CN113966015A - Air-coupled 5G NR TDD system multichannel signal zoom-out system - Google Patents
Air-coupled 5G NR TDD system multichannel signal zoom-out system Download PDFInfo
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- CN113966015A CN113966015A CN202111362831.XA CN202111362831A CN113966015A CN 113966015 A CN113966015 A CN 113966015A CN 202111362831 A CN202111362831 A CN 202111362831A CN 113966015 A CN113966015 A CN 113966015A
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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
- H04W88/085—Access point devices with remote components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
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- Computer Networks & Wireless Communication (AREA)
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- Electromagnetism (AREA)
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Abstract
The invention relates to an air-coupled 5G NR TDD multichannel signal zooming system which comprises a near-end unit and a far-end unit, wherein the near-end unit is used for coupling a 5G NR TDD multichannel signal in the air and zooming to the far-end unit through an optical fiber to complete signal coverage of a coverage area. The system receives signals by adopting aerial coupling, does not need an optical cable between the 5G base station and the remote unit, is easy to realize, has low construction cost and can be suitable for various application scenes.
Description
Technical Field
The invention belongs to the technical field of wireless communication, and particularly relates to a space-coupling type 5G NR TDD system multichannel signal zooming system.
Background
In scenes such as subways, highway tunnels, railway tunnels, underground pipe galleries and the like, the 5G base station has no light path resources to the scenes, and if the 5G base station is newly built, an optical cable needs to be laid again, so that the construction cost is high, the construction period is long, and the popularization and the application of the 5G are not facilitated.
Disclosure of Invention
The invention aims to provide an air-coupled 5G NR TDD system multichannel signal zooming system, which receives 5G signals by adopting air coupling without an optical cable between a 5G base station and a remote unit, is easy to realize, low in construction cost and wide in application range.
In order to achieve the purpose, the invention adopts the technical scheme that: an air-coupled 5G NR TDD system multichannel signal zooming system comprises a near-end unit and a far-end unit; the near-end unit receives a 5G NR TDD system downlink signal of a 5G multichannel base station in an air coupling mode in a downlink, the downlink signal enters a first radio frequency switch and a second radio frequency switch through a first filter and a second filter respectively, the first radio frequency switch and the second radio frequency switch complete clock synchronization with the 5G multichannel base station through a synchronous control signal demodulated from the 5G NR signal by a first FPGA, the 5G NR TDD system first downlink signal and the second downlink signal respectively enter a first low noise amplifier and a second low noise amplifier, then enter a first down-conversion and a second down-conversion to be down-converted into a first down intermediate frequency signal and a second down intermediate frequency signal, the first down-conversion digital signal and the second down-conversion digital signal are converted into a first down-conversion digital signal and a second down-conversion digital signal through a first DAC and a second DAC respectively and enter the first FPGA, and the first FPGA processes the first down-conversion digital signal and the second down-conversion digital signal, the first FPGA also demodulates a synchronous control signal from the 5G NR TDD system to synchronously control the first radio frequency switch and the second radio frequency switch, and the processed first downlink digital signal, the second downlink digital signal and the synchronous control signal are framed according to a CPRI protocol and converted into a downlink digital signal of the CPRI protocol and then transmitted to a remote unit through a digital optical module; the near-end unit receives an uplink digital signal transmitted from the far-end unit through an optical fiber in an uplink, the uplink digital signal is transmitted into a first FPGA for signal processing, the first uplink digital signal and a second uplink digital signal are converted into a first ADC (analog to digital converter), a second ADC digital-to-analog converter and a first uplink intermediate frequency signal and a second uplink intermediate frequency signal respectively, the first uplink signal and the second uplink signal respectively enter a first radio frequency switch and a second radio frequency switch in a 5G NR (noise-reduced) TDD (time division duplex) mode, clock synchronization with the 5G multichannel base station is completed under the control of a synchronous control signal, and the first radio frequency switch and the second radio frequency switch respectively return to an uplink channel of the 5G multichannel base station;
the remote unit receives a downlink digital signal transmitted from the near-end unit through an optical fiber in a downlink, the downlink digital signal enters a second FPGA for signal processing, a common-frequency control signal, a first downlink digital signal and a second downlink digital signal are demodulated, the first downlink digital signal and the second downlink digital signal respectively enter a third ADC and a fourth ADC for digital-to-analog conversion into a first downlink intermediate-frequency signal and a second downlink intermediate-frequency signal, respectively enter a third up-conversion and a fourth up-conversion into a first downlink signal and a second downlink signal of a 5G NR TDD system, respectively enter a third power amplifier and a fourth power amplifier for power amplification, respectively enter a third radio frequency switch and a fourth radio frequency switch, and are synchronized with a clock of the 5G multichannel base station under the control of a synchronous control signal, respectively enter a third filter and a fourth filter, The fourth filter covers the coverage area through the first retransmission antenna and the second retransmission antenna; the remote unit receives a 5G NR TDD system uplink signal of a 5G mobile phone in an air coupling mode in an uplink, the received signal respectively enters a third radio frequency switch and a fourth radio frequency switch through a third filter and a fourth filter, the third radio frequency switch and the fourth radio frequency switch complete clock synchronization with a 5G multichannel base station through a synchronization control signal, a 5G NR TDD system first uplink signal and a 5G NR TDD system second uplink signal respectively enter a third low-noise amplifier and a fourth low-noise amplifier, the signals enter a third down-conversion and a fourth down-conversion to be down-converted into a first uplink intermediate frequency signal and a second uplink intermediate frequency signal, the signals are respectively converted into a first uplink digital signal and a second uplink digital signal through a third DAC and a fourth DAC, the signals enter a second FPGA, the second FPGA performs signal processing on the first uplink digital signal and the second uplink digital signal, and the processed first uplink digital signal, And the second uplink digital signal is framed according to the CPRI protocol and converted into an uplink digital signal of the CPRI protocol, and then is transmitted to the near-end unit through the digital optical module.
Further, the near-end unit comprises a first filter, a second filter, a first radio frequency switch, a second radio frequency switch, a first low-noise amplifier, a second low-noise amplifier, a first power amplifier, a second power amplifier, a first up-conversion, a second up-conversion, a first down-conversion, a second down-conversion, a first ADC, a second ADC, a first DAC, a second DAC and a first FPGA; the first filter, the first radio frequency switch, the first low noise amplifier, the first down-conversion, the first DAC and the first FPGA are sequentially connected, and the second filter, the second radio frequency switch, the second low noise amplifier, the second down-conversion, the second DAC and the first FPGA are sequentially connected to form a 5G NR TDD system multichannel signal downlink; the first FPGA, the first ADC, the first up-conversion, the first power amplifier, the first radio frequency switch and the first filter are sequentially connected, and the first FPGA, the second ADC, the second up-conversion, the second power amplifier, the second radio frequency switch and the second filter are sequentially connected to form a 5G NR TDD system multichannel signal uplink.
Further, the synchronous control signals of the first radio frequency switch and the second radio frequency switch are provided by the first FPGA through demodulation.
Further, the remote unit includes a second FPGA, a third ADC, a fourth ADC, a third DAC, a fourth DAC, a third up-conversion, a fourth up-conversion, a third down-conversion, a fourth down-conversion, a third low-noise amplifier, a fourth low-noise amplifier, a third power amplifier, a fourth power amplifier, a third rf switch, a fourth rf switch, a third filter, and a fourth filter; the second FPGA, the third ADC, the third up-conversion, the third power amplifier, the third radio frequency switch and the third filter are sequentially connected, and the second FPGA, the fourth ADC, the fourth up-conversion, the fourth power amplifier, the fourth radio frequency switch and the fourth filter are sequentially connected to form a 5G NR TDD system multichannel signal downlink; the third filter, the third radio frequency switch, the third low noise amplifier, the third down-conversion, the third DAC and the second FPGA are sequentially connected, and the fourth filter, the fourth radio frequency switch, the fourth low noise amplifier, the fourth down-conversion, the fourth DAC and the second FPGA are sequentially connected to form a 5G NR TDD multichannel signal uplink.
Further, the synchronous control signals of the third radio frequency switch and the fourth radio frequency switch are provided by demodulation of a second FPGA.
The system further comprises a near-end unit and a plurality of far-end units, wherein the near-end unit is in wireless communication with the 5G multichannel base station, the near-end unit is connected with each far-end unit through optical fibers, and each far-end unit is in wireless communication with the 5G mobile phone.
Compared with the prior art, the invention has the following beneficial effects: the system receives 5G signals through air coupling, the number of information sources can be selected, optical cables do not need to be laid between a 5G base station and a far-end unit, construction cost is reduced, the near-end unit and the far-end unit are properly pulled away through field operation optical cables, the system can be suitable for more scenes, such as subways, highway tunnels, railway tunnels, underground pipe galleries and the like, and receiving and transmitting isolation degree is also guaranteed. Therefore, the invention has strong practicability and wide application prospect.
Drawings
Fig. 1 is a block diagram of a system architecture of an embodiment of the present invention.
Fig. 2 is a schematic block diagram of a remote unit and an implementation of the remote unit in an embodiment of the invention.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 and 2, the present embodiment provides a space-coupled 5G NR TDD multi-channel signal remote system, which includes a near-end unit and a far-end unit. In this embodiment, the wireless communication system includes a plurality of remote units, the near-end unit performs wireless communication with a 5G multi-channel base station, the near-end unit is connected with each remote unit through an optical fiber, and each remote unit performs wireless communication with a 5G mobile phone.
The near-end unit receives a 5G NR TDD system downlink signal of a 5G multichannel base station in an air coupling mode in a downlink, the downlink signal enters a radio frequency switch 1 and a radio frequency switch 2 through a filter 1 and a filter 2 respectively, a synchronous control signal demodulated from the 5G NR signal by the radio frequency switch 1 and the radio frequency switch 2 through an FPGA1 completes clock synchronization with the 5G multichannel base station, the 5G NR TDD system downlink signal 1 and the downlink signal 2 enter a low-noise amplifier 1 and a low-noise amplifier 2 respectively, the signals enter a down-conversion 1 and a down-conversion 2 to be down-converted into a downlink intermediate frequency signal 1 and a downlink intermediate frequency signal 2, the signals are converted into a downlink digital signal 1 and a downlink digital signal 2 through a DAC1 and a DAC2 respectively, the downlink digital signal 1 and the downlink digital signal 2 enter an FPGA1, the FPGA1 performs signal processing on the downlink digital signal 1 and the downlink digital signal 2, the FPGA1 also demodulates the synchronous control signal from the 5G NR TDD system to the radio frequency switch 1, The radio frequency switch 2 carries out synchronous control, the processed downlink digital signal 1, the downlink digital signal 2 and the synchronous control signal are converted into downlink digital signals of CPRI protocol according to CPRI protocol framing, and then the downlink digital signals are transmitted to a remote unit through a digital optical module.
The near-end unit receives an uplink digital signal transmitted from the far-end unit through an optical fiber in an uplink, the uplink digital signal enters the FPGA1 for signal processing, the uplink digital signal 1 and the uplink digital signal 2 which are converted into the uplink digital signal enter the ADC1 and the ADC2 respectively, the uplink digital signal 1 and the uplink digital signal 2 which are subjected to digital-to-analog conversion into an uplink intermediate frequency signal 1 and an uplink intermediate frequency signal 2, the uplink digital signal 1 and the uplink digital signal 2 which are subjected to up-conversion into a 5G NR TDD system uplink signal 1 and an uplink signal 2 respectively enter the radio frequency switch 1 and the radio frequency switch 2, clock synchronization with the 5G multi-channel base station is completed under the control of a synchronization control signal, and the clock synchronization with the 5G multi-channel base station is returned to an uplink channel of the 5G multi-channel base station through the radio frequency switch 1 and the radio frequency switch 2 respectively.
The digital optical module in the downlink receives downlink digital signals transmitted from the near-end unit through the optical fiber, the downlink digital signals enter the FPGA2 for signal processing, a common-frequency control signal, a downlink digital signal 1 and a downlink digital signal 2 are demodulated, the downlink digital signal 1 and the downlink digital signal 2 respectively enter the ADC3 and the ADC4 for digital-to-analog conversion into a downlink intermediate-frequency signal 1 and a downlink intermediate-frequency signal 2, respectively enter the up-conversion 3 and the up-conversion 4 for up-conversion into a 5G NR TDD system downlink signal 1, the downlink signals 2 respectively enter a power amplifier 3 and a power amplifier 4 for power amplification and then enter a radio frequency switch 3 and a radio frequency switch 4, the radio frequency switch 3 and the radio frequency switch 4 complete clock synchronization with a 5G multi-channel base station under the control of a synchronous control signal, and the downlink signals respectively enter a filter 3 and a filter 4 to cover a coverage area through a retransmission antenna 1 and a retransmission antenna 2.
The remote unit receives 5G NR TDD system uplink signals of a 5G mobile phone in an air coupling mode in an uplink, the signals respectively enter a radio frequency switch 3 and a radio frequency switch 4 through a filter 3 and a filter 4, the radio frequency switch 3 and the radio frequency switch 4 finish clock synchronization with a 5G multichannel base station through a synchronization control signal, a 5G NR TDD system uplink signal 1 and an uplink signal 2 respectively enter a low noise amplifier 3 and a low noise amplifier 4 to be amplified and then enter a down-conversion 3 and a down-conversion 4 to be down-converted into an uplink intermediate frequency signal 1 and an uplink intermediate frequency signal 2, the signals are respectively converted into an uplink digital signal 1 and an uplink digital signal 2 through a DAC3 and a DAC4 to enter an FPGA2, the FPGA2 performs signal processing on the uplink digital signal 1 and the uplink digital signal 2, and the processed uplink digital signal 1 and the uplink digital signal 2 are converted into uplink digital signals of a CPRI protocol according to a CPRI protocol group frame, and then transmitted to the near-end unit through the digital optical module.
In this embodiment, the near-end unit includes a filter 1, a filter 2, a radio frequency switch 1, a radio frequency switch 2, a low-noise amplifier 1, a low-noise amplifier 2, a power amplifier 1, a power amplifier 2, an up-conversion 1, an up-conversion 2, a down-conversion 1, a down-conversion 2, an ADC1, an ADC2, a DAC1, a DAC2, and an FPGA 1; the filter 1, the radio frequency switch 1, the low noise amplifier 1, the down converter 1, the DAC1 and the FPGA1 are sequentially connected, and the filter 2, the radio frequency switch 2, the low noise amplifier 2, the down converter 2, the DAC2 and the FPGA1 are sequentially connected to form a 5G NR TDD multichannel signal downlink; the FPGA1, the ADC1, the up-conversion 1, the power amplifier 1, the radio frequency switch 1 and the filter 1 are sequentially connected, and the FPGA1, the ADC2, the up-conversion 2, the power amplifier 2, the radio frequency switch 2 and the filter 2 are sequentially connected to form a 5G NR TDD multichannel signal uplink. The synchronous control signals of the radio frequency switch 1 and the radio frequency switch 2 are demodulated and provided by the FPGA 1.
In this embodiment, the remote units include FPGA2, ADC3, ADC4, DAC3, DAC4, up-converter 3, up-converter 4, down-converter 3, down-converter 4, low-noise amplifier 3, low-noise amplifier 4, power amplifier 3, power amplifier 4, radio frequency switch 3, radio frequency switch 4, filter 3, and filter 4; the FPGA2, the ADC3, the up-conversion 3, the power amplifier 3, the radio frequency switch 3 and the filter 3 are sequentially connected, and the FPGA2, the ADC4, the up-conversion 4, the power amplifier 4, the radio frequency switch 4 and the filter 4 are sequentially connected to form a 5G NR TDD multichannel signal downlink; the filter 3, the radio frequency switch 3, the low noise amplifier 3, the down converter 3, the DAC3 and the FPGA2 are sequentially connected, and the filter 4, the radio frequency switch 4, the low noise amplifier 4, the down converter 4, the DAC4 and the FPGA2 are sequentially connected to form a 5G NR TDD multichannel signal uplink. The synchronous control signals of the radio frequency switch 3 and the radio frequency switch 4 are demodulated and provided by the FPGA 2.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (6)
1. An air-coupled 5G NR TDD system multichannel signal zoom-out system is characterized by comprising a near-end unit and a far-end unit; the near-end unit receives a 5G NR TDD system downlink signal of a 5G multichannel base station in an air coupling mode in a downlink, the downlink signal enters a first radio frequency switch and a second radio frequency switch through a first filter and a second filter respectively, the first radio frequency switch and the second radio frequency switch complete clock synchronization with the 5G multichannel base station through a synchronous control signal demodulated from the 5G NR signal by a first FPGA, the 5G NR TDD system first downlink signal and the second downlink signal respectively enter a first low noise amplifier and a second low noise amplifier, then enter a first down-conversion and a second down-conversion to be down-converted into a first down intermediate frequency signal and a second down intermediate frequency signal, the first down-conversion digital signal and the second down-conversion digital signal are converted into a first down-conversion digital signal and a second down-conversion digital signal through a first DAC and a second DAC respectively and enter the first FPGA, and the first FPGA processes the first down-conversion digital signal and the second down-conversion digital signal, the first FPGA also demodulates a synchronous control signal from the 5G NR TDD system to synchronously control the first radio frequency switch and the second radio frequency switch, and the processed first downlink digital signal, the second downlink digital signal and the synchronous control signal are framed according to a CPRI protocol and converted into a downlink digital signal of the CPRI protocol and then transmitted to a remote unit through a digital optical module; the near-end unit receives an uplink digital signal transmitted from the far-end unit through an optical fiber in an uplink, the uplink digital signal is transmitted into a first FPGA for signal processing, the first uplink digital signal and a second uplink digital signal are converted into a first ADC (analog to digital converter), a second ADC digital-to-analog converter and a first uplink intermediate frequency signal and a second uplink intermediate frequency signal respectively, the first uplink signal and the second uplink signal respectively enter a first radio frequency switch and a second radio frequency switch in a 5G NR (noise-reduced) TDD (time division duplex) mode, clock synchronization with the 5G multichannel base station is completed under the control of a synchronous control signal, and the first radio frequency switch and the second radio frequency switch respectively return to an uplink channel of the 5G multichannel base station;
the remote unit receives a downlink digital signal transmitted from the near-end unit through an optical fiber in a downlink, the downlink digital signal enters a second FPGA for signal processing, a common-frequency control signal, a first downlink digital signal and a second downlink digital signal are demodulated, the first downlink digital signal and the second downlink digital signal respectively enter a third ADC and a fourth ADC for digital-to-analog conversion into a first downlink intermediate-frequency signal and a second downlink intermediate-frequency signal, respectively enter a third up-conversion and a fourth up-conversion into a first downlink signal and a second downlink signal of a 5G NR TDD system, respectively enter a third power amplifier and a fourth power amplifier for power amplification, respectively enter a third radio frequency switch and a fourth radio frequency switch, and are synchronized with a clock of the 5G multichannel base station under the control of a synchronous control signal, respectively enter a third filter and a fourth filter, The fourth filter covers the coverage area through the first retransmission antenna and the second retransmission antenna; the remote unit receives a 5G NR TDD system uplink signal of a 5G mobile phone in an air coupling mode in an uplink, the received signal respectively enters a third radio frequency switch and a fourth radio frequency switch through a third filter and a fourth filter, the third radio frequency switch and the fourth radio frequency switch complete clock synchronization with a 5G multichannel base station through a synchronization control signal, a 5G NR TDD system first uplink signal and a 5G NR TDD system second uplink signal respectively enter a third low-noise amplifier and a fourth low-noise amplifier, the signals enter a third down-conversion and a fourth down-conversion to be down-converted into a first uplink intermediate frequency signal and a second uplink intermediate frequency signal, the signals are respectively converted into a first uplink digital signal and a second uplink digital signal through a third DAC and a fourth DAC, the signals enter a second FPGA, the second FPGA performs signal processing on the first uplink digital signal and the second uplink digital signal, and the processed first uplink digital signal, And the second uplink digital signal is framed according to the CPRI protocol and converted into an uplink digital signal of the CPRI protocol, and then is transmitted to the near-end unit through the digital optical module.
2. The system of claim 1, wherein the near-end unit comprises a first filter, a second filter, a first rf switch, a second rf switch, a first low-noise amplifier, a second low-noise amplifier, a first power amplifier, a second power amplifier, a first up-conversion, a second up-conversion, a first down-conversion, a second down-conversion, a first ADC, a second ADC, a first DAC, a second DAC, and a first FPGA; the first filter, the first radio frequency switch, the first low noise amplifier, the first down-conversion, the first DAC and the first FPGA are sequentially connected, and the second filter, the second radio frequency switch, the second low noise amplifier, the second down-conversion, the second DAC and the first FPGA are sequentially connected to form a 5G NR TDD system multichannel signal downlink; the first FPGA, the first ADC, the first up-conversion, the first power amplifier, the first radio frequency switch and the first filter are sequentially connected, and the first FPGA, the second ADC, the second up-conversion, the second power amplifier, the second radio frequency switch and the second filter are sequentially connected to form a 5G NR TDD system multichannel signal uplink.
3. The space-coupled 5G NR TDD multichannel signal remote system according to claim 2, wherein the synchronous control signals of the first rf switch and the second rf switch are demodulated by the first FPGA.
4. The system of claim 1, wherein the remote unit comprises a second FPGA, a third ADC, a fourth ADC, a third DAC, a fourth DAC, a third up-conversion, a fourth up-conversion, a third down-conversion, a fourth down-conversion, a third low-noise amplifier, a fourth low-noise amplifier, a third power amplifier, a fourth power amplifier, a third rf switch, a fourth rf switch, a third filter, and a fourth filter; the second FPGA, the third ADC, the third up-conversion, the third power amplifier, the third radio frequency switch and the third filter are sequentially connected, and the second FPGA, the fourth ADC, the fourth up-conversion, the fourth power amplifier, the fourth radio frequency switch and the fourth filter are sequentially connected to form a 5G NR TDD system multichannel signal downlink; the third filter, the third radio frequency switch, the third low noise amplifier, the third down-conversion, the third DAC and the second FPGA are sequentially connected, and the fourth filter, the fourth radio frequency switch, the fourth low noise amplifier, the fourth down-conversion, the fourth DAC and the second FPGA are sequentially connected to form a 5G NR TDD multichannel signal uplink.
5. The system as claimed in claim 4, wherein the synchronous control signals of the third RF switch and the fourth RF switch are demodulated by the second FPGA.
6. The system as claimed in claim 1, comprising a near end unit and a plurality of far end units, wherein the near end unit is in wireless communication with the 5G multichannel base station, the near end unit is connected with each far end unit through an optical fiber, and each far end unit is in wireless communication with the 5G mobile phone.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111362831.XA CN113966015A (en) | 2021-11-17 | 2021-11-17 | Air-coupled 5G NR TDD system multichannel signal zoom-out system |
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| CN202111362831.XA CN113966015A (en) | 2021-11-17 | 2021-11-17 | Air-coupled 5G NR TDD system multichannel signal zoom-out system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021819A (en) * | 2022-06-06 | 2022-09-06 | 中邮科通信技术股份有限公司 | 5G optical fiber remote system and method supporting MIMO function |
| CN116170831A (en) * | 2023-01-16 | 2023-05-26 | 上海山源电子科技股份有限公司 | Data multichannel transmission method, device, equipment and medium based on 5G network |
-
2021
- 2021-11-17 CN CN202111362831.XA patent/CN113966015A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021819A (en) * | 2022-06-06 | 2022-09-06 | 中邮科通信技术股份有限公司 | 5G optical fiber remote system and method supporting MIMO function |
| CN115021819B (en) * | 2022-06-06 | 2024-02-23 | 中邮科通信技术股份有限公司 | 5G optical fiber remote system and method supporting MIMO function |
| CN116170831A (en) * | 2023-01-16 | 2023-05-26 | 上海山源电子科技股份有限公司 | Data multichannel transmission method, device, equipment and medium based on 5G network |
| CN116170831B (en) * | 2023-01-16 | 2023-09-12 | 上海山源电子科技股份有限公司 | Data multichannel transmission method, device, equipment and medium based on 5G network |
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