CN111416640A - Leaky cable MIMO branch coverage system - Google Patents
Leaky cable MIMO branch coverage system Download PDFInfo
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- CN111416640A CN111416640A CN201910013569.4A CN201910013569A CN111416640A CN 111416640 A CN111416640 A CN 111416640A CN 201910013569 A CN201910013569 A CN 201910013569A CN 111416640 A CN111416640 A CN 111416640A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
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Abstract
A leaky cable MIMO branch covering system comprises a signal source, a first main leaky cable, a second main leaky cable, a first path gating component, a second path gating component, a first splitter, a second splitter, a branch shunting component and a branch covering unit, wherein the first end of the first path gating component is used for receiving signals output by the signal source, a plurality of first splitters are cascaded together to distribute the signals to the first main leaky cables, the first end of the second path gating component is used for receiving the signals output by the signal source, a plurality of second splitters are cascaded together to distribute the signals to the second main leaky cables, the first main leaky cable and the second main leaky cable are connected through the branch shunting component, and the branch shunting component is further electrically connected to the branch covering unit. The leaky cable MIMO branch coverage system can effectively improve the signal coverage effect and the system capacity of the branch, eliminate the signal blind area and reduce the electromagnetic pollution.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a leaky-cable MIMO branch coverage system.
Background
With the rapid development of the mobile internet, the demand of users for mobile data traffic shows explosive growth, and Multiple-Input Multiple-Output (MIMO) technology can improve the channel capacity of a system and increase the information transmission rate without increasing the channel bandwidth, and thus has become one of the key technologies of 4G and 5G.
The existing indoor MIMO coverage system generally comprises a plurality of antenna units, because the indoor environment is complex, the existing indoor MIMO coverage system has blind areas and electromagnetic pollution is difficult to avoid, and the cost is high when multi-path leaky cables are used for realizing MIMO.
Disclosure of Invention
In view of the above, there is a need to provide a leaky cable MIMO branch coverage system, which has a good signal coverage effect, can improve the capacity of the leaky cable MIMO branch coverage system and eliminate signal blind areas, and can reduce electromagnetic pollution.
One embodiment of the present invention provides a leaky cable MIMO branch coverage system, which includes a signal source, a first main leaky cable, a second main leaky cable, a first path gating component, a second path gating component, a first splitter, a second splitter, a branch splitting component, and a branch coverage unit, wherein a first end of the first path gating component is used for receiving a signal output by the signal source, a second end of the first path gating component is electrically connected to the first splitter, a plurality of the first splitters are cascaded together to distribute the signal to a plurality of the first main leaky cables, a first end of the second path gating component is used for receiving the signal output by the signal source, a second end of the second path gating component is electrically connected to the second splitter, a plurality of the second splitters are cascaded together to distribute the signal to a plurality of the second main leaky cables, the first main path leaky cable and the second main path leaky cable are connected through a first port and a second port of the branch path branching assembly, and a third port and a fourth port of the branch path branching assembly are electrically connected to the branch path covering unit.
Preferably, the first splitter and the second splitter are power splitters or couplers.
Preferably, the first splitter and the second splitter include a combining port and a splitting port, the combining port of the first splitter is electrically connected to the first path gating assembly, the splitting port of the first splitter is electrically connected to the first main path leaky cable, the combining port of the second splitter is electrically connected to the second path gating assembly, and the splitting port of the second splitter is electrically connected to the second main path leaky cable.
Preferably, the bypass shunt assembly is any one of the following: the power divider comprises two power divider assemblies with branch ends connected back to back, two power divider assemblies with branch ends connected back to back and the middle connected by a leaky cable, two coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, two power divider and coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, a bidirectional coupler and a bidirectional power divider.
Preferably, the branch path branching assembly includes a branching port and a combining port, the first port is a combining port and is electrically connected to the first main path leaky cable, the second port is a combining port and is electrically connected to the second main path leaky cable, the third port is a branching port and is electrically connected to one port of the branch path covering unit, and the fourth port is a branching port and is electrically connected to the other port of the branch path covering unit.
Preferably, the branch covering unit is any one of the following: the terminal connects two with the polarization leaky coaxial cable of MIMO antenna, the terminal connects two with the polarization leaky coaxial cable of load, the terminal connects two with the polarization leaky coaxial cable of two single polarization antennas respectively, two with the polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, the terminal connects two different polarization leaky coaxial cable of MIMO antenna, the terminal connects two different polarization leaky coaxial cable of load, the terminal connects two different polarization leaky coaxial cable of two single polarization antennas respectively, two different polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, MIMO antenna, two single polarization antennas, a leaky coaxial cable.
Preferably, when the branch covering unit comprises two leaky cables with different polarizations, the distance between the two leaky cables with different polarizations is 0-50 m; when the branch covering unit comprises two leakage cables with the same polarization, the distance between the two leakage cables with the same polarization is 5 mm-50 m.
Preferably, the leaky cables in the first main path leaky cable, the second main path leaky cable and the branch covering unit are leaky coaxial cables or leaky waveguides.
Preferably, the first path gating component and the second path gating component are any one of the following: the loop-loop device comprises a component of a loop device and a load, a component of a loop device and an antenna, an isolator, a component of a combiner and a load integrating the functions of the loop device, a component of a combiner and an antenna integrating the functions of the loop device, a combiner integrating the functions of the isolator, a component of the loop device, the combiner and the load, a component of the loop device, the combiner and the antenna, and a component of the isolator and the combiner; the load is an impedance matching element and is used for consuming energy which is not leaked out on the first main path leaky cable and the second main path leaky cable or reflected energy.
Compared with the prior art, the leaky cable MIMO branch coverage system utilizes the leaky cable to realize MIMO signal coverage, can effectively improve the signal coverage effect and the system capacity of the leaky cable branch, can solve the problem of the coverage blind area of the traditional MIMO antenna coverage system, can reduce electromagnetic pollution, and realizes green signal coverage.
Drawings
Fig. 1 is an architecture diagram of an embodiment of a leaky cable MIMO branch coverage system according to the present invention.
Fig. 2 is an architecture diagram of another embodiment of the leaky cable MIMO branch coverage system of the invention.
Fig. 3 is an architecture diagram of yet another embodiment of the leaky cable MIMO branch coverage system of the invention.
Fig. 4 is an architecture diagram of yet another embodiment of the leaky cable MIMO branch coverage system of the invention.
Fig. 5 is an architectural diagram of an embodiment of fig. 4.
Fig. 6 is an architectural diagram of another embodiment of fig. 4.
Description of the main elements
Detailed Description
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Referring to fig. 1, an embodiment of the invention provides a leaky-cable MIMO branch coverage system 100. The leaky cable MIMO branch coverage system 100 is compatible with signals of different operators such as mobile, internet, telecommunication and different communication systems with different frequencies such as 2G, 3G, 4G, and 5G.
The leaky cable MIMO branch coverage system 100 includes a signal source 10, a first main leaky cable 12, a second main leaky cable 14, a first path gating component 16, a second path gating component 18, a first splitter 20, a second splitter 22, a branch splitting component 24, and a branch coverage unit 26. The first end of the first path gating component 16 is configured to receive a signal output by the signal source 10, the second end of the first path gating component 16 is electrically connected to the first splitter 20, and a plurality of the first splitters 20 may be cascaded together to distribute the signal output by the signal source 10 to a plurality of the first main leaky cables 12.
The first end of the second path gating component 18 is used for receiving another signal output by the signal source 10, the second end of the second path gating component 18 is electrically connected to the second splitter 22, and a plurality of the second splitters 22 are cascaded together to distribute the signal output by the signal source 10 to a plurality of the second main path leaky cables 14. The two signals output by the signal source 10 may have different code streams. The first main leaky cable 12 and the second main leaky cable 14 are connected through the first port and the second port of the branch circuit branching assembly 24, and the third port and the fourth port of the branch circuit branching assembly 24 are electrically connected to the branch covering unit 26.
In fig. 1, since a first main leaky cable 12 and a second main leaky cable 14 are exemplified, it is not necessary to provide a plurality of first splitters 20 and a plurality of second splitters 22 in fig. 1. Assuming that the first splitter 20 and the second splitter 20 both have two output ports, only one first splitter 20 and one second splitter 22 may be provided for two first main leaky cables 12 and two second main leaky cables 14 (as shown in fig. 4); for three first main leaky cables 12 and three second main leaky cables 14, two cascaded first splitters 20 and two cascaded second splitters 22 (as shown in fig. 2) may be provided, and for four first main leaky cables 12 and four second main leaky cables 14, three cascaded first splitters 20 and three cascaded second splitters 22 (as shown in fig. 3) may be provided.
In one embodiment, the signal source 10 may include a plurality of signal sources of different frequency bands, so that the leaky-cable MIMO branch coverage system 100 can simultaneously support transmitting wireless signals of a plurality of different frequency bands. For example, the signal source 10 includes a 4G signal source and a 5G signal source, one path of signal of the 4G signal source and one path of signal of the 5G signal source are combined by the first path gating component 16 and input to the first main path leaky cable 12 through the first splitter 20, the other path of signal of the 4G signal source and the other path of signal of the 5G signal source are combined by the second path gating component 18 and input to the second main path leaky cable 14 through the second splitter 22, and the two paths of signals output by the 4G signal source and the 5G signal source have different code streams.
In one embodiment, the first routing component 16 and the second routing component 18 may be any one of the following: the device comprises a circulator and load assembly, a circulator and antenna assembly, an isolator, a combiner and load assembly integrating the function of the circulator, a combiner and antenna assembly integrating the function of the circulator, a combiner integrating the function of the isolator, a circulator and combiner and load assembly, a circulator and combiner and antenna assembly, and an isolator and combiner assembly. The load may be an impedance matching element operable to dissipate energy not leaked out of the first main path leaky cable 12, the second main path leaky cable 14, or reflected energy.
In one embodiment, the first and second splitters 20 and 22 may be power splitters or couplers.
In one embodiment, the first and second splitters 20, 22 include a combined port and a split port, the combined port of the first splitter 20 being electrically connected to the first path gating assembly 16, the split port of the first splitter 20 being electrically connected to the first main leaky cable 12, the combined port of the second splitter 22 being electrically connected to the second path gating assembly 18, and the split port of the second splitter 22 being electrically connected to the second main leaky cable 14. When a signal is input from the combining port of the first splitter 20 or the second splitter 22, a signal splitting function can be realized, and a split signal is output through a splitting port; when a signal is input from a splitting port of the first splitter 20 or the second splitter 22, a signal combining function may be implemented, and a combined signal is output through a combining port.
In one embodiment, the branch splitting assembly 24 may also include a splitting port and a combining port. The first port of the branch path branching assembly 24 is a combining port and is electrically connected to the first main path leaky cable 12, the second port of the branch path branching assembly 24 is a combining port and is electrically connected to the second main path leaky cable 14, the third port of the branch path branching assembly 24 is a branching port and is electrically connected to one port of the branch path covering unit 26, and the fourth port of the branch path branching assembly 24 is a branching port and is electrically connected to the other port of the branch path covering unit 26.
In one embodiment, the bypass shunt assembly 24 may be any one of the following: the power divider comprises two power divider assemblies with branch ends connected back to back, two power divider assemblies with branch ends connected back to back and the middle connected by a leaky cable, two coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, two power divider and coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, a bidirectional coupler and a bidirectional power divider.
In one embodiment, the bypass covering unit 26 may be any one of the following: the terminal connects two with the polarization leaky coaxial cable of MIMO antenna, the terminal connects two with the polarization leaky coaxial cable of load, the terminal connects two with the polarization leaky coaxial cable of two single polarization antennas respectively, two with the polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, the terminal connects two different polarization leaky coaxial cable of MIMO antenna, the terminal connects two different polarization leaky coaxial cable of load, the terminal connects two different polarization leaky coaxial cable of two single polarization antennas respectively, two different polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, MIMO antenna, two single polarization antennas, a leaky coaxial cable.
Referring to fig. 4, the leaky-cable MIMO branch coverage system 100 is illustrated by taking two first main leaky-cables 12 and two second main leaky-cables 14 as an example.
In one embodiment, the leaky cable MIMO branch coverage system 100 includes a signal source 10, two first main leaky cables 12, two second main leaky cables 14, a first path gating component 16, a second path gating component 18, a first splitter 20, a second splitter 22, two branch splitting components 24, and two branch coverage units 26. The specific connection relationship between the elements shown in fig. 4 can refer to fig. 1, and is not described in detail here.
In one embodiment, the first routing module 16 includes a first circulator 160 and a first load 162, and the second routing module 18 is illustrated as including a second circulator 180 and a second load 182. The first end a1 of the first circulator 160 is used for receiving a signal output by the signal source 10, the second end a2 of the first circulator 160 is electrically connected to the first splitter 20, and the third end a3 of the first circulator 160 is electrically connected to the first load 162. The first end b1 of the second circulator 180 is configured to receive another signal output by the signal source 10, the second end b2 of the second circulator 180 is electrically connected to the second splitter 22, the third end b3 of the second circulator 180 is electrically connected to the second load 182, and the two signals of the signal source 10 have different code streams.
The first routing assembly 16 and the second routing assembly 18 in fig. 4 are shown as being comprised of a circulator and a load only, and are not limited thereto. In other embodiments of the present invention, the first path gating component 16 and the second path gating component 18 may also be a circulator and antenna component, an isolator, a circulator and load component integrating the function of a circulator, a combiner and antenna component integrating the function of a circulator, a combiner integrating the function of an isolator, a circulator and combiner and load component, a circulator and combiner and antenna component, and an isolator and combiner component.
As shown in fig. 5, the leaky-cable MIMO branch covering system 100 includes two branch splitting assemblies 24 and two branch covering units 26. The leaky-cable MIMO branch coverage system 100 shown in fig. 5 is exemplified by one branch shunt assembly 24 being a power splitter assembly with two shunt ends connected back-to-back, another branch shunt assembly 24 being a coupler assembly with two shunt ends connected back-to-back, and one branch coverage unit 26 being two different polarization leaky-cables 40 with ends electrically connected together by a jumper 42, wherein the other branch coverage unit 26 is a MIMO antenna.
The one-branch covering unit 26 in fig. 5 is only shown to connect the other ends of the two leaky cables 40 with different polarizations through a jumper wire 42, and is not limited thereto. In other embodiments of the present invention, the branch covering unit 26 may also be two different polarization leaky cables 40 with ends connected to the MIMO antenna, two different polarization leaky cables 40 with ends connected to the load, and two different polarization leaky cables 40 with ends connected to two single-polarization antennas respectively.
In one embodiment, the distance between the two leaky cables with different polarizations is preferably 0-50 m. I.e. the two leaky cables 40 with different polarizations can be spaced apart by a minimum distance of 0, the two leaky cables 40 with different polarizations can be spliced together.
As shown in fig. 6, the leaky-cable MIMO branch coverage system 100 also includes two branch splitting assemblies 24 and two branch coverage units 26. The leaky-cable MIMO branch coverage system 100 shown in fig. 6 is a coupler assembly in which one branch splitting assembly 24 is connected back-to-back at two splitting ends, wherein the other branch splitting assembly 24 is a bidirectional coupler, wherein one branch covering unit 26 is two different polarized leaky cables 40 connected to the MIMO antenna at the end, and wherein the other branch covering unit 26 is two same polarized leaky cables 50 connected to the load at the end.
The one-branch covering unit 26 in fig. 6 is only shown for connecting the two leakage cables 50 with the same polarization through two loads, and is not limited thereto. In another embodiment of the present invention, the branch covering unit 26 may be two co-polarized leaky cables 50 having ends connected to the MIMO antenna, two co-polarized leaky cables 50 having ends connected to two single-polarized antennas, respectively, and two co-polarized leaky cables 50 having ends electrically connected together by a jumper wire 42.
In one embodiment, the distance between the two leakage cables 50 with the same polarization is preferably 5mm to 50 m.
In an embodiment, the leaky cables in the first main path leaky cable 12, the second main path leaky cable 14, and the branch covering unit 26 may be leaky coaxial cables or leaky waveguides.
It can be understood that a main leaky cable coverage road may have not only one branch, but also a plurality of branches may be provided on the main leaky cable coverage road according to actual application scenarios.
Above-mentioned leaky cable MIMO branch road covers system, utilizes leaky cable to realize MIMO signal coverage, can effectively improve the signal coverage effect and the system capacity of branch road, can solve traditional MIMO antenna coverage system's the coverage blind area problem, and can reduce electromagnetic pollution, realizes the green coverage of signal.
It will be apparent to those skilled in the art that other variations and modifications may be made in accordance with the invention and its spirit and scope in accordance with the practice of the invention disclosed herein.
Claims (9)
1. The utility model provides a leaky cable MIMO branch road covers system which characterized in that: the leaky cable MIMO branch covering system comprises a signal source, a first main leaky cable, a second main leaky cable, a first path gating component, a second path gating component, a first splitter, a second splitter, a branch splitting component and a branch covering unit, wherein the first end of the first path gating component is used for receiving signals output by the signal source, the second end of the first path gating component is electrically connected to the first splitter, the first splitters are cascaded together to distribute the signals to the first main leaky cables, the first end of the second path gating component is used for receiving the signals output by the signal source, the second end of the second path gating component is electrically connected to the second splitter, the second splitters are cascaded together to distribute the signals to the second main leaky cables, and the first main leaky cable is connected with the second main leaky cable through the first port and the second port of the branch splitting component, the third port and the fourth port of the branch shunt assembly are electrically connected to the branch covering unit.
2. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the first splitter and the second splitter are power splitters or couplers.
3. The leaky cable MIMO branch overlay system as claimed in claim 2, wherein: the first splitter and the second splitter comprise a combining port and a splitting port, the combining port of the first splitter is electrically connected to the first path gating assembly, the splitting port of the first splitter is electrically connected to the first main path leaky cable, the combining port of the second splitter is electrically connected to the second path gating assembly, and the splitting port of the second splitter is electrically connected to the second main path leaky cable.
4. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the branch shunt component is any one of the following components: the power divider comprises two power divider assemblies with branch ends connected back to back, two power divider assemblies with branch ends connected back to back and the middle connected by a leaky cable, two coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, two power divider and coupler assemblies with branch ends connected back to back and the middle connected by a leaky cable, a bidirectional coupler and a bidirectional power divider.
5. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the branch shunting assembly comprises a shunting port and a combining port, the first port is a combining port and is electrically connected to the first main path leaky cable, the second port is a combining port and is electrically connected to the second main path leaky cable, the third port is a shunting port and is electrically connected to one port of the branch covering unit, and the fourth port is a shunting port and is electrically connected to the other port of the branch covering unit.
6. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the branch covering unit is any one of the following: the terminal connects two with the polarization leaky coaxial cable of MIMO antenna, the terminal connects two with the polarization leaky coaxial cable of load, the terminal connects two with the polarization leaky coaxial cable of two single polarization antennas respectively, two with the polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, the terminal connects two different polarization leaky coaxial cable of MIMO antenna, the terminal connects two different polarization leaky coaxial cable of load, the terminal connects two different polarization leaky coaxial cable of two single polarization antennas respectively, two different polarization leaky coaxial cable that the terminal is connected together with the jumper electricity, MIMO antenna, two single polarization antennas, a leaky coaxial cable.
7. The leaky cable MIMO branch overlay system as claimed in claim 6, wherein: when the branch covering unit comprises two leaky cables with different polarizations, the distance between the two leaky cables with different polarizations is 0-50 m; when the branch covering unit comprises two leakage cables with the same polarization, the distance between the two leakage cables with the same polarization is 5 mm-50 m.
8. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the first main path leaky cable and the second main path leaky cable are leaky coaxial cables or leaky waveguides.
9. The leaky cable MIMO branch overlay system as claimed in claim 1, wherein: the first path gating component and the second path gating component are any one of the following components: the loop-loop device comprises a component of a loop device and a load, a component of a loop device and an antenna, an isolator, a component of a combiner and a load integrating the functions of the loop device, a component of a combiner and an antenna integrating the functions of the loop device, a combiner integrating the functions of the isolator, a component of the loop device, the combiner and the load, a component of the loop device, the combiner and the antenna, and a component of the isolator and the combiner; the load is an impedance matching element and is used for consuming energy which is not leaked out on the first main path leaky cable and the second main path leaky cable or reflected energy.
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| CN201910013569.4A CN111416640B (en) | 2019-01-07 | 2019-01-07 | Leaky cable MIMO branch coverage system |
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| CN201910013569.4A CN111416640B (en) | 2019-01-07 | 2019-01-07 | Leaky cable MIMO branch coverage system |
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| US20160329622A1 (en) * | 2014-01-20 | 2016-11-10 | Telefonaktiebolaget L M Ericsson (Publ) | Antenna System Providing Coverage For Multiple-Input Multiple-Output, MIMO, Communication, a Method and System |
| CN106330274A (en) * | 2015-07-10 | 2017-01-11 | 中国电信股份有限公司 | MIMO realization method and system based on single leakage cable |
| CN209218086U (en) * | 2019-01-07 | 2019-08-06 | 中天射频电缆有限公司 | It leaks cable MIMO branch and covers system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103268973A (en) * | 2013-06-13 | 2013-08-28 | 中天日立射频电缆有限公司 | Indoor leaky cable antenna and coverage system thereof |
| US20160329622A1 (en) * | 2014-01-20 | 2016-11-10 | Telefonaktiebolaget L M Ericsson (Publ) | Antenna System Providing Coverage For Multiple-Input Multiple-Output, MIMO, Communication, a Method and System |
| CN104935360A (en) * | 2015-06-11 | 2015-09-23 | 上海大学 | Linear coverage transmission system adopting MIMO signal bidirectional feed-in leakage cables |
| CN104967484A (en) * | 2015-06-11 | 2015-10-07 | 上海大学 | Rail transit wireless MIMO communication transmission system of signal bi-directional feed-in leakage cable |
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