CN102325328A - Service beamforming method and equipment - Google Patents
Service beamforming method and equipment Download PDFInfo
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- CN102325328A CN102325328A CN201110329111A CN201110329111A CN102325328A CN 102325328 A CN102325328 A CN 102325328A CN 201110329111 A CN201110329111 A CN 201110329111A CN 201110329111 A CN201110329111 A CN 201110329111A CN 102325328 A CN102325328 A CN 102325328A
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Abstract
The embodiment of the invention discloses a service beamforming method and service beamforming equipment. By the technical scheme provided by the embodiment of the invention, a downlink beamforming coefficient corresponding to terminal equipment is determined according to a spatial windowing beamforming coefficient of each antenna obtained by performing spatial windowing beamforming processing on a beamforming coefficient of each antenna corresponding to the terminal equipment, and beamforming processing is performed on the downlink data of the terminal equipment according to the downlink beamforming coefficient, thereby reducing a minor lobe level under the condition of slightly increasing a beam width, and reducing the interference of the service data transmission of the current terminal equipment in other terminal equipment beyond own beam width.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of professional shaping method and equipment.
Background technology
In TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the TD SDMA) system/the identical carrier frequency point of descending employing, on/down channel has symmetry.
Existing scheme is come the downlink business figuration through estimating up arrival bearing, and the schematic flow sheet of concrete figuration processing procedure is as shown in Figure 1, specifically may further comprise the steps:
Step S101, the training sequence through the user calculate its uplink channel estimation.
Step S102, through the result of channel estimating, calculate its this user's cross-correlation matrix Rxx.
Step S103, this user's cross-correlation matrix Rxx handled obtain following coefficient:
AF=[a
1，a
2，a
3，……，a
N]；
Wherein, a
i(i=1,2,3 ..., the N) coefficient of i antenna of sign.
In concrete processing scene, the specific algorithm that obtains above-mentioned coefficient comprises the beam scanning method, i.e. GOB (Grid Of Beam; Fixed beam figuration algorithm); Perhaps characteristic vector method, i.e. EBB (Eigenvalue Based Beamforming, feature decomposition figuration algorithm).
Step S104, confirm this user's down beam shaping coefficient.
Concrete, in step S103, obtain above-mentioned coefficient after, corresponding coefficient is carried out amplitude normalization handles, obtain this user's down beam shaping coefficient:
Use its down beam shaping coefficient that calculates to carry out figuration and transmission in the transmission of step S105, this user downlink data.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:
Because the intelligent antenna array bore is limited, cause its minor level in the process of using existing method higher, thereby, bigger to the outer user's of this user wave beam width interference.
Summary of the invention
The embodiment of the invention provides a kind of professional shaping method and equipment, solves in the existing professional figuration scheme because minor level is too high, causes other outer users of user wave beam width are existed the problem of larger interference.
For achieving the above object, the embodiment of the invention provides a kind of professional shaping method on the one hand, may further comprise the steps at least:
The network equipment is confirmed the forming coefficient of pairing each antenna of said terminal equipment according to the uplink channel information of terminal equipment;
The said network equipment carries out space windowing figuration to the forming coefficient of said each antenna to be handled, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment;
The said network equipment is confirmed the pairing down beam shaping coefficient of said terminal equipment according to the space windowing forming coefficient of said each antenna;
The said network equipment is handled the pairing downlink data of said terminal equipment according to said down beam shaping coefficient, and the downlink data after will handling sends to said terminal equipment.
On the other hand, the embodiment of the invention also provides a kind of network equipment, comprises at least:
First determination module is used for the uplink channel information according to terminal equipment, confirms the forming coefficient of pairing each antenna of said terminal equipment;
Processing module is used for that the forming coefficient of determined each antenna of said first determination module is carried out space windowing figuration and handles, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment;
Second determination module is used for the space windowing forming coefficient according to resulting each antenna of said processing module, confirms the pairing down beam shaping coefficient of said terminal equipment;
The figuration module be used for according to the determined down beam shaping coefficient of said second determination module pairing downlink data of said terminal equipment being handled, and the downlink data after will handling sends to said terminal equipment.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme of the embodiment of the invention; Handle the space windowing forming coefficient of resultant each antenna according to the forming coefficient of pairing each antenna of terminal equipment being carried out space windowing figuration; Confirm the pairing down beam shaping coefficient of terminal equipment; And according to this down beam shaping coefficient the downlink data of this terminal equipment is carried out figuration and handle, thereby, under a small amount of situation that increases beamwidth; Reduce minor level, and reduce of the interference of the business data transmission of current terminal equipment self beamwidth other-end equipment outward.
Description of drawings
Fig. 1 is the schematic flow sheet of concrete figuration processing procedure of the prior art;
Fig. 2 is the schematic flow sheet of a kind of professional shaping method that the embodiment of the invention proposed;
Fig. 3 is the schematic flow sheet of the professional shaping method in a kind of concrete scene that the embodiment of the invention proposed;
Fig. 4 is the structural representation of a kind of network equipment of embodiment of the invention proposition.
Embodiment
Of background technology, TD-SCDMA GSM outdoor scene often adopts smart antenna, and professional figuration is the characteristic feature of smart antenna; Professional figuration can bring figuration gain and reduce the interference between the outer user of beamwidth, but traditional figuration technology is because the restriction of intelligent antenna array bore causes the outer user's of beamwidth influence still stronger.
In order to overcome such defective, the embodiment of the invention has proposed a kind of professional shaping method, through the space windowing process, increases the descending beamwidth of user slightly, but has reduced the level value outside the wave beam broadband, will reduce the interference level between the user greatly generally.
As shown in Figure 2, be the schematic flow sheet of a kind of professional shaping method that the embodiment of the invention proposed, this method specifically may further comprise the steps:
Step S201, the network equipment confirm the forming coefficient of pairing each antenna of said terminal equipment according to the uplink channel information of terminal equipment.
In concrete processing scene, the processing procedure of this step specifically comprises:
The said network equipment is confirmed the uplink channel estimation result of said terminal equipment through the training sequence of said terminal equipment;
The said network equipment is confirmed the cross-correlation matrix of said terminal equipment through said uplink channel estimation result;
Said cross-correlation matrix is carried out beam scanning to the said network equipment or characteristic vector is decomposed, and confirms the forming coefficient of pairing each antenna of said terminal equipment.
The above processing procedure and the handling procedure of existing processing procedure are similar, therefore, for pairing device of this section processes and flow setting, can keep present situation, do not adjust.
Step S202, the said network equipment carry out space windowing figuration to the forming coefficient of said each antenna to be handled, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment.
In concrete processing scene, the processing procedure of this step comprises following processing mode at least:
The said network equipment multiply by the pairing space windowing of each antenna parameter with the forming coefficient of said each antenna respectively, obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment.
Concrete, when the forming coefficient of said each antenna is specially:
AF=[a
1, a
2, a
3..., a
N], the said pairing space windowing of each antenna parameter is specially:
WIn=[w
1, w
2, w
3..., w
N] time, the space windowing forming coefficient of pairing each antenna of the determined said terminal equipment of the said network equipment is specially
AF Win=[b
1, b
2, b
3..., b
N].
Wherein, b
i=w
i* a
i, i=1,2,3 ..., N; a
iThe forming coefficient of representing i antenna, w
iThe space windowing parameter of representing i antenna, b
iThe space windowing forming coefficient of representing i antenna.
Step S203, the said network equipment confirm the pairing down beam shaping coefficient of said terminal equipment according to the space windowing forming coefficient of said each antenna.
In concrete processing scene, the processing procedure of this step comprises following processing mode at least:
The said network equipment carries out amplitude normalization to the space windowing forming coefficient of said each antenna to be handled, and confirms the pairing down beam shaping coefficient of said terminal equipment.
Concrete, with reference to the result among the step S202, the result in this step is specific as follows:
When windowing forming coefficient in the space of said each antenna is specially
AF Win=[b
1, b
2, b
3..., b
N] time, the pairing down beam shaping coefficient of the determined said terminal equipment of the said network equipment is specially:
。
Step S204, the said network equipment are handled the pairing downlink data of said terminal equipment according to said down beam shaping coefficient, and the downlink data after will handling sends to said terminal equipment.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme of the embodiment of the invention; Handle the space windowing forming coefficient of resultant each antenna according to the forming coefficient of pairing each antenna of terminal equipment being carried out space windowing figuration; Confirm the pairing down beam shaping coefficient of terminal equipment; And according to this down beam shaping coefficient the downlink data of this terminal equipment is carried out figuration and handle, thereby, under a small amount of situation that increases beamwidth; Reduce minor level, and reduce of the interference of the business data transmission of current terminal equipment self beamwidth other-end equipment outward.
Below, the application scenarios in conjunction with concrete describes the technical scheme that the embodiment of the invention proposed.
In the technical scheme that the embodiment of the invention proposed; Than existing processing scheme; Maximum difference is that carrying out space windowing figuration for the figuration parameter handles, and is concrete, and adopting space windowing figuration technology is exactly on the basis of the figuration parameter on existing each antenna that obtains, to multiply by a windowing forming coefficient; The purpose that is multiplied by this windowing forming coefficient is to reduce the outer level value of beamwidth, thereby reduces the interference of the transfer of data of current terminal equipment to other terminal equipment.
As shown in Figure 3, be the schematic flow sheet of the professional shaping method under a kind of concrete application scenarios that the embodiment of the invention proposed, this method specifically may further comprise the steps:
Step S301, the training sequence through the user calculate its uplink channel estimation.
Step S302, through the result of channel estimating, calculate its this user's cross-correlation matrix Rxx.
Step S303, this user's cross-correlation matrix Rxx is handled, obtain forming coefficient.
Concrete, resulting forming coefficient does
AF=[a
1, a
2, a
3..., a
N];
Wherein, a
i(i=1,2,3 ..., the N) coefficient of i antenna of sign.
In concrete processing scene, the specific algorithm that obtains above-mentioned coefficient comprises the beam scanning method, i.e. GOB algorithm, perhaps characteristic vector method, i.e. EBB algorithm.
Concrete which algorithm that adopts can be set according to actual needs, and such variation does not influence protection scope of the present invention.
Step S304, forming coefficient is carried out the space windowing process, obtain space windowing forming coefficient.
In order to realize this step, the space windowing parameter that each antenna at first need be set is following:
Win=[w
1，w
2，w
3，……，w
N]。
Wherein, w
iThe space windowing parameter of representing i antenna, i=1,2,3 ..., N.
Then, with resulting forming coefficient among the step S303
AF=[a
1, a
2, a
3..., a
N] carry out the windowing figuration and handle, promptly respectively with the forming coefficient a of each antenna
iMultiply by the space windowing parameter w of each antenna respectively
i, obtain the space windowing forming coefficient of each antenna:
AF Win=[b
1，b
2，b
3，……，b
N]；
Wherein, b
iThe space windowing forming coefficient of representing i antenna.
b
i=w
i×a
i，i=1，2，3，……，N。
Step S305, windowing forming coefficient in space is carried out amplitude normalization, obtain this user's down beam shaping coefficient.
Concrete, according to The above results, resulting user's down beam shaping coefficient is:
。
Step S306, carrying out to this user in the process that downlink data sends, the down beam shaping coefficient through this user carries out figuration to the corresponding downstream data to be handled, and the downlink data after will handling sends to this user.
Further; The space windowing figuration technology that the embodiment of the invention proposed is applicable to the 4th third-generation mobile communication TD-LTE (Time Division-Long Term Evolution too; The Long Term Evolution of time-division) figuration, this belongs to protection scope of the present invention equally.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme of the embodiment of the invention; Handle the space windowing forming coefficient of resultant each antenna according to the forming coefficient of pairing each antenna of terminal equipment being carried out space windowing figuration; Confirm the pairing down beam shaping coefficient of terminal equipment; And according to this down beam shaping coefficient the downlink data of this terminal equipment is carried out figuration and handle, thereby, under a small amount of situation that increases beamwidth; Reduce minor level, and reduce of the interference of the business data transmission of current terminal equipment self beamwidth other-end equipment outward.
In order to realize the technical scheme of the embodiment of the invention, the embodiment of the invention also provides a kind of base station, and its structural representation is as shown in Figure 4, comprises at least:
Processing module 42 is used for that the forming coefficient of said first determination module, 41 determined each antenna is carried out space windowing figuration and handles, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment;
Wherein, said first determination module 41 specifically comprises:
Matrix is confirmed submodule 412, is used for confirming the cross-correlation matrix of said terminal equipment through said estimation submodule 411 determined uplink channel estimation results;
Coefficient is confirmed submodule 413, is used for said matrix is confirmed that submodule 412 determined cross-correlation matrixs carry out beam scanning or characteristic vector is decomposed, and confirms the forming coefficient of pairing each antenna of said terminal equipment.
It is to be noted; Processing and existing processing scheme that three above-mentioned sub-module are carried out are similar; Therefore, the deployment of three above-mentioned sub-module can be abideed by the prior art scheme and realize, the difference of the concrete title or the form of expression can't influence protection scope of the present invention.
On the other hand; Said processing module 42; Specifically be used for respectively the forming coefficient of said first determination module, 41 determined each antenna multiply by the pairing space windowing of each antenna parameter, obtain the space windowing forming coefficient of pairing each antenna of said terminal equipment.
Further, said second determination module 43 is used for that specifically the space windowing forming coefficient of said processing module 42 resulting each antenna is carried out amplitude normalization and handles, and confirms the pairing down beam shaping coefficient of said terminal equipment.
Compared with prior art, the technical scheme that the embodiment of the invention proposed has the following advantages:
Through using the technical scheme of the embodiment of the invention; Handle the space windowing forming coefficient of resultant each antenna according to the forming coefficient of pairing each antenna of terminal equipment being carried out space windowing figuration; Confirm the pairing down beam shaping coefficient of terminal equipment; And according to this down beam shaping coefficient the downlink data of this terminal equipment is carried out figuration and handle, thereby, under a small amount of situation that increases beamwidth; Reduce minor level, and reduce of the interference of the business data transmission of current terminal equipment self beamwidth other-end equipment outward.
Through the description of above execution mode, those skilled in the art can be well understood to the embodiment of the invention and can realize through hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding; The technical scheme of the embodiment of the invention can be come out with the embodied of software product, this software product can be stored in a non-volatile memory medium (can be CD-ROM, USB flash disk; Portable hard drive etc.) in; Comprise some instructions with so that computer equipment (can be personal computer, server, or network equipment etc.) each implements the described method of scene to carry out the embodiment of the invention.
It will be appreciated by those skilled in the art that accompanying drawing is a preferred sketch map of implementing scene, module in the accompanying drawing or flow process might not be that embodiment of the present invention embodiment is necessary.
It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of implementing scene just to description.
More than the disclosed several practical implementation scenes that are merely the embodiment of the invention, still, the embodiment of the invention is not limited thereto, any those skilled in the art can think variation all should fall into the traffic limits scope of the embodiment of the invention.
Claims (10)
1.
A kind of professional shaping method is characterized in that, may further comprise the steps at least:
The network equipment is confirmed the forming coefficient of pairing each antenna of said terminal equipment according to the uplink channel information of terminal equipment;
The said network equipment carries out space windowing figuration to the forming coefficient of said each antenna to be handled, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment;
The said network equipment is confirmed the pairing down beam shaping coefficient of said terminal equipment according to the space windowing forming coefficient of said each antenna;
the said network equipment is handled the pairing downlink data of said terminal equipment according to said down beam shaping coefficient, and the downlink data after will handling sends to said terminal equipment.
2.
The method of claim 1 is characterized in that, the said network equipment is confirmed the forming coefficient of pairing each antenna of said terminal equipment according to the uplink channel information of terminal equipment, specifically comprises:
The said network equipment is confirmed the uplink channel estimation result of said terminal equipment through the training sequence of said terminal equipment;
The said network equipment is confirmed the cross-correlation matrix of said terminal equipment through said uplink channel estimation result;
Said cross-correlation matrix is carried out beam scanning to
said network equipment or characteristic vector is decomposed, and confirms the forming coefficient of pairing each antenna of said terminal equipment.
3.
The method of claim 1 is characterized in that, the said network equipment carries out space windowing figuration to the forming coefficient of said each antenna to be handled, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment, specifically comprises:
said network equipment multiply by the pairing space windowing of each antenna parameter with the forming coefficient of said each antenna respectively, obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment.
4.
Method as claimed in claim 3 is characterized in that,
When the forming coefficient of said each antenna is specially: AF=[a1, a2, a3 ... AN], the said pairing space windowing of each antenna parameter is specially: Win=[w1, w2, w3;, wN] time, the space windowing forming coefficient of pairing each antenna of the determined said terminal equipment of the said network equipment is specially AFWin=[b1, b2; B3 ..., bN];
wherein, bi=wi * ai, i=1,2,3 ..., N.
5.
The method of claim 1 is characterized in that, the said network equipment is confirmed the pairing down beam shaping coefficient of said terminal equipment according to the space windowing forming coefficient of said each antenna, specifically comprises:
said network equipment carries out amplitude normalization to the space windowing forming coefficient of said each antenna to be handled, and confirms the pairing down beam shaping coefficient of said terminal equipment.
6.
Method as claimed in claim 5 is characterized in that,
When the space of said each antenna windowing forming coefficient be specially AFWin=[b1, b2, b3 ..., bN] time, the pairing down beam shaping coefficient of the determined said terminal equipment of the said network equipment is specially:
7.
A kind of network equipment is characterized in that, comprises at least:
First determination module is used for the uplink channel information according to terminal equipment, confirms the forming coefficient of pairing each antenna of said terminal equipment;
Processing module is used for that the forming coefficient of determined each antenna of said first determination module is carried out space windowing figuration and handles, and obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment;
Second determination module is used for the space windowing forming coefficient according to resulting each antenna of said processing module, confirms the pairing down beam shaping coefficient of said terminal equipment;
figuration module be used for according to the determined down beam shaping coefficient of said second determination module pairing downlink data of said terminal equipment being handled, and the downlink data after will handling sends to said terminal equipment.
8.
The network equipment as claimed in claim 7 is characterized in that, said first determination module specifically comprises:
Estimate submodule, be used for confirming the uplink channel estimation result of said terminal equipment through the training sequence of said terminal equipment;
Matrix is confirmed submodule, is used for confirming the cross-correlation matrix of said terminal equipment through the determined uplink channel estimation result of said estimation submodule;
coefficient is confirmed submodule, is used for said matrix is confirmed that the determined cross-correlation matrix of submodule carries out beam scanning or characteristic vector is decomposed, and confirms the forming coefficient of pairing each antenna of said terminal equipment.
9.
The network equipment as claimed in claim 7 is characterized in that, said processing module specifically is used for:
The pairing space windowing of each antenna parameter multiply by with the forming coefficient of determined each antenna of said first determination module respectively in
, obtains the space windowing forming coefficient of pairing each antenna of said terminal equipment.
10.
The network equipment as claimed in claim 7 is characterized in that, said second determination module specifically is used for:
The amplitude normalization processing is carried out to the space windowing forming coefficient of resulting each antenna of said processing module in
, confirms the pairing down beam shaping coefficient of said terminal equipment.
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|---|---|---|---|
| CN201110329111A CN102325328A (en) | 2011-10-26 | 2011-10-26 | Service beamforming method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110329111A CN102325328A (en) | 2011-10-26 | 2011-10-26 | Service beamforming method and equipment |
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| CN102325328A true CN102325328A (en) | 2012-01-18 |
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ID=45452984
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917554A (en) * | 2014-03-10 | 2015-09-16 | 华为技术有限公司 | Base station and beam forming method |
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| CN1404665A (en) * | 2000-03-01 | 2003-03-19 | 诺基亚公司 | Method including a radio transmitter for improving radio link operation |
| CN101321008A (en) * | 2007-06-07 | 2008-12-10 | 中兴通讯股份有限公司 | Descending beam forming emission method and device |
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Application publication date: 20120118 |