CN114157330B - Multi-service active distribution system - Google Patents
Multi-service active distribution system Download PDFInfo
- Publication number
- CN114157330B CN114157330B CN202111574815.7A CN202111574815A CN114157330B CN 114157330 B CN114157330 B CN 114157330B CN 202111574815 A CN202111574815 A CN 202111574815A CN 114157330 B CN114157330 B CN 114157330B
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- signals
- module
- antenna ant
- active antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- 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
- H04W16/20—Network planning tools for indoor coverage or short range network deployment
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a multi-service active distribution system, which comprises: the upper-level forwarding access equipment is a preset standard base station and is used for providing a preset standard radio frequency signal; the distribution unit MU is used for dividing the amplified power of the preset system radio frequency signal into output signals with equal multi-path power, synchronously transmitting the output direct current electric signal and the radio frequency signal to the active antenna Ant, and providing cascade connection with other distribution units MU; the active antenna Ant is used for receiving the direct current electric signals output by the MU and the radio frequency signals subjected to amplification processing, so that local power supply of the active antenna Ant and receiving, amplifying and covering of wireless signals are realized, and cascade remote and local power supply of the radio frequency signals of other active antennas Ant are provided. The invention realizes the transmission and coverage of multimode and multiservice, and has the advantages of high stability of remote transmission of radio frequency signals, effective reduction of system coverage construction cost and saving of system power consumption.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a multi-service active distribution system.
Background
In the traditional indoor wireless coverage scheme, when the feeder line link frequency of a passive DAS (Distributed Antenna System ) can only support frequencies above 3G and 3G for wireless coverage, the passive DAS system and passive devices in the current indoor cannot be directly utilized for implementation, the loss of the passive devices at the frequencies above 3G is very large, the improvement of the traditional DAS system needs to promote index optimization and device upgrading of the passive devices, and the implementation period is long and the difficulty is large; meanwhile, at least 2x2 MIMO (Multiple-Input Multiple-Output) is needed in 5G evolution, the traditional passive DAS indoor coverage distribution system is basically single antenna coverage in engineering and construction, the 5G multi-stream coverage evolution cannot be satisfied, even if the number of 5G stations is increased, the 3.5GHz and 4.8GHz corresponding to the 5G frequency points are more prominent in the deep penetration loss problem, and in many 5G indoor division scenes, a new 5G indoor division system is needed, and compared with 4G, the active scheme occupation ratio is remarkably improved.
At present, aiming at a system layout scheme of indoor wireless coverage, a general method is to adopt a small station system to realize indoor wireless coverage with capacity, a three-level system architecture adopted by the small station system is composed of an access unit AU, an expansion unit HUB and a micro distribution unit PRU, but the micro distribution unit PRU is composed of a digital baseband and a radio frequency part, and is also an active digital processing, the system link is realized by adopting an FPGA (Field Programmable Gate Array, a field programmable gate array), an integrated router and a power tube to realize the wireless coverage of signals, and as the micro distribution unit PRU needs the largest quantity on the whole coverage system link, the networking coverage is realized by adopting 1 access unit AU+4 expansion units HUB+32 micro distribution units PRU, and in one set of expansion type micro station system, the micro distribution unit PRU occupies high cost and power consumption of the whole coverage system due to the numerous micro distribution unit PRU.
Therefore, how to reduce the number of networking unit components of the distributed coverage system, reduce the overall construction cost, and ensure the stability of the transmission signals and the effect of wireless coverage at the same time, thus becoming the problem that the indoor wireless coverage system needs to solve urgently.
Disclosure of Invention
The invention provides a multi-service active distribution system which is used for solving the defects that the networking cost is too high, the network structure is complex and the system power consumption is too high by adopting a traditional three-level architecture aiming at a indoor wireless coverage system in the prior art.
The invention provides a multi-service active distribution system, which comprises:
the method comprises the steps of sequentially adopting upper-level forwarding access equipment, a distribution unit MU and an active antenna Ant which are connected by a radio frequency cable;
the upper-level forwarding access equipment is a preset system base station and is used for providing preset system radio frequency signals;
the distribution unit MU is used for dividing the amplified preset system radio frequency signal into output signals with equal multi-path power, synchronously transmitting the output signals to the active antenna Ant through a radio frequency coaxial cable, and providing cascading with other distribution units MU in the multi-service active distribution system;
the active antenna Ant is used for receiving the direct current electric signals from the MU end of the distribution unit and the radio frequency signals subjected to amplification treatment, receiving, amplifying, covering and locally supplying power to the wireless signals, and providing radio frequency cascade remote control and cascade power supply for the active antennas Ant in cascade connection with other devices.
According to the multi-service active distribution system provided by the invention, the distribution unit MU comprises a Time Division Duplex (TDD) synchronous module, a radio frequency amplification module and a power division module;
the TDD synchronization module is used for analyzing and extracting a local synchronization signal and distributing the local synchronization signal to the active antenna Ant;
the radio frequency amplification module is used for amplifying the radio frequency signal of the upper-level forwarding access equipment to obtain a radio frequency analog signal;
the power dividing module is used for dividing the amplified radio frequency analog signals into output signals with equal multi-path power, and transmitting the output signals to the active antenna Ant through a radio frequency cable.
According to the multi-service active distribution system provided by the invention, the distribution unit MU further comprises a remote power supply module, wherein the remote power supply module is used for providing local power supply of the distribution unit MU and remote power supply of the active antenna Ant through an output direct current signal.
According to the multi-service active distribution system provided by the invention, the distribution unit MU divides the radio frequency signal of the upper-level forwarding access device into three signals, wherein:
the first path of signals and the second path of signals are respectively transmitted to the active antenna Ant through radio frequency signal filtering and radio frequency amplification of the radio frequency amplification module, so that uplink and downlink analog signal transmission is realized;
and the third path of signal is processed by the TDD synchronization module to realize the synchronization of the radio frequency amplified signal and the switching signal of the distribution unit MU and the active antenna Ant.
According to the multi-service active distribution system provided by the invention, the radio frequency amplification module comprises a first coupler, a second coupler, a first attenuator ATT, a second attenuator ATT, a first radio frequency switch, a second radio frequency switch, a third radio frequency switch, a fourth radio frequency switch and a plurality of amplifiers, wherein:
the first path of signals are transmitted to the active antenna Ant through the first coupler, the first attenuator ATT, the first radio frequency switch, the plurality of amplifiers and the second radio frequency switch in sequence;
the second signal is transmitted to the active antenna Ant through the second coupler, the second attenuator ATT, the third radio frequency switch, the plurality of amplifiers and the fourth radio frequency switch in sequence.
According to the multi-service active distribution system provided by the invention, the TDD synchronization module processes the signals and comprises a digital-to-analog converter ADC and a programmable logic processor FPGA;
and the third path of signals are processed through the ADC and the FPGA, clock synchronization and uplink and downlink radio frequency switch switching signals in a TDD signal frame structure are extracted, and the signals are output to a radio frequency switch in the radio frequency amplifying module after binary on-off keying OOK modulation processing.
According to the multi-service active distribution system provided by the invention, the radio frequency signals are transmitted and amplified through the direct connection ports of the first coupler and the second coupler;
the distribution unit MU and the other distribution units MU are cascaded through the coupling ports of the first coupler and the second coupler.
According to the multi-service active distribution system provided by the invention, the active antenna Ant comprises an analog radio frequency amplification module, a synchronous level processing module and an antenna module;
the analog radio frequency amplification module forms a forward radio frequency radiation link, a reverse radio frequency receiving link and a lower cascade link of the active antenna Ant through a third coupler, a fourth coupler, a third attenuator ATT, a fourth attenuator ATT, a fifth radio frequency switch, a sixth radio frequency switch, a seventh radio frequency switch, an eighth radio frequency switch and a plurality of amplifiers;
the synchronous level processing module is used for monitoring signal transmission and controlling switching signals of the uplink and downlink radio frequency switches;
the antenna module and the active antenna Ant are integrally arranged and used for receiving, amplifying and covering wireless signals.
According to the multi-service active distribution system provided by the invention, the radio frequency signals are transmitted and amplified through the direct connection ports of the third coupler and the fourth coupler;
and cascading the active antenna Ant and the other multiple active antennas Ant through the coupling ports of the third coupler and the fourth coupler.
According to the multi-service active distribution system provided by the invention, the distribution units MU maximally support two distribution units MU cascade connection, and the active antennas Ant maximally support four active antenna Ant cascade connection remote.
The multi-service active distribution system provided by the invention realizes the transmission and coverage of multi-mode multi-service by adopting the three-level architecture of the upper-level forwarding access equipment, the distribution unit MU and the active antenna Ant, and has the advantages of high stability of remote transmission of radio frequency signals, effective reduction of system coverage construction cost and saving of system power consumption.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a diagram of the overall architecture of a multi-service active distribution system provided by the present invention;
FIG. 2 is a specific block diagram of a multi-service active distribution system provided by the present invention;
FIG. 3 is a block diagram of a distributed unit MU system provided by the present invention;
FIG. 4 is a schematic diagram of a cascade networking of the distribution units MU provided by the present invention;
fig. 5 is a block diagram of an active antenna Ant system provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is an overall structure diagram of a multi-service active distribution system provided by the present invention, as shown in fig. 1, including:
the method comprises the steps of sequentially adopting upper-level forwarding access equipment, a distribution unit MU and an active antenna Ant which are connected by a radio frequency cable;
the upper-level forwarding access equipment is a preset system base station and is used for providing preset system radio frequency signals;
the distribution unit MU is used for dividing the amplified preset system radio frequency signal into output signals with equal multi-path power, synchronously transmitting the output signals to the active antenna Ant through a radio frequency coaxial cable, and providing cascading with other distribution units MU in the multi-service active distribution system;
the active antenna Ant is used for receiving the direct current electric signals from the MU end of the distribution unit and the radio frequency signals subjected to amplification treatment, receiving, amplifying, covering and locally supplying power to the wireless signals, and providing radio frequency cascade remote control and cascade power supply for the active antennas Ant in cascade connection with other devices.
Specifically, the multi-service active distribution system provided by the invention is realized by adopting a three-level architecture and comprises an upper-level forwarding access device, a distribution unit MU and an active antenna Ant.
As shown in fig. 2, the upper-level forwarding access device may be a 3 g/4 g/5 g distributed small base station, a 3 g/4 g/5 g Pdas base station or a repeater, or a combination system thereof, so as to realize transmission and coverage of multimode and multi-service.
The distribution unit MU supports 3G, 4G and 5G multi-service modes, the distribution unit MU and the active antenna Ant are connected by adopting a radio frequency cable, and the distribution unit MU and the upper-level forwarding access equipment are connected by adopting the radio frequency cable. Here, the distribution unit MU and the active antenna Ant all adopt an analog radio frequency module to realize signal transmission and method, so that the digital intermediate frequency part and baseband processing distribution of the conventional small station system micro distribution unit PRU are removed, and the cost and the power consumption of the coverage system are greatly reduced.
The invention mainly uses the radio frequency cable link between the upper-level front-transmission access equipment and the distribution unit MU, the radio frequency cable link is used between the distribution unit MU and the active antenna Ant, the distribution unit MU and the active antenna Ant are all realized by adopting an analog radio frequency scheme, the system needs 1 access unit AU+1 expansion unit HUB+1 micro distribution unit PRU+1 distributed MU+32 active antenna Ant under the same scene of room division, the cost of the active antenna Ant is only 1/4 of the micro distribution unit PRU, the cost and the power consumption of coverage can be greatly reduced, the system is suitable for being distributed in parking lots, writing buildings, malls, large supermarkets and the like, and the system has important scene application value and market application prospect.
On the basis of the above embodiment, the distribution unit MU includes a time division duplex TDD synchronization module, a radio frequency amplification module, and a power division module;
the TDD synchronization module is used for analyzing and extracting a local synchronization signal and distributing the local synchronization signal to the active antenna Ant;
the radio frequency amplification module is used for amplifying the radio frequency signal of the upper-level forwarding access equipment to obtain a radio frequency analog signal;
the power dividing module is used for dividing the amplified radio frequency analog signals into output signals with equal multi-path power, and transmitting the output signals to the active antenna Ant through a radio frequency cable.
Specifically, as shown in fig. 3, the distribution unit MU includes a TDD synchronization module, a radio frequency amplification module, and a power division module.
The TDD synchronization module is used for analyzing, extracting and distributing the local synchronization signal to the cascade remote active antenna Ant; the radio frequency amplification module is used for processing the radio frequency signal amplification of the upper-level forwarding access equipment; the power dividing module is used for dividing the amplified radio frequency analog signal into 4 paths of output signals with equal power, and transmitting the output signals to the active antenna Ant through the radio frequency cable.
Compared with the traditional three-level architecture scheme, the invention directly adopts a large amount of analog radio frequency amplification and remote operation without optical fiber remote operation and network cable remote operation, and the advantages of adopting the radio frequency remote operation are that the system has no signal error code problem and field fiber melting problem generated by the optical fiber network cable remote operation, the system engineering construction is convenient, and the radio frequency signal remote operation transmission stability is high.
On the basis of the above embodiment, the distribution unit MU further includes a remote power supply module, where the remote power supply module is configured to provide local power supply of the distribution unit MU and remote power supply of the active antenna Ant through the output dc signal.
Optionally, as shown in fig. 3, the distribution unit MU is further built with a remote power supply module, and the remote power supply module with built-in direct current can be used for local power supply of the distribution unit MU and remote power supply of the active antenna Ant.
According to the invention, the remote power supply module is arranged in the distribution unit MU to supply power to the distribution unit MU and the active antenna Ant, so that the network structure is simplified, and the deployment cost is saved.
On the basis of the above embodiment, the distribution unit MU divides the radio frequency signal of the upper level forwarding access device into three signals, where:
the first path of signals and the second path of signals are respectively transmitted to the active antenna Ant through radio frequency signal filtering and radio frequency amplification of the radio frequency amplification module, so that uplink and downlink analog signal transmission is realized;
and the third path of signal is processed by the TDD synchronization module to realize the synchronization of the radio frequency amplified signal and the switching signal of the distribution unit MU and the active antenna Ant.
Specifically, the distribution unit MU forwards accesses to the base station radio frequency signals or the repeater signal radio frequency signals of 3G/4G/5G multi-service, the accessed signals are divided into 3 paths after being subjected to radio frequency filtration by the distribution unit MU, the MIMO function is realized by 2 paths, the amplified signals pass through the power dividing module through the filtering and the radio frequency switch of the radio frequency signals of the analog amplifying module, the downlink power amplifier and the uplink low-noise radio frequency amplifier, and the power dividing module of the MU of the distribution unit has the downlink branching and uplink converging functions of the radio frequency signals, the synchronous transmission function of the switching signals and the remote and transmission functions of direct current.
The multi-service active distribution system provided by the invention simultaneously supports the 3G/4G/5G distributed small base station, the 3G/4G/5G Pdas high-power macro base station or the repeater or the combined system thereof, realizes the transmission and coverage of multi-mode multi-service, adopts radio frequency feed-in remote coverage, and the superior forwarding access equipment is not limited by manufacturers, has better universality of system equipment and is beneficial to centralized purchase.
On the basis of the above embodiment, the radio frequency amplifying module includes a first coupler, a second coupler, a first attenuator ATT, a second attenuator ATT, a first radio frequency switch, a second radio frequency switch, a third radio frequency switch, a fourth radio frequency switch and a plurality of amplifiers, wherein:
the first path of signals are transmitted to the active antenna Ant through the first coupler, the first attenuator ATT, the first radio frequency switch, the plurality of amplifiers and the second radio frequency switch in sequence;
the second signal is transmitted to the active antenna Ant through the second coupler, the second attenuator ATT, the third radio frequency switch, the plurality of amplifiers and the fourth radio frequency switch in sequence.
Specifically, as shown in fig. 3, the radio frequency amplifying module in the distribution unit MU is used for accessing the first signal path and the second signal path.
The first path of signals are transmitted to the active antenna Ant through a first coupler, a first attenuator ATT, a first radio frequency switch, a plurality of amplifiers and a second radio frequency switch in sequence;
the second path of signals sequentially pass through a second coupler, a second attenuator ATT, a third radio frequency switch, a plurality of amplifiers and a fourth radio frequency switch and are transmitted to the active antenna Ant.
The two paths of radio frequency signals output by the radio frequency modules of the MU of the distribution unit are subjected to 2 times of power division and then output 4 paths of uplink and downlink radio frequency signals, wherein the 4 paths of MIMO signals are TR1-1, TR2-1, TR1-2, TR2-2, TR1-3, TR2-3, TR1-4 and TR2-4, and the 4 paths of radio frequency signals are subjected to multi-service MIMO transmission through the analog amplifying module and the power division module.
Compared with the traditional three-level architecture scheme, the invention realizes the branching of signals through the distribution unit MU, transmits the corresponding branching signals to the corresponding active antennas Ant, realizes multi-level remote coverage, and reduces the system coverage cost and the system power consumption to more than half of the original cost.
On the basis of the embodiment, the TDD synchronization module performs processing including a digital-to-analog converter ADC and a programmable logic processor FPGA;
and the third path of signals are processed through the ADC and the FPGA, clock synchronization and uplink and downlink radio frequency switch switching signals in a TDD signal frame structure are extracted, and the signals are output to a radio frequency switch in the radio frequency amplifying module after binary on-off keying OOK modulation processing.
Specifically, as shown in fig. 3, the third signal branched by the distribution unit MU is processed by the digital-to-analog converter ADC of the TDD synchronization module and the FPGA baseband of the programmable logic processor, to extract the clock synchronization and the uplink and downlink radio frequency switch switching signals in the TDD signal frame structure, and the uplink and downlink radio frequency switch switching signals are modulated by the OOK (On-Off Keying) of the TDD synchronization module and then output to the uplink and downlink radio frequency switches, so as to realize the radio frequency amplification of the distribution unit MU and synchronous transmission of the switch signals to the active antenna Ant.
The third path of radio frequency signals after the MU radio frequency filtering is processed by the ADC digital sampling of the TDD synchronization module and the FPGA baseband of the logic processor, the synchronization module extracts clock synchronization and uplink and downlink radio frequency switch switching signals in the TDD signal frame structure, the uplink and downlink radio frequency switch switching signals are output to the uplink and downlink radio frequency switches of the radio frequency module analog amplifying link after being processed by the TDD synchronization module, the radio frequency switches of the MU are synchronous with the uplink and downlink switches of the advanced front transmission access equipment, meanwhile, the MU transmits the switching signals analyzed by the synchronization module to the active antenna Ant through the signals TR1-1, TR2-1, TR1-2, TR2-2, TR1-3, TR2-3, TR1-4 and TR2-4 synchronously, the distribution unit transmits direct current electric signals of the remote power supply module to the active antenna Ant through radio frequency cables of the ports TR1-1, TR2-2, TR1-3, TR2-3, TR1-4 and TR2-4, and the function of the local power supply is realized.
Compared with the traditional three-level architecture scheme, the invention realizes the branching of signals through the distribution unit MU, transmits the corresponding branching signals to the corresponding active antennas Ant, realizes multi-level remote coverage, and reduces the system coverage cost and the system power consumption to more than half of the original cost.
On the basis of the embodiment, the radio frequency signals are transmitted and amplified through the direct connection ports of the first coupler and the second coupler;
the distribution unit MU and the other distribution units MU are cascaded through the coupling ports of the first coupler and the second coupler.
Specifically, as shown in fig. 4, the first distribution unit MU1 may support one-stage chain cascading, and the implementation method is implemented through a coupler link on a link of a radio frequency amplification module TRX1 and a TRX2 built in the first distribution unit MU1, and a direct connection port of a coupler port is an accessed signal amplification and transmission, and after radio frequency filtering, a radio frequency switch, a power amplifier and low-noise amplification, the signal is transmitted to each active antenna Ant through a power division module.
The coupling end of the coupler port is directly transmitted to the cascaded second distribution unit MU2 through the radio frequency cable. The two distribution units MU1 and MU2 in the invention can realize the remote coverage of 32 active antennas through chain type cascade networking.
The multi-service active distribution system provided by the invention is combined with the synchronous switching technology, so that wide area coverage of indoor multi-service is effectively met, and meanwhile, the system coverage cost and the system power consumption are greatly reduced.
On the basis of the embodiment, the active antenna Ant comprises an analog radio frequency amplifying module, a synchronous level processing module and an antenna module;
the analog radio frequency amplification module forms a forward radio frequency radiation link, a reverse radio frequency receiving link and a lower cascade link of the active antenna Ant through a third coupler, a fourth coupler, a third attenuator ATT, a fourth attenuator ATT, a fifth radio frequency switch, a sixth radio frequency switch, a seventh radio frequency switch, an eighth radio frequency switch and a plurality of amplifiers;
the synchronous level processing module is used for monitoring signal transmission and controlling switching signals of the uplink and downlink radio frequency switches;
the antenna module and the active antenna Ant are integrally arranged and used for receiving, amplifying and covering wireless signals.
Specifically, as shown in fig. 5, the active antenna Ant is internally provided with a synchronous level processing module and an analog radio frequency amplifying module, wherein the analog radio frequency amplifying module comprises a forward radio frequency radiation link, a reverse radio frequency receiving link and a lower cascade link of the active antenna Ant, and specifically comprises a third coupler, a fourth coupler, a third attenuator ATT, a fourth attenuator ATT, a fifth radio frequency switch, a sixth radio frequency switch, a seventh radio frequency switch, an eighth radio frequency switch and a plurality of amplifiers.
The synchronous level processing module is used for monitoring signal transmission of a device system link and switching signal control of uplink and downlink radio frequency on and off; the antenna module is integrated with the active antenna Ant equipment and is used for receiving and amplifying and covering wireless signals of the 5G multi-service active antenna system.
The MIMO radio frequency cable signal of the distribution unit MU received by the active antenna Ant is transmitted to the uplink coupler, the radio frequency signal is filtered, the radio frequency switch, the downlink power amplifier and the uplink low-noise radio frequency amplifier, the multi-service wireless coverage is realized through the built-in antenna output, the uplink and downlink radio frequency switch switching signal of the TDD is extracted through the synchronous level processing module, and the uplink and downlink radio frequency switch switching signal is output to the uplink and downlink radio frequency switch of the radio frequency module analog amplifying link after being processed by the TDD synchronous module, so that the synchronization of the radio frequency switch of the active antenna Ant and the uplink and downlink switch of the distribution unit MU is realized.
The invention replaces the traditional digital micro-distribution unit PRU with the analog active antennas to realize wireless coverage, meanwhile, the distribution unit MU adopts 2-level cascade networking in the whole coverage area to realize remote coverage of 32 active antennas of different floors or areas, the system coverage cost is saved by more than 45%, and the system power consumption is saved by more than 50%.
On the basis of the embodiment, the radio frequency signal is transmitted and amplified through the direct connection ports of the third coupler and the fourth coupler;
and cascading the active antenna Ant and the other multiple active antennas Ant through the coupling ports of the third coupler and the fourth coupler.
Specifically, as shown in fig. 5, similar to the MU distribution unit, the active antenna Ant may support one-stage chain cascading, and the implementation method is that the analog amplification modules TRX1 and TRX2 built in the active antenna Ant1 are implemented on a coupler link on the link, and the direct connection port of the coupler port is used for amplifying and transmitting an accessed signal, and after radio frequency filtering, radio frequency switching, power amplification and low noise amplification, the signal is transmitted to an air interface through a built-in antenna to implement wireless coverage. The coupling end of the coupler port is directly transmitted to the cascaded active antenna Ant2 through a radio frequency cable, and the two-way coupler of the active antenna realizes the chain networking transmission of two-way MIMO multi-service signals.
The invention replaces the traditional digital micro-distribution unit PRU with the analog active antennas to realize wireless coverage, meanwhile, the distribution unit MU adopts 2-level cascade networking in the whole coverage area to realize remote coverage of 32 active antennas of different floors or areas, the system coverage cost is saved by more than 45%, and the system power consumption is saved by more than 50%.
On the basis of the above embodiment, the distribution unit MU maximally supports two distribution unit MU cascades, and the active antenna Ant maximally supports four active antenna Ant cascades to be pulled away.
Specifically, as shown in fig. 2, the distribution unit MU in the present invention supports two-stage cascading at maximum, that is, the first distribution unit MU1 cascades the second distribution unit MU2. The two distribution units MUI and MU2 can realize the remote coverage of 32 active antennas through chain type cascading networking. The active antenna Ant maximally supports cascade pulling of the 4-level active antenna Ant.
The multi-service active distribution system provided by the invention realizes the transmission and coverage of multi-mode multi-service by adopting the three-level architecture of the upper-level forwarding access equipment, the distribution unit MU and the active antenna Ant, and has the advantages of high stability of remote transmission of radio frequency signals, effective reduction of system coverage construction cost and saving of system power consumption.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A multi-service active distribution system, comprising: the method comprises the steps of sequentially adopting upper-level forwarding access equipment, a distribution unit MU and an active antenna Ant which are connected by a radio frequency cable;
the upper-level forwarding access equipment is a preset system base station and is used for providing preset system radio frequency signals;
the distribution unit MU is used for dividing the amplified preset system radio frequency signal into output signals with equal multi-path power, synchronously transmitting the output signals to the active antenna Ant through a radio frequency coaxial cable, and providing cascading with other distribution units MU in the multi-service active distribution system;
the distribution unit MU further comprises a remote power supply module, wherein the remote power supply module is used for providing local power supply of the distribution unit MU and remote power supply of the active antenna Ant through an output direct current signal;
the active antenna Ant is used for receiving the direct current electric signals from the MU end of the distribution unit and the amplified radio frequency signals, realizing the receiving, amplifying coverage and local power supply of the wireless signals, and providing radio frequency cascade remote and cascade power supply with a plurality of other cascade active antennas Ant;
the distribution unit MU comprises a Time Division Duplex (TDD) synchronous module, a radio frequency amplification module and a power division module;
the TDD synchronization module is used for analyzing and extracting a local synchronization signal and distributing the local synchronization signal to the active antenna Ant;
the radio frequency amplification module is used for amplifying the radio frequency signal of the upper-level forwarding access equipment to obtain a radio frequency analog signal;
the power dividing module is used for dividing the amplified radio frequency analog signals into output signals with equal multi-path power, and transmitting the output signals to the active antenna Ant through a radio frequency cable;
the distribution unit MU divides the radio frequency signal of the upper-level forwarding access device into three signals, wherein:
the first path of signals and the second path of signals are respectively transmitted to the active antenna Ant through radio frequency signal filtering and radio frequency amplification of the radio frequency amplification module, so that uplink and downlink analog signal transmission is realized;
and the third path of signals are processed through the TDD synchronous module, so that the synchronization of the radio frequency amplified signals of the distribution unit MU and the active antenna Ant and the radio frequency switch signals of the radio frequency amplified module is realized.
2. The multi-service active distribution system of claim 1, wherein the radio frequency amplification module comprises a first coupler, a second coupler, a first attenuator ATT, a second attenuator ATT, a first radio frequency switch, a second radio frequency switch, a third radio frequency switch, a fourth radio frequency switch, and a plurality of amplifiers, wherein:
the first path of signals are transmitted to the active antenna Ant through the first coupler, the first attenuator ATT, the first radio frequency switch, the plurality of amplifiers and the second radio frequency switch in sequence;
the second signal is transmitted to the active antenna Ant through the second coupler, the second attenuator ATT, the third radio frequency switch, the plurality of amplifiers and the fourth radio frequency switch in sequence.
3. The multi-service active distribution system according to claim 1, wherein the TDD synchronization module processes a signal including a digital-to-analog converter ADC and a programmable logic processor FPGA;
the third path of signals are processed through the ADC and the FPGA, clock synchronization and uplink and downlink radio frequency switch switching signals in a TDD signal frame structure are extracted, and the signals are output to a radio frequency switch in the radio frequency amplifying module after being modulated through binary on-off keying OOK; the uplink and downlink radio frequency switch switching signals are used for controlling the switching of the radio frequency switch in the radio frequency amplifying module.
4. The multi-service active distribution system according to claim 2, wherein the radio frequency signal is transmitted and amplified through the direct ports of the first coupler and the second coupler;
the distribution unit MU and the other distribution units MU are cascaded through the coupling ports of the first coupler and the second coupler.
5. The multi-service active distribution system according to claim 1, wherein the active antenna Ant comprises an analog radio frequency amplification module, a synchronization level processing module, and an antenna module;
the analog radio frequency amplification module forms a forward radio frequency radiation link, a reverse radio frequency receiving link and a lower cascade link of the active antenna Ant through a third coupler, a fourth coupler, a third attenuator ATT, a fourth attenuator ATT, a fifth radio frequency switch, a sixth radio frequency switch, a seventh radio frequency switch, an eighth radio frequency switch and a plurality of amplifiers;
the synchronous level processing module is used for monitoring signal transmission and controlling switching signals of the uplink and downlink radio frequency switches;
the antenna module and the active antenna Ant are integrally arranged and used for receiving, amplifying and covering wireless signals.
6. The multi-service active distribution system according to claim 5, wherein the radio frequency signal is transmitted and amplified through the direct ports of the third coupler and the fourth coupler;
and cascading the active antenna Ant and the other multiple active antennas Ant through the coupling ports of the third coupler and the fourth coupler.
7. The multi-service active distribution system according to any of claims 1 to 6, wherein the distribution unit MU supports a maximum of two distribution unit MU cascades and the active antenna Ant supports a maximum of four active antenna Ant cascades.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574815.7A CN114157330B (en) | 2021-12-21 | 2021-12-21 | Multi-service active distribution system |
| PCT/CN2022/103780 WO2023115907A1 (en) | 2021-12-21 | 2022-07-05 | Multi-service active distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111574815.7A CN114157330B (en) | 2021-12-21 | 2021-12-21 | Multi-service active distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114157330A CN114157330A (en) | 2022-03-08 |
| CN114157330B true CN114157330B (en) | 2023-10-03 |
Family
ID=80451631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111574815.7A Active CN114157330B (en) | 2021-12-21 | 2021-12-21 | Multi-service active distribution system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114157330B (en) |
| WO (1) | WO2023115907A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114900861B (en) * | 2022-06-17 | 2024-04-09 | 中国联合网络通信集团有限公司 | Base station control method, base station and storage medium |
| CN115276679A (en) * | 2022-06-21 | 2022-11-01 | 中国电信股份有限公司 | Frequency shift system and frequency shift method |
| CN116505992B (en) * | 2023-06-25 | 2023-09-15 | 西安安森智能仪器股份有限公司 | Wireless communication method |
| CN116760438B (en) * | 2023-08-07 | 2023-10-20 | 赛尔通信服务技术股份有限公司 | Parallel-serial conversion and enhancement device for 5G multichannel same-frequency MIMO signals |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005100A (en) * | 2011-06-14 | 2013-01-07 | Nippon Antenna Co Ltd | Broad-band antenna |
| CN110798843A (en) * | 2019-12-05 | 2020-02-14 | 广州市瀚云信息技术有限公司 | 5G signal radio frequency distribution system |
| CN111478731A (en) * | 2019-01-23 | 2020-07-31 | 广州开信通讯系统有限公司 | Communication system and communication method |
| CN112367670A (en) * | 2020-10-29 | 2021-02-12 | 北京唯得科技有限公司 | Coaxial feeder line power supply method based on wireless indoor distribution system and passive indoor coverage system |
| CN113055899A (en) * | 2021-04-16 | 2021-06-29 | 罗森伯格技术有限公司 | Remote device and 5G distributed system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9980318B2 (en) * | 2015-03-16 | 2018-05-22 | Commscope Technologies Llc | DAS management by radio access network node |
| WO2020072149A1 (en) * | 2018-10-01 | 2020-04-09 | Commscope Technologies Llc | Systems and methods for a passive-active distributed antenna architecture |
| CN213989224U (en) * | 2021-03-05 | 2021-08-17 | 北京天河鸿城电子有限责任公司 | Active 5G-iLAN antenna and active 5G-iLAN antenna 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 |
-
2021
- 2021-12-21 CN CN202111574815.7A patent/CN114157330B/en active Active
-
2022
- 2022-07-05 WO PCT/CN2022/103780 patent/WO2023115907A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013005100A (en) * | 2011-06-14 | 2013-01-07 | Nippon Antenna Co Ltd | Broad-band antenna |
| CN111478731A (en) * | 2019-01-23 | 2020-07-31 | 广州开信通讯系统有限公司 | Communication system and communication method |
| CN110798843A (en) * | 2019-12-05 | 2020-02-14 | 广州市瀚云信息技术有限公司 | 5G signal radio frequency distribution system |
| CN112367670A (en) * | 2020-10-29 | 2021-02-12 | 北京唯得科技有限公司 | Coaxial feeder line power supply method based on wireless indoor distribution system and passive indoor coverage system |
| CN113055899A (en) * | 2021-04-16 | 2021-06-29 | 罗森伯格技术有限公司 | Remote device and 5G distributed system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023115907A1 (en) | 2023-06-29 |
| CN114157330A (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114157330B (en) | Multi-service active distribution system | |
| CN106712851B (en) | Distributed wireless signal coverage system | |
| JP2952249B2 (en) | Microcellular mobile communication system | |
| CN108847891B (en) | Radio over fiber distributed small base station system | |
| CN111343642A (en) | 5G signal radio frequency conversion distribution system | |
| CN103327508A (en) | Access system for transmitting wireless signals and Ethernet signals by power line | |
| CN209767546U (en) | Distributed antenna system | |
| CN109257098A (en) | A kind of more scene communication full-service light distribution system control methods | |
| KR101791636B1 (en) | Base station signal matching device, base station interface unit and distributed antenna system comprising the same | |
| CN111130592A (en) | Radio frequency front end module supporting LTE/NR dual connectivity for 5G non-independent networking | |
| CN210899142U (en) | Radio frequency remote device of double-channel multi-frequency-band mobile communication base station | |
| CN113938140A (en) | Remote transmission covering method, system and remote unit | |
| CN109618412B (en) | Novel 5G-oriented digital optical fiber distribution system and method for carrying out capacity scheduling on downlink and uplink by using same | |
| CN104320790A (en) | TDD (Time Division Duplex)-LTE (Long Term Evolution) multiple-input-multiple-output indoor coverage system | |
| US20160066307A1 (en) | Mimo communication method and system | |
| CN109104222A (en) | It is a kind of based on millimeter wave-microwave multiple-input and multiple-output cordless communication network | |
| CN103124426B (en) | Reduce the method for energy consumption and the communication terminal for realizing this method in wireless communication terminal | |
| CN203387690U (en) | Multi-mode digital DAS supporting multi-source access | |
| CN203387519U (en) | ROF-based novel base station feedback reception and transmit-receive calibration reuse circuit | |
| CN210157391U (en) | Distributed 5G gNB base station based on coaxial distribution network | |
| CN111935730A (en) | Method and device for realizing signal coverage of distributed base station and base station network | |
| CN102325389B (en) | GSM micropower repeater of automatic locking base station BCCH (Broadcast Control Channel) | |
| CN112600595B (en) | Tunnel leaky-cable communication system | |
| CN112929059B (en) | Distributed antenna system and signal transmission method | |
| CN201657333U (en) | Wireless access point of wireless MESH network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |