CN103178882B - A kind of 3D MIMO downdip adjusting method, device and base station - Google Patents
A kind of 3D MIMO downdip adjusting method, device and base station Download PDFInfo
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- CN103178882B CN103178882B CN201110439675.2A CN201110439675A CN103178882B CN 103178882 B CN103178882 B CN 103178882B CN 201110439675 A CN201110439675 A CN 201110439675A CN 103178882 B CN103178882 B CN 103178882B
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Abstract
Does the embodiment of the present invention provide a kind of 3D? MIMO downdip adjusting method, device and base station, comprise: according in base station coverage area, the position at user place, user is divided into multiple user's group, determine that this user organizes corresponding Downtilt respectively for each user group, the dynamic conditioning at community internal antenna angle of declination is realized with this, while raising community user performance, Downtilt is determined respectively relative to for each user, adjustment number of times can also be reduced, thus reduce system complexity.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of three-dimensional multiple-input and multiple-output (3DMIMO, 3DimensionsMultiple-Input-Multiple-Output) downdip adjusting method, device and base station.
Background technology
At Long Term Evolution (LTE, LongTermEvolution) in system, in order to make signal be limited in the coverage of either own cell, reducing the interference to other co-frequency cells simultaneously, making directional antenna beams graph slopes dom certain angle be a kind of very effective method.This technology all can bring the lifting of power system capacity to macrocellular or micro-cellular environment.Rational angle of declination arranges quality and the capacity that not only greatly can improve system, and base station can also be enable better to play a role, thus better for wireless user provides service.This technology has become future communications standard, such as a part for LTE and senior Long Term Evolution (LTE-A, LTE-Advanced) standard.
3DMIMO technology can control the equivalent aerial waveform (i.e. signal) in vertical direction effectively by base band signal process, be the important means that future mobile communication system effectively controls to disturb and cover.Existing 3DMIMO antenna gain in the horizontal and vertical directions can be distinguished as depicted in figs. 1 and 2.The realization of 3DMIMO technology can have different algorithms, comprising 3D Wave beam forming (Beamforming) technology and the simple equivalent angle of declination self-adaptative adjustment technology of complexity.When equivalence angle of declination self-adaptative adjustment technology refers to and send signal in specific frequency band/moment resource, by the mode of base band signal process, realize the self-adaptative adjustment of equivalent vertical antenna pattern (pattern) (or beam direction) on present band/moment.
But 3DMIMO technology is only applicable to the scene of following fixing angle of declination at present: relative to 2DMIMO technology, in the horizontal direction, change its half-power beam width (HPBW), in vertical direction simultaneously, the half-power beam width of an arrowband shown by antenna array, and can be corrected by a fixing angle of declination.
And in the application scenarios of fixing angle of declination, as shown in Figure 3, the main lobe of vertical antenna points to the position, somewhere on ground, community, the vertical antenna gain of this position is maximum, and along with distance is to the expansion at center of housing estate and edge, vertical antenna gain will reduce gradually.Therefore, the poor-performing of center of housing estate and edge customer.
In order to strengthen the performance of center of housing estate and edge customer, in actual communication system, can for each user, regulate angle of declination, although the main lobe of vertical antenna can be made like this to point to this user, promote the performance of this user, the complexity of system promotes excessive.
Summary of the invention
The embodiment of the present invention provides a kind of 3DMIMO downdip adjusting method, device and base station, for solving in the application of existing 3DMIMO technology, in order to strengthen the performance of center of housing estate and edge customer, and the problem that system complexity is higher.
A kind of 3DMIMO downdip adjusting method, described method comprises:
Determine the position at each user place in base station coverage community;
According to the position of each user determined, described user is divided at least two user's groups;
For each user's group, determine that this user organizes corresponding angle of declination.
A kind of 3DMIMO angle of declination adjusting device, described device comprises:
Position determination unit, for determining the position at each user place in base station coverage community;
Grouped element, for the position according to each user determined, is divided at least two user's groups by described user;
Angle of declination determining unit, for for each user's group, determines that this user organizes corresponding angle of declination.
A kind of base station, this base station comprises described 3DMIMO angle of declination adjusting device.
According to the scheme that the embodiment of the present invention provides, according in base station coverage area, the position at user place, user is divided into multiple user's group, determines that this user organizes corresponding Downtilt respectively for each user group, realize the dynamic conditioning at community internal antenna angle of declination with this, while raising community user performance, determine Downtilt respectively relative to for each user, adjustment number of times can also be reduced, thus reduce system complexity.
Accompanying drawing explanation
Fig. 1 is 3DMIMO horizontal direction antenna gain schematic diagram in prior art;
Fig. 2 is 3DMIMO vertical direction antenna gain schematic diagram in prior art;
Fig. 3 is the 3DMIMO angle of declination that provides in prior art and antenna gain relation schematic diagram;
The 3DMIMO downdip adjusting method step schematic diagram of Fig. 4 for providing in the embodiment of the present invention one;
The 3DMIMO downdip adjusting method step schematic diagram of Fig. 5 for providing in the embodiment of the present invention two;
Fig. 6 organizes division result schematic diagram for the user provided in the embodiment of the present invention two;
The 3DMIMO angle of declination adjusting device structural representation of Fig. 7 for providing in the embodiment of the present invention three.
Embodiment
The present invention program is for the shortcoming of existing scheme, a kind of new scheme is proposed to improve 3DMIMO systematic function, its basic thought is: in community, divide subregion (subcell), Dynamic Selection subregion angle of declination, makes the main aerial gain of this zone user can reach maximum.To find premised on reasonable balance between systematic function and complexity, dynamic adjustments angle of declination, completes the Wave beam forming in multiple vertical direction in community.The present invention program is applicable to the communication system relevant to 3DMIMO channel.
Below in conjunction with Figure of description and each embodiment, the present invention program is described.
Embodiment one,
The embodiment of the present invention one provides a kind of 3DMIMO downdip adjusting method, and the step of the method as shown in Figure 4, comprising:
The position at step 101, each user place determined in base station coverage community.
Concrete, the positional information of each reporting of user can be received, thus determine the position at each user place.
Step 102, to divide into groups.
This step comprises, and according to the position of each user determined, described user is divided at least two user's groups.
Preferably, distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station can be utilized as threshold value, user is divided into groups.Concrete, the first distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station can be determined, and, determine the second distance between each user and base station, and according to the order that second distance is ascending, user can be sorted.
From first user obtained after sequence, perform following operation successively, until all users are divided to user's group:
Obtain after sorting, and be not divided to user group user as reference user, from sequence after this reference user and be not divided to user group user, determine that the 3rd distance between reference user is less than the node users of described first distance, reference user and each node users are divided into user's group, thus realize the user that geographical position is comparatively close to be divided into user's group.
Preferably, in the present embodiment, can also with the position of main lobe sensing place of vertical antenna during fixing angle of declination for boundary, user is divided into two user's groups, concrete, can determine the first distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station, the user second distance between base station being greater than described first distance is divided into first user group, and the user second distance between base station being not more than described first distance is divided into second user's group.
Step 103, adjustment angle of declination.
This step comprises, and for each user's group, determines that this user organizes corresponding angle of declination.
Concrete, can for each user in this user's group, determine to make this user obtain the sub-angle of declination of maximum antenna gain, respectively for each sub-angle of declination determined, determine that this user organizes corresponding antenna gain summation, by sub-angle of declination corresponding time maximum for antenna gain summation, be defined as this user and organize corresponding angle of declination.
Wherein, can, according to base station height, user's height and the distance between base station and user, determine to make this user obtain the sub-angle of declination of maximum antenna gain.Concrete, sub-angle of declination can be determined by following formula:
Wherein:
θ
tilterepresent the sub-angle of declination that this user is corresponding;
H
bSrepresent the height of base station;
H
mSrepresent the user's height preset;
D represents the distance between base station and this user.
The method provided below by embodiment two pairs of embodiment of the present invention one is described.Concrete, the distance between the position of main lobe sensing place of vertical antenna during to utilize fixing angle of declination and base station, as threshold value, is grouped into example to user and is described.
Embodiment two,
The embodiment of the present invention 21 provides a kind of 3DMIMO downdip adjusting method, and the step of the method as shown in Figure 5, comprising:
Step 201, determine the position of each user.
Concrete, according to the feedback information of each user in base station coverage community, the positional information of user can be obtained, for convenience of description with (UE
index, i, UE
index, j) positional information of recording user, wherein, index=1,2 ... n, i are the abscissa of user index positional information, and j is the ordinate of user index positional information.
Step 202, the distance determining between each user and base station.
In this step, can according to the positional information of the user obtained, calculate the distance (i.e. second distance) between user and base station, and according to the distance of distance, user is sorted, for each user, sequence sequence number and the positional information of its correspondence can be stored, with n=10, according to second distance, ascending to carry out sequence be example, and a kind of possible storage format is as shown in table 1:
| Sequence sequence number | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| User ID | UE 1 | UE 2 | UE 4 | UE 6 | UE 7 | UE 5 | UE 3 | UE l0 | UE 8 | UE 9 |
| Abscissa | UE 1，i | UE 2，i | UE 4，i | UE 6，i | UE 7，i | UE 5，i | UE 3，i | UE l0，i | UE 8，i | UE 9，i |
| Ordinate | UE 1，j | UE 2，j | UE 4，j | UE 6，j | UE 7，j | UE 5，j | UE 3，j | UE l0，j | UE 8，j | UE 9，j |
Table 1
Step 203, to divide into groups according to the first distance.
In this step, the first distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station can be divided into groups as threshold value.Concrete, can according to customer location storage order in table 1, from sequence sequence number is the user of 1, successively using the user in table 1 as reference user, if this reference user has been included in certain user organizes, then skips this user, continued to find next reference user; If this reference user is not included in certain user organizes, then poll to be arranged in after this reference user and not to be divided to the user of user's group, if the spacing of the user be polled to and reference user (i.e. the 3rd distance) is less than threshold value, then itself and reference user are divided in a user organizes.
After all users are divided to user's group, grouping terminates.User organizes division result can be as shown in Figure 6.
Step 204, for each user's group, determine angle of declination.
In this step, for each user's group, can according to the principle making the antenna gain of user maximum, for each user, by the vertical angle (i.e. sub-angle of declination) in this user's group between each user and base station according to base station height, the factors such as user's height and distance are therebetween obtained, then polling algorithm is applied, respectively with the fixing angle of declination that the angle calculated in this user's group is organized as this user, calculate the antenna gain of user, this user can be made to organize the maximum angle of the antenna gain summation of all users, namely corresponding Downtilt can be organized as this user.
This method both have selected angle of declination dynamically, was fixed by the angle of declination that some users organize again, namely can find a reasonably balance between complexity and throughput of system.
According to the scheme that the embodiment of the present invention one and embodiment two provide, from the angle analysis of user performance considering Cell Center User and Cell Edge User simultaneously, the Automatic adjusument that high factor carries out angle of declination can be hung according to customer location, cell size, antenna, the method can while raising systematic function, reduce system complexity, find rational balance between.
With the embodiment of the present invention one and embodiment two based on same inventive concept, provide following device.
Embodiment three,
The embodiment of the present invention three provides a kind of 3DMIMO angle of declination adjusting device, and the structure of this device as shown in Figure 7, comprising:
Position determination unit 11 is for determining the position at each user place in base station coverage community; Described user, for the position according to each user determined, is divided at least two user's groups by grouped element 12; Angle of declination determining unit 13, for for each user's group, determines that this user organizes corresponding angle of declination.
The first distance between the position of main lobe sensing place of vertical antenna when described grouped element 12 is specifically for determining fixing angle of declination and base station, user second distance between base station being greater than described first distance is divided into first user group, and the user second distance between base station being not more than described first distance is divided into second user's group.
The first distance between the position of main lobe sensing place of vertical antenna when described grouped element 12 is specifically for determining fixing angle of declination and base station, and, determine the second distance between each user and base station, the order ascending according to second distance sorts to user, from first user obtained after sequence, perform following operation successively, until all users are divided to user's group:
Obtain after sorting, and be not divided to user group user as reference user, from sequence after this reference user and be not divided to user group user, determine that the 3rd distance between reference user is less than the node users of described first distance, reference user and each node users are divided into user's group.
Described angle of declination determining unit 13 is specifically for for each user in this user's group, determine to make this user obtain the sub-angle of declination of maximum antenna gain, respectively for each sub-angle of declination determined, determine that this user organizes corresponding antenna gain summation, by sub-angle of declination corresponding time maximum for antenna gain summation, be defined as this user and organize corresponding angle of declination.
Described angle of declination determining unit 13, specifically for according to base station height, user's height and the distance between base station and user, is determined to make this user obtain the sub-angle of declination of maximum antenna gain.
Described angle of declination determining unit 13 is specifically for determining sub-angle of declination by following formula:
Wherein:
θ
tilterepresent the sub-angle of declination that this user is corresponding;
H
bSrepresent the height of base station;
H
mSrepresent the user's height preset;
D represents the distance between base station and this user.
Especially, the device that the embodiment of the present invention three provides can be in a base station integrated.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (9)
1. a three-dimensional multiple-input and multiple-output 3DMIMO downdip adjusting method, it is characterized in that, described method comprises:
Determine the position at each user place in base station coverage community;
According to the position of each user determined, described user is divided at least two user's groups;
For each user's group, determine that this user organizes corresponding angle of declination;
For each user's group, determine that this user organizes corresponding angle of declination, specifically comprise: for each user in this user's group, determine to make this user obtain the sub-angle of declination of maximum antenna gain; Respectively for each sub-angle of declination determined, determine that this user organizes corresponding antenna gain summation; By sub-angle of declination corresponding time maximum for antenna gain summation, be defined as this user and organize corresponding angle of declination;
According to the position of each user determined, described user is divided at least two user's groups, specifically comprises:
Determine the first distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station; And, determine the second distance between each user and base station;
The order ascending according to second distance sorts to user;
From first user obtained after sequence, perform following operation successively, until all users are divided to user's group:
Obtain after sorting, and be not divided to user group user as reference user, from sequence after this reference user and be not divided to user group user, determine that the 3rd distance between reference user is less than the node users of described first distance, reference user and each node users are divided into user's group.
2. the method for claim 1, is characterized in that, according to the position of each user determined, described user is divided at least two user's groups, specifically comprises:
Determine the first distance between the position of main lobe sensing place of vertical antenna during fixing angle of declination and base station;
User second distance between base station being greater than described first distance is divided into first user group, and the user second distance between base station being not more than described first distance is divided into second user's group.
3. the method for claim 1, is characterized in that, for each user in this user's group, determines to make this user obtain the sub-angle of declination of maximum antenna gain, specifically comprises:
According to base station height, user's height and the distance between base station and user, determine to make this user obtain the sub-angle of declination of maximum antenna gain.
4. method as claimed in claim 3, is characterized in that, determine sub-angle of declination by following formula:
Wherein:
θ
tilterepresent the sub-angle of declination that this user is corresponding;
H
bSrepresent the height of base station;
H
mSrepresent the user's height preset;
D represents the distance between base station and this user.
5. a three-dimensional multiple-input and multiple-output 3DMIMO angle of declination adjusting device, it is characterized in that, described device comprises:
Position determination unit, for determining the position at each user place in base station coverage community;
Grouped element, for the position according to each user determined, is divided at least two user's groups by described user;
Angle of declination determining unit, for for each user's group, determines that this user organizes corresponding angle of declination;
Described angle of declination determining unit, specifically for for each user in this user's group, determine to make this user obtain the sub-angle of declination of maximum antenna gain, respectively for each sub-angle of declination determined, determine that this user organizes corresponding antenna gain summation, by sub-angle of declination corresponding time maximum for antenna gain summation, be defined as this user and organize corresponding angle of declination;
Described grouped element, the first distance between the position of main lobe sensing place of vertical antenna during specifically for determining fixing angle of declination and base station, and, determine the second distance between each user and base station, the order ascending according to second distance sorts to user, from first user obtained after sequence, perform following operation successively, until all users are divided to user's group: obtain after sorting, and be not divided to user group user as reference user, from sequence after this reference user, and be not divided in the user of user's group, determine that the 3rd distance between reference user is less than the node users of described first distance, reference user and each node users are divided into user's group.
6. device as claimed in claim 5, it is characterized in that, described grouped element, the first distance between the position of main lobe sensing place of vertical antenna during specifically for determining fixing angle of declination and base station, user second distance between base station being greater than described first distance is divided into first user group, and the user second distance between base station being not more than described first distance is divided into second user's group.
7. device as claimed in claim 5, is characterized in that, described angle of declination determining unit, specifically for according to base station height, user's height and the distance between base station and user, determines to make this user obtain the sub-angle of declination of maximum antenna gain.
8. device as claimed in claim 7, is characterized in that, described angle of declination determining unit, specifically for determining sub-angle of declination by following formula:
Wherein:
θ
tilterepresent the sub-angle of declination that this user is corresponding;
H
bSrepresent the height of base station;
H
mSrepresent the user's height preset;
D represents the distance between base station and this user.
9. a base station, is characterized in that, described base station comprise as arbitrary in claim 5 ~ 8 as described in device.
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| ES2716903T3 (en) * | 2013-08-08 | 2019-06-17 | Intel Ip Corp | Method, apparatus and system for electrical downward tilt adjustment in a multiple input multiple output system |
| CN104283597B (en) * | 2013-11-25 | 2018-03-27 | 北京邮电大学 | A kind of beam form-endowing method and equipment |
| CN105471487B (en) | 2014-07-01 | 2020-07-24 | 索尼公司 | Communication apparatus, base station, and communication method |
| EP3200497A4 (en) * | 2014-09-25 | 2017-09-27 | Ntt Docomo, Inc. | Base station and user device |
| CN106160801B (en) * | 2015-03-25 | 2020-01-31 | 联想(北京)有限公司 | signal processing method and base station |
| CN104779986B (en) * | 2015-04-07 | 2018-07-17 | 西安交通大学 | Using disturbance coordination method between the multiple cell of three-dimensional wave beam forming in 3D-MIMO systems |
| CN106851665A (en) * | 2015-12-07 | 2017-06-13 | 上海无线通信研究中心 | The downdip adjusting method of antenna and base station |
| CN108615978B (en) * | 2016-12-12 | 2020-09-25 | ***通信集团公司 | Antenna direction adjusting method and device |
| CN106850112B (en) * | 2016-12-30 | 2019-09-03 | 中国电子科技集团公司电子科学研究院 | A kind of disturbance coordination method of orthogonal frequency network |
| CN107104285B (en) * | 2017-03-01 | 2020-09-29 | 广州银禾网络通信有限公司 | Configuration method and system for vertical downtilt values of 3D-MIMO antenna facing 5G base station |
| CN117879726A (en) * | 2024-01-11 | 2024-04-12 | 东莞市仁丰电子科技有限公司 | Multi-frequency switching adjustment method and system for directional antenna |
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