CN215581725U - 5G electricity connection indoor coverage system - Google Patents
5G electricity connection indoor coverage system Download PDFInfo
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- CN215581725U CN215581725U CN202121992026.0U CN202121992026U CN215581725U CN 215581725 U CN215581725 U CN 215581725U CN 202121992026 U CN202121992026 U CN 202121992026U CN 215581725 U CN215581725 U CN 215581725U
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Abstract
The utility model discloses a 5G electric connection indoor coverage system which comprises a near-end machine and a far-end machine, wherein the input end of the near-end machine is connected with an information source, the output end of the far-end machine is connected with an antenna, and the near-end machine and the far-end machine are connected through a DAS (data acquisition System) room subsystem; the near-end machine comprises a frequency conversion module and a first multi-frequency combiner; the DAS indoor subsystem is used for transmitting the signal sent by the first multi-frequency combiner and sending the signal to the remote machine; the remote machine comprises a multiplexer, a first receiving and transmitting integrated power amplifier module and a second receiving and transmitting integrated power amplifier module. The utility model uses the coaxial feeder line as medium transmission, and can realize 4G and 5G MIMO coverage.
Description
Technical Field
The utility model belongs to the field of communication, and particularly relates to a 5G electric connection indoor coverage system.
Background
The fifth Generation Mobile Communication Technology (5th Generation Mobile Communication Technology, abbreviated as 5G) is a new Generation broadband Mobile Communication Technology with the characteristics of high speed, low time delay and large connection, and is a network infrastructure for realizing man-machine interconnection.
The band analysis of China allocated to the operator at 5G is used, the band of China mobile is 2515-2675MHz, the band of Unicom telecommunication is 3400-3600MHz, and the higher band (compared with the original 2G/3G/4G) causes larger attenuation in the transmission path and poorer penetrating power in microwave wireless transmission, which causes the reduction of the coverage area and the deterioration of the communication effect. The original indoor passive coverage system based on 2G \3G \4G frequency band application is difficult to meet the coverage requirement, and the MIMO technology is difficult to realize.
The existing indoor distributed antenna system (DAS system) adopts a high-power RRU as an information source, and transmits a signal of the information source to an antenna through passive devices such as a coaxial feeder line + a power divider/a coupler so as to meet indoor uniform coverage; in order to meet the requirement of uniform signal field intensity, the link distribution needs to be designed according to the field environment, the design is time-consuming, the deployment is complex, and the upgrading is difficult.
The DAS system has the advantages that: the high-power RRU, the passive device, the feeder line and the antenna are adopted, so that the antenna is stable and reliable, has low cost, and can meet the coverage of various communication systems in a multi-frequency combining way;
DAS system disadvantages: 1. along with the increase of the frequency of the communication carrier frequency, the attenuation of different frequencies is inconsistent, the higher the frequency is, the larger the attenuation of a link is, so that the output power of an antenna is reduced, the field intensity distribution of signals is uneven, and the coverage effect is deteriorated; 2. under the condition of single cable coverage, the coverage of MIMO signals is not supported; 3. the feeder line is not easy to bend and has heavy mass, so that the construction is difficult and the workload is large; 4. because the traditional indoor distribution system adopts more passive devices, when the system fails, the system cannot be monitored in real time, and when the system is subjected to troubleshooting, the troubleshooting is difficult and the period is long because the failure point cannot be judged.
In view of the above, the present invention is particularly proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a 5G electric connection indoor coverage system which uses a coaxial feeder line as a medium for propagation and can realize 4G and 5G MIMO coverage.
In order to achieve the purpose, the 5G electric connection indoor coverage system comprises a near-end machine and a far-end machine, wherein the input end of the near-end machine is connected with an information source, the output end of the far-end machine is connected with an antenna, and the near-end machine and the far-end machine are connected through a DAS indoor subsystem;
the near-end machine comprises a frequency conversion module and a first multi-frequency combiner; the input end of the first multi-frequency combiner is respectively connected with the 4G base station and the 5G base station through a frequency conversion module, wherein the frequency conversion module is used for carrying out frequency conversion on signals of the 4G base station and the 5G base station; the first multi-frequency combiner is also connected with a second multi-frequency combiner, and the second multi-frequency combiner is used for combining the 2G information source and the 3G information source and sending the combined 2G and 3G signals to the first multi-frequency combiner; the first multi-frequency combiner is used for combining the frequency-converted 4G and 5G signals and the combined 2G and 3G signals into a combined signal of one path;
the DAS indoor subsystem is used for receiving the signal sent by the first multi-frequency combiner and sending the signal to the remote machine;
the remote machine comprises a multiplexer, a first receiving and transmitting integrated power amplifier module and a second receiving and transmitting integrated power amplifier module; the input end of the multiplexer is used for receiving signals sent by the DAS indoor distribution system, classifying the signals, and sending the signals to the first receiving and sending integrated power amplifier module and the second receiving and sending integrated power amplifier module respectively after frequency conversion of a frequency conversion channel.
Further, the frequency conversion module is used for converting the 2110-2170MHz signal of the 4G base station into the 400-460MHz signal and converting the 3400-3600MHz signal of the 5G base station into the 500-700MHz signal.
Further, the multiplexer divides the signal into a 400-460MHz portion and a 500-700MHz portion.
Further, the frequency conversion path is used for up-converting the signal of the 400-460MHz part and reducing the signal into the amplified signal of the 2110-2170MHz working band, and up-converting the signal of the 500-700MHz part and reducing the signal into the amplified signal of the 3400-3600MHz working band.
Further, the 4G base station and the 5G base station adopt dual-channel base stations.
Further, the remote machine further comprises a network management monitor, which is used for monitoring the working state of the antenna in real time, and collecting and sending the monitoring information to the near-end machine for state and alarm reporting.
Further, the near-end unit supplies power to the far-end unit through a feeder line.
The 5G electric connection indoor coverage system provided by the utility model has the following beneficial effects:
1. the problem that MIMO signal transmission cannot be met when single-cable coverage is used is solved, and 4/5G MIMO coverage can be supported;
2. by the power compensation of the remote unit, the passive link loss caused by high frequency is compensated, even better than the coverage field intensity of a high-power RRU as an information source, and the coverage area and the coverage effect are improved;
3. the transformation construction is simple; the system has the network management function, gives a fault alarm, and is convenient to maintain and locate.
Drawings
Fig. 1 is a schematic structural diagram of a near-end unit of a 5G electrical connection indoor coverage system of the present invention.
Fig. 2 is a schematic structural diagram of a remote terminal of the 5G electric-connection indoor covering system of the utility model.
In the figure:
1. a near-end machine; 2. a remote machine; DAS indoor distribution system; 4.4G base stations; 5.5G base stations; 6. a second multi-frequency combiner; 101. a frequency conversion module; 102. a first multi-frequency combiner; 201. a multiplexer; 202. a transceiver power amplifier module; 203. a second transceiver-integrated power amplifier module; 204 and 205. frequency conversion path; 206. and a network management monitor.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the technical field better understand the scheme of the present invention.
As shown in fig. 1-2, the 5G electric-connection indoor covering system of the present invention comprises a near-end machine 1 and a far-end machine 2. The input end of near-end machine 1 is connected with the information source, and the output of distal end machine 2 is connected with the antenna, is connected through DAS room subsystem 3 between near-end machine 1 and the distal end machine 2 for the output signal of near-end machine 1 transmits to distal end machine 2 through DAS room subsystem 3.
The near-end machine 1 comprises a frequency conversion module 101 and a first multi-frequency combiner 102, wherein the input end of the first multi-frequency combiner 102 is connected with a 4G base station 4 and a 5G base station 5 through the frequency conversion module 101, the 4G base station 4 and the 5G base station 5 are dual-channel digital small base stations, and the base station information source output power is 500mW (27 dBm).
Specifically, the frequency conversion module 101 connected to the 4G base station 4 converts the frequency of the signal with the frequency range of 2110-2170MHz, the frequency range after frequency conversion is 400-460MHz, the frequency conversion module 101 connected to the 5G base station 5 converts the frequency of the signal with the frequency range of 3400-3600MHz, and the frequency range after frequency conversion is 500-700 MHz.
The 5G electric connection indoor coverage system further comprises a second multi-frequency combiner 6, the first multi-frequency combiner 102 of the near-end machine 1 is further connected with the second multi-frequency combiner 6, and the second multi-frequency combiner 6 is used for combining the 2G information source and the 3G information source and sending the combined 2G and 3G signals to the first multi-frequency combiner 102. The first multi-frequency combiner 102 combines the frequency-converted 4G and 5G signals and the combined 2G and 3G signals into a combined signal of one path.
The DAS indoor subsystem 3 receives the signal transmitted by the first multi-frequency combiner 102 and transmits it to the remote terminal 2.
By the near-end unit 1, 2G, 3G, 4G and 5G signals can be combined into one signal, MIMO transmission is achieved through single-cable coverage, and the MIMO signals can be transmitted through a single cable by adopting a frequency conversion processing mode.
In addition, the near-end machine 1 provides a working power supply for the far-end machine 2 through a direct-current feeder line power supply technology, such as a frequency conversion module, a power amplifier, a low-noise amplifier, a monitor and the like, namely, the near-end machine 1 and the far-end machine 2 transmit a combined signal and supply power to the far-end machine 2 in the system through a feeder line, and the difficulty of engineering construction and property coordination is reduced.
The remote machine 2 comprises a multiplexer 201, a first transceiver-integrated power amplifier module 202 and a second transceiver-integrated power amplifier module 203. The input end of the multiplexer 201 is used for receiving signals sent by the DAS indoor distribution system 3, classifying the signals, and respectively sending the signals to the first transceiver-integrated power amplifier module 202 and the second transceiver-integrated power amplifier module 203 after frequency conversion through the frequency conversion channels 204 and 205, and then sending the signals to the antenna.
Specifically, the multiplexer 201 may combine or split signals of multiple frequencies by a frequency division multiplexing method. In the embodiment, the multiplexer 201 divides the signal into 400-plus-460 MHz part and 500-plus-700 MHz part, the frequency conversion channel 204 performs up-conversion on the signal of 400-plus-460 MHz part, and restores the signal to the original amplified signal of 2110-plus-2170 MHz working frequency band, the output power of the amplified signal is 100mW (20dBm), and then the amplified signal is transmitted to the antenna through the first transceiver-integrated power amplifier module 202 for output; the frequency conversion path 205 up-converts the signal of 500-plus-700 MHz part, and restores the signal to the original amplified signal of 3400-plus-3600 MHz working frequency band, where the output power is 100mW (20dBm), and then sends the amplified signal to the antenna through the second transceiver-integrated power amplifier module 203 for output.
In addition, for the 2G and 3G signals received by the multiplexer 201, the multiplexer 201 branches the signals and directly connects the signals to the antenna for transmission.
The signals are amplified and the power is compensated through the frequency conversion paths 204 and 205, the output power is improved, and the coverage area of the signals is increased.
In addition, the remote 2 also includes a network management monitor 206. The multiplexer 201 is connected to the network management monitor 206, and is configured to monitor the operating status (including output power and reflected power) of the antenna in real time, and collect and send monitoring information to the near-end device for status and alarm uploading, so as to implement real-time uploading of alarm signals, and overcome the disadvantages of insufficient real-time monitoring and difficulty in fault location of the system.
The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the utility model. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.
Claims (7)
1. A5G electric connection indoor coverage system is characterized by comprising a near-end machine and a far-end machine, wherein the input end of the near-end machine is connected with an information source, the output end of the far-end machine is connected with an antenna, and the near-end machine and the far-end machine are connected through a DAS room subsystem;
the near-end machine comprises a frequency conversion module and a first multi-frequency combiner; the input end of the first multi-frequency combiner is respectively connected with the 4G base station and the 5G base station through a frequency conversion module, wherein the frequency conversion module is used for carrying out frequency conversion on signals of the 4G base station and the 5G base station; the first multi-frequency combiner is also connected with a second multi-frequency combiner, and the second multi-frequency combiner is used for combining the 2G information source and the 3G information source and sending the combined 2G and 3G signals to the first multi-frequency combiner; the first multi-frequency combiner is used for combining the frequency-converted 4G and 5G signals and the combined 2G and 3G signals into a combined signal of one path;
the DAS indoor subsystem is used for receiving the signal sent by the first multi-frequency combiner and sending the signal to the remote machine;
the remote machine comprises a multiplexer, a first receiving and transmitting integrated power amplifier module and a second receiving and transmitting integrated power amplifier module; the input end of the multiplexer is used for receiving signals sent by the DAS indoor distribution system, classifying the signals, and sending the signals to the first receiving and sending integrated power amplifier module and the second receiving and sending integrated power amplifier module respectively after frequency conversion of a frequency conversion channel.
2. The 5G electric-linkage indoor coverage system of claim 1, wherein the frequency conversion module is configured to convert the 2110-2170MHz signal of the 4G base station into 400-460MHz signal, and convert the 3400-3600MHz signal of the 5G base station into 500-700MHz signal.
3. The 5G electrical connection indoor coverage system of claim 2, wherein the multiplexer divides the signal into a 460MHz part of 400 and a 700MHz part of 500.
4. The 5G electric-linkage indoor coverage system of claim 3, wherein the frequency conversion path is used for up-converting and reducing signals of 400-and 460-MHz parts into amplified signals of 2110-and 2170MHz operating frequency bands, and up-converting and reducing signals of 500-and 700-MHz parts into amplified signals of 3400-and 3600MHz operating frequency bands.
5. The 5G electric-connection indoor coverage system of claim 1, wherein the 4G base station and the 5G base station adopt a dual-channel base station.
6. The 5G electric-coupler indoor coverage system according to claim 1, wherein the remote terminal further comprises a network management monitor for monitoring the working state of the antenna in real time, and summarizing and sending monitoring information to the near-end terminal for state and alarm reporting.
7. The 5G electric-link indoor covering system of claim 1, wherein the far-end machine is powered by the near-end machine through a feeder line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992026.0U CN215581725U (en) | 2021-08-23 | 2021-08-23 | 5G electricity connection indoor coverage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121992026.0U CN215581725U (en) | 2021-08-23 | 2021-08-23 | 5G electricity connection indoor coverage system |
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| CN215581725U true CN215581725U (en) | 2022-01-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114126020A (en) * | 2022-01-29 | 2022-03-01 | 深圳国人无线通信有限公司 | Frequency conversion network energy saving method and system compatible with 2/3/4/5G base station |
| CN114584161A (en) * | 2022-01-25 | 2022-06-03 | 江苏通鼎宽带有限公司 | Terminal antenna monitoring device is divided to 5G room |
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2021
- 2021-08-23 CN CN202121992026.0U patent/CN215581725U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114584161A (en) * | 2022-01-25 | 2022-06-03 | 江苏通鼎宽带有限公司 | Terminal antenna monitoring device is divided to 5G room |
| CN114126020A (en) * | 2022-01-29 | 2022-03-01 | 深圳国人无线通信有限公司 | Frequency conversion network energy saving method and system compatible with 2/3/4/5G base station |
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