CN103763014B - New wave beam forming implementation method based on antenna system - Google Patents
New wave beam forming implementation method based on antenna system Download PDFInfo
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- CN103763014B CN103763014B CN201410005302.8A CN201410005302A CN103763014B CN 103763014 B CN103763014 B CN 103763014B CN 201410005302 A CN201410005302 A CN 201410005302A CN 103763014 B CN103763014 B CN 103763014B
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Abstract
The new beam form-endowing method based on antenna system that the present invention is provided, including step：Step one, the different Downtilt of correspondence, each sector is divided into apart from the different coverage in base station；Step 2, each sector determines the activation coverage of oneself by way of rotation, and other cells confirm the activation coverage of its correspondence sector fully according to identical rule；Service user is chosen from its activation coverage in step 3, each sector；Step 4, for the user being selected in step 3, carries out data transmission.The present invention can realize the decoupling that angle of declination selection and user select, and be that multi-cell cooperating can be achieved without backstage expense, realize the reasonable utilization of vertical dimension space resource, improve system covering, lifting system capacity.
Description
Technical field
It is specifically that one kind is based on antenna system (AAS, Active Antenna the present invention relates to wireless communication field
System the implementation method of new wave beam forming).
Background technology
AAS refers to the base station equipped with particular antenna array system, and the aerial array can realize dynamic adjustment radiation mode
Formula.Difference maximum with traditional antenna AAS is the interactive mode of aerial array and transceiver module, and Fig. 1 gives AAS base stations
Abstract logic is represented.
As shown in figure 1, AAS mainly includes three functional modules, be respectively Transmit-Receive Unit array (TRXUA,
Transceiver Unit Array), radio frequency distribution network (RDN, Radio Distribution Network) and passive
Aerial array (Antenna Array).By taking BS transmission signals as an example, TRXUA receives BS baseband signal, and output radiofrequency signal is arrived
Each road radiofrequency signal is mapped to passive antenna array by RDN, RDN according to specific rule, and the mapping ruler can be one-to-one
Or it is one-to-many.A corresponding antenna port (Antenna Port) per radiofrequency signal all the way for TRXUA outputs,
And each antenna port can be first (Passive Antenna Element) comprising one or more passive antennas, these antenna
Member can be antenna in the same direction, poliarizing antenna or spatial distribution antenna (DAS, Distributed Antenna
System), they can both be arranged into a row, can also be arranged into a face array.
With the maturation of AAS technologies, level to antenna beam, vertical dimension can be realized by being deployed with AAS base station
Control；One extra free degree is provided for MPS process optimization to the control of the vertical dimension of wave beam, it is logical using the free degree
Cross dynamic adjustment downwards bevel beam angle, it is possible to achieve the new application deployment such as vertical dimension cells beam figuration, user wave beam figuration；From
And inter-cell interference (ICI, Inter-Cell Interference) is effectively reduced, improve the Signal to Interference plus Noise Ratio of user side
(SINR, Signal to Interference and Noise Ratio) performance, finally realizes lifting system capacity, improves system
The purpose for coverage rate of uniting.
However, when above-mentioned wave beam forming is performed, the selection of Downtilt and the selection of user intercouple, tool
Body, it is determined that, it is necessary to positional information according to selected user during angle of declination；And when selecting user, the degree of each user
Amount expression formula (such as SINR) can contain angle of declination.This cross-couplings are that the system decision-making brings great difficulty, it is contemplated that
Solve this problem.
The content of the invention
For defect of the prior art, asked it is an object of the invention to the coupling for solving above-mentioned angle of declination and user's selection
There is provided a kind of new wave beam forming implementation method based on antenna system for topic.The present invention will determine the mistake at downwards bevel beam angle
Journey is divided into switching-beam figuration and the step of user wave beam figuration two：First, according to the difference of angle of declination, each sector is divided in advance
For multiple sectors in the different coverage in base station, network coverage division is carried out according to identical rule；In base
Side stand when performing switching-beam figuration, cooperates between multiple sectors, to reduce inter-cell interference for guiding, the respective service of decision
Region and corresponding angle of declination, do not consider the problem of user selects in this process.Then, for each sector, it is determined that its
Behind coverage, base station selects user to be serviced from its coverage, performs the operation of user wave beam figuration, realizes angle of declination
Further adjustment.Pass through above-mentioned two step, you can realize the decoupling that angle of declination selection and user select, without backstage expense, with
Extremely low complexity realizes the purpose of multi-cell cooperating reduction interference.
Specifically, the present invention is achieved by the following technical solutions, as shown in Fig. 2 the present invention comprises the following steps：
Step one, the different Downtilt of correspondence, each sector is divided into apart from the different coverage in base station.
Step 2, each sector determines the activation coverage of oneself by way of rotation, other cells fully according to
Identical rule confirms the activation coverage of its correspondence sector.
Step 3, each sector service user is chosen from its activation coverage by specific dispatching method.
Step 4, for the user being selected in step 3, carries out data transmission according to specific transmission pattern.
Preferably, in step one, it is contemplated that user's general satisfaction is uniformly distributed, and the symmetrical alternating mode of step 2 is led
Cause the activation probability in each region equal, thus, it is proposed that carried out according to homalographic criterion many in coverage division, and network
Individual sector carries out coverage division according to identical rule.
In step 2, for some sector, its each coverage is polling type being serviced, the week of rotation
Phase is Tlong；For three sectors of same base station selection, their initial service area should be pairwise orthogonal；To not
Same base station selection, the poll rule of its sector and initial service area should be consistent with each other with other base station selections.
In step 3, to each sector under scene, after it is determined that it activates coverage, according to the position of user
Put, be scheduled to activating the user in coverage in it.According to the difference of transmission mode, provided in a certain specific time-frequency
In source block (RB, Resource Block), base station can only dispatch a user, can also dispatch multiple users.
In step 3, described particular schedule rule can be maximum capacity (MC, Maximum Capacity), with
It is any one in the various scheduling strategies such as machine scheduling (RR, Round Robin), equitable proportion (PF, Proportional Fair)
It is individual.
In step 4, the specific transmission mode includes space diversity, space division multiplexing, user wave beam figuration, MU-
MIMO (Multiple User Multiple Input Multiple Output) etc..
Compared with prior art, the present invention has following beneficial effect：
First, angle of declination selection and user's selection are that decoupling is carried out in the present invention, and complexity is relatively low；
Second, the present invention combines switching-beam figuration and user wave beam figuration, and take full advantage of that AAS can provide is vertical
Tie up the wave beam adjustment free degree；
3rd, execution of the invention is distributed, without the interaction of any background information；
4th, each step of the invention can be carried out under the scope of existing standard, without extra standard chemical industry
Make.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is that the abstract logic of AAS base stations is represented；
Fig. 2 is the overall flow figure of the present invention；
Fig. 3 is the schematic diagram that sector is divided into inside and outside coverage；
Under Fig. 4 is single cell scenario, the coloring schematic diagram of different sectors selection not coactivation coverage；
Under Fig. 5 is multiple cell situation, the coloring schematic diagram of different sectors selection not coactivation coverage.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
The present invention provides a kind of new wave beam forming implementation method based on antenna system.The present invention is cut by combining
Wave beam forming and user wave beam figuration are changed, the purpose of reduction inter-cell interference, lifting network capacity and spreadability can be realized.This
According to the difference of angle of declination, each sector is divided into apart from the different coverage in base station first for invention；Then, base station is performed
Switching-beam figuration, multiple sectors determine respective activation coverage and corresponding angle of declination by cooperating；Finally, each fan
User is dispatched in the base station in area from its activation coverage, performs the operation of user wave beam figuration, realizes the further tune of angle of declination
It is whole.The present invention can realize the decoupling that angle of declination selection and user select, and be that multiple cell association can be achieved without backstage expense
Make, realize the reasonable utilization of vertical dimension space resource, improve system covering, lifting system capacity.
The first step, in the present embodiment, three sectors of each base station selection correspondence, each sector according to angle of declination difference
2. 3. three coverages are divided into, coverage are respectively labeled as 1., as shown in Figure 3.According to equal area partition principle, clothes
3. 2. 1. business region be similar polygon, then its length of side meets formula (1).
Divide behind coverage, when determining corresponding Downtilt, it should have been made to meet main beam and point to coverage
Center.
Second step, after coverage has been divided, next determines the activation service of each sector according to the rule of poll
Region, in the present embodiment, the rule that each sector is according to 1. 2. 3. 1. 2. ... carry out rotation, and the cycle of rotation is Tlong.Meanwhile,
Three sectors of same cell, its initial rotation coverage will keep orthogonal, as shown in figure 4, herein, we use different
Filling pattern represents different angle of declinations, the different activation coverage of correspondence.
The present embodiment considers the scene of 19 regular hexagon cells, 57 sectors of correspondence.Wherein in center cell according to upper
State rule and determine that it is activated behind coverage, other cells determine the activation service of its correspondence sector fully according to identical rule
Region, forms color-patch map as shown in Figure 5.So far, we complete the activation of each sector on the premise of user is not considered
Coverage (a certain coarse adjustment angle of declination of correspondence) selection.Easily find, in this process, according to the selected activation clothes of orthogonal rule
It is engaged in region, adjacent sectors being avoided completely while activating coverage 3., inter-cell interference is significantly reduced.Moreover, on
It is distributed to state the scheme for determining to activate coverage, once need not between the initial activation coverage of given sector, base station
Further back-end data exchange is carried out, implementation complexity is reduced.
3rd step is right according to the position of user after it is determined that it activates coverage to each sector under scene
The user in coverage is activated in it to be scheduled.In the present embodiment, our proportionally fairness doctrines, in a certain resource
A user is only dispatched on block.In scheduling process, each cell be it is independent carry out, without any data exchange, further
Embody the low complex degree advantage of distributed algorithm.
4th step, the user side angle of arrival that base station is fed back according to scheduled user calculates the weight factor of aerial array,
User wave beam figuration is performed, is carried out data transmission.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.
Claims (10)
1. a kind of new beam form-endowing method based on antenna system, it is characterised in that comprise the following steps：
Step one, the different Downtilt of correspondence, each sector is divided into apart from the different coverage in base station；
Step 2, each sector determines the activation coverage of oneself by way of rotation, and other cells are fully according to identical
Rule confirm its correspondence sector activation coverage；
Service user is chosen from its activation coverage in step 3, each sector；
Step 4, for the user being selected in step 3, carries out data transmission.
2. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In one, homalographic criterion need to be followed during to sector segmentation service region.
3. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In two, for the sector, its each coverage is that polling type is activated, and the cycle of rotation is Tlong。
4. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In two, for three sectors of same base station selection, the initial activation coverage of these three sectors meets pairwise orthogonal.
5. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In one, the rule in the multiple sector segmentation service regions of different base station addressing correspondence is identical.
6. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In two, correspondingly the poll rule of sector and initial service area and other base station selections are consistent with each other for different base station selections.
7. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In three, base station is only scheduled to user's subset in activation coverage.
8. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In three, in a certain specific time/frequency source block, one or more user of base station scheduling.
9. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In three, each cell chooses service user by any one following dispatching method from its activation coverage：
- maximum capacity criterion；
- random schedule criterion；
- equitable proportion criterion.
10. the new beam form-endowing method according to claim 1 based on antenna system, it is characterised in that in step
In rapid four, for the user being selected in step 3, carry out data transmission according to following any transmission mode：
- space diversity；
- space division multiplexing；
- user wave beam figuration；
-MU-MIMO。
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| CN106257951B (en) * | 2015-06-19 | 2021-04-30 | 中兴通讯股份有限公司 | Data transmission method and base station |
| CN106559886A (en) * | 2015-09-28 | 2017-04-05 | 华为技术有限公司 | The method of transmitting control information in wireless communication system, base station and user equipment |
| CN106452528B (en) * | 2016-09-14 | 2019-07-23 | 西安交通大学 | The system descending transmission rate method for improving of sector vertical fissure in 3D-MIMO system |
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| CN102821393A (en) * | 2011-06-09 | 2012-12-12 | 华为技术有限公司 | Method and device for processing inter-cell interference |
| CN103167512A (en) * | 2011-12-19 | 2013-06-19 | 中国移动通信集团公司 | Determining method and device of base station antenna down tilt angle and base station equipment |
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| CN101485215B (en) * | 2006-07-07 | 2012-01-11 | 艾利森电话股份有限公司 | Resource scheduling in wireless communication systems using beam forming |
| CN103167507B (en) * | 2011-12-19 | 2015-11-11 | 中国移动通信集团公司 | A kind of cell splitting method, device and base station equipment |
| CN104081854B (en) * | 2012-01-27 | 2019-02-05 | 交互数字专利控股公司 | Management improves inter-cell interference |
| CN103262489B (en) * | 2012-12-28 | 2016-06-08 | 华为技术有限公司 | Method, device, equipment and the system of multi-carrier communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102821393A (en) * | 2011-06-09 | 2012-12-12 | 华为技术有限公司 | Method and device for processing inter-cell interference |
| CN103167512A (en) * | 2011-12-19 | 2013-06-19 | 中国移动通信集团公司 | Determining method and device of base station antenna down tilt angle and base station equipment |
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