CN218648978U - Low-cost 5G electricity federation indoor coverage system - Google Patents
Low-cost 5G electricity federation indoor coverage system Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a low-cost 5G electric connection indoor coverage system, which comprises a near-end unit and a far-end unit, wherein the input end of a multiplexer in the far-end unit is connected with the output end of a DAS indoor distribution system; the output end of the multiplexer is connected with the input ends of the first receiving-transmitting integrated power amplifier module and the second receiving-transmitting integrated power amplifier module directly or through a frequency conversion path respectively; the output ends of the first transceiving integral power amplifier module and the second transceiving integral power amplifier module are respectively connected with the input ends of the first transceiving integral multiplexing module and the second transceiving integral multiplexing module; the output ends of the first transceiving integrated multiplexing module and the second transceiving integrated multiplexing module are respectively connected with an antenna. The utility model has the advantages of to shift frequency and frequency multiplexing technique and combine together, under equal coverage area's prerequisite, through the mode of deploying near-end unit, a small amount of distal end unit and a large amount of antennas, reduced construction and operation cost, realize the low-cost indoor cover of 4G, 5G MIMO signal to the cover of compatible 2G, 3G signal.
Description
Technical Field
The utility model belongs to the technical field of the indoor coverage technique of 5G network and specifically relates to a low-cost indoor coverage system of 5G electricity federation is related to.
Background
Current wireless communication devices typically employ MIMO multi-stream on-channel carrier technology to increase channel capacity. In 2G/3G/4G wireless communication, an indoor Distributed System (DAS) adopts a high-power RRU (Radio Remote Unit) as an indoor information source, and transmits signals of the information source to a Remote Antenna through coaxial feeders and passive devices (such as power splitters, couplers and the like) with different specifications, so that indoor wireless signal coverage is realized.
However, in 5G wireless communication, the communication frequency band is higher than the 2G/3G/4G frequency band, which results in large signal attenuation in the transmission path, poor wireless transmission penetration force, reduced coverage area and poor communication effect. Therefore, the indoor distributed system originally applied to 2G/3G/4G is difficult to meet the coverage requirement of a 5G network in terms of frequency band compatibility and engineering implementation difficulty, and simultaneously, the MIMO technology is difficult to implement. At present, an electric linkage frequency shift room subsystem used in 5G wireless communication adopts a frequency conversion processing mode, so that a single cable transmits MIMO signals, and the output power is improved and the coverage area is increased by increasing power amplification and power compensation. In the mode, a remote machine with frequency shift, power amplification and power compensation capabilities needs to be deployed at each point position, so that the construction cost is increased; meanwhile, the remote machines are all power-consuming equipment, so that the operation cost is increased; and the front end of the remote machine is provided with a coupler or a power divider and other devices, so that the overall system loss is continuously increased along with the increase of the number of the remote machines. Further, for 2G/3G/4G/5G signals with different frequencies, the higher the frequency is, the larger the link attenuation is, so that the field intensity distribution of the signals in the same frequency band is not uniform, and the coverage effect is deteriorated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low-cost 5G electricity allies oneself with indoor coverage system.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model discloses a low-cost 5G electricity federation indoor coverage system, including near-end unit and distal end unit, the input of near-end unit is connected with the information source, the output of distal end unit is connected with the antenna, near-end unit and distal end unit pass through DAS room branch system and are connected;
the remote unit comprises a multiplexer, a frequency conversion path, a first receiving and transmitting integrated power amplifier module, a second receiving and transmitting integrated power amplifier module, a first receiving and transmitting integrated multiplexing module and a second receiving and transmitting integrated multiplexing module; the input end of the multiplexer is connected with the output end of the DAS indoor distribution system; the output end of the multiplexer is connected with the input ends of the first receiving and transmitting integrated power amplifier module and the second receiving and transmitting integrated power amplifier module directly or through a frequency conversion path respectively; the output ends of the first transceiving integral power amplifier module and the second transceiving integral power amplifier module are respectively connected with the input ends of the first transceiving integral multiplexing module and the second transceiving integral multiplexing module; the output ends of the first transceiving integrated multiplexing module and the second transceiving integrated multiplexing module are respectively connected with an antenna.
Furthermore, the remote unit is connected to a plurality of antennas through the first transceiving integral multiplexing module and the second transceiving integral multiplexing module respectively, so as to provide indoor signal coverage.
Further, the information sources connected with the near-end unit comprise a 4G base station and a 5G base station which adopt double channels, and a 2G information source and a 3G information source.
Further, the near-end unit supplies power to the far-end unit through a feeder line.
Furthermore, the remote unit further comprises a network management monitor for monitoring the working state of the antenna in real time, and collecting and sending the monitoring information to the near-end unit for state and alarm reporting.
Furthermore, the 4G base station and the 5G base station are connected to an input terminal of a first multi-frequency combiner in the near-end unit and are simultaneously connected to an input terminal of a frequency conversion module in the near-end unit, an output terminal of the frequency conversion module is connected to an input terminal of the first multi-frequency combiner, and an output terminal of the first multi-frequency combiner is connected to an input terminal of the DAS indoor distribution system.
Furthermore, the 2G signal source and the 3G signal source are connected with the input end of a second multi-frequency combiner in the near-end unit, the output end of the second multi-frequency combiner is connected with the input end of a first multi-frequency combiner, and the output end of the first multi-frequency combiner is connected with the input end of the DAS indoor distribution system.
Further, the frequency conversion module converts 2110-2170MHz signals of the 4G base station into 400-460MHz signals, and converts 3400-3600MHz signals of the 5G base station into 500-700MHz signals.
Further, the multiplexer sends a signal sent by the DAS indoor distribution system and passing through the frequency conversion module in the near-end unit to the frequency conversion path, and sends a signal that does not pass through the frequency conversion module in the near-end unit to the first transceiver-integrated power amplifier module or the second transceiver-integrated power amplifier module;
the frequency conversion channel up-converts 400-460MHz signals into 2110-2170MHz band amplified signals of 4G, and up-converts 500-700MHz signals into 3400-3600MHz band amplified signals of 5G.
The utility model has the advantages of to shift frequency and frequency multiplexing technique and combine together, under equal coverage area's prerequisite, through the mode of deploying near-end unit, a small amount of distal end unit and a large amount of antennas, reduced construction and operation cost, realize the low-cost indoor cover of 4G, 5G MIMO signal to the cover of compatible 2G, 3G signal.
Drawings
Fig. 1 is the utility model discloses a low-cost 5G electricity allies oneself with indoor coverage system near-end unit schematic diagram.
Fig. 2 is the utility model discloses a low-cost 5G electricity federation indoor coverage system remote unit schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the low-cost 5G electric connection indoor coverage system of the present invention includes a near-end unit 1 and a far-end unit 2. The input end of near-end unit 1 is connected with the information source, and the output of distal end unit 2 is connected with the antenna, is connected through DAS room branch system 3 between near-end unit 1 and the distal end unit 2 for the output signal of near-end unit 1 transmits to distal end unit 2 through DAS room branch system 3.
The near-end unit 1 includes a frequency conversion module 101 and a first multi-frequency combiner 102. The input end of the first multi-frequency combiner 102 is directly connected with the 4G base station 4 and the 5G base station 5, and is also connected with the 4G base station 4 and the 5G base station 5 through the frequency conversion module 101, wherein the 4G base station 4 and the 5G base station 5 select dual-channel digital small base stations, and the base station signal source output power is 500mW (27 dBm). The output end of the first multi-frequency combiner 102 is connected to the input end of the DAS indoor subsystem 3.
Specifically, the frequency conversion module 101 connected to the 4G base station 4 converts the frequency of the signal with the frequency band of 2110-2170MHz, the frequency band 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 band of 3400-3600MHz, and the frequency band after frequency conversion is 500-700MHz.
The near-end unit 1 further includes a second multi-frequency combiner 6, and the output end of the first multi-frequency combiner 102 is further connected to the input end of the second multi-frequency combiner 6. The input end of the second multi-frequency combiner 6 is connected to the 2G signal source and the 3G signal source line, and is configured to combine the 2G signal source and the 3G signal source, and send 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, the non-frequency-converted 4G and 5G signals, and the combined 2G and 3G signals into a combined signal of one path.
Namely, the near-end unit 1 can combine 2G, 3G, 4G and 5G signals into one signal, and the MIMO transmission is solved through single-cable coverage, and a frequency conversion processing mode is adopted, so that the MIMO signal can be transmitted through a single cable.
The DAS indoor subsystem 3 receives the signal transmitted by the first multi-frequency combiner 102 and transmits it to the remote unit 2.
The remote unit 2 includes a multiplexer 201, a first power amplifier module 202, a second power amplifier module 203, a first multiplexing module 204 and a second multiplexing module 205.
The input end of the multiplexer 201 is connected with the output end of the DAS indoor distribution system 3, and the output end of the multiplexer 201 is connected with the input ends of the first receiving-transmitting integrated power amplification module 202 and the second receiving-transmitting integrated power amplification module 203 respectively; the output ends of the first transceiving integral power amplifier module 202 and the second transceiving integral power amplifier module 203 are respectively connected with the input ends of the first transceiving integral multiplexing module 204 and the second transceiving integral multiplexing module 205, and the output ends of the first transceiving integral multiplexing module 204 and the second transceiving integral multiplexing module 205 are respectively connected with a plurality of antennas.
The input end of the multiplexer 201 is used for receiving signals sent by the DAS indoor distribution system 3, classifying the signals, respectively sending the signals without frequency conversion to the first transceiver-integrated power amplifier module 202 and the second transceiver-integrated power amplifier module 203, respectively sending the signals with frequency conversion 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 206 and 207, and then sending the signals to the plurality of antennas after respectively passing through the first transceiver-integrated multiplexing module 204 and the second transceiver-integrated multiplexing module 205.
The first and second duplexer modules 204 and 205 may each be connected to multiple antennas to provide signal coverage.
Specifically, the multiplexer 201 may combine signals of multiple frequencies by using a frequency division multiplexing method, or may split the signals. In the present embodiment, the multiplexer 201 performs a splitting process on the received signal, and transmits the 4G signal with the frequency band of 400-460MHz of the frequency conversion module 101 in the near-end unit 1 in the DAS indoor subsystem 3 to the frequency conversion path 206 for up-conversion, and the signal is restored to the original amplified signal with the frequency band of the 4G signal with 2110-2170MHz, and the output power thereof is 100mW (20 dBm). And then the original 4G signal and the restored 4G signal are sent to a plurality of antennas through the first transceiver-integrated power amplifier module 202 and the first transceiver-integrated multiplexing module 204 for output. Meanwhile, the multiplexer 201 also sends the 5G signals with the frequency band of 500-700MHz passing through the frequency conversion module 101 in the near-end unit 1 in the DAS indoor subsystem 3 to the frequency conversion path 207 for up-conversion, and restores the signals to the original amplified signals with the frequency band of 3400-3600MHz, wherein the output power of the amplified signals is 100mW (20 dBm), and then the original 3400-3600MHz 5G signals and the restored 3400-3600MHz 5G signals are sent to the plurality of antennas through the second transmit-receive integrated power amplifier module 203 and the second transmit-receive integrated multiplexing module 205 for output.
In addition, the multiplexer 201 directly splits the received 2G and 3G signals, amplifies the signals by the first transceiver-integrated power amplifier module 202 or the second transceiver-integrated power amplifier module 203, and transmits the signals to the first transceiver-integrated multiplexing module 204 or the second transceiver-integrated multiplexing module 205, and then transmits the signals to a plurality of antennas for transmission.
The remote unit 2 further comprises a network management monitor 208. The multiplexer 201 is connected to the network management monitor 208, and is configured to monitor the operating status (including output power and reflected power) of the antenna in real time, and collect and send the monitoring information to the near-end unit for status and alarm uploading, thereby implementing real-time uploading of alarm signals, and making up for the defects of insufficient real-time monitoring and difficulty in fault location of the system.
The remote unit 2 is supplied with working power by the near-end unit 1 through a direct current feeder line power supply technology. Namely, the near-end unit 1 and the far-end unit 2 transmit the combined signals and supply power to the far-end unit 2 in the system through the feeder line, so that the difficulty of engineering construction and property coordination is reduced.
Claims (9)
1. A low-cost 5G electric connection indoor coverage system comprises a near-end unit and a far-end unit, wherein the input end of the near-end unit is connected with an information source, the output end of the far-end unit is connected with an antenna, and the near-end unit and the far-end unit are connected through a DAS indoor distribution system;
the method is characterized in that: the remote unit comprises a multiplexer, a frequency conversion path, a first receiving and transmitting integrated power amplifier module, a second receiving and transmitting integrated power amplifier module, a first receiving and transmitting integrated multiplexing module and a second receiving and transmitting integrated multiplexing module; the input end of the multiplexer is connected with the output end of the DAS indoor distribution system; the output end of the multiplexer is connected with the input ends of the first receiving and transmitting integrated power amplifier module and the second receiving and transmitting integrated power amplifier module directly or through a frequency conversion path respectively; the output ends of the first transceiving integral power amplifier module and the second transceiving integral power amplifier module are respectively connected with the input ends of the first transceiving integral multiplexing module and the second transceiving integral multiplexing module; the output ends of the first transceiving integrated multiplexing module and the second transceiving integrated multiplexing module are respectively connected with an antenna.
2. The low-cost 5G electric-link indoor coverage system of claim 1, wherein: the remote unit is simultaneously and respectively connected with a plurality of antennas through the first transceiving integrated multiplexing module and the second transceiving integrated multiplexing module to provide indoor signal coverage.
3. The low-cost 5G electric-link indoor coverage system of claim 1, wherein: the information sources connected with the near-end unit comprise a 4G base station and a 5G base station which adopt double channels, and a 2G information source and a 3G information source.
4. The low-cost 5G electric-link indoor coverage system of claim 1, wherein: the near-end unit supplies power to the far-end unit through a feeder line.
5. The low-cost 5G electric-link indoor coverage system of claim 1, wherein: the far-end unit also comprises a network management monitor which is used for monitoring the working state of the antenna in real time and gathering the monitoring information and sending the gathered monitoring information to the near-end unit for state and alarm reporting.
6. The low-cost 5G electric-link indoor coverage system of claim 3, wherein: the 4G base station and the 5G base station are connected with the input end of a first multi-frequency combiner in the near-end unit and are also connected with the input end of a frequency conversion module in the near-end unit, the output end of the frequency conversion module is connected with the input end of the first multi-frequency combiner, and the output end of the first multi-frequency combiner is connected with the input end of the DAS indoor distribution system.
7. The low-cost 5G electric-connection indoor covering system of claim 6, wherein: the 2G information source and the 3G information source are connected with the input end of a second multi-frequency combiner in the near-end unit, the output end of the second multi-frequency combiner is connected with the input end of a first multi-frequency combiner, and the output end of the first multi-frequency combiner is connected with the input end of the DAS room subsystem.
8. The low-cost 5G electric-link indoor coverage system of claim 6, wherein: the frequency conversion module converts the 2110-2170MHz signal of the 4G base station into a 400-460MHz signal and converts the 3400-3600MHz signal of the 5G base station into a 500-700MHz signal.
9. The low-cost 5G electric-link indoor coverage system of claim 8, wherein: the multiplexer sends a signal which is sent in the DAS indoor distribution system and passes through the frequency conversion module in the near-end unit to the frequency conversion channel, and sends a signal which does not pass through the frequency conversion module in the near-end unit to the first transceiving integrated power amplifier module or the second transceiving integrated power amplifier module;
the frequency conversion channel up-converts 400-460MHz signals into 2110-2170MHz band amplified signals of 4G, and up-converts 500-700MHz signals into 3400-3600MHz band amplified signals of 5G.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223060647.2U CN218648978U (en) | 2022-11-18 | 2022-11-18 | Low-cost 5G electricity federation indoor coverage system |
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| CN202223060647.2U CN218648978U (en) | 2022-11-18 | 2022-11-18 | Low-cost 5G electricity federation indoor coverage system |
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