WO2022227654A1 - 近端合路单元、远端合路单元及室内分布系统 - Google Patents
近端合路单元、远端合路单元及室内分布系统 Download PDFInfo
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- 238000010295 mobile communication Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
Definitions
- the present invention relates to the field of communication technologies, and in particular, to a near-end combining unit, a remote combining unit and an indoor distribution system.
- the indoor distribution system can be used to improve the mobile communication signal in the indoor environment.
- the mobile communication signal of the source such as a base station
- the indoor distribution system can be evenly distributed in every corner of the room, thereby ensuring ideal signal coverage in the indoor environment.
- the signal sources of the indoor distribution system mainly include the following: access the indoor distribution system with the macro cell as the signal source; access the indoor distribution system with the micro cell as the signal source; access the indoor distribution system with the repeater as the signal source.
- the repeater utilizes the spatial coupling of the donor antenna or the coupling device to directly couple the signal of the base station with excess capacity, and then amplifies the received signal, thereby providing it to the indoor distribution system.
- the near-end combining unit transfers the frequency of the signal to the far-end combining unit, and the far-end combining unit needs to move the signal to the original frequency before it can be used by the user. Since the near-end combiner unit and the far-end combiner unit are usually placed in different positions, the two cannot use the same reference local oscillator, resulting in a large deviation between the frequency of the far-end combiner unit and the original frequency after removal, and further As a result, the indoor distribution system cannot work properly.
- the embodiment of the present invention solves the technical problem that the frequency after the signal is moved by the remote combining unit has a large deviation from the original frequency of the signal.
- an embodiment of the present invention provides a near-end combining unit, including: a near-end first signal path, multiple near-end second signal paths, a first communication monitoring module, and a combiner, wherein: The one near-end first signal path is coupled to the first signal source and outputs the near-end first signal; the multiple near-end second signal paths, each near-end second signal path is respectively connected with the second signal source Coupling, the frequency of the near-end second signal output by the second signal source is shifted to different frequency points respectively to form a multi-channel near-end third signal; the first communication monitoring module is respectively connected with any second signal.
- the source channel, the near-end first signal path, and the multi-channel near-end second signal path are coupled, and are suitable for performing the multi-channel operation on the near-end first signal and the near-end second signal according to the near-end first signal and the near-end second signal.
- the frequency offset calibration is performed on the reference signal input by the mixer in the near-end second signal path, and the near-end fourth signal is output through the monitoring signal path of the preset frequency; the near-end first signal and the near-end first signal are measured.
- the signal parameter information of the second signal is used as the near-end signal parameter information; the far-end monitoring parameter information uploaded by the far-end is obtained through the near-end fourth signal; based on the near-end signal parameter information and the far-end monitoring parameter information, Control the on-off of the multi-channel near-end second signal path, and transmit the near-end signal parameter information through the near-end fourth signal; the combiner is adapted to combine the near-end first signal, The multi-channel near-end third signal and the near-end fourth signal are combined into a near-end fifth signal and output; the combiner is adapted to combine the near-end first signal, the multi-channel near-end signal The third signal and the near-end fourth signal are combined into a near-end fifth signal and output;
- the near-end combining unit further includes: a first coupler disposed on the near-end first signal path and adapted to couple the near-end first signal to the first communication monitoring module ; a second coupler, disposed on any near-end second signal path, suitable for coupling the near-end second signal to the first communication monitoring module.
- the near-end second signal path includes: a first radio frequency front-end module, a near-end transmitting channel, a near-end receiving channel, and a first switch; the first radio frequency front-end module, the first signal end of which is input to the For the near-end second signal, the second signal end is coupled to the input end of the near-end transmitting channel, the third signal end is coupled to the output end of the near-end receiving channel, and the control signal input end is input to the The second control signal output by the first communication monitoring module; the second control signal is suitable for controlling the on-off of the near-end transmitting channel and the near-end receiving channel; the output end of the near-end transmitting channel is connected to The first moving end of the first switch is coupled; the input end of the near-end receiving channel is coupled with the second moving end of the first switch; the fixed end of the first switch is connected to The combiner is coupled, and its control end inputs a first control signal output by the first communication monitoring module, and the first control signal is suitable for controlling the selection of the near
- the near-end transmission channel includes: a first mixer, a first low-noise amplifier and a first filter, wherein: the first mixer has a first input end connected to the first radio frequency
- the second signal terminal of the front-end module is coupled to the second input terminal of which the reference signal is input;
- the input terminal of the first filter is coupled to the output terminal of the first mixer;
- the noise amplifier the input end of which is coupled to the output end of the first filter, and the output end of which is coupled to the first moving end of the first switch.
- the near-end receiving channel includes: a second mixer, a second low-noise amplifier, a second filter and a third filter, wherein: the second low-noise amplifier has an input end connected to the The second moving end of the first switch is coupled; the input end of the second filter is coupled to the output end of the second low noise amplifier; the first input end of the second mixer is connected to The output end of the second filter is coupled to the second input end of which the reference signal is input; the input end of the third filter is coupled to the output end of the second mixer, and the output end of the third filter is coupled to the third signal terminal of the first radio frequency front-end module.
- the first radio frequency front-end module includes: a second switch, a third low-noise amplifier, a first power amplifier and a fourth filter, wherein: the fourth filter is coupled to the second Between the switch and the second signal source, it is suitable for filtering the near-end second signal; for the second switch, the fixed end is coupled to the fourth filter, and the first moving The terminal is coupled to the input terminal of the third low-noise amplifier, and the second moving terminal is coupled to the output terminal of the first power amplifier; the output terminal of the third low-noise amplifier is connected to the near-end transmitter The input end of the channel is coupled; the input end of the first power amplifier is coupled to the output end of the near-end receiving channel.
- An embodiment of the present invention further provides a remote combining unit, including: a power divider, a remote first signal path, multiple remote second signal paths, and a second communication monitoring module, wherein: the power division The device transmits the remote fifth signal, and divides the frequency of the remote fifth signal to obtain one remote first signal, multiple remote third signals and remote fourth signals; the one remote first signal The signal path is suitable for transmitting the remote first signal to the first antenna; the multi-path remote second signal path is suitable for frequency-shifting the remote third signal of different frequency points to the remote terminal of a fixed frequency point.
- the second signal of the remote end is transmitted, and the second signal of the remote end is transmitted to the corresponding second antenna;
- the second communication monitoring module is adapted to, according to the first signal of the remote end and the second signal of the remote end,
- the frequency offset calibration is performed on the reference signal input by the mixer in the multi-channel far-end second signal path;
- the near-end signal parameter information is obtained through the far-end fourth signal; and the difference between the far-end first signal and the
- the signal parameter information of the remote second signal is used as remote monitoring parameter information, and is transmitted to the power divider through the remote fourth signal; based on the remote monitoring parameter information and the near-end signal parameters information to control the on-off of the multiple remote second signal paths.
- the remote combining unit further includes: a third coupler disposed on the remote first signal path and adapted to couple the remote first signal to the second communication monitoring module ; a fourth coupler, disposed on any of the remote second signal paths, suitable for coupling the remote second signal to the second communication monitoring module.
- the remote second signal path includes: a second radio frequency front-end module, a remote transmit channel, a remote receive channel, and a third switch, wherein: the second radio frequency front-end module, its first signal end It is coupled to the corresponding second antenna, the second signal end is coupled to the input end of the remote transmitting channel, the third signal end is coupled to the output end of the remote receiving channel, and the control signal end is input
- the third control signal is suitable for controlling the on-off of the remote transmitting channel and the remote receiving channel;
- the output terminal of the remote transmitting channel is is coupled to the first moving end of the second switch;
- the input end of the remote receiving channel is coupled to the second moving end of the second switch;
- the third switch has a fixed end It is coupled to the power divider, and its control terminal inputs the fourth control signal output by the second communication monitoring module, and the fourth control signal is suitable for controlling the selection of the remote transmission channel or the remote reception channel .
- the remote transmission channel includes: a third mixer, a fourth low-noise amplifier, and a fifth filter, wherein: the third mixer has a first input end connected to the second radio frequency The second signal terminal of the front-end module is coupled to the second input terminal of which the reference signal is input; the input terminal of the fifth filter is coupled to the output terminal of the third mixer; a noise amplifier, the input end of which is coupled to the output end of the fifth filter, and the output end of which is coupled to the first moving end of the third switch.
- the remote receiving channel includes: a fourth mixer, a fifth low-noise amplifier, a sixth filter, and a seventh filter, wherein: the fifth low-noise amplifier has an input end connected to the The second movable end of the third switch is coupled; the input end of the sixth filter is coupled to the output end of the fifth low-noise amplifier; the first input end of the fourth mixer is connected to The output end of the sixth filter is coupled to the second input end of which the reference signal is input; the input end of the seventh filter is coupled to the output end of the fourth mixer, and the output end of the seventh filter is coupled to the third signal terminal of the second radio frequency front-end module.
- the second radio frequency front-end module includes: a fourth switch, a sixth low-noise amplifier, a second power amplifier, and an eighth filter, wherein: the eighth filter is coupled to the fourth Between the switch and the second antenna, it is suitable for filtering the remote second signal; the fourth switch has a fixed end coupled to the eighth filter, and a first moving end of the fourth switch. is coupled to the input end of the sixth low noise amplifier, and the second moving end thereof is coupled to the output end of the second power amplifier; the output end of the sixth low noise amplifier is connected to the remote transmission channel The input end of the second power amplifier is coupled to the output end of the remote transmission channel.
- An embodiment of the present invention further provides an indoor distribution system, including any of the above-mentioned near-end combining units and any of the above-mentioned remote combining units, the near-end combining unit and the The remote combining units are connected by cables.
- the frequency offset calibration is performed on the reference signals input by the mixers in the multi-channel near-end second signal paths through the near-end first signal and the near-end second signal;
- the frequency offset calibration is performed on the reference signals input by the mixers in the multiple remote second signal paths.
- the frequency of the near-end first signal is the same as that of the far-end first signal
- the frequency of the near-end second signal is the same as that of the far-end second signal. Therefore, the calibration direction of the frequency offset calibration for the reference signal is the same, which can reduce the frequency of the far end. The deviation between the frequency after the end combiner unit is moved and the frequency of the original signal.
- FIG. 1 is a schematic structural diagram of a near-end combining unit in an embodiment of the present invention
- FIG. 2 is a schematic structural diagram of a remote combining unit in an embodiment of the present invention.
- the near-end combining unit and the far-end combining unit are usually placed in different positions, the two cannot use the same reference local oscillator, resulting in the frequency of the far-end combining unit after being moved There is a large deviation in the original frequency, which leads to the failure of the indoor distribution system to work normally.
- frequency offset calibration is performed on the reference signals input by the mixers in the multi-channel near-end second signal paths by using the near-end first signal and the near-end second signal;
- the remote second signal is used to perform frequency offset calibration on the reference signals input by the mixers in the multiple remote second signal paths.
- the frequency of the near-end first signal is the same as that of the far-end first signal
- the frequency of the near-end second signal is the same as that of the far-end second signal. Therefore, the calibration direction of the frequency offset calibration for the reference signal is the same, which can reduce the frequency of the far end. The deviation between the frequency after the end combiner unit is moved and the frequency of the original signal.
- An embodiment of the present invention provides a near-end combining unit.
- FIG. 1 a schematic structural diagram of a near-end combining unit in an embodiment of the present invention is given.
- the near-end combining unit includes: one near-end first signal path, multiple near-end second signal paths, a first communication monitoring module, and a combiner.
- the near-end combining unit may include a near-end first signal path, the input end of the near-end first signal path is coupled to the first signal source, and the output end of the near-end first signal path outputs the near-end first signal path. a signal.
- the near-end first signal may be a signal output by the first signal source.
- the first signal source may be a 2G signal source, or may be a signal source in other network communication modes such as 3G and 4G.
- the near-end combining unit may include multiple near-end second signal paths, each near-end second signal path is respectively coupled to the second signal source, and the near-end second signal output by the second signal source The frequencies are shifted to different frequency points respectively to form a multi-channel near-end third signal.
- the near-end combining unit includes two near-end second signal paths, the first near-end second signal path shifts the frequency of the near-end second signal output by the second signal source to F1, and the second near-end second signal path The second signal path shifts the frequency of the near-end second signal output by the second signal source to F2, and the frequency corresponding to F1 is not equal to the frequency corresponding to F2.
- the second signal source may be a 5G signal source, or may be a signal source of other network communication modes, such as the subsequent evolution of 5G.
- the second information source and the first information source respectively belong to different network communication modes.
- the second signal source is a 5G signal source
- the first signal source is any one or more of a 2G signal source, a 3G signal source, and a 4G signal source.
- the first signal source and the second signal source essentially refer to the signal sources received by the indoor distribution system. If the second signal source is a 5G signal source, it means that the second signal source can be a 5G signal received by the indoor distribution system. Correspondingly, if the first signal source is a 4G signal source, it means that the first signal source may be a 4G signal received by the indoor distribution system.
- the first communication monitoring module is respectively coupled to any second information source channel, the near-end first signal path and the multiple near-end second signal paths.
- the first communication monitoring module may perform frequency offset calibration on the reference signal Ref input by the mixers in the multi-channel near-end second signal paths according to the near-end first signal and the near-end second signal.
- the first communication monitoring module can also output the near-end fourth signal through the monitoring signal path of the preset frequency, and obtain the far-end monitoring parameter information uploaded by the far-end through the near-end fourth signal; measure the near-end first signal and the near-end second signal.
- the signal parameter information of the signal based on the signal parameter information of the near-end first signal, the signal parameter information of the near-end second signal, and the far-end monitoring parameter information, control the on-off of the multi-channel near-end second signal path, and pass the near-end
- the fourth signal transmits near-end signal parameter information, where the near-end signal parameter information includes: measured signal parameter information of the near-end first signal and signal parameter information of the near-end second signal.
- a crystal oscillator XO may be provided in the first communication monitoring module, and the reference signal Ref is provided through the crystal oscillator XO.
- the second signal source channel may include a near-end second signal path and a gain adjustment gain adjuster (ATT) corresponding to the near-end second signal path.
- ATT gain adjustment gain adjuster
- the near-end combining unit may further include a first coupler U1 and a second coupler U2, wherein: the first coupler U1 may be disposed on the near-end first signal path, and is suitable for the near-end first coupler U1 The signal is coupled to the first communication monitoring module; the second coupler U2 can be disposed on the second signal source channel coupled to the first communication monitoring module, and is suitable for coupling the proximal second signal to the first communication monitoring module.
- the near-end first signal and the near-end second signal are coupled to the first communication monitoring module, so that the first communication monitoring module can obtain the near-end first signal and the near-end second signal.
- the frequency of the second signal at the end is used to make the first communication monitoring module calibrate the frequency of the reference signal Ref input by the mixer according to the frequency difference between the first signal at the near end and the second signal at the near end.
- the first communication monitoring module can measure the signal parameter information of the near-end first signal and the signal parameter information of the near-end second signal, and use the measured signal parameter information of the near-end first signal and the near-end second signal.
- the signal parameter information is used as the near-end signal parameter information.
- the near-end signal parameter information may include at least one of timing matching information of the near-end first signal and multiple near-end second signals, frame header position information, and related power parameter information.
- the corresponding structures may be the same.
- any near-end second signal path may include a first radio frequency front-end module, a near-end transmit channel, a near-end receive channel, and a first switch S1, where:
- the first RF front-end module the first signal terminal of which can input the second signal of the near-end, the second signal terminal of which can be coupled with the input terminal of the near-end transmitting channel, and the third signal terminal of which can be connected with the output terminal of the near-end receiving channel coupled, its control signal input terminal can input the second control signal output by the first communication monitoring module, and the second control signal can be suitable for controlling the on-off of the near-end transmitting channel and the near-end receiving channel;
- the output end of the near-end transmission channel can be coupled with the first moving end of the first switch S1;
- the input end of the near-end receiving channel can be coupled with the second moving end of the first switch S1;
- the fixed end of the first switch S1 can be coupled to the combiner, and the control end of the first switch S1 can input the first control signal output by the first communication monitoring module; under the control of the first control signal, the first switch S1 can select It is coupled with the output end of the near-end transmitting channel, that is, the near-end transmitting channel is turned on to realize the near-end transmitting function; or, under the control of the first control signal, the first switch S1 selects a The input end is coupled, that is, the near-end receiving channel is turned on, so as to realize the near-end receiving function.
- the near-end transmit channel may include: a first mixer M1, a first low-noise amplifier L1 and a first filter FL1, wherein:
- the first mixer M1 the first input terminal of which is coupled to the second signal terminal of the first RF front-end module, and the second input terminal of which inputs the reference signal Ref;
- the input end of the first filter FL1 is coupled to the output end of the first mixer M1, and the output end thereof is coupled to the first end of the first switch S1.
- the frequency corresponding to the reference signal Ref may be 26 MHz.
- the frequency of the reference signal Ref can also be other values, which is not limited to the above example.
- the near-end receiving channel may include: a second mixer M2, a second low-noise amplifier L2 and a third filter FL3, wherein:
- the input end of the second low noise amplifier L2 can be coupled to the second moving end of the first switch S1;
- the input end of the second filter FL2 can be coupled to the output end of the second low noise amplifier L2;
- the second mixer M2 the first input terminal of which can be coupled to the output terminal of the second filter FL2, and the second input terminal of which can input the reference signal Ref;
- the input end of the third filter FL3 can be coupled to the output end of the second mixer M2, and the output end of the third filter FL3 can be coupled to the third signal end of the first RF front-end module.
- the first radio frequency front-end module may include: a second switch S2, a third low-noise amplifier L3, a first power amplifier P1 and a fourth filter FL4, wherein:
- the fourth filter FL4 the input end of which can input the near-end second signal
- the fixed end of the second switch S2 can be coupled to the output end of the fourth filter FL4, the first movable end of the switch S2 can be coupled to the input end of the third low noise amplifier L3, and the second movable end of the second switch S2 can be coupled to the input end of the third low noise amplifier L3. the output end of the power amplifier P1 is coupled;
- the output of the third low noise amplifier L3 can be coupled to the input end of the near-end transmission channel
- the input end of the first power amplifier P1 can be coupled to the output end of the near-end receiving channel.
- the role of the low noise amplifier may be: amplifying the signal input to it, and reducing the introduction of noise.
- the function of the filter can be: filtering the input signal.
- frequency migration may be implemented by a mixer in the near-end second signal path.
- the mixer in the near-end second signal path may include a voltage controlled oscillator (VCO) and a frequency mixing unit (Mixer).
- VCO voltage controlled oscillator
- Mcixer frequency mixing unit
- a corresponding near-end third signal is obtained, and the frequency point of the near-end third signal is located in a frequency band corresponding to the near-end first signal. within the range.
- the near-end first signal is a 4G network signal
- the frequency point F1 of the first near-end third signal and the frequency F2 of the second near-end third signal are both within the frequency range supported by the 4G network.
- the first communication monitoring module can control the switching sequence of the first switch S1 and the second switch S2 in the multi-channel near-end second signal path according to the near-end signal parameter information and the far-end monitoring parameter information, so that Each near-end second signal path and the near-end transmit channel and near-end receive channel in each near-end second signal path can be opened in an orderly manner, thereby realizing the transmission of signals from different sources and realizing the uplink and downlink on the same signal path. Orderly transfer of data.
- the first communication monitoring module may send a control signal to the corresponding near-end second signal path according to the time sequence based on the timing matching information of the plurality of near-end second signals, so as to control the corresponding near-end second signal Orderly opening and closing of pathways.
- the switches controlling all the near-end second signal paths are turned off.
- the near-end fifth signal transmitted by the combiner carries the data from the near-end first signal path; in the t2 time slot
- the near-end fifth signal transmitted by the router carries the downlink data of the near-end second signal path whose frequency is F1; in the t3 time slot, the control frequency of the near-end second signal path of the F1 frequency is the uplink data, then control The first switch S1 of the corresponding near-end second signal path and the first RF front-end module are both connected to the near-end receiving channel. At this time, the near-end fifth signal transmitted by the combiner carries the near-end frequency point F1.
- the near-end fifth signal transmitted by the combiner carries the downlink data of the near-end second signal path whose frequency point is F2;
- the first switch S1 of the corresponding near-end second signal path and the first RF front-end module are both connected to the near-end receiving channel.
- the near-end first signal transmitted by the combiner is The fifth signal carries the uplink data of the near-end second signal path whose frequency point is F2.
- the first communication monitoring module outputs a first control signal to the first switch S1, and controls the fixed end of the first switch S1 to connect with the first moving terminal; the first communication monitoring module sends the first radio frequency front-end module to the first control signal.
- the second switch of S2 sends a second control signal to control the connection between the fixed end of the second switch S2 and its first movable end.
- the first communication monitoring module outputs the first control signal to the first switch S1, and controls the fixed terminal of the first switch S1 to connect with the second moving terminal; the first communication monitoring module sends the first control signal to the first radio frequency front-end module.
- the second switch of S2 sends a second control signal to control the connection between the fixed end of the second switch S2 and its second movable end.
- the first communication monitoring module outputs the first control signal to the first switch S1, and controls the fixed terminal of the first switch S1 to connect with the first moving terminal; the first communication monitoring module sends a signal to the first radio frequency front-end module.
- the second switch of S2 sends a second control signal to control the connection between the fixed end of the second switch S2 and its first movable end.
- the first communication monitoring module outputs the first control signal to the first switch S1, and controls the fixed end of the first switch S1 to connect with the second moving terminal; the first communication monitoring module sends the first control signal to the first radio frequency front-end module.
- the second switch of S2 sends a second control signal to control the connection between the fixed end of the second switch S2 and its second movable end.
- the first communication monitoring module can also output the measured near-end signal parameter information to the combiner through the near-end fourth signal, and the combiner is coupled to the remote combining unit through a cable, so as to connect the The near-end signal parameter information is output to the far-end combining unit.
- the cable may be a passive distribution cable.
- the passive distribution cable Through the passive distribution cable, the 5G signal and other network mode signals can be transmitted in the same passive distribution cable.
- An embodiment of the present invention further provides a remote combining unit.
- a remote combining unit in an embodiment of the present invention is shown.
- the remote combining unit includes: a power divider, a remote first signal path, multiple remote second signal paths, and a second communication monitoring module, wherein:
- the power divider can transmit the remote fifth signal, and divide the frequency of the remote fifth signal to obtain one channel of the remote first signal, multiple channels of the remote third signal and the remote fourth signal.
- the power divider can receive the remote fifth signal through the single-channel cable.
- the frequencies corresponding to the near-end third signals on the two near-end second signal paths are F1 and F2 respectively.
- the far-end third signals on the two remote-end second signal paths The corresponding frequencies are also F1 and F2, respectively.
- the remote first signal path is a single channel and is suitable for transmitting the remote first signal to the first antenna.
- the multi-channel remote second signal path is suitable for frequency-shifting the remote third signal of different frequency points to the remote second signal of a fixed frequency point, and transmitting the remote second signal to the corresponding second antenna.
- the second communication monitoring module is adapted to perform frequency offset calibration on the reference signal Ref input by the mixers in the multiple remote second signal paths according to the remote first signal and the remote second signal;
- the signal obtains the near-end signal parameter information;
- the signal parameter information of the far-end first signal and the far-end second signal is measured and used as the far-end monitoring parameter information, and transmitted to the power divider through the far-end fourth signal; based on the far-end monitoring
- the parameter information and the near-end signal parameter information control the on-off of the multiple remote second signal paths.
- the remote first signal may be a 2G/3G/4G signal
- the remote second signal may be a 5G signal.
- the remote first signal and the remote second signal belong to different network communication modes.
- the far-end first signal may correspond to the above-mentioned near-end first signal, and the corresponding signals may both be 2G/3G/4G signals.
- the far-end second signal may correspond to the above-mentioned near-end second signal, and the corresponding signals may all be 5G signals.
- a crystal oscillator XO may be provided in the second communication monitoring module, and the reference signal Ref is provided through the crystal oscillator XO.
- the oscillation frequency of the crystal oscillator XO in the second communication monitoring module may be equal to the oscillation frequency of the crystal oscillator XO in the first communication monitoring module in the foregoing embodiment.
- the oscillation frequency of the crystal oscillator XO in the first communication monitoring module is 26 MHz
- the oscillation frequency of the crystal oscillator XO in the second communication monitoring module is also 26 MHz.
- the remote combining unit may further include a third coupler U3 and a fourth coupler U4, wherein:
- the third coupler U3 can be disposed on the remote first signal path, and is suitable for coupling the remote first signal to the second communication monitoring module;
- the fourth coupler U4 can be disposed on the remote second signal path, and is suitable for coupling the remote second signal to the second communication monitoring module.
- the remote first signal and the remote second signal are coupled to the second communication monitoring module, so that the second communication monitoring module can obtain the The frequencies of the remote first signal and the remote second signal, so that the second communication monitoring module can perform the frequency difference of the reference signal Ref input by the mixer according to the frequency difference between the remote first signal and the remote second signal. calibration.
- the second communication monitoring module can measure the signal parameter information of the remote first signal and the signal parameter information of the remote second signal, and use the measured signal parameter information of the remote first signal and the remote second signal. The signal parameter information is used as the remote monitoring parameter information.
- the corresponding structures may be the same.
- any remote second signal path it may include: a second radio frequency front-end module, a remote transmit channel, a remote receive channel, and a third switch S3, where:
- the first signal terminal of the second RF front-end module is coupled to the corresponding second antenna, the second signal terminal of the second RF front-end module is coupled to the input terminal of the remote transmission channel, and the third signal terminal of the second RF front-end module It is coupled with the output end of the remote receiving channel, and the control signal end of the second radio frequency front-end module inputs the third control signal output by the second communication monitoring module; the third control signal is suitable for controlling the communication between the remote transmitting channel and the remote receiving channel. on and off;
- the output end of the remote transmission channel is coupled to the first moving end of the second switch S2;
- the input end of the remote receiving channel is coupled to the second movable end of the second switch S2;
- the fixed terminal of the third switch S3 is coupled to the power divider, and the control terminal of the third switch S3 inputs the fourth control signal output by the second communication monitoring module, and the fourth control signal is suitable for controlling the selection of the remote transmission channel or the remote transmission channel. end receive channel.
- the remote transmit channel may include: a third mixer M3, a fourth low-noise amplifier L4 and a fifth filter FL5, wherein:
- the first input end of the third mixer M3 is coupled to the second signal end of the second RF front-end module, and the second input end of the third mixer M3 inputs the reference signal Ref;
- the input end of the fifth filter FL5 is coupled to the output end of the third mixer M3;
- the input end of the fourth low noise amplifier L4 is coupled to the output end of the fifth filter FL5, and the output end of the fourth low noise amplifier L4 is coupled to the first moving end of the third switch S3.
- the remote receiving channel may include: a fourth mixer M4, a fifth low-noise amplifier L5, a sixth filter FL6, and a seventh filter FL7, wherein:
- the input end of the fifth low-noise amplifier L5 is coupled to the second moving end of the third switch S3;
- the input end of the sixth filter FL6 is coupled to the output end of the fifth low noise amplifier L5;
- the first input end of the fourth mixer M4 is coupled to the output end of the sixth filter FL6, and the second input end of the fourth mixer M4 inputs the reference signal Ref;
- the input end of the seventh filter FL7 is coupled to the output end of the fourth mixer M4, and the output end of the seventh filter FL7 is coupled to the third signal end of the second RF front-end module.
- the two radio frequency front-end modules include: a fourth switch S4, a sixth low-noise amplifier L6, a second power amplifier P2 and an eighth filter FL8, wherein:
- the eighth filter FL8 can be coupled between the fourth switch S4 and the second antenna, and is suitable for filtering the remote second signal;
- the fixed end of the fourth switch S4 is coupled to the eighth filter FL8, the first moving end of the fourth switch S4 is coupled to the input end of the sixth low noise amplifier L6, and the second moving end of the fourth switch S4 is coupled to the output end of the second power amplifier P2;
- the output end of the sixth low noise amplifier L6 is coupled to the input end of the remote transmission channel
- the input terminal of the second power amplifier P2 is coupled to the output terminal of the remote transmission channel.
- frequency migration may be implemented by a mixer in the remote second signal path.
- the frequency of the remote third signal is within the frequency band range corresponding to the remote first signal, and the frequency of the remote second signal is outside the frequency band range correspondingly supported by the remote first signal.
- the remote first signal is a 4G network signal
- the frequency of the frequency point F1 of the remote third signal is within the frequency range supported by the 4G network.
- the remote second signal is a 5G network signal.
- the mixer in the remote second signal path may include a voltage controlled oscillator (VCO) and a frequency mixing unit (Mixer).
- VCO voltage controlled oscillator
- Mcixer frequency mixing unit
- the second communication monitoring module can control the switching timing of the third switch S3 and the fourth switch S4 in the multi-channel remote second signal according to the remote monitoring parameter information and the near-end signal parameter information, so that each One remote second signal path and the remote transmitting channel and the remote receiving channel in each remote second signal path can be opened in an orderly manner, thereby realizing orderly transmission of uplink and downlink data on the same signal path.
- the frequency of the near-end first signal may be equal to the frequency of the far-end first signal
- the frequency of the near-end second signal may be equal to the frequency of the far-end second signal
- the remote combining unit there are two second antennas in the remote combining unit shown in FIG. 2 , corresponding to two receiving antennas and two transmitting antennas.
- the number of second antennas existing in the remote combining unit may also be 3, 4 or more, corresponding to the corresponding number of receiving antennas and transmitting antennas. This embodiment of the present invention does not limit the number of second antennas.
- the first signal at the near end is called the first signal at the near end
- the first signal at the far end is called the first signal at the far end
- the second signal at the near end is called the second signal at the near end signal
- the second signal is called the remote second signal at the far end.
- the third signal, the fourth signal and the fifth signal can be described in the same manner. Except for line loss and some interference, there is no essential difference between the corresponding signals at the near end and the far end.
- the fourth coupler U4 may be correspondingly disposed on the far-end second signal path with frequency F2.
- the first coupler U1 is arranged on the near-end second signal path with the frequency F1
- the third coupler U3 can be correspondingly arranged on the far-end second signal path with the frequency F2.
- the near-end combining unit and the far-end combining unit may correspond, and the near-end combining unit and the far-end combining unit form an indoor distribution system.
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Abstract
一种近端合路单元、远端合路单元及室内分布系统，所述室内分布系统包括上述的近端合路单元与远端合路单元，且所述近端合路单元与所述远端合路单元通过线缆连接。上述方案能够降低远端合路单元将信号搬移后的频率与信号的原频率偏差。
Description
本申请要求于2021年4月29日提交中国专利局、申请号为202110476511.0、发明名称为“近端合路单元、远端合路单元及室内分布系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本发明涉及通信技术领域，尤其涉及一种近端合路单元、远端合路单元以及室内分布系统。
在城市应用环境中，由于移动用户的飞速增加以及高层建筑的增多，话务密度和覆盖要求也不断上升，在大型建筑物、地下商场、地下停车场等室内环境下，移动通信信号较弱，极易形成移动通信的盲区和阴影区，导致手机等利用移动通信信号的终端无法正常使用。
目前室内分布系统可用于改善室内环境的移动通信信号，利用室内分布系统可将信源(如基站)的移动通信信号均匀分布在室内每个角落，从而保证室内环境下拥有理想的信号覆盖。
室内分布系统的信号源主要有以下几种：以宏蜂窝作为信号源接入室内分布系统；以微蜂窝作为信号源接入室内分布系统；以直放站作为信号源接入室内分布系统。其中，直放站是利用施主天线空间耦合或利用耦合器件直接耦合存在富余容量的基站信号，再对接收到的信号进行放大，从而提供给室内分布系统。
现有的室内分布系统中，由近端合路单元将信号移频传输至远端 合路单元，远端合路单元需要将信号搬移到原频率才能够供用户使用。由于近端合路单元与远端合路单元通常摆放在不同位置，因此，二者无法使用同一参考本振，导致远端合路单元搬移后的频率与原频率存在较大的偏差，进而导致室内分布系统无法正常工作。
发明内容
本发明实施例解决的是远端合路单元将信号搬移后的频率与信号的原频率偏差较大的技术问题。
为解决上述技术问题，本发明实施例提供一种近端合路单元，包括：一路近端第一信号通路、多路近端第二信号通路、第一通信监控模块以及合路器，其中：所述一路近端第一信号通路，与第一信源耦接，输出近端第一信号；所述多路近端第二信号通路，每一路近端第二信号通路分别与第二信源耦接，将所述第二信源输出的近端第二信号的频率分别移频至不同频点，形成多路近端第三信号；所述第一通信监控模块，分别与任一第二信源通道、所述近端第一信号通路以及所述多路近端第二信号通路耦接，适于根据所述近端第一信号与所述近端第二信号，对所述多路近端第二信号通路中的混频器输入的参考信号进行频偏校准，并通过预设频率的监控信号通路输出近端第四信号；测量所述近端第一信号与所述近端第二信号的信号参数信息，作为近端信号参数信息；通过所述近端第四信号获取远端上传的远端监控参数信息；基于所述近端信号参数信息、所述远端监控参数信息，控制所述多路近端第二信号通路的通断，并通过所述近端第四信号传输所述近端信号参数信息；所述合路器，适于将所述近端第一信号、所述多路近端第三信号、所述近端第四信号合并成近端第五信号并输出；所述合路器，适于将所述近端第一信号、所述多路近端第三信号、所述近端第四信号合并成近端第五信号并输出；
可选的，所述近端合路单元还包括：第一耦合器，设置于所述近端第一信号通路上，适于将所述近端第一信号耦合至所述第一通信监 控模块；第二耦合器，设置于任一近端第二信号通路上，适于将所述近端第二信号耦合至所述第一通信监控模块。
可选的，所述近端第二信号通路包括：第一射频前端模块、近端发射通道、近端接收通道以及第一切换开关；所述第一射频前端模块，其第一信号端输入所述近端第二信号，其第二信号端与所述近端发射通道的输入端耦接，其第三信号端与所述近端接收通道的输出端耦接，其控制信号输入端输入所述第一通信监控模块输出的第二控制信号；所述第二控制信号适于控制所述近端发射通道与所述近端接收通道的通断；所述近端发射通道，其输出端与所述第一切换开关的第一动端耦接；所述近端接收通道，其输入端与所述第一切换开关的第二动端耦接；所述第一切换开关，其定端与所述合路器耦接，其控制端输入所述第一通信监控模块输出的第一控制信号，所述第一控制信号适于控制选择所述近端发射通道或所述近端接收通道。
可选的，所述近端发射通道包括：第一混频器、第一低噪声放大器以及第一滤波器，其中：所述第一混频器，其第一输入端与所述第一射频前端模块的第二信号端耦接，其第二输入端输入所述参考信号；所述第一滤波器，其输入端与所述第一混频器的输出端耦接；所述第一低噪声放大器，其输入端与所述第一滤波器的输出端耦接，其输出端与所述第一切换开关的第一动端耦接。
可选的，所述近端接收通道包括：第二混频器、第二低噪声放大器、第二滤波器以及第三滤波器，其中：所述第二低噪声放大器，其输入端与所述第一切换开关的第二动端耦接；所述第二滤波器，其输入端与所述第二低噪声放大器的输出端耦接；所述第二混频器，其第一输入端与所述第二滤波器的输出端耦接，其第二输入端输入所述参考信号；所述第三滤波器，其输入端与所述第二混频器的输出端耦接，其输出端与所述第一射频前端模块的第三信号端耦接。
可选的，所述第一射频前端模块包括：第二切换开关、第三低噪声放大器、第一功率放大器以及第四滤波器，其中：所述第四滤波器， 耦接在所述第二切换开关与所述第二信源之间，适于对所述近端第二信号进行滤波处理；所述第二切换开关，其定端与所述第四滤波器耦接，其第一动端与所述第三低噪声放大器的输入端耦接，其第二动端与所述第一功率放大器的输出端耦接；所述第三低噪声放大器，其输出端与所述近端发射通道的输入端耦接；所述第一功率放大器，其输入端与所述近端接收通道的输出端耦接。
本发明实施例还提供了一种远端合路单元，包括：功分器、一路远端第一信号通路、多路远端第二信号通路以及第二通信监控模块，其中：所述功分器，传输远端第五信号，并将所述远端第五信号分频，得到一路远端第一信号、多路远端第三信号以及远端第四信号；所述一路远端第一信号通路，适于将所述远端第一信号传输至第一天线；所述多路远端第二信号通路，适于将不同频点的远端第三信号移频至固定频点的远端第二信号，并将所述远端第二信号传输至对应的第二天线；所述第二通信监控模块，适于根据所述远端第一信号与所述远端第二信号，对所述多路远端第二信号通路中的混频器输入的参考信号进行频偏校准；通过所述远端第四信号获取近端信号参数信息；测量得到所述远端第一信号与所述远端第二信号的信号参数信息，作为远端监控参数信息，并通过所述远端第四信号传输至所述功分器；基于所述远端监控参数信息以及所述近端信号参数信息，控制所述多路远端第二信号通路的通断。
可选的，所述远端合路单元还包括：第三耦合器，设置于所述远端第一信号通路上，适于将所述远端第一信号耦合至所述第二通信监控模块；第四耦合器，设置于任一所述远端第二信号通路上，适于将所述远端第二信号耦合至所述第二通信监控模块。
可选的，所述远端第二信号通路包括：第二射频前端模块、远端发射通道、远端接收通道以及第三切换开关，其中：所述第二射频前端模块，其第一信号端与对应的第二天线耦接，其第二信号端与所述远端发射通道的输入端耦接，其第三信号端与所述远端接收通道的输 出端耦接，其控制信号端输入所述第二通信监控模块输出的第三控制信号；所述第三控制信号适于控制所述远端发射通道与所述远端接收通道的通断；所述远端发射通道，其输出端与所述第二切换开关的第一动端耦接；所述远端接收通道，其输入端与所述第二切换开关的第二动端耦接；所述第三切换开关，其定端与所述功分器耦接，其控制端输入所述第二通信监控模块输出的第四控制信号，所述第四控制信号适于控制选择所述远端发射通道或所述远端接收通道。
可选的，所述远端发射通道包括：第三混频器、第四低噪声放大器以及第五滤波器，其中：所述第三混频器，其第一输入端与所述第二射频前端模块的第二信号端耦接，其第二输入端输入所述参考信号；所述第五滤波器，其输入端与所述第三混频器的输出端耦接；所述第四低噪声放大器，其输入端与所述第五滤波器的输出端耦接，其输出端与所述第三切换开关的第一动端耦接。
可选的，所述远端接收通道包括：第四混频器、第五低噪声放大器以及第六滤波器、第七滤波器，其中：所述第五低噪声放大器，其输入端与所述第三切换开关的第二动端耦接；所述第六滤波器，其输入端与所述第五低噪声放大器的输出端耦接；所述第四混频器，其第一输入端与所述第六滤波器的输出端耦接，其第二输入端输入所述参考信号；所述第七滤波器，其输入端与所述第四混频器的输出端耦接，其输出端与所述第二射频前端模块的第三信号端耦接。
可选的，所述第二射频前端模块包括：第四切换开关、第六低噪声放大器、第二功率放大器以及第八滤波器，其中：所述第八滤波器，耦接在所述第四切换开关与所述第二天线之间，适于对所述远端第二信号进行滤波处理；所述第四切换开关，其定端与所述第八滤波器耦接，其第一动端与所述第六低噪声放大器的输入端耦接，其第二动端与所述第二功率放大器的输出端耦接；所述第六低噪声放大器，其输出端与所述远端发射通道的输入端耦接；所述第二功率放大器，其输入端与所述远端发射通道的输出端耦接。
本发明实施例还提供了一种室内分布系统，包括上述所述的任一种近端合路单元以及上述所述的任一种远端合路单元，所述近端合路单元与所述远端合路单元通过线缆连接。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
通过近端第一信号与近端第二信号，对多路近端第二信号通路中的混频器输入的参考信号进行频偏校准；通过远端第一信号与远端第二信号，对多路远端第二信号通路中的混频器输入的参考信号进行频偏校准。近端第一信号与远端第一信号的频率相同，近端第二信号的频率与远端第二信号的频率相同，因此，对参考信号进行频偏校准的校准方向相同，从而可以减少远端合路单元搬移后的频率与原信号的频率之间的偏差。
图1是本发明实施例中的一种近端合路单元的结构示意图；
图2是本发明实施例中的一种远端合路单元的结构示意图。
如上所述，现有技术中，由于近端合路单元与远端合路单元通常摆放在不同位置，因此，二者无法使用同一参考本振，导致远端合路单元搬移后的频率与原频率存在较大的偏差，进而导致室内分布系统无法正常工作。
在本发明实施例中，通过近端第一信号与近端第二信号，对多路近端第二信号通路中的混频器输入的参考信号进行频偏校准；通过远端第一信号与远端第二信号，对多路远端第二信号通路中的混频器输入的参考信号进行频偏校准。近端第一信号与远端第一信号的频率相同，近端第二信号的频率与远端第二信号的频率相同，因此，对参考信号进行频偏校准的校准方向相同，从而可以减少远端合路单元搬移 后的频率与原信号的频率之间的偏差。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
本发明实施例提供了一种近端合路单元，参照图1，给出了本发明实施例中的一种近端合路单元的结构示意图。
在具体实施中，近端合路单元包括：一路近端第一信号通路、多路近端第二信号通路、第一通信监控模块以及合路器。
在具体实施中，近端合路单元可以包括一路近端第一信号通路，近端第一信号通路的输入端与第一信源耦接，近端第一信号通路的输出端输出近端第一信号。
在本发明实施例中，近端第一信号可以为第一信源输出的信号。第一信源可以为2G信号源，也可以为3G、4G等其他网络通信模式的信号源。
在具体实施中，近端合路单元可以包括多路近端第二信号通路，每一路近端第二信号通路分别与第二信源耦接，将第二信源输出的近端第二信号的频率分别移频至不同的频点，形成多路近端第三信号。
例如，近端合路单元包括两路近端第二信号通路，第一路近端第二信号通路将第二信源输出的近端第二信号的频率移频至F1，第二路近端第二信号通路将第二信源输出的近端第二信号的频率移频至F2，F1对应的频率与F2对应的频率不等。
在本发明实施例中，第二信源可以为5G信号源，也可以为其他网络通信模式的信号源，例如5G的后续演进。
需要说明的是，第二信源与第一信源分别属于不同的网络通信模式。在本发明一实施例中，第二信源为5G信号源，第一信源为2G信号源、3G信号源、4G信号源中的任一种或多种。
在具体实施中，第一信源与第二信源实质上是指室内分布系统所 接收到的信号源。若第二信源为5G信号源，则意味着第二信源可以为室内分布系统接收到的5G信号。相应地，若第一信源为4G信号源，则意味着第一信源可以为室内分布系统接收到的4G信号。
在具体实施中，第一通信监控模块，分别与任一第二信源通道、近端第一信号通路和多路近端第二信号通路耦接。第一通信监控模块可以根据近端第一信号与近端第二信号，对多路近端第二信号通路中的混频器输入的参考信号Ref进行频偏校准。第一通信监控模块还可以通过预设频率的监控信号通路输出近端第四信号，通过近端第四信号获取远端上传的远端监控参数信息；测量近端第一信号与近端第二信号的信号参数信息，基于近端第一信号的信号参数信息、近端第二信号的信号参数信息以及远端监控参数信息，控制多路近端第二信号通路的通断，并通过近端第四信号传输近端信号参数信息，近端信号参数信息包括：测量得到的近端第一信号的信号参数信息以及近端第二信号的信号参数信息。
在本发明实施例中，第一通信监控模块中可以设置有晶振XO，通过晶振XO提供参考信号Ref。
在本发明实施例中，第二信源通道可以包括一路近端第二信号通路以及与该路近端第二信号通路对应的增益调节增益调节器(ATT)。
在具体实施中，近端合路单元还可以包括第一耦合器U1以及第二耦合器U2，其中：第一耦合器U1可以设置在近端第一信号通路上，适于将近端第一信号耦合至第一通信监控模块；第二耦合器U2可以设置在与第一通信监控模块耦接的第二信源通道上，适于将近端第二信号耦合至第一通信监控模块。
通过设置第一耦合器U1以及第二耦合器U2，将近端第一信号与近端第二信号耦合至第一通信监控模块，从而使得第一通信监控模块能够获取近端第一信号与近端第二信号的频率，进而使得第一通信监控模块根据近端第一信号与近端第二信号的频率差值，对混频器输入的参考信号Ref的频率进行校准。此外，第一通信监控模块可以测 量近端第一信号的信号参数信息以及近端第二信号的信号参数信息，并将所测量得到的近端第一信号的信号参数信息以及近端第二信号的信号参数信息作为近端信号参数信息。
在本发明实施例中，近端信号参数信息可以包括近端第一信号和多个近端第二信号的时序配比信息、帧头位置信息和相关的功率参数信息等其中至少之一。
在具体实施中，对于多路近端第二信号通路，其对应的结构可以相同。
在本发明实施例中，对于任一近端第二信号通路，可以包括第一射频前端模块、近端发射通道、近端接收通道以及第一切换开关S1，其中：
第一射频前端模块，其第一信号端可以输入近端第二信号，其第二信号端可以与近端发射通道的输入端耦接，其第三信号端可以与近端接收通道的输出端耦接，其控制信号输入端可以输入第一通信监控模块输出的第二控制信号，第二控制信号可以适于控制近端发射通道与近端接收通道的通断；
近端发射通道的输出端可以与第一切换开关S1的第一动端耦接；
近端接收通道的输入端可以与第一切换开关S1的第二动端耦接；
第一切换开关S1，其定端可以与合路器耦接，其控制端可以输入第一通信监控模块输出的第一控制信号；在第一控制信号的控制下，第一切换开关S1可以选择与近端发射通道的输出端耦接，也即使得近端发射通道导通，实现近端发射功能；或者，在第一控制信号的控制下，第一切换开关S1选择与近端接收通道的输入端耦接，也即使得近端接收通道导通，实现近端接收功能。
在具体实施中，近端发射通道可以包括：第一混频器M1、第一 低噪声放大器L1以及第一滤波器FL1，其中：
第一混频器M1，其第一输入端与第一射频前端模块的第二信号端耦接，其第二输入端输入参考信号Ref；
第一滤波器FL1，其输入端与第一混频器M1的输出端耦接，其输出端与第一切换开关S1的第一端耦接。
在本发明实施例中，参考信号Ref对应的频率可以为26MHz。在具体应用中，参考信号Ref的频率也可以为其他数值，可以并不仅限于上述示例。
在具体实施中，近端接收通道可以包括：第二混频器M2、第二低噪声放大器L2以及第三滤波器FL3，其中：
第二低噪声放大器L2，其输入端可以与第一切换开关S1的第二动端耦接；
第二滤波器FL2，其输入端可以与第二低噪声放大器L2的输出端耦接；
第二混频器M2，其第一输入端可以与第二滤波器FL2的输出端耦接，其第二输入端可以输入参考信号Ref；
第三滤波器FL3，其输入端可以与第二混频器M2的输出端耦接，其输出端可以与第一射频前端模块的第三信号端耦接。
在具体实施中，第一射频前端模块可以包括：第二切换开关S2、第三低噪声放大器L3、第一功率放大器P1以及第四滤波器FL4，其中：
第四滤波器FL4，其输入端可以输入近端第二信号；
第二切换开关S2，其定端可以与第四滤波器FL4的输出端耦接，其第一动端可以与第三低噪声放大器L3的输入端耦接，其第二动端可以与第一功率放大器P1的输出端耦接；
第三低噪声放大器L3，其输出可以端与近端发射通道的输入端耦接；
所述第一功率放大器P1，其输入端可以与近端接收通道的输出端耦接。
在具体实施中，低噪声放大器所起的作用可以为：对其输入的信号进行信号放大，并减少噪声的引入。滤波器所起的作用可以为：对其输入的信号进行滤波处理。
在本发明实施例中，可以通过近端第二信号通路中的混频器实现频率迁移。例如，近端合路单元包括两路近端第二信号通路，第一路近端第二信号通路中VCO的本振频率为LO1，第二路近端第二信号通路中VCO的本振频率为LO2，则F1＝F0-LO1，F2＝F0-LO2，且LO1≠LO2，F0为第二信源输出的近端第二信号的频率。
在本发明实施例中，近端第二信号通路中的混频器可以同时包括压控振荡器(VCO)以及混频单元(Mixer)。
在本发明实施例中，对近端第二信号的频率进行频率迁移后，得到对应的近端第三信号，且近端第三信号所处的频点位于近端第一信号对应支持的频段范围之内。
例如，近端第一信号为4G网络信号，第一路近端第三信号的频点F1与第二路近端第三信号的频点F2均位于4G网络所支持的频段范围之内。
在具体实施中，第一通信监控模块可以根据近端信号参数信息以及远端监控参数信息，控制多路近端第二信号通路中第一切换开关S1、第二切换开关S2的开关时序，使得每一路近端第二信号通路以及每一路近端第二信号通路中的近端发射通道与近端接收通道可以有序开启，从而实现传输不同信源的信号，以及实现在同一信号通路上下行数据的有序传输。
在本发明实施例中，第一通信监控模块可以基于多个近端第二信 号的时序配比信息，依照时序向相应近端第二信号通路发送控制信号，以控制相应的近端第二信号通路的有序通断。
例如，在t1时隙控制所有近端第二信号通路的开关均断开，此时，合路器传输的近端第五信号承载的是来自近端第一信号通路的数据；在t2时隙控制频率在F1频点的近端第二信号通路的下行数据，则控制相应的近端第二信号通路的第一切换开关S1以及第一射频前端模块均连通近端发射通道，此时，合路器传输的近端第五信号承载的是频点为F1的近端第二信号通路的下行数据；在t3时隙控制频率在F1频点的近端第二信号通路的上行数据，则控制相应的近端第二信号通路的第一切换开关S1与第一射频前端模块均连通近端接收通道，此时，合路器传输的近端第五信号承载的是频点为F1的近端第二信号通路的上行数据；在t4时隙控制频率在F2频点的近端第二信号通路的下行数据，则控制相应的近端第二信号通路的第一切换开关S1以及第一射频前端模块均连通近端发射通道，此时，合路器传输的近端第五信号承载的是频点为F2的近端第二信号通路的下行数据；在t5时隙控制频率在F2频点的近端第二信号通路的上行数据，则控制相应的近端第二信号通路的第一切换开关S1与第一射频前端模块均连通近端接收通道，此时，合路器传输的近端第五信号承载的是频点为F2的近端第二信号通路的上行数据。
结合图1，针对F1频点的近端第二信号通路：
在t2时隙，第一通信监控模块向第一切换开关S1输出第一控制信号，控制第一切换开关S1的定端与第一动端连接；第一通信监控模块向第一射频前端模块中的第二切换发送第二控制信号，控制第二切换开关S2的定端与其第一动端连接。
在t3时隙，第一通信监控模块向第一切换开关S1输出第一控制信号，控制第一切换开关S1的定端与第二动端连接；第一通信监控模块向第一射频前端模块中的第二切换发送第二控制信号，控制第二切换开关S2的定端与其第二动端连接。
结合图1，针对F2频点的近端第二信号通路：
在t4时隙，第一通信监控模块向第一切换开关S1输出第一控制信号，控制第一切换开关S1的定端与第一动端连接；第一通信监控模块向第一射频前端模块中的第二切换发送第二控制信号，控制第二切换开关S2的定端与其第一动端连接。
在t5时隙，第一通信监控模块向第一切换开关S1输出第一控制信号，控制第一切换开关S1的定端与第二动端连接；第一通信监控模块向第一射频前端模块中的第二切换发送第二控制信号，控制第二切换开关S2的定端与其第二动端连接。
在具体实施中，第一通信监控模块还可以将测量得到的近端信号参数信息通过近端第四信号输出至合路器，合路器通过线缆与远端合路单元耦接，从而将近端信号参数信息输出至远端合路单元。
在本发明实施例中，线缆可以为无源分布线缆。通过无源分布线缆，实现将5G信号与其他网络模式信号在同一条无源分布线缆中传输。
本发明实施例还提供了一种远端合路单元，参照图2，给出了本发明实施例中的一种远端合路单元。
在具体实施中，远端合路单元包括：功分器、一路远端第一信号通路、多路远端第二信号通路以及第二通信监控模块，其中：
功分器可以传输远端第五信号，并将远端第五信号分频，得到一路远端第一信号、多路远端第三信号以及远端第四信号。功分器可以通过单通道线缆接收远端第五信号。
在本发明一实施例中，两路近端第二信号通路上的近端第三信号对应的频率分别为F1与F2，相应地，两路远端第二信号通路上的远端第三信号对应的频率也分别为F1与F2。
远端第一信号通路为单通道，适于将远端第一信号传输至第一天 线。
多路远端第二信号通路，适于将不同频点的远端第三信号移频至固定频点的远端第二信号，并将远端第二信号传输至对应的第二天线。
第二通信监控模块，适于根据远端第一信号与远端第二信号，对多路远端第二信号通路中的混频器输入的参考信号Ref进行频偏校准；通过远端第四信号获取近端信号参数信息；测量得到远端第一信号与远端第二信号的信号参数信息，作为远端监控参数信息，并通过远端第四信号传输至功分器；基于远端监控参数信息以及近端信号参数信息，控制多路远端第二信号通路的通断。
在本发明实施例中，远端第一信号可以为2G/3G/4G信号，远端第二信号可以为5G信号。远端第一信号与远端第二信号隶属于不同的网络通信模式。
在本发明实施例中，远端第一信号可以与上述的近端第一信号对应，其对应的均可以为2G/3G/4G信号。远端第二信号可以与上述的近端第二信号对应，其对应的均可以为5G信号。
在具体实施中，第二通信监控模块中可以设置有晶振XO，通过晶振XO提供参考信号Ref。在本发明实施例中，第二通信监控模块中的晶振XO的振荡频率，可以与上述实施例中的第一通信监控模块中的晶振XO的振荡频率相等。
在本发明一实施例中，第一通信监控模块中的晶振XO的振荡频率为26MHz，第二通信监控模块中的晶振XO的振荡频率也为26MHz。
在具体实施中，远端合路单元还可以包括第三耦合器U3以及第四耦合器U4，其中：
第三耦合器U3可以设置在远端第一信号通路上，适于将远端第一信号耦合至第二通信监控模块；
第四耦合器U4可以设置在远端第二信号通路上，适于将远端第二信号耦合至第二通信监控模块。
在本发明实施例中，通过设置第三耦合器U3与第四耦合器U4，将远端第一信号与远端第二信号耦合至第二通信监控模块，从而使得第二通信监控模块能够获取远端第一信号与远端第二信号的频率，进而使得第二通信监控模块根据远端第一信号与远端第二信号的频率差值，对混频器输入的参考信号Ref的频率进行校准。此外，第二通信监控模块可以测量远端第一信号的信号参数信息以及远端第二信号的信号参数信息，并将所测量得到的远端第一信号的信号参数信息以及远端第二信号的信号参数信息作为远端监控参数信息。
在具体实施中，对于多路远端第二信号通路，其对应的结构可以相同。
在本发明实施例中，对于任一远端第二信号通路，可以包括：第二射频前端模块、远端发射通道、远端接收通道以及第三切换开关S3，其中：
第二射频前端模块的第一信号端与对应的第二天线耦接，第二射频前端模块的第二信号端与远端发射通道的输入端耦接，第二射频前端模块的第三信号端与远端接收通道的输出端耦接，第二射频前端模块的控制信号端输入第二通信监控模块输出的第三控制信号；第三控制信号适于控制远端发射通道与远端接收通道的通断；
远端发射通道的输出端与第二切换开关S2的第一动端耦接；
远端接收通道的输入端与第二切换开关S2的第二动端耦接；
第三切换开关S3的定端与功分器耦接，第三切换开关S3的控制端输入第二通信监控模块输出的第四控制信号，第四控制信号适于控制选择远端发射通道或远端接收通道。
在具体实施中，远端发射通道可以包括：第三混频器M3、第四低噪声放大器L4以及第五滤波器FL5，其中：
第三混频器M3的第一输入端与第二射频前端模块的第二信号端耦接，第三混频器M3的第二输入端输入参考信号Ref；
第五滤波器FL5的输入端与第三混频器M3的输出端耦接；
第四低噪声放大器L4的输入端与第五滤波器FL5的输出端耦接，第四低噪声放大器L4的输出端与第三切换开关S3的第一动端耦接。
在具体实施中，远端接收通道可以包括：第四混频器M4、第五低噪声放大器L5以及第六滤波器FL6、第七滤波器FL7，其中：
第五低噪声放大器L5的输入端与第三切换开关S3的第二动端耦接；
第六滤波器FL6的输入端与第五低噪声放大器L5的输出端耦接；
第四混频器M4的第一输入端与第六滤波器FL6的输出端耦接，第四混频器M4的第二输入端输入参考信号Ref；
第七滤波器FL7的输入端与第四混频器M4的输出端耦接，第七滤波器FL7的输出端与第二射频前端模块的第三信号端耦接。
在具体实施中，二射频前端模块包括：第四切换开关S4、第六低噪声放大器L6、第二功率放大器P2以及第八滤波器FL8，其中：
第八滤波器FL8可以耦接在第四切换开关S4与第二天线之间，适于对远端第二信号进行滤波处理；
第四切换开关S4的定端与第八滤波器FL8耦接，第四切换开关S4的第一动端与第六低噪声放大器L6的输入端耦接，第四切换开关S4的第二动端与第二功率放大器P2的输出端耦接；
第六低噪声放大器L6的输出端与远端发射通道的输入端耦接；
第二功率放大器P2的输入端与远端发射通道的输出端耦接。
在本发明实施例中，可以通过远端第二信号通路中的混频器实现频率迁移。例如，远端第二信号通路包括两路远端第二信号通路，第一路远端第二信号通路中VCO的本振频率为LO1’，第二路远端第二信号通路中VCO的本振频率为LO2’，则F0＝F1+LO1’，F0＝F1+LO2’。F0为第二信源输出的近端第二信号的频率。由于远端合路单元与近端合路单元同步在同一小区，参考相同的频率基准，因此调整后的LO1＝LO1’，LO2＝LO2’。
在本发明实施例中，远端第三信号的频率处于远端第一信号对应支持的频段范围之内，远端第二信号的频率处于远端第一信号对应支持的频段范围之外。
例如，远端第一信号为4G网络信号，远端第三信号的频点F1的频率处于4G网络所支持的频段范围之内。远端第二信号为5G网络信号。
在本发明实施例中，远端第二信号通路中的混频器可以同时包括压控振荡器(VCO)以及混频单元(Mixer)。
在具体实施中，第二通信监控模块可以根据远端监控参数信息以及近端信号参数信息，控制多路远端第二信号中第三切换开关S3、第四切换开关S4的开关时序，使得每一路远端第二信号通路以及每一路远端第二信号通路中的远端发射通道与远端接收通道可以有序开启，从而实现同一信号通路上下行数据的有序传输。
在本发明实施例中，近端第一信号的频率可以与远端第一信号的频率相等，近端第二信号的频率可以与远端第二信号的频率相等。
在具体实施中，图2中所示的远端合路单元中存在2个第二天线，对应于两根接收天线与两根发射天线。远端合路单元中存在的第二天线数也可以为3个、4个或者更多个，对应于相应数目的接收天线与发射天线。本发明实施例并不对第二天线的个数做限制。
在本发明实施例中，第一信号在近端称之为近端第一信号，第一 信号在远端称之为远端第一信号；第二信号在近端称之为近端第二信号，第二信号在远端称之为远端第二信号。以此类推，第三信号、第四信号与第五信号可以采用相同的描述方式。除去线损以及一些干扰外，近端和远端的相应信号并无本质的不同。
在本发明实施例中，若第二耦合器U2设置在频率为F2的近端第二信号通路上，则第四耦合器U4可以对应设置在频率为F2的远端第二信号通路上。相应地，若第一耦合器U1设置在频率为F1的近端第二信号通路上，则第三耦合器U3可以对应设置在频率为F2的远端第二信号通路上。
在具体实施中，近端合路单元与远端合路单元可以相对应，近端合路单元与远端合路单元组成室内分布系统。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因此本发明的保护范围应当以权利要求所限定的范围为准。
Claims (13)
- 一种近端合路单元，其特征在于，包括：一路近端第一信号通路、多路近端第二信号通路、第一通信监控模块以及合路器，其中：所述一路近端第一信号通路，与第一信源耦接，输出近端第一信号；所述多路近端第二信号通路，每一路近端第二信号通路分别与第二信源耦接，将所述第二信源输出的近端第二信号的频率分别移频至不同频点，形成多路近端第三信号；所述第一通信监控模块，分别与任一第二信源通道、所述近端第一信号通路以及所述多路近端第二信号通路耦接，适于根据所述近端第一信号与所述近端第二信号，对所述多路近端第二信号通路中的混频器输入的参考信号进行频偏校准，并通过预设频率的监控信号通路输出近端第四信号；测量所述近端第一信号与所述近端第二信号的信号参数信息，作为近端信号参数信息；通过所述近端第四信号获取远端上传的远端监控参数信息；基于所述近端信号参数信息、所述远端监控参数信息，控制所述多路近端第二信号通路的通断，并通过所述近端第四信号传输所述近端信号参数信息；所述合路器，适于将所述近端第一信号、所述多路近端第三信号、所述近端第四信号合并成近端第五信号并输出；所述第一信源与所述第二信源对应不同的网络通信模式。
- 如权利要求1所述的近端合路单元，其特征在于，所述近端合路单元还包括：第一耦合器，设置于所述近端第一信号通路上，适于将所述近端第一信号耦合至所述第一通信监控模块；第二耦合器，设置于任一近端第二信号通路上，适于将所述近端第二信号耦合至所述第一通信监控模块。
- 如权利要求1所述的近端合路单元，其特征在于，所述近端第二 信号通路包括：第一射频前端模块、近端发射通道、近端接收通道以及第一切换开关；所述第一射频前端模块，其第一信号端输入所述近端第二信号，其第二信号端与所述近端发射通道的输入端耦接，其第三信号端与所述近端接收通道的输出端耦接，其控制信号输入端输入所述第一通信监控模块输出的第二控制信号；所述第二控制信号适于控制所述近端发射通道与所述近端接收通道的通断；所述近端发射通道，其输出端与所述第一切换开关的第一动端耦接；所述近端接收通道，其输入端与所述第一切换开关的第二动端耦接；所述第一切换开关，其定端与所述合路器耦接，其控制端输入所述第一通信监控模块输出的第一控制信号，所述第一控制信号适于控制选择所述近端发射通道或所述近端接收通道。
- 如权利要求3所述的近端合路单元，其特征在于，所述近端发射通道包括：第一混频器、第一低噪声放大器以及第一滤波器，其中：所述第一混频器，其第一输入端与所述第一射频前端模块的第二信号端耦接，其第二输入端输入所述参考信号；所述第一滤波器，其输入端与所述第一混频器的输出端耦接；所述第一低噪声放大器，其输入端与所述第一滤波器的输出端耦接，其输出端与所述第一切换开关的第一动端耦接。
- 如权利要求3所述的近端合路单元，其特征在于，所述近端接收通道包括：第二混频器、第二低噪声放大器、第二滤波器以及第三滤波器，其中：所述第二低噪声放大器，其输入端与所述第一切换开关的第二动端耦接；所述第二滤波器，其输入端与所述第二低噪声放大器的输出端耦接；所述第二混频器，其第一输入端与所述第二滤波器的输出端耦接，其第二输入端输入所述参考信号；所述第三滤波器，其输入端与所述第二混频器的输出端耦接，其输出端与所述第一射频前端模块的第三信号端耦接。
- 如权利要求3所述的近端合路单元，其特征在于，所述第一射频前端模块包括：第二切换开关、第三低噪声放大器、第一功率放大器以及第四滤波器，其中：所述第四滤波器，耦接在所述第二切换开关与所述第二信源之间，适于对所述近端第二信号进行滤波处理；所述第二切换开关，其定端与所述第四滤波器耦接，其第一动端与所述第三低噪声放大器的输入端耦接，其第二动端与所述第一功率放大器的输出端耦接；所述第三低噪声放大器，其输出端与所述近端发射通道的输入端耦接；所述第一功率放大器，其输入端与所述近端接收通道的输出端耦接。
- 一种远端合路单元，其特征在于，包括：功分器、一路远端第一信号通路、多路远端第二信号通路以及第二通信监控模块，其中：所述功分器，传输远端第五信号，并将所述远端第五信号分频，得到一路远端第一信号、多路远端第三信号以及远端第四信号；所述一路远端第一信号通路，适于将所述远端第一信号传输至第一天线；所述多路远端第二信号通路，适于将不同频点的远端第三信号移频至固定频点的远端第二信号，并将所述远端第二信号传输至对应的第二天线；所述第二通信监控模块，适于根据所述远端第一信号与所述远端第二信号，对所述多路远端第二信号通路中的混频器输入的参考信号进行 频偏校准；通过所述远端第四信号获取近端信号参数信息；测量得到所述远端第一信号与所述远端第二信号的信号参数信息，作为远端监控参数信息，并通过所述远端第四信号传输至所述功分器；基于所述远端监控参数信息以及所述近端信号参数信息，控制所述多路远端第二信号通路的通断。
- 如权利要求7所述的远端合路单元，其特征在于，所述远端合路单元还包括：第三耦合器，设置于所述远端第一信号通路上，适于将所述远端第一信号耦合至所述第二通信监控模块；第四耦合器，设置于任一所述远端第二信号通路上，适于将所述远端第二信号耦合至所述第二通信监控模块。
- 如权利要求7所述的远端合路单元，其特征在于，所述远端第二信号通路包括：第二射频前端模块、远端发射通道、远端接收通道以及第三切换开关，其中：所述第二射频前端模块，其第一信号端与对应的第二天线耦接，其第二信号端与所述远端发射通道的输入端耦接，其第三信号端与所述远端接收通道的输出端耦接，其控制信号端输入所述第二通信监控模块输出的第三控制信号；所述第三控制信号适于控制所述远端发射通道与所述远端接收通道的通断；所述远端发射通道，其输出端与所述第二切换开关的第一动端耦接；所述远端接收通道，其输入端与所述第二切换开关的第二动端耦接；所述第三切换开关，其定端与所述功分器耦接，其控制端输入所述第二通信监控模块输出的第四控制信号，所述第四控制信号适于控制选择所述远端发射通道或所述远端接收通道。
- 如权利要求9所述的远端合路单元，其特征在于，所述远端发射通道包括：第三混频器、第四低噪声放大器以及第五滤波器，其中：所述第三混频器，其第一输入端与所述第二射频前端模块的第二信号端耦接，其第二输入端输入所述参考信号；所述第五滤波器，其输入端与所述第三混频器的输出端耦接；所述第四低噪声放大器，其输入端与所述第五滤波器的输出端耦接，其输出端与所述第三切换开关的第一动端耦接。
- 如权利要求9所述的远端合路单元，其特征在于，所述远端接收通道包括：第四混频器、第五低噪声放大器以及第六滤波器、第七滤波器，其中：所述第五低噪声放大器，其输入端与所述第三切换开关的第二动端耦接；所述第六滤波器，其输入端与所述第五低噪声放大器的输出端耦接；所述第四混频器，其第一输入端与所述第六滤波器的输出端耦接，其第二输入端输入所述参考信号；所述第七滤波器，其输入端与所述第四混频器的输出端耦接，其输出端与所述第二射频前端模块的第三信号端耦接。
- 如权利要求9所述的远端合路单元，其特征在于，所述第二射频前端模块包括：第四切换开关、第六低噪声放大器、第二功率放大器以及第八滤波器，其中：所述第八滤波器，耦接在所述第四切换开关与所述第二天线之间，适于对所述远端第二信号进行滤波处理；所述第四切换开关，其定端与所述第八滤波器耦接，其第一动端与所述第六低噪声放大器的输入端耦接，其第二动端与所述第二功率放大器的输出端耦接；所述第六低噪声放大器，其输出端与所述远端发射通道的输入端耦接；所述第二功率放大器，其输入端与所述远端发射通道的输出端耦接。
- 一种室内分布系统，其特征在于，包括：如权利要求1～6任一项所述的近端合路单元，以及如权利要求7～12任一项所述的远端合路单元，其中：所述近端合路单元与所述远端合路单元通过线缆连接。
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| CN111770506A (zh) * | 2020-07-08 | 2020-10-13 | 展讯通信（上海）有限公司 | 近端及远端控制合路单元、近端及远端子系统和室分系统 |
| CN111770505A (zh) * | 2020-07-08 | 2020-10-13 | 展讯通信（上海）有限公司 | 通信控制单元、近端连接模块、远端覆盖模块及室分系统 |
| CN113206682A (zh) * | 2021-04-29 | 2021-08-03 | 展讯通信（上海）有限公司 | 近端合路单元、远端合路单元及室内分布系统 |
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| CN113206682A (zh) | 2021-08-03 |
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