CN110798843A - 5G signal radio frequency distribution system - Google Patents
5G signal radio frequency distribution system Download PDFInfo
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- CN110798843A CN110798843A CN201911231375.8A CN201911231375A CN110798843A CN 110798843 A CN110798843 A CN 110798843A CN 201911231375 A CN201911231375 A CN 201911231375A CN 110798843 A CN110798843 A CN 110798843A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Abstract
The invention discloses a 5G signal radio frequency distribution system, which comprises: an access unit for receiving and amplifying signals of a base station or a space; the extension unit is used for dividing the signals input by the access unit into multiple paths and sending the multiple paths of signals to the multiple covering units; a plurality of covering units, which are used for carrying out signal covering through a covering antenna after amplifying the received signals; the access unit is connected with the extension unit through a radio frequency coaxial cable, and the extension unit is connected with the plurality of covering units through the radio frequency coaxial cable. The invention adopts the radio frequency coaxial cable as a transmission medium, supports multi-point information source access and multi-point signal coverage, and adopts an innovative TDD synchronous control signal transmission and recovery scheme, thereby greatly reducing the complexity and cost of a coverage unit, and solving the coverage requirement of a 5G network and the later-stage lower-cost operation and maintenance requirement with relatively low cost.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a radio frequency distribution system for 5G signals.
Background
With the development of mobile communication network technology and the construction of communication infrastructure, mobile communication network coverage is deeper and deeper, the application requirements of mobile terminals such as mobile phones and the like are also increased explosively, and the user requirements are increased from the initial outdoor application to the mobile access requirements of indoor full scenes.
Currently, indoor coverage and distribution of 4G network signals are mainly divided into two major categories, namely passive distribution and active distribution. The passive distribution means that a high-power BBU and a repeater are adopted as information sources indoors, passive devices such as a coaxial cable and a power divider combiner are adopted as media for signal transmission, and then signals are transmitted through an antenna to realize wireless signal coverage. Active distribution means that active equipment is adopted to carry out radio frequency shunt and radio frequency far-end amplification indoors, and then wireless signal coverage is achieved through a coverage antenna. The passive distribution has the advantages of low manufacturing cost, simple realization and high reliability. The active distribution has the advantages of wide coverage range, good expansibility and good coverage effect.
With the upgrade of communication technology and networks, the 5G era has come, and compared with 2G/3G/4G mobile communication, the frequency of 5G mobile communication is higher, and the coverage requirement is higher, and in the current passive distribution scheme, due to a coaxial cable, as shown in fig. 1, the frequency band support capability of a power divider and a combiner is limited, and the service of a higher frequency band cannot be smoothly supported, and in addition, as the frequency rises, the loss of radio frequency transmission can be greatly increased, and the support transmission range of conventional passive distribution is greatly reduced, so that the requirements of most service scenes are difficult to meet. Therefore, in the 5G stage, the mainstream scheme of indoor coverage in the industry is shifted to the mode of an active distribution system.
In an active distribution system, a mainstream implementation scheme at present is a digital optical fiber distribution system, as shown in fig. 2, the digital optical fiber distribution system mainly comprises an access unit, an expansion unit and a covering unit, optical fiber connections are adopted among the units for transmitting 5G signals, and the bandwidth and the number of channels of the transmission signals of the 5G optical fiber distribution system are greatly increased compared with 4G, so that the system is in the support aspect of the transmission bandwidth. The transmission rate, the complexity and the cost of the equipment and the power consumption are increased remarkably, and when the high-capacity coverage scene is faced, the scheme is really a better solution, but when the high-capacity coverage scene is faced, the overall cost and the operation and maintenance cost are still expensive when the high-capacity coverage scene is faced to the area and the scene where the capacity demand and the service increment are not remarkable.
Aiming at different scenes and service requirements of indoor distribution and coverage of 5G signals, in terms of input and output, the price of a digital optical fiber distribution system and the electric charge of later-stage operation and the like are high, so that the digital optical fiber distribution system is not suitable to be used as a unique indoor coverage solution. According to different requirements, the method should be combined with some outstanding cost performance schemes, so as to meet the signal coverage requirements of different services and scenes of operators.
Disclosure of Invention
The invention aims to provide a 5G signal radio frequency distribution system, which can solve the coverage requirement and later-stage lower-cost operation and maintenance requirement of a 5G network at relatively low cost.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a 5G signal radio frequency distribution system, comprising:
an access unit for receiving and amplifying signals of a base station or a space;
the extension unit is used for dividing the signals input by the access unit into multiple paths and sending the multiple paths of signals to the multiple covering units;
a plurality of covering units, which are used for carrying out signal covering through a covering antenna after amplifying the received signals;
the access unit is connected with the extension unit through a radio frequency coaxial cable, and the extension unit is connected with the plurality of covering units through the radio frequency coaxial cable.
Further, the extension unit includes a 5G synchronization module, a power supply control switch, a power supply and a power divider, the 5G synchronization module is connected to the power supply control switch and the power divider, the power supply control switch is connected to the power supply and the power divider, the power divider is connected to the cover unit, the 5G synchronization module is configured to generate a TDD uplink and downlink switching timing control signal, and the timing control signal converts a direct current supplied to the cover unit into a direct current square wave carrying uplink and downlink timing characteristics through the power supply control switch.
Furthermore, the power supply control switch is an MOS (metal oxide semiconductor) tube, the grid electrode of the MOS tube is connected with the control end of the 5G synchronous module, and the drain electrode of the MOS tube is connected with the power supply.
Further, the covering unit comprises a radio frequency amplification module, a direct current rectification circuit and a comparator, wherein the input end of the radio frequency amplification module, the input end of the direct current rectification circuit and the input end of the comparator are connected with the power divider, the output end of the direct current rectification circuit is connected with the power supply end of the radio frequency amplification module, and the output end of the comparator is connected with the control end of the radio frequency amplification module.
Further, the direct current rectification circuit comprises a rectification diode and a filter capacitor, direct current pulses are input to the anode of the rectification diode, a rectification power supply is output to the cathode of the rectification diode and is grounded through the filter capacitor, direct current pulses are input to the anode of the input end of the comparator, and the output end of the comparator is connected with the control end of the radio frequency amplification module.
Further, the extension unit is connected with the plurality of covering units in a star shape.
Compared with the prior art, the invention has the advantages that: the invention adopts the radio frequency coaxial cable as a transmission medium, supports multi-point information source access and multi-point signal coverage, and adopts an innovative TDD synchronous control signal transmission and recovery scheme, thereby greatly reducing the complexity and cost of a coverage unit, and solving the coverage requirement of a 5G network and the later-stage lower-cost operation and maintenance requirement with relatively low cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a prior art passive distribution schematic.
FIG. 2 is a prior art digital fiber distribution schematic
Fig. 3 is a schematic diagram of rf distribution of the 5G signal rf distribution system according to the present invention.
Fig. 4 is a schematic diagram of an extension unit in the present invention.
Fig. 5 is a schematic diagram of a cover unit in the present invention.
Fig. 6 is a schematic diagram of a power supply control switch in the extension unit of the present invention.
Fig. 7 is a schematic diagram of the dc rectification and comparator signal recovery in the overlay unit of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Referring to fig. 3, the present invention provides a 5G signal rf distribution system, including: an access unit for receiving and amplifying signals of a base station or a space; the extension unit is used for dividing the signals input by the access unit into multiple paths and sending the multiple paths of signals to the multiple covering units; a plurality of covering units, which are used for carrying out signal covering through a covering antenna after amplifying the received signals; the access unit is connected with the extension unit through a radio frequency coaxial cable, and the extension unit is connected with the plurality of covering units through the radio frequency coaxial cable.
In this embodiment, the access unit is configured to receive a wireless signal or a radio frequency signal coupled to a base station, and the access unit supports a single channel and also supports multiple channels (MIMO).
In this embodiment, the extension unit supports access of a plurality of access units, and is configured to support synthesis and allocation of a plurality of information sources, and the extension unit supports star connection of a plurality of overlay units.
In this embodiment, the extension unit may be cascaded with multiple stages of extension units through the rf extension port.
In this embodiment, the external power supply of the system is connected to the extension unit and remotely supplies power to the access unit and the coverage unit through the radio frequency coaxial cable.
Referring to fig. 4, the extension unit includes a 5G synchronization module, a power supply control switch, a power supply, and a power divider, where the 5G synchronization module is connected to the power supply control switch and the power divider, the power supply control switch is connected to the power supply and the power divider, and the power divider is connected to the covering unit.
Referring to fig. 5, the covering unit includes a radio frequency amplification module, a dc rectification circuit, and a comparator, an input end of the radio frequency amplification module, an input end of the dc rectification circuit, and an input end of the comparator are all connected to the power divider, an output end of the dc rectification circuit is connected to a power supply end of the radio frequency amplification module, and an output end of the comparator is connected to a control end of the radio frequency amplification module.
The 5G synchronous module is used for generating a TDD uplink and downlink switching time sequence control signal, the time sequence control signal converts direct current supplied to the covering unit into direct current square waves carrying uplink and downlink time sequence characteristics through the power supply control switch, the covering unit divides the received direct current square waves into two paths, 1 path enters the comparator of the covering unit and is reduced into the TDD uplink and downlink time sequence control signal to control the radio frequency amplification module to work, and the other path supplies power to the radio frequency amplification module through the direct current rectification circuit of the covering unit.
Referring to fig. 6, the power supply control switch is an MOS transistor, a gate of the MOS transistor is connected to the control end of the 5G synchronization module, a drain of the MOS transistor is connected to the power supply, and the power supply control switch may also select another switch capable of implementing the function.
In this embodiment, the 5G synchronization module, the power supply, and the power divider may be implemented by selecting a scheme in the prior art.
Referring to fig. 7, the dc rectifying circuit includes a rectifying diode and a filter capacitor, a dc pulse is input to an anode of the rectifying diode, a rectifying power supply is output to a cathode of the rectifying diode and grounded through the filter capacitor, a dc pulse is input to an anode of an input terminal of the comparator, and an output terminal of the comparator is connected to a control terminal of the rf amplifying module.
The invention is further illustrated by the following specific examples.
Taking the Chinese telecom 5G as an example, the frequency band used by the Chinese telecom 5G is 3400MHz-3500MHz, the bandwidth is 100MHz, the information source is a 5G small base station, the radio frequency distribution system comprises 1 access unit, 1 extension unit and 4 coverage units, the 5G small base station is connected with the access unit through 1 radio frequency cable, the access unit is connected with the extension unit through 1 radio frequency cable, and the extension unit is respectively connected with the 4 coverage units through 4 radio frequency cables.
5G uplink and downlink signal trend: the downlink signal of 5G is transmitted from a radio frequency output port of the small base station and enters the access unit through a radio frequency cable, the access unit amplifies the signal and then sends the amplified signal to the expansion unit, the expansion unit is coupled with one path of signal and sends the amplified signal to the synchronization module, meanwhile, the signal is divided into 4 paths of signals, the 4 paths of signals are transmitted to the covering unit through the radio frequency cable, after the covering unit receives the signal, the amplified signal is output to a covering antenna from an antenna port, and the covering antenna covers the signal.
The uplink signals of 5G enter the antenna port of the covering unit through the covering antenna, and can reach the expansion unit through the radio frequency cable after being amplified, the expansion unit combines the uplink signals of the 4 covering units, and then the uplink signals are transmitted to the access unit through the radio frequency cable, and the access unit sends the signals to the radio frequency output port of the small base station through the radio frequency cable and returns to the small base station.
5G switching sequence control signal trend of uplink and downlink: the downlink signal is coupled to the 5G air interface synchronization module by the extension unit, the synchronization module generates an uplink and downlink switching time sequence control signal, the control signal controls a control switch of a direct current remote supply path, direct current output to the covering unit by the extension unit is changed into a square wave pulse form, a power supply control switch uses a metal-oxide semiconductor field effect transistor (MOS-FET) to realize the on-off control of a power supply, the G pole of the MOS-FET is connected with a control pin given by the synchronization module, the S pole of the MOS-FET is connected with the anode of the power supply, the D pole of the MOS-FET is connected with the output end of the power supply, and the power supply control switch is.
The covering unit receives the direct current pulse transmitted by the extension unit, the pulse is divided into two paths, one path of the pulse is output to the covering unit through a direct current rectifying circuit to be used as a power supply, and the radio frequency amplification module can normally operate and work, wherein the rectifying circuit generally comprises a path diode and a filter capacitor connected to the ground. The other path enters a comparator, the comparator generally uses an analog operational amplifier as a decision device, and compares the decision device with a set V _ Ref reference voltage as a reference to restore the decision device into a control signal, and the control signal is used for realizing the switching of the uplink and downlink working time sequences of the covering unit.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and within the scope of the invention, as long as they do not exceed the scope of the invention described in the claims.
Claims (6)
1. A 5G signal radio frequency distribution system, comprising:
an access unit for receiving and amplifying signals of a base station or a space;
the extension unit is used for dividing the signals input by the access unit into multiple paths and sending the multiple paths of signals to the multiple covering units;
a plurality of covering units, which are used for carrying out signal covering through a covering antenna after amplifying the received signals;
the access unit is connected with the extension unit through a radio frequency coaxial cable, and the extension unit is connected with the plurality of covering units through the radio frequency coaxial cable.
2. The 5G signal radio frequency distribution system according to claim 1, wherein the extension unit includes a 5G synchronization module, a power supply control switch, a power supply and a power divider, the 5G synchronization module is connected to the power supply control switch and the power divider, the power supply control switch is connected to the power supply and the power divider, the power divider is connected to the cover unit, the 5G synchronization module is configured to generate a TDD uplink and downlink switching timing control signal, and the timing control signal converts a direct current supplied to the cover unit into a direct current square wave carrying uplink and downlink timing characteristics through the power supply control switch.
3. The 5G signal radio frequency distribution system according to claim 2, wherein the power supply control switch is an MOS transistor, a gate of the MOS transistor is connected with a control end of the 5G synchronization module, and a drain of the MOS transistor is connected with a power supply.
4. The radio frequency distribution system for 5G signals according to claim 2, wherein the covering unit comprises a radio frequency amplification module, a DC rectification circuit and a comparator, an input end of the radio frequency amplification module, an input end of the DC rectification circuit and an input end of the comparator are all connected with the power divider, an output end of the DC rectification circuit is connected with a power supply end of the radio frequency amplification module, and an output end of the comparator is connected with a control end of the radio frequency amplification module.
5. The radio frequency distribution system for 5G signals according to claim 4, wherein the DC rectification circuit comprises a rectification diode and a filter capacitor, a DC pulse is input to an anode of the rectification diode, a rectification power supply is output to a cathode of the rectification diode and is grounded through the filter capacitor, a DC pulse is input to an anode of an input end of the comparator, and an output end of the comparator is connected to a control end of the radio frequency amplification module.
6. The 5G signal radio frequency distribution system according to claim 1, wherein the extension unit is star-connected with a plurality of coverage units.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911231375.8A CN110798843A (en) | 2019-12-05 | 2019-12-05 | 5G signal radio frequency distribution system |
| PCT/CN2019/124975 WO2021109203A1 (en) | 2019-12-05 | 2019-12-13 | 5g signal radio frequency distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911231375.8A CN110798843A (en) | 2019-12-05 | 2019-12-05 | 5G signal radio frequency distribution system |
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| CN110798843A true CN110798843A (en) | 2020-02-14 |
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| CN201911231375.8A Pending CN110798843A (en) | 2019-12-05 | 2019-12-05 | 5G signal radio frequency distribution system |
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| WO (1) | WO2021109203A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111917421A (en) * | 2020-08-12 | 2020-11-10 | 广州市瀚云信息技术有限公司 | 5G signal radio frequency conversion distribution system and coverage unit air interface synchronization method thereof |
| CN111988052A (en) * | 2020-07-30 | 2020-11-24 | 深圳市太赫兹科技创新研究院有限公司 | Receiving antenna circuit, transmitting antenna circuit and security check instrument |
| WO2021212690A1 (en) * | 2020-04-22 | 2021-10-28 | 广州市瀚云信息技术有限公司 | Public safety wireless network coverage enhanced distributed system |
| CN113727361A (en) * | 2021-08-20 | 2021-11-30 | 深圳国人无线通信有限公司 | Mobile network indoor signal coverage system |
| CN114157330A (en) * | 2021-12-21 | 2022-03-08 | 中信科移动通信技术股份有限公司 | Multi-service active distribution system |
| CN115833868A (en) * | 2023-02-14 | 2023-03-21 | 深圳国人无线通信有限公司 | Radio frequency far-end module and system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931468B (en) * | 2010-09-23 | 2013-06-12 | 武汉虹信通信技术有限责任公司 | Access system and method for transmitting Ethernet signal and mobile communication signal |
| CN106209240B (en) * | 2016-07-08 | 2019-01-18 | 武汉虹信通信技术有限责任公司 | A kind of novel multimode fibre compartment system |
| CN207117966U (en) * | 2017-08-24 | 2018-03-16 | 沈阳永成烽火科技有限公司 | LTE intelligence blind area covering access system |
| CN210641086U (en) * | 2019-12-05 | 2020-05-29 | 广州市瀚云信息技术有限公司 | 5G signal radio frequency distribution system |
-
2019
- 2019-12-05 CN CN201911231375.8A patent/CN110798843A/en active Pending
- 2019-12-13 WO PCT/CN2019/124975 patent/WO2021109203A1/en active Application Filing
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021212690A1 (en) * | 2020-04-22 | 2021-10-28 | 广州市瀚云信息技术有限公司 | Public safety wireless network coverage enhanced distributed system |
| CN111988052A (en) * | 2020-07-30 | 2020-11-24 | 深圳市太赫兹科技创新研究院有限公司 | Receiving antenna circuit, transmitting antenna circuit and security check instrument |
| CN111917421A (en) * | 2020-08-12 | 2020-11-10 | 广州市瀚云信息技术有限公司 | 5G signal radio frequency conversion distribution system and coverage unit air interface synchronization method thereof |
| CN113727361A (en) * | 2021-08-20 | 2021-11-30 | 深圳国人无线通信有限公司 | Mobile network indoor signal coverage system |
| CN114157330A (en) * | 2021-12-21 | 2022-03-08 | 中信科移动通信技术股份有限公司 | Multi-service active distribution system |
| WO2023115907A1 (en) * | 2021-12-21 | 2023-06-29 | 中信科移动通信技术股份有限公司 | Multi-service active distribution system |
| CN114157330B (en) * | 2021-12-21 | 2023-10-03 | 中信科移动通信技术股份有限公司 | Multi-service active distribution system |
| CN115833868A (en) * | 2023-02-14 | 2023-03-21 | 深圳国人无线通信有限公司 | Radio frequency far-end module and system |
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| Publication number | Publication date |
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| WO2021109203A1 (en) | 2021-06-10 |
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