CN103731846A - Directional antenna and omni-directional antenna combined distributive antenna system - Google Patents
Directional antenna and omni-directional antenna combined distributive antenna system Download PDFInfo
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- CN103731846A CN103731846A CN201410005459.0A CN201410005459A CN103731846A CN 103731846 A CN103731846 A CN 103731846A CN 201410005459 A CN201410005459 A CN 201410005459A CN 103731846 A CN103731846 A CN 103731846A
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Abstract
A directional antenna and omni-directional antenna combined distributive antenna system comprises a plurality of central processing units (CPUs) and remote antenna units (RAUs). The plurality of RAUs in a community is connected with the CPUs through optical fibers. The CPUs performs joint processing on uplink signals received by the plurality of RAUs and transmit pre-processed downlink signal through the plurality of RAUs. Suppose that (i)M/ (i) directional antennae, (i)N/ (/i) omni-directional antennae and (i)L/ (/i) antenna frames are arranged in the community. The directional antenna number (i)M/ (i) is larger than or equal to 3, the omni-directional antennae number (i)N/ (/i) is larger than or equal to 1, and the antenna frame (i)L/ (/i) is smaller than or equal to [(i)M/ (i)+ (i)N/ (/i)]. The directional antennae are arranged on the antenna frames at community corners, the maximum gain directions aligns to the center of the community, and the omni-directional antennae are arranged on the antenna frames at the center of the community. The directional antennae can be 120-degree, 60-degree or smaller-angle beam antennae. The [(i)M/ (i)+ (i)N/ (/i)] antennae in the community serve all mobile terminals in the community. A plurality of the directional antennae of the antenna frames at community corners can serve mobile terminals of the community and the adjacent communities.
Description
Technical field
The invention belongs to wireless communication technology field, for improving community marginal user performance and reducing network planning cost, is the distributing antenna system that a kind of directional antenna combines with omnidirectional antenna.
Background technology
Along with the progress and development in epoch, the various aspects such as the speed of human society to radio communication, quality have proposed more and more higher requirement, and wish more convenient ground obtaining information and link up.Due to the finiteness of radio spectrum resources, distributing antenna system is paid close attention to by people more and more as a kind of technology that can reduce transmitting power, increase power system capacity, improvement system covering performance.
In distributing antenna system, distribution being deployed in multiple far-end antenna elements of diverse geographic location in community is connected to a CPU by return link in the dedicated cells such as optical fiber or coaxial cable, carries out the Combined Treatment of signal in CPU.CPU in multiple communities is connected to a wireless controller equipment by minizone return link, thereby has formed a kind of tree-like network topology structure.Each CPU sends down link signal by this community far-end antenna element, and the uplink signal of the multiple far-end antenna elements receptions of Combined Treatment.
In traditional cellular system, with realizing the seamless covering on a large scale to coverage in multiple regular hexagons community.A regular hexagon community forms an independently communication cell, between distant multiple non-adjacent community, can realize channeling.Along with the continuous increase of number of users, the capacity that must improve cellular system could meet user's demand. and the conventional method that improves power system capacity is cell splitting technology, be about to a macro cells and be divided into multiple Micro-cell, and a base station equipment is set in each Micro-cell processes reception of wireless signals and the transmitting in this Microcell.But cell splitting can not unrestrictedly go on.On the one hand, this is because multiple minizones exist channeling, and when radius of society reduces to certain limit, minizone co-channel interference can be strengthened to unacceptable; On the other hand, when user moves, the too small community of radius can cause community frequently to be switched, and the overheads such as system signaling increase sharply.As can be seen here, cell splitting can bring network rack to be set as this increase, to disturb and the problem such as strengthen, handover is frequent.By adopting distributing antenna system correlation technique can overcome above these defects.
Through the retrieval of existing document is found, the people such as Jonghyun Park were the < < IEEE Transaction on Wireless Communications(IEEE radio communication transactions of 2009) delivered the article that is entitled as " Capacity Analysis for Distributed Antenna Systems Using Cooperative Transmission Schemes in Fading Channels " on > >, wherein analyzed under multiple cell cellular structures diverse location mobile subscriber's capacity characteristic in the distributing antenna system based on omnidirectional antenna.The people such as Liu Yuxi have delivered the article that is entitled as " many honeycomb distributed types Reverse Link Performance Analysis " in 2011 on < < Journal of Electronic & Information Technology (electronics and information journal) > >, have wherein provided the ergodic capacity of the distributing antenna system based on omnidirectional antenna under three cell cellular structures.Distributing antenna system based on omnidirectional antenna is compared traditional cellular system can obtain higher channel capacity, but at cell boarder, the service performance that mobile phone users can obtain is poor; In addition, owing to need to disposing in different geographical position a large amount of far-end antenna elements, thereby basic network planning and the cost of building have been increased.
Summary of the invention
The above-mentioned deficiency that the object of the invention is to overcome prior art scheme, has proposed the distributing antenna system that a kind of directional antenna combines with omnidirectional antenna.The present invention is deployed in the directional antenna of corner, community by use and is deployed in the omnidirectional antenna of center of housing estate, down transmitting power can be concentrated in the community that will cover, and has lowered the interference to neighbor cell, thereby has improved the channel capacity of system; By directional antenna being placed on to corner, community, can improve the performance of Cell Edge User; By multiple directional antennas are placed on an antenna holder, can reduce the cost of system network planning.
Technical scheme of the present invention is:
The present invention includes several CPU and several far-end antenna elements, wherein each far-end antenna element is connected with CPU by optical fiber, and all far-end antenna elements in Yi Ge community are connected to same CPU by optical fiber.There is an antenna holder at each far-end antenna element place, on antenna holder, can configure common antenna or multiple antenna, and antenna can be omnidirectional antenna, can be also directional antenna.The far-end antenna element that is deployed in corner, community consists of directional antenna and antenna holder, and the far-end antenna element that is deployed in center of housing estate consists of omnidirectional antenna and antenna holder.CPU Combined Treatment receives signal through the up link of multiple far-end antenna elements of Optical Fiber Transmission, and the pretreated down link signal of CPU is launched to multiple far-end antenna elements via Optical Fiber Transmission.Multiple far-end antenna elements in mobile phone users and community carry out two-way signaling transmission by wireless channel.
A far-end antenna element that is deployed in corner, community described in the application comprises directional antenna and antenna holder, a described far-end antenna element that is deployed in center of housing estate comprises omnidirectional antenna and antenna holder, and wherein directional antenna or omnidirectional antenna are all placed on antenna holder.Suppose to have in Yi Ge community the secondary directional antenna of M, the secondary omnidirectional antenna of N, L antenna holder.The secondary directional antenna of M is placed on the antenna holder of corner, community, and their maximum gain direction is aimed at center of housing estate.The secondary omnidirectional antenna of N is placed on the antenna holder of center of housing estate.The how secondary directional antenna of neighbor cell can share an antenna holder in corner, community, so the number L of Yi Ge community internal antenna frame is less than or equal to the summation (M+N) of directional antenna number and omnidirectional antenna number.
The directional antenna of disposing in described system can be 120 ° of beam angle directional antennas, can be also 60 ° of beam angle directional antennas.Meet-min{12 (θ/θ of gain in 120 ° of beam-forming antenna all angles
3dB)
2, A
m, θ
3dB=70 °, A
m=20dB.Meet-min{12 (θ/θ of gain in 60 ° of beam-forming antenna all angles
3dB)
2, A
m, θ
3dB=35 °, A
m=23dB.
Compared with prior art, the invention has the beneficial effects as follows: reduced the number of antenna holder, reduced cost and the complexity of the network planning and construction; The performance of having improved Cell Edge User, has increased power system capacity.
Accompanying drawing explanation
Fig. 1 is allocating antenna situation schematic diagram in embodiment 1 system.
Fig. 2 is the distributing antenna system based on 120 ° of beam-forming antennas.
Fig. 3 be while only considering noise factor embodiment 1 system cell border channels capacity with the situation of change of normalization distance.
Fig. 4 be while only considering disturbing factor embodiment 1 system cell border channels capacity with the situation of change of normalization distance.
Fig. 5 is allocating antenna situation schematic diagram in embodiment 2 systems.
Fig. 6 be while only considering noise factor embodiment 2 system cell border channels capacity with the situation of change of normalization distance.
Fig. 7 be while only considering disturbing factor embodiment 2 system cell border channels capacity with the situation of change of normalization distance.
Fig. 8 is allocating antenna situation schematic diagram in embodiment 3 systems.
Fig. 9 be while only considering noise factor embodiment 3 corner, system cell channel capacities with the situation of change of normalization distance.
Embodiment
Below in conjunction with accompanying drawing, system of the present invention is described in detail: embodiment implements as prerequisite take technical solution of the present invention, has provided concrete execution mode and operating process, but protection scope of the present invention is not limited to following embodiment.Embodiment 1: the 4 antenna distributing antenna systems that a kind of 120 ° of beam-forming antennas are combined with omnidirectional antenna
As shown in Figure 1, embodiment 1 comprises 7 regular hexagon communities, there are 4 far-end antenna elements each community, is positioned at far-end antenna element of center of housing estate and is positioned at three far-end antenna elements of corner, community, the corresponding antenna holder of each far-end antenna element.Omnidirectional antenna and 3 pairs of each community Nei You 1 vice division chief on center of housing estate antenna holder are arranged on respectively the directional antenna on the antenna holder of corner, 3 communities.In Yi Ge community, adopt 4 slave antennas to cover whole community.Each far-end antenna element is connected by the CPU of optical fiber Yu Zhe community.Between mobile phone users and far-end antenna element, by wireless channel, carry out two-way signaling transmission.
In embodiment 1, in community 1, first antenna holder is deployed in center of housing estate O, and second antenna holder is positioned at the corner A of community, and the 3rd antenna holder is positioned at the corner C of community, and the 4th antenna holder is positioned at the corner E of community.Omnidirectional antenna is deployed on first antenna holder.First secondary 120 ° of beam-forming antennas are positioned on second antenna holder, and the maximum gain direction of these 120 ° of directional antennas aligning center of housing estate, and maximum gain direction is
second secondary 120 ° of directional antennas are positioned on the 3rd antenna holder, and the maximum gain direction of these 120 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the 3rd secondary 120 ° of directional antennas are positioned on the 4th antenna holder, and the maximum gain direction of these 120 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the antenna that is deployed in to 4 secondary distributions community diverse location is connected with the CPU in community by optical fiber, between mobile phone users and each antenna, by wireless channel, carries out two-way signaling transmission.
In community 1, on second antenna holder, configured altogether 3 secondary 120 ° of directional antennas, these 3 120 ° of directional antennas belong to respectively community 1, community 2 and community 7; On the 3rd antenna holder, configured altogether 3 secondary 120 ° of directional antennas, these 3 120 ° of directional antennas belong to respectively community 1, community 3 and community 4; On the 4th antenna holder, configured altogether 3 secondary 120 ° of directional antennas, these 3 120 ° of directional antennas belong to respectively community 1, community 5 and community 6.The maximum gain direction of 120 ° of beam-forming antennas of all deployment is all aimed at the center of affiliated subdistrict.
According to the configuration mode of antenna in community 1, in embodiment 1 Qi Ge community, have 19 antenna holders, 21 secondary 120 ° of beam-forming antennas and 7 secondary omnidirectional antennas.Be deployed in an antenna holder of center of housing estate for mounting omnidirectional antenna, and the antenna holder that is placed on cell boarder is shared by the directional antenna of 1 or 2 or 3 neighbor cell.
As a comparison, consider all distributing antenna systems based on 120 ° of beam-forming antennas, have 6 secondary 120 ° of directional antennas to be distributed in Yi Ge community, as shown in Figure 2.Take community 1 as example, the distribution situation of each antenna is as follows: on the antenna holder of center of housing estate, configure 3 secondary directional antennas, their maximum gain direction is aimed at corner, community, is respectively
be positioned on the antenna holder of corner, community A, C, E and configure 120 ° of beam-forming antennas that 3 pairs belong to community 1, their maximum gain direction is aimed at center of housing estate, is respectively
for performance comparison, consider, in centralized antenna system, only on the antenna holder in center of housing estate, to configure a secondary omnidirectional antenna, and community edge is without configuration antenna.For easy analysis, the distance of community 1 border CB is normalized.
While only considering noise factor and disturbing factor in embodiment 1, community 1 border CB channel capacity is distinguished as shown in Figures 3 and 4 with the situation of change of normalization distance.As can be seen from Figure 3, on the 1 border CB of community, when only considering noise factor, the channel capacity maximum of the distributing antenna system based on 120 ° of beam-forming antennas and centralized antenna system can reach 14bps/Hz and 4.8bps/Hz, and the channel capacity maximum of embodiment 1 can reach 15.2bps/Hz; As can be seen from Figure 4, on the 1 border CB of community, when only considering disturbing factor, the channel capacity maximum of the distributing antenna system based on 120 ° of directional antennas and centralized antenna system can reach 5.5bps/Hz and 0.7bps/Hz, and the channel capacity maximum of embodiment 1 can reach 6bps/Hz.As can be seen here, compare the distributing antenna system based on 120 ° of directional antennas, embodiment 1 small area boundary system capacity increases, and the decreased number of configuration antenna; Compare centralized antenna system, although the number of antenna holder and antenna increases in embodiment 1, channel capacity has had raising by a relatively large margin.Embodiment 2: the 8 antenna distributing antenna systems that a kind of 120 ° of directional antennas are combined with omnidirectional antenna
As shown in Figure 5, embodiment 2 comprises 7 regular hexagon communities, and each community comprises 4 far-end antenna elements, is positioned at far-end antenna element of center of housing estate and is positioned at three far-end antenna elements of cell boarder.Each far-end antenna element configuration two slave antennas, a secondary vertical polarized antenna and a secondary horizontally-polarized antenna.Each far-end antenna element is connected by the CPU of optical fiber Yu Zhe community.Between mobile phone users and far-end antenna element, by wireless channel, carry out two-way signaling transmission.
In embodiment 2, be positioned at the secondary vertical depolarized omnidirectional antenna of far-end antenna element configuration one and a secondary horizontally polarized omnidirectional antenna of center of housing estate, be positioned at the secondary 120 ° of wave beam perpendicular polarization directional antennas of far-end antenna element configuration one of cell boarder and the directional antenna of secondary 120 ° of wave beam horizontal polarizations.In Yi Ge community, adopt altogether 8 slave antennas to cover whole region.
In embodiment 2, the secondary omnidirectional antenna of interior configuration two, six secondary directional antennas and four antenna holders in community 1.First antenna holder is positioned at center of housing estate O, and second antenna holder is positioned at the corner A of community, and the 3rd antenna holder is positioned at the corner C of community, and the 4th antenna holder is positioned at the corner E of community.Two secondary omnidirectional antennas are installed on first antenna holder.Be installed on the secondary and 120 ° of beam-forming antennas of the second pair of first on second antenna holder and be respectively vertical and horizontal polarization, and the maximum gain direction of 120 ° of directional antennas all aims at center of housing estate, maximum gain direction is
be positioned at that the 3rd on the 3rd antenna holder is secondary is respectively vertical and horizontal polarization with 120 ° of directional antennas of fourth officer, and the maximum gain direction of 120 ° of directional antennas all aims at center of housing estate, maximum gain direction is
be installed on the 4th antenna holder the 5th secondary and the 6th secondary 120 ° of beam-forming antennas and be respectively vertical and horizontal and polarize, and the maximum gain direction of 120 ° of directional antennas all aims at center of housing estate, maximum gain direction is
8 slave antennas that are distributed in community diverse geographic location are connected by the CPU of optical fiber Yu Zhe community, carry out the transmitted in both directions of radio signal between mobile phone users and each antenna by air interface.
In community 1,3 secondary 120 ° of perpendicular polarization directional antennas and 3 secondary 120 ° of horizontal polarization directional antennas on second antenna holder, have been configured altogether, these 6 secondary 120 ° of directional antennas belong to respectively community 1, community 2 and community 7, and a corresponding secondary perpendicular polarization directional antenna and a secondary horizontal polarization directional antenna belong to same community; 3 secondary 120 ° of perpendicular polarization directional antennas and 3 secondary 120 ° of horizontal polarization directional antennas on the 3rd antenna holder, have been configured altogether, these 6 secondary 120 ° of directional antennas belong to respectively community 1, community 3 and community 4, and a corresponding secondary perpendicular polarization directional antenna and a secondary horizontal polarization directional antenna belong to same community; 3 secondary 120 ° of perpendicular polarization directional antennas and 3 secondary 120 ° of horizontal polarization directional antennas on the 4th antenna holder, have been configured altogether, these 6 secondary 120 ° of directional antennas belong to respectively community 1, community 5 and community 6, and a corresponding secondary perpendicular polarization directional antenna and a secondary horizontal polarization directional antenna belong to same community.The maximum gain direction of 120 ° of all beam-forming antennas is all aimed at the center of affiliated subdistrict.
According to the configuration mode of antenna in community 1, in embodiment 2 Qi Ge communities, have 19 antenna holders, 42 secondary 120 ° of directional antennas and 14 secondary omnidirectional antennas.Be positioned at an antenna holder of center of housing estate for mounting omnidirectional antenna, and the antenna holder that is placed on cell boarder is shared by the directional antenna of 1 or 2 or 3 neighbor cell.
While only considering noise factor and disturbing factor in embodiment 2, the border CB channel capacity of community 1 is distinguished as shown in Figures 6 and 7 with the situation of change of normalization distance.As seen from Figure 6, on the 1 border CB of community, when only considering noise factor, the channel capacity maximum of the distributing antenna system based on 120 ° of beam-forming antennas and centralized antenna system can reach 14bps/Hz and 4.8bps/Hz, and the channel capacity maximum of embodiment 2 can reach 23bps/Hz; As seen from Figure 7, on the 1 border CB of community, when only considering disturbing factor, the channel capacity maximum of the distributing antenna system based on 120 ° of directional antennas and centralized antenna system can reach 5.5bps/Hz and 0.7bps/Hz, and the channel capacity maximum of embodiment 2 can reach 7.2bps/Hz.As can be seen here, compare with centralized antenna system with adopting the distributing antenna system of 120 ° of beam-forming antennas, although the number of antenna holder and antenna increases in embodiment 2, channel capacity has had raising by a relatively large margin.
Embodiment 3: the 8 antenna distributing antenna systems that a kind of 60 ° of directional antennas are combined with omnidirectional antenna
As shown in Figure 8, embodiment 3 comprises 7 regular hexagon communities, and each community comprises 7 far-end antenna elements, is positioned at 1 far-end antenna element of center of housing estate and is positioned at 6 far-end antenna elements of cell boarder.Each far-end antenna element is placed an antenna holder, and a secondary vertical depolarized omnidirectional antenna and a secondary horizontally polarized omnidirectional antenna are installed on the antenna holder in center of housing estate.Each far-end antenna element is connected by the CPU of optical fiber Yu Zhe community.Between mobile phone users and far-end antenna element, by wireless channel, carry out the transmitted in both directions of signal.
In embodiment 3, be positioned at the secondary vertical depolarized omnidirectional antenna of far-end antenna element configuration one and a secondary horizontally polarized omnidirectional antenna of center of housing estate, and be positioned at the directional antenna of secondary 60 ° of the far-end antenna element configuration one of cell boarder.In Yi Ge community, adopt altogether 8 slave antennas to cover whole region.
In embodiment 3, the secondary omnidirectional antenna of interior configuration two, six secondary directional antennas and seven antenna holders in community 1.First antenna holder is positioned at center of housing estate O, second antenna holder is positioned at the corner A of community, the 3rd antenna holder is positioned at the corner B of community, the 4th antenna holder is positioned at the corner C of community, the 5th antenna holder is positioned at the corner D of community, the 6th antenna holder is positioned at the corner E of community, and the 7th antenna holder is positioned at the corner F of community.Vertical depolarized omnidirectional antenna and horizontally polarized omnidirectional antenna are installed on first antenna holder.First 60 ° of directional antennas are positioned on second antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
second 60 ° of directional antenna is positioned on the 3rd antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the 3rd 60 ° of directional antennas are positioned on the 4th antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the 4th 60 ° of directional antennas are positioned on the 5th antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the 5th 60 ° of directional antennas are positioned on the 6th antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
the 6th 60 ° of directional antennas are positioned on the 7th antenna holder, and the maximum gain direction of these 60 ° of directional antennas aligning center of housing estate, and maximum gain direction is
distributing installation is connected by the CPU of optical fiber Yu Zhe community at 8 slave antennas of community diverse geographic location, between mobile phone users and each antenna, by wireless channel, carries out two-way signaling transmission.
In community 1, configure altogether 3 secondary 60 ° of beam-forming antennas on second antenna holder, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 2 and community 7; On the 3rd antenna holder, configure altogether 3 secondary 60 ° of directional antennas, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 2 and community 3; On the 4th antenna holder, configure altogether 3 secondary 60 ° of directional antennas, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 3 and community 4; On the 5th antenna holder, configure altogether 3 secondary 60 ° of directional antennas, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 4 and community 5; On the 6th antenna holder, configure altogether 3 secondary 60 ° of directional antennas, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 5 and community 6; On the 7th antenna holder, configure altogether 3 secondary 60 ° of directional antennas, these 3 secondary 60 ° of directional antennas belong to respectively community 1, community 6 and community 7.The maximum gain direction of 60 ° of beam-forming antennas of all configurations is all aimed at the center of affiliated subdistrict.
According to the configuration mode of antenna in community 1, in embodiment 3 Qi Ge communities, comprise altogether 31 antenna holders, 42 secondary 60 ° of directional antennas and 14 secondary omnidirectional antennas.Be positioned at an antenna holder of center of housing estate for mounting omnidirectional antenna, the antenna holder that is placed on corner, community is shared by the directional antenna of 1 or 2 or 3 neighbor cell.
While only considering noise factor in embodiment 3, the border CB channel capacity of community 1 is shown as Fig. 9 with the situation of change of normalization distance.As seen from Figure 9, on the 1 border CB of community, when only considering noise factor, the channel capacity maximum of centralized antenna system can reach 4.8bps/Hz, and the channel capacity maximum of embodiment 3 can reach 15.5bps/Hz.As can be seen here, compare with centralized antenna system, although the number of antenna holder and antenna increases in embodiment 3, channel capacity has had raising by a relatively large margin.
By finding out the analysis of above embodiment, the present invention is deployed in the directional antenna of corner, community by use and is positioned at the omnidirectional antenna of center of housing estate, radio signal power can be concentrated on more in the Serving cell of expecting to cover, reduce the interference to neighbor cell, thereby improved the power system capacity of multicell network; By directional antenna is placed on to cell boarder, can improve the performance of Cell Edge User; By multiple directional antennas being placed on an antenna holder, can reduction system in the complexity of the network planning and the cost that network sets up.
Claims (4)
1. the distributing antenna system that directional antenna is combined with omnidirectional antenna, its principal character is: in Yi Ge community, comprise at least one CPU and several far-end antenna elements; Each small area shape is regular hexagon, and the seamless covering on a large scale to whole coverage is realized in multiple adjacent regular hexagon communities; Each far-end antenna element is connected with affiliated CPU by optical fiber; All far-end antenna elements in Yi Ge community are connected to identical CPU; The far-end antenna element that is deployed in corner, community comprises directional antenna and antenna holder, and the far-end antenna element that is deployed in center of housing estate comprises omnidirectional antenna and antenna holder; For up link, by optical fiber, the reception signal of multiple far-end antenna elements is transferred to CPU and carries out Combined Treatment; For down link, through the pretreated transmitted signal of CPU, by Optical Fiber Transmission, to multiple far-end antenna elements, launch; Between mobile phone users and far-end antenna element, by air interface, carry out the transmission of the double-direction radio signal of telecommunication;
Supposing has in Yi Ge community
msecondary directional antenna,
nsecondary omnidirectional antenna and
lindividual antenna holder,
msecondary directional antenna is positioned on the antenna holder of corner, community, and its maximum gain direction is aimed at center of housing estate;
nsecondary omnidirectional antenna is positioned on the antenna holder of center of housing estate; Between all far-end antennas in mobile phone users and community, by wireless channel, carry out transmitted in both directions.
2. the distributing antenna system that a kind of directional antenna according to claim 1 is combined with omnidirectional antenna, it is characterized in that, the directional antenna that system adopts can be 120 ° of beam-forming antennas, or 60 ° or the directional antenna of minor beam angle more, they are deployed in corner, community, and maximum gain direction is all aimed at center of housing estate.
3. the distributing antenna system that a kind of directional antenna according to claim 2 is combined with omnidirectional antenna, is characterized in that, multiple antenna can share an antenna holder, the like this number of antenna holder
lbe less than or equal to directional antenna and omnidirectional antenna number sum (
m+
n).
4. the distributing antenna system that a kind of directional antenna according to claim 1 is combined with omnidirectional antenna, it is characterized in that, being positioned at all mobile phone users that how secondary directional antenna on same antenna holder can Wei Yige community provides service, or provides service for the mobile subscriber in multiple communities; The radio-frequency carrier transmitting-receiving frequency of multiple antenna can be operated in different frequency ranges, or is operated in identical frequency range.
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| CN201410005459.0A CN103731846A (en) | 2014-01-06 | 2014-01-06 | Directional antenna and omni-directional antenna combined distributive antenna system |
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| CN106599747A (en) * | 2016-11-25 | 2017-04-26 | 长兴芯科物联科技有限公司 | FDM UHF RFID reader-writer dense networking method |
| CN107210799A (en) * | 2015-02-02 | 2017-09-26 | 瑞典爱立信有限公司 | The utilization of antenna beam information |
| CN108834063A (en) * | 2018-05-31 | 2018-11-16 | 北京佰才邦技术有限公司 | Terminal scheduling method and apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107210799A (en) * | 2015-02-02 | 2017-09-26 | 瑞典爱立信有限公司 | The utilization of antenna beam information |
| CN107210799B (en) * | 2015-02-02 | 2021-01-12 | 瑞典爱立信有限公司 | Utilization of antenna beam information |
| CN106599747A (en) * | 2016-11-25 | 2017-04-26 | 长兴芯科物联科技有限公司 | FDM UHF RFID reader-writer dense networking method |
| CN108834063A (en) * | 2018-05-31 | 2018-11-16 | 北京佰才邦技术有限公司 | Terminal scheduling method and apparatus |
| CN108834063B (en) * | 2018-05-31 | 2022-02-25 | 北京佰才邦技术股份有限公司 | Terminal scheduling method and device |
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