A wireless micro-distribution system

Abstract

An embodiment of the present invention provides a wireless micro-distribution system, which includes: an active antenna unit, an extension unit and a coverage unit, wherein the active antenna unit is connected to the extension unit, and the extension unit is connected to the coverage unit; the active antenna unit includes a wideband dual-polarization active antenna and multiple first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to transmit and receive radio frequency signals of different frequency bands, and the multiple first radio frequency units are used to perform first signal processing on radio frequency signals of different frequency bands; the extension unit is used to forward optical signals sent by the active antenna unit to the coverage unit; and is used to forward optical signals sent by the coverage unit to the active antenna unit; the coverage unit is used to transmit and receive radio frequency signals of different frequency bands; and is used to perform second signal processing on radio frequency signals of different segments; through the embodiment of the present invention, simultaneous coverage of multi-band wireless signals based on the wireless micro-distribution system is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a wireless micro-distribution system. Background Art

[0002] For indoor coverage solutions, the feeder link frequency of the traditional 4G (the 4th generation mobile communication technology) system passive DAS (Distributed Antenna System) system can only support 3G (3rd-Generation). The 5G (5th Generation Mobile Communication Technology) frequency wireless coverage above 3G cannot be directly achieved using the current indoor passive DAS system and passive components. The current passive components have large losses above 3GHz. The transformation of the existing DAS system requires the optimization of passive component indicators and the upgrading of components, which is difficult and takes a long time to achieve. In many 5G indoor distributed scenarios, a new 5G indoor distributed system is required.

[0003] At present, the general solution in the industry for the layout of indoor wireless coverage is to use a 5G small base station system to achieve indoor wireless coverage with capacity. The small base station system adopts a three-level system architecture consisting of an access unit (AU), an extended unit (EU), and a remote unit (RU). However, for a newly built indoor system, in order to meet the requirements of both 5G wireless coverage and 4G or 3G multi-service wireless coverage, a 3G, 4G or 5G single-mode small base station or a 5G single-mode small base station and a 3G or 4G passive DAS system are required to achieve indoor multi-service coverage, which increases the cost and difficulty of engineering construction. Summary of the invention

[0004] In view of the above problems, a wireless micro-distribution system is proposed to overcome the above problems or at least partially solve the above problems, including:

[0005] An active antenna unit, an extension unit and a covering unit, wherein the active antenna unit is connected to the extension unit, and the extension unit is connected to the covering unit;

[0006] The active antenna unit includes a wideband dual-polarization active antenna and a plurality of first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to transmit and receive radio frequency signals of different frequency bands, and the plurality of first radio frequency units are used to perform first signal processing on radio frequency signals of different frequency bands;

[0007] The extension unit is used to forward the optical signal sent by the active antenna unit to the covering unit; and, is used to forward the optical signal sent by the covering unit to the active antenna unit;

[0008] The covering unit is used for transmitting and receiving radio frequency signals of different frequency bands; and for performing second signal processing on radio frequency signals of different segments.

[0009] Optionally, the active antenna unit further includes a radio frequency board, the radio frequency board is connected to the broadband dual-polarization active antenna and a feeder, the other end of the feeder is connected to a base station, and the multiple first radio frequency units are respectively connected to the radio frequency board;

[0010] The radio frequency board receives and sends radio frequency signals of different frequency bands by wired coupling feeding; and receives and sends radio frequency signals of different frequency bands by wireless feeding.

[0011] Optionally, the broadband dual-polarization active antenna includes a broadband antenna for radio frequency signals of different frequency bands.

[0012] Optionally, the extension unit includes an optical path distribution unit and a power supply unit;

[0013] The optical path distribution unit is used to distribute the optical signal sent by the active antenna unit to the covering unit; and to forward the optical signal sent by the covering unit to the active antenna unit;

[0014] The power supply unit is used to supply power to the active antenna unit and the covering unit.

[0015] Optionally, the active antenna unit further includes a power management unit;

[0016] The power management unit is used to control the power supply unit.

[0017] Optionally, the active antenna unit further includes a first monitoring synchronization unit, and the coverage unit includes a second monitoring synchronization unit;

[0018] The first monitoring synchronization unit and the second monitoring synchronization unit are used for signal synchronization between the active antenna unit and the coverage unit.

[0019] Optionally, the first monitoring synchronization unit is further used to monitor the working status of the extension unit and the covering unit.

[0020] Optionally, the multiple first radio frequency units include a first radio frequency link for radio frequency signals of a first frequency band, and a second radio frequency link for radio frequency signals of a second frequency band;

[0021] The first radio frequency link includes a first uplink radio frequency link and a first downlink radio frequency link;

[0022] The first uplink radio frequency link includes: a first duplexer, a first uplink first low noise amplifier, a first digitally controlled attenuator, a first gain module, a first frequency-selective bandpass filter, and a second duplexer connected in sequence; the first downlink radio frequency link includes: a second duplexer, a second digitally controlled attenuator, a second gain module, a second frequency-selective bandpass filter, a first power amplifier, and a first duplexer connected in sequence;

[0023] The second radio frequency link includes a second uplink radio frequency link and a second downlink radio frequency link;

[0024] The second uplink RF link includes: a first filter, a first RF switch, a second low-noise amplifier, a third digitally controlled attenuator, a third gain module, a third frequency-selective bandpass filter, a second RF switch, and a second filter connected in sequence; the second downlink RF link includes: a second filter, a second RF switch, a fourth digitally controlled attenuator, a fourth gain module, a fourth frequency-selective bandpass filter, a second power amplifier, a first RF switch, and a first filter connected in sequence.

[0025] Optionally, the coverage unit includes a plurality of second radio frequency units, and the plurality of second radio frequency units include a third radio frequency link for radio frequency signals in the first frequency band, and a fourth radio frequency link for radio frequency signals in the second frequency band;

[0026] The third radio frequency link includes a third uplink radio frequency link and a third downlink radio frequency link;

[0027] The third uplink radio frequency link includes: a third filter, a third radio frequency switch, a fifth digitally controlled attenuator, a fifth gain module, a fifth frequency-selective bandpass filter, a third power amplifier, a fourth radio frequency switch, and a fourth filter connected in sequence; the third downlink radio frequency link includes: a fourth filter, a fourth radio frequency switch, a third low-noise amplifier, a sixth digitally controlled attenuator, a sixth gain module, a sixth frequency-selective bandpass filter, a third radio frequency switch, and a third filter connected in sequence;

[0028] The fourth radio frequency link includes a fourth uplink radio frequency link and a fourth downlink radio frequency link;

[0029] The fourth uplink radio frequency link includes: a third duplexer, a seventh digitally controlled attenuator, a seventh gain module, a seventh frequency-selective bandpass filter, a fourth power amplifier and a fourth duplexer connected in sequence; the fourth downlink radio frequency link includes: a fourth duplexer, a fourth low-noise amplifier, an eighth digitally controlled attenuator, an eighth gain module, an eighth frequency-selective bandpass filter and a third duplexer connected in sequence.

[0030] Optionally, the extension unit includes an optical fiber conversion intelligent management unit;

[0031] The optical fiber conversion intelligent management unit is used to perform photoelectric conversion on the optical signal received by the extension unit, and to monitor and adjust the optical signal received by the extension unit.

[0032] The embodiments of the present invention have the following advantages:

[0033] A wireless micro-distribution system according to an embodiment of the present invention comprises: an active antenna unit, an extension unit and a coverage unit, wherein the active antenna unit is connected to the extension unit, and the extension unit is connected to the coverage unit; the active antenna unit comprises a wideband dual-polarization active antenna and a plurality of first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to transmit and receive radio frequency signals of different frequency bands, and the plurality of first radio frequency units are used to perform first signal processing on radio frequency signals of different frequency bands; the extension unit is used to forward optical signals sent by the active antenna unit to the coverage unit; and is used to forward optical signals sent by the coverage unit to the active antenna unit; the coverage unit is used to transmit and receive radio frequency signals of different frequency bands; and is used to perform second signal processing on radio frequency signals of different segments. Through the embodiment of the present invention, the transmission, reception and processing of radio frequency signals of different frequency bands by a wireless micro-distribution system deployed with a wideband active antenna is realized, so that the wireless micro-distribution system supports the simultaneous coverage of multiple frequency bands of 5G wireless signals, thereby making the wireless micro-distribution system highly integrated; and through the wideband antenna, the volume occupied by the wireless micro-distribution system can be reduced; thereby reducing the cost and difficulty of engineering construction.

[0034] And through the design of frequency-selective bandpass filters, the requirements for actual networking frequency band selection can be met, further reducing equipment and construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0036] Figure 1 is a structural block diagram of a wireless micro-distribution system according to an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of a wireless micro-distribution system according to an embodiment of the present invention;

[0038] Figure 3 is a structural schematic diagram of an active antenna unit according to an embodiment of the present invention;

[0039] Figure 4a is a structural schematic diagram of a first radio frequency unit for 4G according to an embodiment of the present invention;

[0040] Figure 4b is a structural schematic diagram of a first radio frequency unit for 5G according to an embodiment of the present invention;

[0041] Figure 5 is a structural schematic diagram of an extension unit according to an embodiment of the present invention;

[0042] Figure 6 is a structural schematic diagram of a covering unit according to an embodiment of the present invention;

[0043] Figure 7 It is a structural schematic diagram of a second radio frequency unit for 5G and a second radio frequency unit for 4G according to an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Reference Figure 1 , shows a structural block diagram of a wireless micro-distribution system according to an embodiment of the present invention; Figure 1 The wireless micro-distribution system shown may include an active antenna unit, an extension unit and a coverage unit. The active antenna unit may be connected to the extension unit, and the extension unit may be connected to the coverage unit.

[0046] Among them, the active antenna unit can interact with the base station in a wired or wireless manner; the coverage unit can interact with the user terminal in a wired or wireless manner.

[0047] The extension unit may be used to forward a signal received by the active antenna unit from the base station to the coverage unit, and to forward a signal received by the coverage unit from the user terminal to the active antenna unit.

[0048] In one embodiment of the present invention, the active antenna unit may include a wideband dual-polarization active antenna and multiple first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to send and receive radio frequency signals in different frequency bands, and the multiple first radio frequency units are used to perform first signal processing on radio frequency signals in different frequency bands.

[0049] Specifically, the broadband dual-polarization active antenna may be configured to receive radio frequency signals of different frequency bands; for example, the broadband dual-polarization active antenna may include a broadband antenna for radio frequency signals of different frequency bands.

[0050] As an example, the wideband dual-polarization active antenna may include a first wideband antenna for 1800-2100 MHz and a second wideband antenna for 3500 MHz to respectively transmit and receive radio frequency signals in 4G mode and radio frequency signals in 5G mode.

[0051] Wideband antennas for different frequency bands can be connected to corresponding first RF units so that the first RF unit can perform first signal processing on RF signals of the corresponding frequency bands; the first signal processing may include amplification, gain adjustment, out-of-band suppression, etc., which is not limited in the embodiments of the present invention.

[0052] In one embodiment of the present invention, the active antenna unit also includes a radio frequency board, which is connected to the broadband dual-polarization active antenna and a feeder, the other end of the feeder is connected to the base station, and multiple first radio frequency units are respectively connected to the radio frequency board; the radio frequency board receives and sends radio frequency signals of different frequency bands by wired coupling feeding; and, receives and sends radio frequency signals of different frequency bands by wireless feeding.

[0053] Specifically, an RF board can be deployed in the active antenna unit, for example: an RF hot-swappable board; the RF board can be connected to a broadband dual-polarization active antenna and a feeder, and the other end of the feeder can be connected to a base station, so as to realize wired coupling feeding and wireless coupling feeding of the active antenna unit through the RF board.

[0054] For example: the base station can send RF signals of different frequency bands to the active antenna unit through the feeder, and the RF board can receive the RF signals of different frequency bands sent by the base station by wired coupling feeding; and the RF board can send the RF signals of different frequency bands sent by the user terminal and received by the active antenna unit to the base station through the feeder.

[0055] Alternatively, the base station can send radio frequency signals of different frequency bands to the wideband dual-polarization active antenna in the active antenna unit, and the radio frequency board can receive the radio frequency signals of different frequency bands sent by the base station in a wireless coupling feeding manner; and the radio frequency board can send the radio frequency signals of different frequency bands sent by the user terminal received by the active antenna unit to the base station through the wideband dual-polarization active antenna, and the embodiments of the present invention do not limit this.

[0056] In one embodiment of the present invention, multiple first RF units can be used for receiving and transmitting RF signals, gain adjustment, out-of-band suppression, etc.; multiple first RF units can include a first RF link for RF signals in a first frequency band, and a second RF link for RF signals in a second frequency band; wherein the first frequency band may refer to a frequency band in a 4G mode, for example: 1800-2100MHz, and the second frequency band may refer to a frequency band in a 5G mode, for example: 3500MHz, and this embodiment of the present invention does not impose any restrictions on this.

[0057] As an example, the first RF link may include a first uplink RF link and a first downlink RF link; the first uplink RF link includes: a first duplexer, a first low noise amplifier, a first digitally controlled attenuator, a first gain module, a first frequency selective bandpass filter, and a second duplexer connected in sequence; the first downlink RF link includes: a second duplexer, a second digitally controlled attenuator, a second gain module, a second frequency selective bandpass filter, a first power amplifier, and a first duplexer connected in sequence.

[0058] Among them, the first duplexer can be connected to the first wideband antenna to extract and separate the radio frequency signal corresponding to the frequency band in the 4G mode received by the first wideband antenna; the second duplexer can be connected to the optical fiber conversion unit in the active antenna unit to perform photoelectric conversion on the processed signal and transmit it to the extension unit; the first and second duplexers can be high-isolation duplexers, which are used to extract and separate the uplink and downlink signals of FDD (Frequency Division Duplexing) signals, while providing high isolation and suppression to prevent link self-excitation.

[0059] The first low noise amplifier can be used to process the radio frequency signal corresponding to the frequency band in the 4G mode sent from the base station to the user terminal to ensure that the gain and noise coefficient of the receiving link are good.

[0060] The first digitally controlled attenuator can be used to process the radio frequency signal corresponding to the frequency band in the 4G mode sent from the base station to the user terminal, so as to realize automatic adjustment of the downlink gain.

[0061] The first gain module can be used to amplify small signals to meet the gain range required by the receiving link.

[0062] The first frequency-selective bandpass filter can be used to select a frequency band according to the fed signal (for example, a radio frequency signal corresponding to a frequency band in 4G mode sent from a base station to a user terminal) to improve the signal-to-noise ratio and out-of-band suppression performance of the signal.

[0063] In addition, the first power amplifier may be used to amplify the power of the signal, and the output power level of the first power amplifier may be from 30dm to 43dBm, which is not limited in the embodiment of the present invention.

[0064] The functions of the other second duplexer, second digitally controlled attenuator, second gain module, second frequency-selective bandpass filter and first duplexer constituting the first downlink are similar to those of the above-mentioned structure constituting the first uplink RF link, and are not described in detail here.

[0065] The first downlink can be used to process the radio frequency signal corresponding to the frequency band in the 4G mode sent from the user terminal to the base station.

[0066] As another example, the second RF link may include a second uplink RF link and a second downlink RF link; the second uplink RF link includes: a first filter, a first RF switch, a second low noise amplifier, a third digitally controlled attenuator, a third gain module, a third frequency selective bandpass filter, a second RF switch and a second filter connected in sequence; the second downlink RF link includes: a second filter, a second RF switch, a fourth digitally controlled attenuator, a fourth gain module, a fourth frequency selective bandpass filter, a second power amplifier, a first RF switch and a first filter connected in sequence.

[0067] Among them, the first filter can be connected to the second broadband antenna to filter the radio frequency signal corresponding to the frequency band in the 5G mode received by the second broadband antenna; the second filter can be connected to the optical fiber conversion unit in the active antenna unit to perform optoelectronic conversion on the processed signal and transmit it to the extension unit.

[0068] The first radio frequency switch can be used to control the switching of microwave signal channels.

[0069] The second low noise amplifier can be used to process the radio frequency signal corresponding to the frequency band in the 5G mode sent from the base station to the user terminal to ensure good gain and noise factor of the receiving link.

[0070] The third digitally controlled attenuator can be used to process the radio frequency signal corresponding to the frequency band in the 5G mode sent from the base station to the user terminal, thereby realizing automatic adjustment of the downlink gain.

[0071] The third gain module can be used to amplify small signals to meet the gain range required by the receiving link.

[0072] The third frequency-selective bandpass filter can be used to select the frequency band according to the fed signal (for example, the RF signal corresponding to the frequency band in the 5G mode sent from the base station to the user terminal) to improve the signal-to-noise ratio and out-of-band suppression performance of the signal.

[0073] In addition, the second power amplifier can be used to amplify the power of the signal; and the other second filter, second RF switch, fourth digitally controlled attenuator, fourth gain module, fourth frequency selective bandpass filter, first RF switch and first filter that constitute the second downlink link have similar functions to the above-mentioned structure that constitutes the second uplink RF link, and will not be repeated here.

[0074] The second downlink can be used to process the radio frequency signal corresponding to the frequency band in the 5G mode sent from the user terminal to the base station.

[0075] After processing the signal, the first radio frequency unit may perform photoelectric conversion on the processed signal through the optical fiber conversion unit in the active antenna unit and send the converted signal to the extension unit.

[0076] In one embodiment of the present invention, the extension unit may be used to forward the optical signal sent by the active antenna unit to the coverage unit; and to forward the optical signal sent by the coverage unit to the active antenna unit.

[0077] Specifically, the extension unit may include an optical path distribution unit and a power supply unit; the optical path distribution unit is used to distribute the optical signal sent by the active antenna unit to the covering unit; and to forward the optical signal sent by the covering unit to the active antenna unit; the power supply unit is used to supply power to the active antenna unit and the covering unit.

[0078] Among them, the optical path distribution unit can be used as an optical path distribution structure; specifically, the optical path distribution unit can be used to distribute the optical signal sent by the active antenna unit to the coverage unit, and to forward the optical signal sent by the coverage unit to the active antenna unit.

[0079] The power supply unit may include a power supply, and the power supply in the power supply unit may supply power to the active antenna unit and the extension unit respectively; by supplying power to the active antenna unit and the coverage unit from the power supply unit in the extension unit, engineering construction and coverage networking may be facilitated.

[0080] As an example, the extension unit may also include an optical fiber conversion intelligent management unit; the optical fiber conversion intelligent management unit is used to perform photoelectric conversion on the optical signal received by the extension unit, and monitor and adjust the optical signal received by the extension unit.

[0081] The optical fiber conversion and intelligent management unit may perform photoelectric conversion on the optical signal received by the extension unit, and monitor and adjust the amplitude of the optical signal received by the extension unit in real time, which is not limited in the embodiment of the present invention.

[0082] As another embodiment, the active antenna unit further includes a power management unit; the power management unit is used to control the power supply unit.

[0083] Specifically, the power management unit in the active antenna unit can obtain the parameters of the electricity provided by the power supply unit to the active antenna unit and the coverage unit respectively from the power supply unit of the extension unit, and control and adjust the electricity provided by the power supply unit to the active antenna unit and the coverage unit respectively, for example: adjusting the voltage of the electricity provided by the power supply unit to the active antenna unit and the coverage unit respectively. The embodiments of the present invention are not limited to this.

[0084] In one embodiment of the present invention, the covering unit can be used to transmit and receive radio frequency signals of different frequency bands; and to perform second signal processing on radio frequency signals of different segments; wherein the second signal processing may include amplification, gain adjustment, out-of-band suppression, etc., which is not limited in this embodiment of the present invention.

[0085] Specifically, the coverage unit may include a plurality of second radio frequency units, and the plurality of second radio frequency units may be used for receiving and transmitting radio frequency signals, gain adjustment, out-of-band suppression, and the like.

[0086] The plurality of second radio frequency units may include a third radio frequency chain for radio frequency signals in the first frequency band, and a fourth radio frequency chain for radio frequency signals in the second frequency band.

[0087] As an example, the third RF link includes a third uplink RF link and a third downlink RF link; the third uplink RF link includes: a third filter, a third RF switch, a fifth digitally controlled attenuator, a fifth gain module, a fifth frequency-selective bandpass filter, a third power amplifier, a fourth RF switch and a fourth filter connected in sequence; the third downlink RF link includes: a fourth filter, a fourth RF switch, a third low-noise amplifier, a sixth digitally controlled attenuator, a sixth gain module, a sixth frequency-selective bandpass filter, a third RF switch and a third filter connected in sequence.

[0088] The third filter may be connected to a fiber conversion unit of the covering unit to receive the optical signal sent from the extension unit through the fiber conversion unit.

[0089] The third and fourth RF switches can be used to control the microwave signal channel conversion.

[0090] The fifth digitally controlled attenuator can be used to process the radio frequency signal corresponding to the frequency band in the 5G mode sent from the base station to the user terminal, thereby realizing automatic adjustment of the downlink gain.

[0091] The fifth gain module can be used to amplify small signals to meet the gain range required by the receiving link.

[0092] The fifth frequency selection bandpass filter can be used to select the frequency band according to the fed signal (for example, the RF signal corresponding to the frequency band in the 5G mode sent from the base station to the user terminal) to improve the signal-to-noise ratio and out-of-band suppression performance of the signal.

[0093] The third power amplifier may be used to amplify the power of the signal.

[0094] In addition, the fourth filter, fourth RF switch, third low noise amplifier, sixth digitally controlled attenuator, sixth gain module, sixth frequency selective bandpass filter, third RF switch and third filter that constitute the third RF downlink have similar functions to the above-mentioned structure that constitutes the third uplink RF link, and will not be repeated here.

[0095] As another example, the fourth RF link may include a fourth uplink RF link and a fourth downlink RF link; the fourth uplink RF link includes: a third duplexer, a seventh digitally controlled attenuator, a seventh gain module, a seventh frequency selective bandpass filter, a fourth power amplifier and a fourth duplexer connected in sequence; the fourth downlink RF link includes: a fourth duplexer, a fourth low noise amplifier, an eighth digitally controlled attenuator, an eighth gain module, an eighth frequency selective bandpass filter and a third duplexer connected in sequence.

[0096] The third duplexer may be connected to a fiber conversion unit of the covering unit to receive the optical signal sent from the extension unit through the fiber conversion unit.

[0097] The third and fourth duplexers may be high-isolation duplexers, which are used to extract and separate uplink and downlink signals of FDD signals, while providing high isolation and suppression to prevent link self-excitation.

[0098] The fourth low noise amplifier can be used to process the radio frequency signal corresponding to the frequency band in the 4G mode sent from the base station to the user terminal to ensure that the gain and noise coefficient of the receiving link are good.

[0099] The seventh digitally controlled attenuator can be used to process the radio frequency signal corresponding to the frequency band in the 4G mode sent from the base station to the user terminal, so as to realize automatic adjustment of the downlink gain.

[0100] The seventh gain module can be used to amplify small signals to meet the gain range required by the receiving link.

[0101] The seventh frequency selection bandpass filter can be used to select the frequency band according to the fed signal (for example, the RF signal corresponding to the frequency band in the 4G mode sent from the base station to the user terminal) to improve the signal-to-noise ratio and out-of-band suppression performance of the signal.

[0102] The fourth power amplifier may be used to amplify the power of the signal.

[0103] In addition, the fourth duplexer, fourth low noise amplifier, eighth digitally controlled attenuator, eighth gain module, eighth frequency selective bandpass filter and third duplexer constituting the fourth downlink RF link have similar functions to the above-mentioned structure constituting the fourth uplink RF link and will not be repeated here.

[0104] It should be noted that the coverage unit may also include an RF combining unit to achieve reasonable output of multiple frequency bands; specifically, the RF combining unit may be connected to different second RF units respectively to combine and output RF signals of different frequency bands output by different second RF units.

[0105] Of course, the coverage unit may also output in split paths, which is not limited in the embodiment of the present invention.

[0106] In one embodiment of the present invention, the active antenna unit further includes a first monitoring synchronization unit, and the covering unit includes a second monitoring synchronization unit; the first monitoring synchronization unit and the second monitoring synchronization unit are used for signal synchronization between the active antenna unit and the covering unit.

[0107] Among them, the wireless micro-distribution system can perform synchronization signal processing on the radio frequency signal through the first monitoring synchronization unit in the active antenna unit and the second monitoring synchronization unit in the coverage unit; of course, system time synchronization processing can also be performed on the active antenna unit and the coverage unit, and the embodiment of the present invention does not limit this.

[0108] As an example, the first monitoring synchronization unit may also be used to monitor the working status of the extension unit and the coverage unit.

[0109] Specifically, the first monitoring synchronization unit may obtain corresponding working states from the extension unit and the covering unit, and detect whether an abnormality occurs in the extension unit and the covering unit based on the working state information.

[0110] As another example, the first monitoring synchronization unit may also perform corresponding upgrades on the extension unit and the coverage unit based on the upgrade of the active antenna unit, thereby eliminating the need for the user to upgrade the extension unit and the coverage unit one by one.

[0111] In one embodiment of the present invention, the active antenna unit can be connected to the extension unit via optical fiber, and the extension unit can be connected to the coverage unit via optical fiber to reduce link loss and provide a more stable coverage effect.

[0112] As an example, MIMO (Multiple-InMultiple Out) 2T2R can be supported by transmitting a group of signals through dual fibers.

[0113] The following is an example of the structure and partial structure of the wireless micro-distribution system in the embodiment of the present invention:

[0114] like Figure 2 , showing a schematic structural diagram of a wireless micro-distribution system according to an embodiment of the present invention; wherein the wireless micro-distribution system may include an active antenna unit, an extension unit and a coverage unit.

[0115] One active antenna unit can be connected to at least two extension units, and one extension unit can be connected to at least two coverage units.

[0116] like Figure 3 , showing a schematic structural diagram of an active antenna unit according to an embodiment of the present invention; wherein the active antenna unit may include: a broadband dual-polarization active antenna, a first radio frequency unit 1, a first radio frequency unit 2, a first monitoring synchronization unit, a power management unit and a first optical fiber conversion unit.

[0117] like Figure 4a , showing a structural schematic diagram of a first radio frequency unit for 4G in an embodiment of the present invention; wherein the first radio frequency unit for 4G is connected to the 4G broadband antenna and the first optical fiber conversion unit respectively; the first radio frequency unit for 4G may include a first uplink radio frequency link and a first downlink radio frequency link.

[0118] The first uplink radio frequency link may include: a first duplexer, a first low noise amplifier, a first digitally controlled attenuator, a first gain module, a first frequency selective bandpass filter, and a second duplexer connected in sequence.

[0119] The first downlink radio frequency link may include: a second duplexer, a second digitally controlled attenuator, a second gain module, a second frequency-selective bandpass filter, a first power amplifier, and a first duplexer connected in sequence.

[0120] like Figure 4b , showing a structural schematic diagram of a first radio frequency unit for 5G in an embodiment of the present invention; wherein the first radio frequency unit for 5G is connected to the 5G broadband antenna and the first optical fiber conversion unit respectively; the first radio frequency unit for 5G may include a second uplink radio frequency link and a second downlink radio frequency link.

[0121] The second uplink radio frequency link includes: a first filter, a first radio frequency switch, a second low noise amplifier, a third digitally controlled attenuator, a third gain module, a third frequency selective bandpass filter, a second radio frequency switch and a second filter connected in sequence.

[0122] The second downlink radio frequency link includes: a second filter, a second radio frequency switch, a fourth digitally controlled attenuator, a fourth gain module, a fourth frequency-selective bandpass filter, a second power amplifier, a first radio frequency switch and a first filter connected in sequence.

[0123] like Figure 5, showing a schematic structural diagram of an extension unit according to an embodiment of the present invention; wherein the extension unit may include a first optical fiber conversion intelligent unit, a second optical fiber conversion intelligent unit, an optical path distribution unit and a power supply unit.

[0124] like Figure 6 , showing a schematic structural diagram of a covering unit according to an embodiment of the present invention; wherein the covering unit may include a second optical fiber conversion unit, a second radio frequency unit 1, a second radio frequency unit 2, a second monitoring synchronization unit and a radio frequency combining unit.

[0125] like Figure 7 , showing a schematic structural diagram of a second radio frequency unit for 5G and a second radio frequency unit for 4G according to an embodiment of the present invention.

[0126] Among them, the second radio frequency unit for 5G is respectively connected to the second optical fiber conversion unit and the radio frequency combining unit; the second radio frequency unit for 5G may include a third uplink radio frequency link and a third downlink radio frequency link.

[0127] The third uplink radio frequency link includes: a third filter, a third radio frequency switch, a fifth digitally controlled attenuator, a fifth gain module, a fifth frequency-selective bandpass filter, a third power amplifier, a fourth radio frequency switch and a fourth filter connected in sequence.

[0128] The third downlink radio frequency link includes: a fourth filter, a fourth radio frequency switch, a third low noise amplifier, a sixth digitally controlled attenuator, a sixth gain module, a sixth frequency selective bandpass filter, a third radio frequency switch and a third filter connected in sequence.

[0129] The second radio frequency unit for 4G is connected to the second optical fiber conversion unit and the radio frequency combining unit respectively; the second radio frequency unit for 4G may include a fourth uplink radio frequency link and a fourth downlink radio frequency link.

[0130] The fourth uplink radio frequency link includes: a third duplexer, a seventh digitally controlled attenuator, a seventh gain module, a seventh frequency-selective bandpass filter, a fourth power amplifier and a fourth duplexer connected in sequence.

[0131] The fourth downlink radio frequency link includes: a fourth duplexer, a fourth low noise amplifier, an eighth digitally controlled attenuator, an eighth gain module, an eighth frequency-selective bandpass filter and a third duplexer connected in sequence.

[0132] The fourth filter in the second radio frequency unit for 5G and the fourth duplexer in the second radio frequency unit for 4G are respectively connected to the radio frequency combining unit.

[0133] A wireless micro-distribution system according to an embodiment of the present invention comprises: an active antenna unit, an extension unit and a coverage unit, wherein the active antenna unit is connected to the extension unit, and the extension unit is connected to the coverage unit; the active antenna unit comprises a wideband dual-polarization active antenna and a plurality of first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to transmit and receive radio frequency signals of different frequency bands, and the plurality of first radio frequency units are used to perform first signal processing on radio frequency signals of different frequency bands; the extension unit is used to forward optical signals sent by the active antenna unit to the coverage unit; and is used to forward optical signals sent by the coverage unit to the active antenna unit; the coverage unit is used to transmit and receive radio frequency signals of different frequency bands; and is used to perform second signal processing on radio frequency signals of different segments. Through the embodiment of the present invention, the transmission, reception and processing of radio frequency signals of different frequency bands by a wireless micro-distribution system deployed with a wideband active antenna is realized, so that the wireless micro-distribution system supports the simultaneous coverage of multiple frequency bands of 5G wireless signals, thereby making the wireless micro-distribution system highly integrated; and through the wideband antenna, the volume occupied by the wireless micro-distribution system can be reduced; thereby reducing the cost and difficulty of engineering construction.

[0134] And through the design of frequency-selective bandpass filters, the requirements for actual networking frequency band selection can be met, further reducing equipment and construction costs.

[0135] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0136] The wireless micro-distribution system provided is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A wireless micro-distribution system, characterized in that: The system comprises an active antenna unit, an extension unit and a covering unit, wherein the active antenna unit is connected to the extension unit, and the extension unit is connected to the covering unit; The active antenna unit includes a wideband dual-polarization active antenna and a plurality of first radio frequency units for different frequency bands; the wideband dual-polarization active antenna is used to transmit and receive radio frequency signals of different frequency bands, and the plurality of first radio frequency units are used to perform first signal processing on radio frequency signals of different frequency bands; the first signal processing includes at least one of amplification, gain adjustment, and out-of-band suppression; The extension unit is used to forward the optical signal sent by the active antenna unit to the coverage unit; and, used to forward the optical signal sent by the coverage unit to the active antenna unit; The covering unit is used to transmit and receive radio frequency signals of different frequency bands; and is used to perform second signal processing on radio frequency signals of different segments; the second signal processing includes at least one of amplification, gain adjustment, and out-of-band suppression; the multiple first radio frequency units include a first radio frequency link for radio frequency signals of a first frequency band, and a second radio frequency link for radio frequency signals of a second frequency band.

2. The system according to claim 1, characterized in that The active antenna unit further includes a radio frequency board, the radio frequency board is connected to the broadband dual-polarization active antenna and a feeder, the other end of the feeder is connected to a base station, and the plurality of first radio frequency units are respectively connected to the radio frequency board; The radio frequency board receives and sends radio frequency signals of different frequency bands by wired coupling feeding; and receives and sends radio frequency signals of different frequency bands by wireless feeding.

3. The system according to claim 1, characterized in that The broadband dual-polarization active antenna includes a broadband antenna for radio frequency signals of different frequency bands.

4. The system according to claim 1, characterized in that The extension unit includes an optical path distribution unit and a power supply unit; The optical path distribution unit is used to distribute the optical signal sent by the active antenna unit to the covering unit; and to forward the optical signal sent by the covering unit to the active antenna unit; The power supply unit is used to supply power to the active antenna unit and the covering unit.

5. The system according to claim 4, characterized in that The active antenna unit also includes a power management unit; The power management unit is used to control the power supply unit.

6. The system according to claim 1, characterized in that The active antenna unit further comprises a first monitoring synchronization unit, and the coverage unit comprises a second monitoring synchronization unit; The first monitoring synchronization unit and the second monitoring synchronization unit are used for signal synchronization between the active antenna unit and the coverage unit.

7. The system according to claim 6, characterized in that The first monitoring and synchronization unit is further used to monitor the working status of the extension unit and the covering unit.

8. The system according to claim 1, characterized in that The first radio frequency link includes a first uplink radio frequency link and a first downlink radio frequency link; The first uplink radio frequency link includes: a first duplexer, a first uplink first low noise amplifier, a first digitally controlled attenuator, a first gain module, a first frequency-selective bandpass filter, and a second duplexer connected in sequence; the first downlink radio frequency link includes: a second duplexer, a second digitally controlled attenuator, a second gain module, a second frequency-selective bandpass filter, a first power amplifier, and a first duplexer connected in sequence; The second radio frequency link includes a second uplink radio frequency link and a second downlink radio frequency link; The second uplink RF link includes: a first filter, a first RF switch, a second low-noise amplifier, a third digitally controlled attenuator, a third gain module, a third frequency-selective bandpass filter, a second RF switch, and a second filter connected in sequence; the second downlink RF link includes: a second filter, a second RF switch, a fourth digitally controlled attenuator, a fourth gain module, a fourth frequency-selective bandpass filter, a second power amplifier, a first RF switch, and a first filter connected in sequence.

9. The system according to claim 1, characterized in that The coverage unit includes a plurality of second radio frequency units, the plurality of second radio frequency units including a third radio frequency link for radio frequency signals of the first frequency band, and a fourth radio frequency link for radio frequency signals of the second frequency band; The third radio frequency link includes a third uplink radio frequency link and a third downlink radio frequency link; The third uplink radio frequency link includes: a third filter, a third radio frequency switch, a fifth digitally controlled attenuator, a fifth gain module, a fifth frequency-selective bandpass filter, a third power amplifier, a fourth radio frequency switch, and a fourth filter connected in sequence; the third downlink radio frequency link includes: a fourth filter, a fourth radio frequency switch, a third low-noise amplifier, a sixth digitally controlled attenuator, a sixth gain module, a sixth frequency-selective bandpass filter, a third radio frequency switch, and a third filter connected in sequence; The fourth radio frequency link includes a fourth uplink radio frequency link and a fourth downlink radio frequency link; The fourth uplink radio frequency link includes: a third duplexer, a seventh digitally controlled attenuator, a seventh gain module, a seventh frequency-selective bandpass filter, a fourth power amplifier and a fourth duplexer connected in sequence; the fourth downlink radio frequency link includes: a fourth duplexer, a fourth low-noise amplifier, an eighth digitally controlled attenuator, an eighth gain module, an eighth frequency-selective bandpass filter and a third duplexer connected in sequence.

10. The system according to claim 1, characterized in that The extension unit includes an optical fiber conversion intelligent management unit; The optical fiber conversion intelligent management unit is used to perform photoelectric conversion on the optical signal received by the extension unit, and to monitor and adjust the optical signal received by the extension unit.

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