CN104734755B - A kind of method for transmitting signals and device - Google Patents
A kind of method for transmitting signals and device Download PDFInfo
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- CN104734755B CN104734755B CN201510083482.6A CN201510083482A CN104734755B CN 104734755 B CN104734755 B CN 104734755B CN 201510083482 A CN201510083482 A CN 201510083482A CN 104734755 B CN104734755 B CN 104734755B
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Abstract
The present invention provides a kind of method for transmitting signals and devices, to realize when the antenna of base station carries out signal transmission with UE antennas, pass through the adjustment of base station antenna positions so that antenna for base station polarization direction is matched with UE antenna polarizations direction, to reduce the loss in signals transmission.This method includes：When receiving the signal of user equipment (UE), channel estimation is carried out to the signal of the UE, obtains channel estimation value；According to the channel estimation value, the adjusting parameter of aerial position is determined；Position adjustment is carried out to the antenna according to the adjusting parameter, and signal transmission is carried out with the UE using the antenna after adjustment.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of method for transmitting signals and device.
Background technology
In the epoch of network rapid development, user equipment (UE) is also more and more important to the dependence of network.Either walk
Road still stays at home, and user is required for wireless network to cover, so base station is required to have the function of powerful wireless coverage.
However, with the development of science and technology, indoor wireless distribution system mode is also more and more, can by indoor distributed system,
Outdoor macro station penetrates the modes such as indoor or indoor deployment miniaturization base station to solve.But first two mode is due to considering cost
Property, site selection and implement the influences of the factors such as limiting factor, therefore the application of indoor small base station is more and more extensive.
For miniaturization base station, main application built-in aerial or miniaturization external antenna, more than ten meters of covering is to several
Ten meters of range, UE application environments are mainly based on sighting distance.In such a case, the polarization mode of antenna for base station and UE antennas is
No matching will make a significant impact the receptivity of UE.
In the prior art, the incoming wave of UE is generally received using vertical polarization and dual polarized antenna.When the polarization of incoming wave
When the polarization direction of direction and reception antenna is inconsistent, the signal received will become smaller, that is, polarization loss occurs.Example
Such as, when receiving vertical polarization or horizontal polarized wave with+45 ° of poliarizing antennas, alternatively, when receiving+45 ° of poles with vertical polarized antenna
When changing wave or -45 ° of polarized waves, polarization loss can be all generated.When the polarization direction of reception antenna and the polarization direction of incoming wave are complete
The incoming wave of reception antenna reception vertical polarization when orthogonal, or with horizontal polarization, antenna just do not receive the energy of incoming wave completely
Amount, polarization loss is maximum in this case, claims polarization completely isolated.
Moreover, the application for exterior aerial, due to the complexity of wireless environment, due to various refractions reflection cause it is more
Diameter can cause space channel to generate larger angular spread near antenna for base station or UE antennas, a certain so as to cause receiving side
Signal in polarization direction has and is partly coupled on cross-polarized antenna.That is even if UE due to it is hand-held or place because
Element causes antenna for base station and UE antenna polarizations to mismatch, but due to the influence of angular spread, leads to antenna for base station and UE antennas pole
Change is obscured, it is also possible to the loss of mitigation signal transimission power.
But for the view distance environment of indoor small base station applies, the not energy coupling between co polar signal in space channel
It closes smaller, indoors since antenna polarization caused by UE is hand-held or placement factor mismatches, the damage of signal transmission power will be caused
Consumption can not make up.
So in the prior art, the antenna of base station is minimized with UE antennas when carrying out signal transmission, because of the day of base station
Linear polarization direction and the polarization direction of UE antennas mismatch, and cause great loss.
Invention content
An embodiment of the present invention provides a kind of method for transmitting signals and devices, to realize antenna and UE antennas in base station
When carrying out signal transmission, pass through the adjustment of base station antenna positions so that the polarization side of the polarization direction and UE antennas of antenna for base station
To matching, to reduce the loss in signals transmission.
An embodiment of the present invention provides a kind of method for transmitting signals, this method includes：
When receiving the signal of user equipment (UE), channel estimation is carried out to the signal of the UE, obtains channel estimation value；
According to the channel estimation value, the adjusting parameter of aerial position is determined；
Position adjustment is carried out to the antenna according to the adjusting parameter, and is carried out with the UE using the antenna after adjustment
Signal transmission.
Specifically, in this way, first when antenna for base station receives the signal of user equipment (UE), which has one
Fixed polarization direction carries out channel estimation to the signal of the UE, channel estimation value is obtained, then according to all channel estimations
Value, determines the adjusting parameter of aerial position, finally carries out position adjustment to the antenna according to the adjusting parameter so that base station
Antenna polarization direction is matched with the polarization direction of UE antennas, then carries out signal transmission with the UE using the antenna after adjustment.
To realize that antenna and UE antennas in base station when carrying out signal transmission, pass through the adjustment of base station antenna positions so that base station
The polarization direction of antenna is matched with the polarization direction of UE antennas, to reduce the loss in signal transmission.
Preferably, according to the channel estimation value, the adjusting parameter of aerial position is determined, including：
The current location for determining antenna determines aerial position according to the current location of the channel estimation value and antenna
Adjusting parameter.
Preferably, the current location of the antenna, including：The vertical folder of the current horizontal sextant angle of antenna and antenna currently
Angle；Wherein, the current horizontal sextant angle of antenna be antenna in the projection of horizontal plane and the first angle of first direction axis, antenna is current
Vertical angle be the antenna in the projection of vertical plane and the second angle of second direction axis, and first direction axis and second direction
Axis is mutually perpendicular to, and first direction axle position is on horizontal plane, and second direction axle position is on vertical plane.
Preferably, the signal to the UE carries out channel estimation, channel estimation value is obtained, including：
The horizontal plane and the vertical plane are respectively divided into n angular interval, obtain N number of angular interval combination,
In, N is equal to square of n, and each angular interval combination includes the angular interval of the angular interval and a vertical plane of a horizontal plane, right
I-th of angular interval combination, calculates the channel when antenna combines corresponding position reception signal using i-th of angular interval
Estimated value：
HLS,i=r (k) s*(k)·(xsinαicosβi+ycosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition that the antenna receives k-th of signal of the UE is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
Y represents the unit vector on second direction axis；
X represents the unit vector on third direction axis.
Specifically, because antenna for base station does not know the placement location of UE antennas, antenna for base station needs institute is angled
When receiving the UE signals, corresponding value carries out channel estimation in interval combinations, to determine which angle antenna for base station is in
When in interval combinations, loss reduction when receiving the signal of the UE antennas.
Preferably, according to the current location of the channel estimation value and antenna, the adjusting parameter packet of aerial position is determined
It includes：
Obtained N number of channel estimation value is subjected to modulus respectively, the maximum channel estimation value of obtained modulus value is corresponding
The target level angle and target vertical angle of the angular interval of horizontal plane and the angular interval of vertical plane respectively as tested rotating platform
Degree；
According to the current level angle of antenna and the target level angle, the horizontal adjustment angle of antenna is determined；
According to the current vertical angles of antenna and the target vertical angles, the vertical adjustment angle of antenna is determined.
Preferably, when receiving the signal of multiple and different UE, this method further includes：
The average value for calculating the horizontal adjustment angle of the corresponding antennas of the multiple difference UE, by the average value eventually as
The horizontal adjustment angle of the antenna；
And the average value of the corresponding antennas of the multiple difference UE adjusted the angle vertically is calculated, most by the average value
Vertical adjustment angle as the antenna eventually；
Alternatively,
The horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle；
Alternatively,
The horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle.
Specifically, in this way, antenna for base station can carry out free choosing according to the signal of the multiple and different UE received
Select by corresponding to which UE horizontal adjustment angle and vertical adjust the angle eventually as the horizontal adjustment angle of the antenna and perpendicular
It is straight to adjust the angle.
A kind of signal transmitting apparatus provided in an embodiment of the present invention, the device include：
Channel estimating unit, for when receiving the signal of user equipment (UE), carrying out channel to the signal of the UE and estimating
Meter, obtains channel estimation value；
Determination unit, for according to the channel estimation value, determining the adjusting parameter of aerial position；
Adjustment unit for carrying out position adjustment to the antenna according to the adjusting parameter, and utilizes the day after adjustment
Line carries out signal transmission with the UE.
Specifically, by the device, first when antenna for base station receives the signal of user equipment (UE), which has one
Fixed polarization direction carries out channel estimation to the signal of the UE, channel estimation value is obtained, then according to all channel estimations
Value, determines the adjusting parameter of aerial position, finally carries out position adjustment to the antenna according to the adjusting parameter so that base station
Antenna polarization direction is matched with the polarization direction of UE, then carries out signal transmission with the UE using the antenna after adjustment.To
Realize that antenna and UE antennas in base station when carrying out signal transmission, pass through the adjustment of base station antenna positions so that antenna for base station
Polarization direction matched with the polarization direction of UE antennas, to reduce the loss in signal transmission.
Preferably, the determination unit, is specifically used for：
The current location for determining antenna determines aerial position according to the current location of the channel estimation value and antenna
Adjusting parameter.
Preferably, the current location of the antenna, including：The vertical folder of the current horizontal sextant angle of antenna and antenna currently
Angle；Wherein, the current horizontal sextant angle of antenna be antenna in the projection of horizontal plane and the first angle of first direction axis, antenna is current
Vertical angle be the antenna in the projection of vertical plane and the second angle of second direction axis, and first direction axis and second direction
Axis is mutually perpendicular to, and first direction axle position is on horizontal plane, and second direction axle position is on vertical plane.
Preferably, the channel estimating unit, carries out channel estimation in the signal to the UE, obtains channel estimation value
When, it is specifically used for：
The horizontal plane and the vertical plane are respectively divided into n angular interval, obtain N number of angular interval combination,
In, N is equal to square of n, and each angular interval combination includes the angular interval of the angular interval and a vertical plane of a horizontal plane, right
I-th of angular interval combination, calculates the channel when antenna combines corresponding position reception signal using i-th of angular interval
Estimated value：
HLS,i=r (k) s*(k)·(xsinαicosβi+ycosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition that the antenna receives k-th of signal of the UE is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
Y represents the unit vector on second direction axis；
X represents the unit vector on third direction axis.
Specifically, because antenna for base station does not know the placement location of UE antennas, antenna for base station needs will be at all angles
Corresponding value carries out channel estimation when receiving the signal of UE transmissions in degree interval combinations, to determine which antenna for base station is in
When a angular interval combination, the loss reduction of the signal of UE transmissions is received.
Preferably, the determination unit determines antenna in the current location according to the channel estimation value and antenna
When the adjusting parameter of position, it is specifically used for：
Obtained N number of channel estimation value is subjected to modulus respectively, the maximum channel estimation value of obtained modulus value is corresponding
The target level angle and target vertical angle of the angular interval of horizontal plane and the angular interval of vertical plane respectively as tested rotating platform
Degree；
According to the current level angle of antenna and the target level angle, the horizontal adjustment angle of antenna is determined；
According to the current vertical angles of antenna and the target vertical angles, the vertical adjustment angle of antenna is determined.
Preferably, when receiving the signal of multiple and different UE, the determination unit is additionally operable to：
The average value for calculating the horizontal adjustment angle of the corresponding antennas of the multiple difference UE, by the average value eventually as
The horizontal adjustment angle of the antenna；
And the average value of the corresponding antennas of the multiple difference UE adjusted the angle vertically is calculated, most by the average value
Vertical adjustment angle as the antenna eventually；
Alternatively,
The horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle；
Alternatively,
The horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle.
Specifically, by the device, antenna for base station can carry out unrestricted choice according to the signal for receiving multiple and different UE
By corresponding to which UE horizontal adjustment angle and vertical adjust the angle eventually as the horizontal adjustment angle of the antenna and vertical
It adjusts the angle.
Description of the drawings
Fig. 1 is a kind of flow diagram of method for transmitting signals provided in an embodiment of the present invention；
Fig. 2 is a kind of coordinate schematic diagram of method for transmitting signals provided in an embodiment of the present invention；
Fig. 3 is a kind of idiographic flow schematic diagram of method for transmitting signals provided in an embodiment of the present invention；
Fig. 4 is a kind of another coordinate schematic diagram of method for transmitting signals provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of signal transmitting apparatus provided in an embodiment of the present invention.
Specific implementation mode
An embodiment of the present invention provides a kind of method for transmitting signals and devices, to realize antenna and UE antennas in base station
When carrying out signal transmission, pass through the adjustment of base station antenna positions so that antenna for base station polarization direction and UE antenna polarizations direction
Match, to reduce the loss in signals transmission.
Specifically, when antenna for base station receives the incoming wave that UE antennas are sent, which has certain polarization direction, to make
The polarization direction of antenna for base station is consistent with the polarization direction of the incoming wave, needs the position for adjusting antenna for base station so that antenna for base station
The position consistency of position and UE antennas, so that the polarization direction of antenna for base station is matched with the polarization direction of UE antennas, to
Reduce the loss in signals transmission.Wherein, polarization refers to vectorial property of electromagnetic wave during transmission, i.e. vibration side
To for example, the direction of vibration that horizontal polarization refers to electric wave is horizontally oriented, vertical polarization refers to that the direction of vibration of electric wave is vertical
Direction.
Referring to Fig. 1, a kind of method for transmitting signals provided in an embodiment of the present invention, this method includes：
S101, when receiving the signal of user equipment (UE), channel estimation is carried out to the signal of the UE, channel is obtained and estimates
Evaluation；
Wherein, the method for transmitting signals described in the embodiment of the present invention refers to that the antenna in base station carries out letter with UE antennas
When number transmission, when antenna for base station receives the signal of UE antennas transmission, the signal of the UE is subjected to channel estimation, obtains channel
Estimated value.
Specifically, when antenna for base station receives the signal of UE antennas transmission, the placement location of the UE antennas is not known,
Horizontal position and the vertical position of the UE antennas are not known exactly.So needing antenna for base station in the horizontal direction and vertical square to it
To be possible to carry out channel estimation.
Wherein, by where antenna for base station horizontal plane and vertical plane be respectively divided into n angular interval, obtain N number of angle
Interval combinations, wherein N is equal to square of n, and each angular interval combination includes the angular interval and a vertical plane of a horizontal plane
Angular interval combines each angular interval and carries out channel estimation.For example, being combined to i-th of angular interval, calculate when antenna is adopted
Channel estimation value when corresponding position receives signal is combined with i-th of angular interval：
HLS,i=r (k) s*(k)·(xsinαicosβi+ycosαi)
Wherein, HLS,iRepresent channel estimation value；
R (k) represents k-th of signal that the antenna receives UE；
s*(k) conjugate transposition that the antenna receives k-th of signal of UE is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
X represents the unit vector on third direction axis, and third direction axis is perpendicular to vertical plane；
Y represents the unit vector on second direction axis, and second direction axis refers to the axis perpendicular to horizontal plane.
S102, according to the channel estimation value, determine the adjusting parameter of aerial position；
Wherein, before determining the adjusting parameter of aerial position, it is also necessary to determine the current location of the antenna, and antenna
Current location, including：The vertical angle of the current horizontal sextant angle of antenna and antenna currently；Wherein, the current horizontal sextant angle of antenna
It is antenna in the projection of horizontal plane and the first angle of first direction axis, the current vertical angle of antenna is the antenna in vertical plane
Projection and second direction axis the second angle, and first direction axis is mutually perpendicular to second direction axis, first direction axle position in
On horizontal plane, second direction axle position is on vertical plane.
Specifically, referring to Fig. 2, first direction axis is Z axis in figure, and second direction axis is the Y-axis in figure, and the first angle is figure
In β angles, the second angle is the α angles in figure.
It should be noted that the method for determining the current location of the antenna in the embodiment of the present invention, is to apply a gravity
Inductive pick-up and a vibrating device, to measure the position of the antenna.Specifically, when antenna for base station starts in initial installation
Or restart when, automatic to activate vibrating device that the antenna generation of base station is made act, gravity sensor passes through moving for the antenna
Make, the horizontal and vertical angle of space coordinates where obtaining the antenna.Shown in Fig. 2, throwing of the antenna in horizontal plane
First angle β of shadow and first direction axis Z axis is the current level angle of the antenna, projection and the of the antenna in vertical plane
Second angle α of two axis of orientation Y-axis is the current vertical angles of the antenna.
Wherein, according to the channel estimation value, the adjusting parameter of aerial position is determined, including：Determine the present bit of antenna
It sets, according to the current location of the channel estimation value and antenna, determines the adjusting parameter of aerial position.
Specifically, obtained N number of channel estimation value is subjected to modulus respectively, by the maximum channel estimation value of obtained modulus value
The target level angle and target of the angular interval of corresponding horizontal plane and the angular interval of vertical plane respectively as tested rotating platform
Vertical angles；According to the current level angle and target level angle of antenna, the horizontal adjustment angle of antenna is determined；According to
The current vertical angles and target vertical angles of antenna, determine the vertical adjustment angle of antenna.Wherein, the horizontal of antenna is adjusted
The vertical adjusting parameter adjusted the angle as aerial position of whole angle and antenna, and horizontal adjustment angle can use θtargetIt indicates,
Vertical adjust the angle can be usedIt indicates.
S103, according to the adjusting parameter to the antenna carry out position adjustment, and using adjustment after antenna with it is described
UE carries out signal transmission.
Wherein, when carrying out position adjustment to the antenna according to the adjusting parameter, when the antenna receives multiple and different UE's
When signal, the different adjusting parameters for antenna can be determined according to different needs.Wherein, including it is several under several situations：
(1) in order to reduce losses of all difference UE in signals transmission when, the multiple difference UE can be calculated
The average value of the horizontal adjustment angle of corresponding antenna, by the average value eventually as the horizontal adjustment angle of the antenna；And
The average value adjusted the angle vertically for calculating the corresponding antennas of the multiple difference UE, by the average value eventually as the antenna
It is vertical to adjust the angle.
(2) sending or receiving damages of the most UE of signal in signals transmission to reduce all difference UE
Consumption, then will receive the horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals eventually as the water of the antenna
It is flat to adjust the angle；The vertical adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the day
The vertical adjustment angle of line.
Wherein, the method for judging to send or receive the most UE of signal, including：Base station can be by handling in uplink
When, it is standard by the throughput information of uplink UE is obtained, is judged.Certainly, it is used to judge to send or reception signal is most
UE method there are many kinds of, the embodiment of the present invention is not specifically limited.
(3) sending or receiving damages of the minimum UE of signal in signals transmission to reduce all difference UE
Consumption, then will receive the horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals eventually as the water of the antenna
It is flat to adjust the angle；The vertical adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the day
The vertical adjustment angle of line.
Wherein, the method for judging to send or receive the minimum UE of signal, including：Base station can be by handling in uplink
When, it is standard by block error rate BLER and/or the step-out information of uplink UE is obtained, is judged.Certainly, be used for judge send or
There are many kinds of the methods for receiving the minimum UE of signal, and the embodiment of the present invention is not specifically limited.
In the following, embodiment 1, is described in detail method for transmitting signals provided in an embodiment of the present invention.
Embodiment 1
Referring to Fig. 3, a kind of method for transmitting signals provided in an embodiment of the present invention, including step：
When S301, base station start, the current level angle of external antenna and vertical is obtained by gravity sensing sensor
Angle.
S302, base station obtain the optimisation strategy and parameter of channel estimation.
Wherein, the parameter of channel estimation includes：The horizontal plane of antenna and vertical plane be respectively divided into when channel estimation more
The n values of a angular interval, the cycle T of channel estimation.
Wherein, the calculating of channel estimation be as unit of cycle T, and the calculated value of channel estimation can using T as the period into
Row weighted average.
The optimisation strategy of channel estimation includes：Reduce losses of all difference UE in signals transmission, alternatively, reducing
All difference UE are sending or are receiving losses of the most UE of signal in signals transmission, alternatively, reducing all differences
UE is sending or is receiving losses of the minimum UE of signal in signals transmission.
Specifically, it when antenna receives the signal of multiple and different UE, needs to consider the different matched requirements of UE polarization not
Together, it is possible to have following optimisation strategy.
(1) in order to reduce losses of all difference UE in signals transmission when, the multiple difference UE can be calculated
The average value of the horizontal adjustment angle of corresponding antenna, by the average value eventually as the horizontal adjustment angle of the antenna；And
The average value adjusted the angle vertically for calculating the corresponding antennas of the multiple difference UE, by the average value eventually as the antenna
It is vertical to adjust the angle；
(2) sending or receiving damages of the most UE of signal in signals transmission to reduce all difference UE
Consumption, then will receive the horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals eventually as the water of the antenna
It is flat to adjust the angle；The vertical adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the day
The vertical adjustment angle of line.
(3) sending or receiving damages of the minimum UE of signal in signals transmission to reduce all difference UE
Consumption, then will receive the horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals eventually as the water of the antenna
It is flat to adjust the angle；The vertical adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the day
The vertical adjustment angle of line.
Whether S303, Antennaautoadjust switch op_switch open, if so, thening follow the steps S304, otherwise, execute
Step S309.
Wherein, Antennaautoadjust switch, the automatic tune that can choose whether to need to carry out antenna to base station
It is whole.
Whether S304, UE report mobility measurements, if so, S309 is thened follow the steps, it is no to then follow the steps S305.
Wherein, mobility measurements are for long term evolution (Long Term Evolution, LTE), to be primarily referred to as existing
EVENT A and EVENT the B events defined in 36.331 in communication protocol.After base station receives the event, to be cut
Change processing.
If antenna for base station is matched with UE antenna polarizations, and applied when channel communication condition is preferable, so
In view of indoor small base station applies range is mainly tens meters, only not having to give the correct time on any mobility measurements in UE makes
With.For example, when UE is in cell edge, poor signal is received, then can report mobility measurements.
S305, according to the parameter of the channel estimation determined in step S302, by the horizontal plane and vertical plane point where antenna
It is not divided into the n values of multiple angular intervals, forms N number of angular interval combination, and N=n altogether2.N number of angular interval is combined, is counted
It calculates when the combination of this angular interval is respectively adopted in antenna, corresponding position receives the channel estimation value when signal of the UE.
S306, judge whether to reach channel estimation period T, if so, S307 is thened follow the steps, it is no to then follow the steps
S305。
S307, in cycle time T, it is N number of by what is obtained according to the optimisation strategy of the channel estimation determined in step S302
Channel estimation value carries out modulus respectively, by the angular interval of the corresponding horizontal plane of the maximum channel estimation value of obtained modulus value and erects
Target level angle and target vertical angles of the angular interval faced directly respectively as tested rotating platform.
S308, the current level angle and target level angle according to antenna, determine the horizontal adjustment angle of antenna；
According to the current vertical angles and target vertical angles of antenna, the vertical adjustment angle of antenna is determined；According to determining water
Flat adjust the angle carries out position adjustment with vertical adjust the angle to the antenna.
S309, the antenna of base station and the UE carry out signal transmission.
Embodiment 2
The channel estimation methods described in the embodiment of the present invention are described in detail in embodiment 2.
Specifically, in the prior art there are many kinds of channel estimation methods, the embodiment of the present invention uses the algorithm of matched filtering
The calculating process of the channel estimation value is described in detail.
Referring to Fig. 4, it is assumed that the dual polarized antenna that base station cell is utilized with vertical plane angle is ± α is transmitted, UE antennas
It is assumed to be and is placed perpendicular to horizontal plane, and the angle of the UE antennas and horizontal plane is β.
Specifically, X-axis indicates that third direction axis horizontal reference direction, Y-axis indicate the vertical reference direction of second direction axis, Z
Axis indicates that third direction axis dual polarized antenna main beam reference direction, O points are the intersection point of X, Y and Z axis, and α indicates dual polarized antenna 1
The angle between projection and Y-axis on XOY plane, i.e., vertical angle, β indicate projection and Z axis of the UE incoming waves in XOZ planes
Angle, i.e. horizontal sextant angle.
For example, it is assumed that α=45 ° corresponding to the dual polarized antenna 1 ,-α=- 45 ° corresponding to dual polarized antenna 2.
When UE carries out sending detectable signal s (k) to antenna for base station using UE antennas, then the dual polarization of the α angles of base station
The detectable signal s (k) that the UE antennas that antenna 1 and the dual polarized antenna 2 of-α angles are respectively received are sent is respectively r1(k) and
r2(k).Then
r1(k)=s (k) (xsin α cos β+ycos α)
r2(k)=- s (k) (xsin α cos β+ycos α)
Wherein, x represents the unit vector in third direction axis X-axis；Y represents the unit vector in second direction axis Y-axis.
Antenna for base station is needed to the signal r received1(k) and r2(k) channel estimation is carried out, using believing in the prior art
Road estimation formulas, HLS=r1(k)·s*(k) channel estimation is carried out to the UE received on every antenna the signals sent.
When specific channel estimation, because antenna for base station does not know the modes of emplacement of terminal antenna, when channel estimation, needs
Horizontal plane where antenna for base station and all directions of vertical plane are subjected to channel estimation, wherein distinguish horizontal plane and vertical plane
It is divided into n angular interval, each angular region obtains N number of angular interval combination, wherein N is flat equal to n using δ as interval
Side, each angular interval combination include the angular interval of the angular interval and a vertical plane of a horizontal plane.Then to each angle
Interval combinations carry out channel estimation.Then i-th of angular interval is combined, is calculated when dual polarized antenna 1 uses i-th of angular area
Between combine channel estimation value when corresponding position receives signal：
HLS,i=r (k) s*(k)·(xsinαicosβi+ycosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition that the antenna receives k-th of signal of the UE is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
X represents the unit vector in X-axis；
Y represents the unit vector in Y-axis.
Then, the channel estimation value modulus that N number of angular interval combines is calculated, by the maximum channel of obtained modulus value
The target level angle of the angular interval of the corresponding horizontal plane of estimated value and the angular interval of vertical plane respectively as tested rotating platform
With target vertical angles；According to the current level angle of antenna and the target level angle, determine that the horizontal of antenna is adjusted
Whole angle；According to the current vertical angles of antenna and the target vertical angles, the vertical adjustment angle of antenna is determined.
For example, work as δ=15 °, then n=12, then N=144.I.e. when each angular region with 15 ° for interval, by horizontal plane
12 angular intervals are respectively divided into vertical plane, then obtain 144 angular interval combinations.Assuming that calculating second angular interval
It is combined as α=30 °, the channel estimation value of β=30 °, then channel estimation value of the dual polarized antenna 1 in second angle interval combinations
For：
HLS,2=r (k) s*(k)·(xsin30°cos30°+ycos30°)
Wherein, x represents the unit vector in X-axis, and y represents the unit vector j in Y-axis, and r (k) represents the antenna and receives
K-th of signal of the UE, s*(k) conjugate transposition that the antenna receives k-th of signal of the UE is represented.
Then to HLSModulus obtains abc (HLS,2)。
After combining modulus to 144 angular intervals, then more all modulus value determine that maximum angular area of modulus value
Between combine to horizontal plane angular interval and vertical plane angular interval.For example, working as α when calculating2=30 °, β2=
At 30 °, corresponding channel estimation modulus value is maximum, then when the dual polarized antenna of the base station 1 and the UE carry out signal transmission, the base
Angle between projection and Y-axis of the dual polarized antenna 1 stood on XOY plane should be 30 °, the projection in XOZ planes and Z
The angle of axis should be 30 °.
Also, using modulus value maximum that angular interval combination exist as the antenna to the angular interval for the horizontal plane used
Target adjustment value on horizontal plane, angular interval combination to the angular interval of the vertical plane used as the antenna on vertical plane
Target adjustment value, wherein the target adjustment value θ on horizontal planet arg etIt indicates, the target adjustment value on vertical plane is usedIt indicates.Then θt arg et=β i,Work as αi=30 °, βiAngular interval combination modulus value corresponding to=30 ° is most
Greatly, then θt arg et=30 °,
Wherein, because it is known that the angle of the current position of dual polarized antenna 1, i.e. dual polarized antenna 1 and vertical plane be α=
45 °, dual polarized antenna 1 and the angle of horizontal plane are β=90 °；Again because of the target adjustment value θ on horizontal planet arg et=30 °,
Target adjustment value on vertical planeSo the adjusting parameter of the dual polarized antenna 1 is：Horizontal plane needs to adjust
Angle is 60 ° (90 ° -30 °=60 °), and it is 15 ° (45 ° -30 °=15 °) that vertical plane, which needs to adjust the angle,.
Similarly, the adjusting parameter calculating process phase of the adjusting parameter calculating process of dual polarized antenna 2 and dual polarized antenna 1
Together, details are not described herein again.
Embodiment 2 is described in detail base station and is estimated the signaling channel of the UE received using matched filtering, certainly, existing
Have many channel estimation methods in technology, the embodiment of the present invention only with matched filtering for example, if using other algorithms,
The algorithm that the effect can equally be reached, belongs to the scope of the present invention.
It should be noted that because base station correspond to more antennas, when carrying out channel estimation, can and meanwhile to mostly with
Antenna carries out channel estimation.
Referring to Fig. 5, a kind of signal transmitting apparatus provided in an embodiment of the present invention, which includes：
Channel estimating unit 51, for when receiving the signal of user equipment (UE), channel to be carried out to the signal of the UE
Estimation, obtains channel estimation value；
Determination unit 52, for according to the channel estimation value, determining the adjusting parameter of aerial position；
Adjustment unit 53, for carrying out position adjustment to the antenna according to the adjusting parameter, and utilizing after adjusting
Antenna carries out signal transmission with the UE.
Preferably, the determination unit 52 is specifically used for：
The current location for determining antenna determines aerial position according to the current location of the channel estimation value and antenna
Adjusting parameter.
Preferably, the current location of the antenna, including：The vertical folder of the current horizontal sextant angle of antenna and antenna currently
Angle；Wherein, the current horizontal sextant angle of antenna be antenna in the projection of horizontal plane and the first angle of first direction axis, antenna is current
Vertical angle be the antenna in the projection of vertical plane and the second angle of second direction axis, and first direction axis and second direction
Axis is mutually perpendicular to, and first direction axle position is on horizontal plane, and second direction axle position is on vertical plane.
Preferably, the channel estimating unit 51, carries out channel estimation in the signal to the UE, obtains channel estimation value
When, it is specifically used for：
The horizontal plane and the vertical plane are respectively divided into n angular interval, obtain N number of angular interval combination,
In, N is equal to square of n, and each angular interval combination includes the angular interval of the angular interval and a vertical plane of a horizontal plane, right
I-th of angular interval combination, calculates the channel when antenna combines corresponding position reception signal using i-th of angular interval
Estimated value：
HLS,i=r (k) s*(k)·(xsinαicosβi+ycosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition that the antenna receives k-th of signal of the UE is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
Y represents the unit vector on second direction axis；
X represents the unit vector on third direction axis.
Preferably, the determination unit 52 determines day in the current location according to the channel estimation value and antenna
When the adjusting parameter of line position, it is specifically used for：
Obtained N number of channel estimation value is subjected to modulus respectively, the maximum channel estimation value of obtained modulus value is corresponding
The target level angle and target vertical angle of the angular interval of horizontal plane and the angular interval of vertical plane respectively as tested rotating platform
Degree；
According to the current level angle of antenna and the target level angle, the horizontal adjustment angle of antenna is determined；
According to the current vertical angles of antenna and the target vertical angles, the vertical adjustment angle of antenna is determined.
Preferably, when receiving the signal of multiple and different UE, the determination unit 52 is additionally operable to：
The average value for calculating the horizontal adjustment angle of the corresponding antennas of the multiple difference UE, by the average value eventually as
The horizontal adjustment angle of the antenna；
And the average value of the corresponding antennas of the multiple difference UE adjusted the angle vertically is calculated, most by the average value
Vertical adjustment angle as the antenna eventually；
Alternatively,
The horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle；
Alternatively,
The horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Horizontal adjustment angle；
The vertical adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the antenna
Vertical adjustment angle.
Channel estimating unit 51, determination unit 52, adjustment unit 53 can be by entity apparatus such as processor and transceivers
It realizes.
In conclusion a kind of method for transmitting signals provided in an embodiment of the present invention, including, first when antenna for base station receives
When the signal of user equipment (UE), channel estimation is carried out to the signal of the UE, channel estimation value is obtained, then according to all channels
Estimated value determines the adjusting parameter of aerial position, finally carries out position adjustment, and profit to the antenna according to the adjusting parameter
With the antenna after adjustment signal transmission is carried out with the UE.To realize that the antenna in base station is carrying out signal transmission with UE antennas
When, pass through the adjustment of base station antenna positions so that the polarization direction of antenna for base station is matched with the polarization direction of UE antennas, to subtract
Loss in small signal transmission.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or sequence production of having the records of distance by the log
Product.Therefore, complete hardware embodiment, complete software embodiment or implementation combining software and hardware aspects can be used in the present invention
The form of example.Moreover, can be used can in the computer that one or more wherein includes computer usable program code by the present invention
With the form for the computer program product implemented on storage medium (including but not limited to magnetic disk storage and optical memory etc.).
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
Instruct the processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of method for transmitting signals, which is characterized in that this method includes：
When receiving the signal of user equipment (UE), channel estimation is carried out to the signal of the UE, obtains channel estimation value；
According to the channel estimation value, the adjusting parameter of aerial position is determined；
Position adjustment is carried out to the antenna according to the adjusting parameter, and signal is carried out with the UE using the antenna after adjustment
Transmission；
Wherein, channel estimation is carried out to the signal of the UE, obtains channel estimation value, including：
By where antenna horizontal plane and vertical plane be respectively divided into n angular interval, obtain the combination of N number of angular interval, wherein
N is equal to square of n, and each angular interval combination includes the angular interval of the angular interval and a vertical plane of a horizontal plane, to i-th
A angular interval combination calculates the channel when antenna combines corresponding position reception signal using i-th of angular interval and estimates
Evaluation：
HLS,i=r (k) s*(k)·(x sinαicosβi+y cosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition for k-th of signal that the UE is sent is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
Y represents the unit vector on second direction axis, and the second direction axle position is in vertical plane；
X represents the unit vector on third direction axis, and the third direction axis is perpendicular to vertical plane.
2. according to the method described in claim 1, it is characterized in that, according to the channel estimation value, the tune of aerial position is determined
Whole parameter, including：
The current location for determining antenna determines the tune of aerial position according to the current location of the channel estimation value and antenna
Whole parameter.
3. according to the method described in claim 2, it is characterized in that, the current location of the antenna, including：The current water of antenna
The vertical angle of flat angle and antenna currently；
Wherein, the current horizontal sextant angle of antenna be antenna in the projection of horizontal plane and the first angle of first direction axis, antenna is worked as
Preceding vertical angle is the antenna in the projection of vertical plane and the second angle of second direction axis, and first direction axis and second party
It is mutually perpendicular to axis, first direction axle position is on horizontal plane.
4. according to the method described in claim 3, it is characterized in that, according to the present bit of the channel estimation value and antenna
It sets, determines that the adjusting parameter of aerial position includes：
Obtained N number of channel estimation value is subjected to modulus respectively, by the corresponding level of the maximum channel estimation value of obtained modulus value
The target level angle and target vertical angles of the angular interval in face and the angular interval of vertical plane respectively as tested rotating platform；
According to the current level angle of antenna and the target level angle, the horizontal adjustment angle of antenna is determined；According to
The current vertical angles of antenna and the target vertical angles, determine the vertical adjustment angle of antenna.
5. according to the method described in claim 4, it is characterized in that, when receiving the signal of multiple and different UE, this method is also
Including：
The average value for calculating the horizontal adjustment angle of the corresponding antennas of the multiple difference UE, by the average value eventually as the day
The horizontal adjustment angle of line；
And the average value of the corresponding antennas of the multiple difference UE adjusted the angle vertically is calculated, which is finally made
For the vertical adjustment angle of the antenna；
Alternatively,
The horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the water of the antenna
It is flat to adjust the angle；
The vertical of the most corresponding antennas of UE of multiple and different UE signals will be received to adjust the angle eventually as the perpendicular of the antenna
It is straight to adjust the angle；
Alternatively,
The horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the water of the antenna
It is flat to adjust the angle；
The vertical of the minimum corresponding antennas of UE of multiple and different UE signals will be received to adjust the angle eventually as the perpendicular of the antenna
It is straight to adjust the angle.
6. a kind of signal transmitting apparatus, which is characterized in that the device includes：
Channel estimating unit, for when receiving the signal of user equipment (UE), carrying out channel estimation to the signal of the UE, obtaining
To channel estimation value；
Determination unit, for according to the channel estimation value, determining the adjusting parameter of aerial position；
Adjustment unit, for according to the adjusting parameter to the antenna carry out position adjustment, and using adjustment after antenna with
The UE carries out signal transmission；
Wherein, the channel estimating unit carries out channel estimation, when obtaining channel estimation value, specifically in the signal to the UE
For：
Horizontal plane where antenna and vertical plane are respectively divided into n angular interval, obtain N number of angular interval combination, wherein N
Square equal to n, each angular interval combination includes the angular interval of the angular interval and a vertical plane of a horizontal plane, to i-th
A angular interval combination calculates the channel when antenna combines corresponding position reception signal using i-th of angular interval and estimates
Evaluation：
HLS,i=r (k) s*(k)·(x sinαicosβi+y cosαi)
Wherein, HLS,iRepresent the channel estimation value of i-th of angular interval combination；
R (k) represents k-th of signal that the antenna receives the UE；
s*(k) conjugate transposition for k-th of signal that the UE is sent is represented；
αiRepresent the angle of vertical plane in i-th of angular interval combination；
βiRepresent the angle of horizontal plane in i-th of angular interval combination；
Y represents the unit vector on second direction axis, and the second direction axle position is in vertical plane；
X represents the unit vector on third direction axis, and the third direction axis is perpendicular to vertical plane.
7. device according to claim 6, which is characterized in that the determination unit is specifically used for：
The current location for determining antenna determines the tune of aerial position according to the current location of the channel estimation value and antenna
Whole parameter.
8. device according to claim 7, which is characterized in that the current location of the antenna, including：The current water of antenna
The vertical angle of flat angle and antenna currently；
Wherein, the current horizontal sextant angle of antenna be antenna in the projection of horizontal plane and the first angle of first direction axis, antenna is worked as
Preceding vertical angle is the antenna in the projection of vertical plane and the second angle of second direction axis, and first direction axis and second party
It is mutually perpendicular to axis, first direction axle position is on horizontal plane.
9. device according to claim 8, which is characterized in that the determination unit, according to the channel estimation value, with
And the current location of antenna is specifically used for when determining the adjusting parameter of aerial position：
Obtained N number of channel estimation value is subjected to modulus respectively, by the corresponding level of the maximum channel estimation value of obtained modulus value
The target level angle and target vertical angles of the angular interval in face and the angular interval of vertical plane respectively as tested rotating platform；
According to the current level angle of antenna and the target level angle, the horizontal adjustment angle of antenna is determined；According to
The current vertical angles of antenna and the target vertical angles, determine the vertical adjustment angle of antenna.
10. device according to claim 9, which is characterized in that when receiving the signal of multiple and different UE, the determination
Unit is additionally operable to：
The average value for calculating the horizontal adjustment angle of the corresponding antennas of the multiple difference UE, by the average value eventually as the day
The horizontal adjustment angle of line；
And the average value of the corresponding antennas of the multiple difference UE adjusted the angle vertically is calculated, which is finally made
For the vertical adjustment angle of the antenna；
Alternatively,
The horizontal adjustment angle of the most corresponding antennas of UE of multiple and different UE signals will be received eventually as the water of the antenna
It is flat to adjust the angle；
The vertical of the most corresponding antennas of UE of multiple and different UE signals will be received to adjust the angle eventually as the perpendicular of the antenna
It is straight to adjust the angle；
Alternatively,
The horizontal adjustment angle of the minimum corresponding antennas of UE of multiple and different UE signals will be received eventually as the water of the antenna
It is flat to adjust the angle；
The vertical of the minimum corresponding antennas of UE of multiple and different UE signals will be received to adjust the angle eventually as the perpendicular of the antenna
It is straight to adjust the angle.
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| CN101771197A (en) * | 2008-12-29 | 2010-07-07 | 中兴通讯股份有限公司 | Method for determining order of cables and device therefor |
| CN101916908A (en) * | 2010-08-04 | 2010-12-15 | 中国人民解放军第二炮兵工程学院 | Electronic-control variable polarization system and method of moving communication panel antenna |
| CN102572861A (en) * | 2011-12-13 | 2012-07-11 | 北京邮电大学 | Polarization-diversity-gain-optimization-based polarization variation method for base station |
| US8306479B1 (en) * | 2012-07-06 | 2012-11-06 | Metropcs Wireless, Inc. | Polarization control for cell telecommunication system |
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| CN101771197A (en) * | 2008-12-29 | 2010-07-07 | 中兴通讯股份有限公司 | Method for determining order of cables and device therefor |
| CN101916908A (en) * | 2010-08-04 | 2010-12-15 | 中国人民解放军第二炮兵工程学院 | Electronic-control variable polarization system and method of moving communication panel antenna |
| CN102572861A (en) * | 2011-12-13 | 2012-07-11 | 北京邮电大学 | Polarization-diversity-gain-optimization-based polarization variation method for base station |
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