several specific embodiments, the technical scheme to embodiment of the method shown in Fig. 1 below is carried out in detail
Describe in detail bright.
Fig. 2 is an angle of declination schematic diagram for the antenna of base station, as shown in Fig. 2 the height of base station is hm,
The height of user equipment (User Equipment, abbreviation UE) is hu, the level between base station and UE
Distance is dm,u, the angle of declination of antenna is θm, the angle of declination of antenna is antenna main lobe direction and horizontal direction
Between angle, the angle between user equipment and base station is θm,u.Antenna has adjustable angle of declination θm,
Angle of declination can produce influence to performance indications such as the covering of system, handling capacity and spectrum efficiencies.Antenna
Angle of declination is adjusted in rational scope, θmin≤θm≤θmax.According to base station m as shown in Figure 2 and user
The position relationship and angle of equipment u.Wherein user equipment and base station can be calculated using following formula (1)
Between angle thetam,u。
It is possible, firstly, to obtain the handling capacity of unique user by following manner.Specifically, to certain user
Equipment u, u ∈ U, U are user device set, and its serving BS is designated as m, and u receives signal from m, and
Disturbed by other base stations.
If Gm,u(θm) it is antenna gains of the base station m to user equipment u, ρm,uIt is the path loss between m and u
The 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 m and u (km),
β is path loss coefficient.
Antenna gain Gm,u(θm) be made up of horizontal antenna gain and vertical antenna gain two parts, wherein level
Horizontal sextant angle between antenna gain and m and uIt is relevant, hung down between vertical antenna gain and m and u
Straight angle thetam,uIt is relevant.And the two angles depend on the position of m and u.
According to the definition of 3GPP, the antenna gain G of user equipment um,u(θm) log-domainExpression
Formula is：
WhereinIt is horizontal antenna gain,It is the angle between u and antenna main lobe direction：
AV(θ) is vertical antenna gain, and θ is the vertical angle of u and antenna：
Wherein, θ3dB=10 °, SLAv=20dB.θetiltIt is Downtilt.
For simplicity, horizontal antenna gainWith vertical antenna gainTable can be distinguished
It is shown as：
Accordingly, have
Sm,u(θm)=Gm,u(θm)ρm,uPm (8)
In embodiments of the present invention, base station is independently according to can be obtained information to optimize and revise oneself
Antenna angle of declination, and Downtilt after oneself is adjusted tells periphery by modes such as signalings
Adjacent base station.
For base station m, its user equipment for transmitting data has NmIt is individual, constitute user device set Um,
Nm=| Um|。
The adjacent cell of base station m constitutes a set, is designated as Mm。
If base station m adjusts the angle of declination of antenna, the angle of declination of the antenna of other base stations is, it is known that and in short-term
It is interior to keep constant.
Then, user equipment u (u ∈ U of other base stations for base station mm) interference be：
The formula for calculating the SINR of user equipment u is：
Correspondingly, the handling capacity of user equipment u is：
ru(θm)=wulog(1+γu(θm)) (11)
May certify that, ru(θm) it is θmConvex function.
For the optimizing index selected, corresponding optimization object function is can obtain.Usually, shown in Fig. 1
Embodiment in optimization object function be ru(θm) linear function, according to Convex Function Theory, these are excellent
It is also convex function to change object function.
By taking the weighted average spectrum efficiency of cell m as an example, have
This optimization object function is convex function.Convex function has unimodal characteristic, i.e., in interval
θmin≤θm≤θmaxIt is interior, one and only one maximum.Therefore, can be used iterative splitting algorithm to solve.Specifically
's：Optimization object function is the unimodal function of the angle of declination of antenna, using the method that iterative segmentation is searched for
To find optimal value.Iterative segmentation searching method is in given initial interval interior search pole for function of a single variable
A kind of method of value, it is most worth by the known range being most worth of constantly diminution unimodal function so as to find.
Preferably, when splitting interval with golden section characteristic, be otherwise known as golden section search method.It is
Optimization calculates classic algorithm, with algorithm it is simple, convergence rate is uniform, effect is preferable and famous, is many
The basis of optimized algorithm, but it is only applicable to the convex function on one-dimensional interval, i.e., only in unimodal interval interior
One-dimensional optimizing can be carried out.Its general principle is：According to " roguing, it is excellent to deposit " principle, symmetry principle and
Principle is shunk Deng ratio progressively to reduce the region of search.
It can be seen from above-mentioned analysis, in order to calculate the user equipment u of cell m in different angle of declination θmLetter
Number interference-to-noise ratio SINR is, it is necessary to the useful signal strength S of Serving cell m to user equipment um,u(θm),
And the interference signal intensity I of other cellsu.Wherein, the interference I that user equipment u is subject touDo not receive cell m
Downtilt θmInfluence, be constant.The adjacent cell RSRP information that can be reported by u is estimated.
Received signal strength Ss of the user equipment u under current angle of declinationm,u(θm), clothes can be reported by measurement
Business cell.User equipment u is in order to estimate the received signal strength in other angle of declinations, it is necessary to use day
Line gain Gm,u(θm).Antenna gain is made up of horizontal antenna gain and vertical antenna gain two parts, wherein
Horizontal sextant angle between horizontal gain and m and uIt is relevant, hung down between vertical antenna gain and m and u
Straight angle thetam,uIt is relevant.In order that base station obtains the two information, user equipment u can be by measuring and counting
Directly reported after calculation, it is also possible to allow user equipment u to report the positional information of oneself, itself is combined by base station
Positional information calculateAnd θm,u.Specifically, location technology can have been supported using 3GPP,
That is the location protocol of LTE (LPP, 3GPP TS 36.355).
In general, this method is it should be understood that the angle information that has a down dip, the RSRP information of the antenna of neighbor base stations,
And the positional information of user equipment.Wherein adjacent cell RSRP information belongs to the conventional survey that LTE has been supported
Amount information, the positional information of user equipment can be measured by the location protocol (LPP) of LTE and report service
Base station.
Fig. 3 is the method flow diagram that base station obtains optimal angle of declination using iterative splitting algorithm, and Fig. 4 is for repeatedly
The schematic diagram of optimal angle of declination is obtained for partitioning algorithm, as shown in figure 3, methods described can include：
The parameters of step 301, Base station initialization iterative splitting algorithm.
Specifically, base station can set the initial region of search [θmin,θmax], and set terminate the algorithm
Siding-to-siding block length threshold value ε.
Step 302, base station carry out interval division to the region of search.
Specifically, base station is in the initial region of search [θmin,θmax] two point θ of middle selection1And θ2(θ1<θ2),
Interval is divided into three sections, Fig. 4 is specifically may refer to, Fig. 4 looks for one of maximum to walk in denoting algorithm
Suddenly, optimization object function value is located in vertical coordinate axle, and the angle of declination θ of antenna is located at horizontal axis,
Choose θ1And θ2Mode have many optional modes.For example, can be chosen according to golden section point,
I.e.：
θ1=θmin+0.382(θmax-θmin)
θ2=θmin+0.618(θmax-θmin)
Step 303, base station carry out interval and give up to the region of search.
If f (θ1)>f(θ2), illustrate maximum not in region [θ2,θmax] in, then this subregion is given up.
Next in [θmin,θ2] in continue search for.That is, θ is mademax←θ2。
If f (θ1)<f(θ2), illustrate maximum not in region [θmin,θ1] in, then this subregion is given up.
Next in [θ1,θmax] in continue search for.That is, θ is mademin←θ1。
It should be noted that the symbol " ← " in the present embodiment represents assignment operation, such as " A ← B "
B is assigned to A by expression.
Step 304, whether region of search length is judged less than default threshold value ε, if so, then performing step
Rapid 305, otherwise return to step 302.
Step 305, end search, obtain optimal angle of declination.
Specifically, optimal angle of declination θ*=(θmax-θmin)/2, and corresponding optimization objective function value：
f(θ*)。
The present embodiment, base station obtains optimal angle of declination using iterative splitting algorithm, can quickly determine optimal
Angle of declination, so as to be adjusted to the angle of declination of antenna with optimal angle of declination, optimizes network performance.
Fig. 5 is the signaling process figure of the downdip adjusting method embodiment two of inventive antenna, such as Fig. 5 institutes
Show, the present embodiment includes NMS OAM, base station and user equipment collection, wherein user equipment collection
Including multiple UE, each UE provides service by the base station, and the method for the present embodiment can include：
S401, OAM determine optimization object function and optimization object function according to the operation conditions of network
Parameter value.
S402, OAM indicate message and optimization object function to indicate to the angle of declination adjustment of base station transmission antenna
Message.
Wherein, the angle of declination that the angle of declination adjustment instruction message of the antenna is used to indicate base station to carry out antenna is adjusted
Whole, the optimization object function indicates the parameter that message can be including optimization object function and optimization object function
Value.Wherein, the parameter value of optimization object function can include that the default adjustment of angle of declination is interval, except this it
Outward, corresponding parameter value can also be included for different optimization object functions, for example, each user equipment
Handling capacity weighted factor.
S403, base station send position measurement and indicate message to each user equipment.
Wherein, position measurement instruction message carries out position measurement for instruction user equipment, and reports survey
Amount result.Position measurement instruction message can also match somebody with somebody confidence including the measurement such as measure the cycle, reporting schemes
Breath.
Each user equipment that S404, user equipment are concentrated indicates message to be sent certainly to base station according to position measurement
The positional information of body.
Specifically, user equipment can carry out position measurement by the location protocol (LPP) of LTE.Can be with
Understand, user equipment can also carry out position measurement using other modes, such as to being equipped with satellite navigation
The user equipment of system, can carry out position measurement by satellite navigation system.
Each user equipment that S405, user equipment are concentrated sends neighbor cell RSRP information to base station.
S406, base station are according to the folder between each user equipment of positional information calculation of each user equipment and base station
Angle θm,u, and the dry of each user equipment is calculated according to the neighbor cell RSRP information of each user equipment transmission
Disturb signal intensity.
Specifically, base station can be each according to being determined with the positional information of each family equipment and the positional information of base station
Angle theta between user equipment and base stationm,u, can specifically be calculated using formula (1).
S407, base station are in the default adjustment of angle of declination is interval according to the interference signal of each user equipment
The angle theta of intensity and each user equipment and the base stationm,u, obtain described excellent using iterative splitting algorithm
Change the optimal angle of declination of object function.
Embodiment illustrated in fig. 3 is specifically may refer to, here is omitted.
The angle of declination of antenna is adjusted to optimal angle of declination by S408, base station.
S409, base station send angle of declination adjustment configured information to each neighbor base station.
Wherein, angle of declination adjustment configured information includes the angle of declination after adjustment.
The present embodiment, base station carries out the angle of declination adjustment of antenna according to the instruction of OAM, is carrying out antenna
By obtaining the positional information of user equipment and the neighbor cell RSRP of user equipment during angle of declination adjustment
Information, is obtained using iterative splitting algorithm and causes the maximized optimal angle of declination of optimization object function, and this is excellent
Change handling capacity or average spectral efficiency (ase) that object function can be base station, so as to the angle of declination of antenna be adjusted
It is optimal angle of declination, optimizes the performance of base station, and then optimize network performance.
Fig. 6 is the flow chart of the downdip adjusting method embodiment three of inventive antenna, as shown in fig. 6,
The method of the present embodiment can include：
S601, base station are pre-processed.
Wherein, S601 can specifically include：S6011：Base station determines to transmit data in this base station
User equipment；S6012：Base station receives the positional information of user equipment to report；S6013：Base station according to
The situation of the neighbor cell measurement report that family equipment is reported, determines the adjacent cell set of this base station；S6014：Base
Stand to each user equipment, the adjacent cell RSRP information according to user equipment to report, estimation interference signal is strong
Degree.
S602, base station carry out the optimization processing of the angle of declination of antenna.
Wherein, S602 can specifically include：S6021：Base station determines the optimization object function that OAM is set
And relevant parameter；S6022：Base station uses iterative splitting algorithm according to optimization object function and relevant parameter
Obtain the optimal angle of declination of base station.
S603, base station judge that whether current with antenna optimal angle of declination angle of declination be identical, if it is not, then holding
Row S604, if so, then performing S605.
S604, base station are adjusted to optimal angle of declination to the angle of declination of antenna, and to neighbor base stations transmission antenna
Angle of declination adjustment notify.
S605, base station judge whether to meet predetermined time period condition, or meet predefined trigger event,
If so, then performing S601.
Specifically, predetermined time period condition can be a time cycle, accordingly, when this is met
Between the cycle, then perform S601.
The present embodiment, by setting default time period or predefined trigger event, when meeting, base
Station carries out angle of declination optimization processing, the angle of declination of antenna is adjusted into the angle of declination after optimization, so as to realize
Optimizing and revising for the angle of declination of the antenna of base station, optimizes network performance.
Fig. 7 is the structural representation of base station embodiment of the present invention, as shown in fig. 7, the base of the present embodiment
Standing to include：Acquisition module 11 and processing module 12, wherein, acquisition module 11 is used to obtain and optimizes
Object function, the function of the handling capacity of the optimization object function including the base station, the base station it is flat
The weighted average of the function, the function of the weighting handling capacity of the base station and the base station of equal spectrum efficiency is frequently
Any one in the function of spectrum efficiency, the optimization object function is the convex function of the angle of declination on antenna,
Processing module 12 is used to determine the interference signal intensity and each user equipment of each user equipment and the base station
Between angle；The processing module 12, is additionally operable in the default adjustment of angle of declination is interval according to described
Angle between the interference signal intensity of each user equipment and each user equipment and the base station, utilizes
Iterative splitting algorithm obtains the optimal angle of declination of the optimization object function, and the optimal angle of declination is described
The corresponding angle of declination of optimal value of optimization object function；The processing module 12, is additionally operable under antenna
Inclination maneuver is the optimal angle of declination.
The base station also includes sending module 13 and receiver module 14；
The processing module 12, for determining the angle between each user equipment and the base station, including：
The processing module 12 sends position measurement and indicates by the sending module 13 to each user equipment
Message, institute position measurement indicates the message to be used to indicating the user equipment carry out position measurement, and to institute
State the positional information that base station sends the user equipment；
The processing module 12 receives the positional information that each user equipment sends by the receiver module 14；
The position letter of the positional information respectively according to each user equipment of the processing module 12 and the base station
Breath determines the angle between the user equipment and the base station.
Optionally, the positional information of the user equipment includes the user equipment to the level of the base station
The height of distance and the user equipment, the positional information of the base station includes the antenna height of the base station；
The positional information of the positional information respectively according to each user equipment of the processing module 12 and the base station is true
Fixed angle between the user equipment and the base station, including：The processing module 12 is respectively according to each
The antenna of user equipment to the horizontal range, the height of the user equipment and the base station of the base station is high
Degree, the angle between the user equipment and the base station is determined using antitrigonometric function；Wherein, it is described
Antitrigonometric function includes arctan function and arc cotangent function.
Optionally, institute's position measurement indicates message also including in measure the cycle information and sending method information
At least one.
Optionally, the receiver module 13 is additionally operable to the angle of declination of the antenna of receiving network managing system transmission
Adjustment indicates message and optimization object function indicates the angle of declination adjustment of message, the antenna to indicate message to use
In the angle of declination for indicating the base station to adjust antenna, the optimization object function indicates message including optimizing mesh
The parameter value of scalar functions and the optimization aim.
Optionally, the optimization object function is the function f (θ of the handling capacity of the base stationm),Or, the optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or, the optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm),Or, the optimization object function is the weighted average spectrum efficiency of the base station
FunctionThe parameter value of the optimization aim includes each user equipment
Spectrum efficiency weighted factoru；Wherein, θmIt is the angle of declination of the antenna of base station, N is user equipment
Number, U for user equipment set, ru(θm) it is the handling capacity of user equipment u.
Optionally, the processing module 12 is used to determine the interference signal intensity of each user equipment, including：
The processing module receives the reference signal of the neighbor cell that each user equipment sends by the receiver module
Receiving power RSRP；The processing module determines each use according to the RSRP of the neighbor cell of each user equipment
The interference signal intensity of family equipment.
Optionally, the sending module 13 is additionally operable to send angle of declination instruction message, institute to each neighbor base stations
Stating angle of declination instruction message includes the optimal angle of declination.
The device of the present embodiment, can be used for performing the technical scheme of embodiment of the method shown in Fig. 1, in fact
Existing principle is similar with technique effect, and here is omitted.
It should be noted that the receiver module 14 in the embodiment of the present invention can be with the receiver pair of base station
Should, it is also possible to the transceiver of respective base station.Sending module 13 can be corresponding with the transmitter of base station, also may be used
With the transceiver of respective base station.Acquisition module 11 and processing module 12 can be corresponding with the processor of base station,
Here processor can be a central processing unit (Central Processing Unit, CPU), or
Specific integrated circuit (Application Specific Integrated Circuit, ASIC), or complete to implement
One or more integrated circuits of the embodiment of the present invention.Base station can also include memory, and memory is used for
Store instruction code, processor adjusts memory-aided instruction code, the reception in the control embodiment of the present invention
Module 14 and sending module 13 perform aforesaid operations.
One of ordinary skill in the art will appreciate that：Realize all or part of step of above-mentioned each method embodiment
Suddenly can be completed by the related hardware of programmed instruction.Foregoing program can be stored in a computer can
In reading storage medium.The program upon execution, performs the step of including above-mentioned each method embodiment；And
Foregoing storage medium includes：ROM, RAM, magnetic disc or CD etc. are various can be with store program codes
Medium.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
Its limitation；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Or equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (16)
1. a kind of downdip adjusting method of antenna, it is characterised in that including：
Base station obtains optimization object function, and the optimization object function includes the letter of the handling capacity of the base station
The function of the average spectral efficiency (ase) of several, described base station, the function of the weighting handling capacity of the base station and described
Any one in the function of the weighted average spectrum efficiency of base station, the optimization object function is on antenna
Angle of declination convex function；
The base station is determined between the interference signal intensity of each user equipment and each user equipment and the base station
Angle；
The base station is strong according to the interference signal of each user equipment in the default adjustment of angle of declination is interval
Degree and the angle between each user equipment and the base station, obtain described excellent using iterative splitting algorithm
Change the optimal angle of declination of object function, the optimal angle of declination is the optimal value pair of the optimization object function
The angle of declination answered；
The angle of declination of antenna is adjusted to the optimal angle of declination by the base station.
2. method according to claim 1, it is characterised in that the base station determines each user equipment
With the angle between the base station, including：
The base station sends position measurement and indicates message to each user equipment, and institute's position measurement indicates message
For indicating the user equipment to carry out position measurement, and the position of the user equipment is sent to the base station
Confidence ceases；
The base station receives the positional information that each user equipment sends；
The positional information of base station positional information respectively according to each user equipment and the base station determines institute
State the angle between user equipment and the base station.
3. method according to claim 2, it is characterised in that the positional information of the user equipment
The height of horizontal range and the user equipment including the user equipment to the base station, the base station
Positional information including the base station antenna height；
The positional information of base station positional information respectively according to each user equipment and the base station determines institute
The angle between user equipment and the base station is stated, including：
Base station horizontal range respectively according to each user equipment to the base station, the user equipment
Height and the antenna height of the base station, determine the user equipment with the base station using antitrigonometric function
Between angle；
Wherein, the antitrigonometric function includes arctan function and arc cotangent function.
4. method according to claim 3, it is characterised in that institute's position measurement indicates message also
Including in measure the cycle information and sending method information at least one.
5. the method according to any one of Claims 1-4, it is characterised in that the base station obtains
Before optimization object function, methods described also includes：
The angle of declination adjustment of the antenna that the base station receiving network managing system sends indicates message and optimization mesh
Scalar functions indicate the angle of declination adjustment of message, the antenna to indicate message for indicating the base station adjustment day
The angle of declination of line, the optimization object function instruction message includes optimization object function and the optimization aim
Parameter value.
6. method according to claim 5, it is characterised in that the optimization object function is described
Function f (the θ of the handling capacity of base stationm),Or
The optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or
The optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm), Or
The optimization object function is the function f (θ of the weighted average spectrum efficiency of the base stationm),The parameter value of the optimization aim includes the spectrum efficiency of each user equipment
Weighted factoru；
Wherein, θmIt is the angle of declination of the antenna of base station, N is the number of user equipment, and U is user equipment
Set, ru(θm) it is the handling capacity of user equipment u, wuIt is the bandwidth of user equipment u.
7. the method according to any one of Claims 1-4, it is characterised in that the base station determines
The interference signal intensity of each user equipment, including：
The base station receives the Reference Signal Received Power RSRP of the neighbor cell that each user equipment sends；
The base station determines the interference letter of each user equipment according to the RSRP of the neighbor cell of each user equipment
Number intensity.
8. the method according to any one of Claims 1-4, it is characterised in that methods described is also wrapped
Include：
The base station sends angle of declination instruction message to each neighbor base stations, and the angle of declination instruction message includes
The optimal angle of declination.
9. a kind of base station, it is characterised in that including：
Acquisition module, for obtaining optimization object function, the optimization object function includes the base station
The function of handling capacity, the function of the average spectral efficiency (ase) of the base station, the weighting handling capacity of the base station
Any one in the function of the weighted average spectrum efficiency of function and the base station, the optimization object function
It is the convex function of the angle of declination on antenna；
Processing module, interference signal intensity and each user equipment and the base for determining each user equipment
Angle between standing；
The processing module, is additionally operable in the default adjustment of angle of declination is interval according to each user equipment
Interference signal intensity and the angle between each user equipment and the base station, using iterative segmentation calculate
Method obtains the optimal angle of declination of the optimization object function, and the optimal angle of declination is the optimization aim letter
The corresponding angle of declination of several optimal values；
The processing module, is additionally operable to for the angle of declination of antenna to be adjusted to the optimal angle of declination.
10. base station according to claim 9, it is characterised in that the base station also includes sending mould
Block and receiver module；
The processing module, for determining the angle between each user equipment and the base station, including：
The processing module sends position measurement and indicates message by the sending module to each user equipment,
Institute position measurement indicates the message to be used to indicating the user equipment carry out position measurement, and to the base station
Send the positional information of the user equipment；
The processing module receives the positional information that each user equipment sends by the receiver module；
The positional information of processing module positional information respectively according to each user equipment and the base station is true
Fixed angle between the user equipment and the base station.
11. base stations according to claim 10, it is characterised in that the position letter of the user equipment
Breath includes the user equipment to the horizontal range of the base station and the height of the user equipment, the base
The positional information stood includes the antenna height of the base station；
The positional information of processing module positional information respectively according to each user equipment and the base station is true
Fixed angle between the user equipment and the base station, including：
Processing module horizontal range respectively according to each user equipment to the base station, the user set
Standby height and the antenna height of the base station, using antitrigonometric function determine the user equipment with it is described
Angle between base station；
Wherein, the antitrigonometric function includes arctan function and arc cotangent function.
12. base stations according to claim 11, it is characterised in that institute's position measurement indicates message
Also include at least one in measure the cycle information and sending method information.
13. base station according to any one of claim 10 to 12, it is characterised in that the reception
The angle of declination adjustment that module is additionally operable to the antenna of receiving network managing system transmission indicates message and optimization aim
Function indicates the angle of declination adjustment of message, the antenna to indicate message for indicating the base station adjustment antenna
Angle of declination, the optimization object function indicates the message to include optimization object function and the optimization aim
Parameter value.
14. base stations according to claim 13, it is characterised in that the optimization object function is institute
State the function f (θ of the handling capacity of base stationm),Or
The optimization object function is the function f (θ of the weighting handling capacity of the base stationm),The weighting of the handling capacity of the parameter value of the optimization aim including each user equipment because
Sub- αu；Or
The optimization object function is the function f (θ of the average spectral efficiency (ase) of the base stationm), Or
The optimization object function is the function f (θ of the weighted average spectrum efficiency of the base stationm),The parameter value of the optimization aim includes the spectrum efficiency of each user equipment
Weighted factoru；
Wherein, θmIt is the angle of declination of the antenna of base station, N is the number of user equipment, and U is user equipment
Set, ru(θm) it is the handling capacity of user equipment u, wuIt is the bandwidth of user equipment u.
15. base station according to any one of claim 10 to 12, it is characterised in that the treatment
Module is used to determine the interference signal intensity of each user equipment, including：
The processing module receives the reference of the neighbor cell that each user equipment sends by the receiver module
Signal reception power RSRP；
The processing module determines the dry of each user equipment according to the RSRP of the neighbor cell of each user equipment
Disturb signal intensity.
16. base station according to any one of claim 10 to 12, it is characterised in that the transmission
Module is additionally operable to send angle of declination instruction message to each neighbor base stations, and the angle of declination instruction message includes institute
State optimal angle of declination.
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Application publication date: 20170613 |