CN103916169B - LTE MIMO indoor optical fiber distribution system wireless signal monitoring device and method - Google Patents
LTE MIMO indoor optical fiber distribution system wireless signal monitoring device and method Download PDFInfo
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- CN103916169B CN103916169B CN201410043757.9A CN201410043757A CN103916169B CN 103916169 B CN103916169 B CN 103916169B CN 201410043757 A CN201410043757 A CN 201410043757A CN 103916169 B CN103916169 B CN 103916169B
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Abstract
The present invention discloses a kind of LTE MIMO indoor optical fiber distribution systems wireless signal monitoring device and method, and monitoring device includes：Slave monitor portion, its communication ends are connected with the integrated optical transceiver of distal end slave, and the signal detection for receiving the transmission of near-end main frame is instructed and uploads monitoring result signals to the near-end main frame；The dual polarized antenna connection of the output of its radio frequency, rf inputs and LTE MIMO indoor optical fiber distribution systems, for exporting the terminal feedback signal that RF test signal and input dual polarized antenna are received；Its control output end power amplifier low noise amplification module connection integrated with distal end slave, for exporting the radio frequency output control signal to distal end slave；Also include that wireless signal RFID detects terminal, with dual polarized antenna communication, the dual polarized antenna is fed back signal to for receiving RF test signal, and feeding back the terminal comprising the terminal identity information.The present invention can in time have found network blind spot, optimize interior LTE wireless network signals.
Description
Technical field
The present invention relates to Information ＆ Communication Technology field, and in particular to one kind is directed to LTE MIMO indoor optical fiber distribution systems
Wireless signal monitoring device and method.
Background technology
With the increasingly increase of mobile data services demand, domestic major operation commercial cities have had begun to the business of LTE network
With construction, in-door covering networking is the most important thing of 4G networks second phase planning.MIMO technology is one of 4G core technologies,
Network rate and quality aspect are improved, it plays key player.The newly-built indoor covering systems of 4G typically use double-fed line MIMO
System.LTE MIMO indoor optical fiber distribution systems, amplify to LTE indoor distributions network signal, transmit and control, reduction construction hardly possible
Degree, lowers interior and arranges net cost, improves message transmission rate, improves communication quality and plays important role.
As shown in figure 1, LTE MIMO indoor optical fiber distribution systems include：LTE MIMO near-ends main frame, LTE MIMO distal ends
Slave, composite fiber optical cable and dual polarized antenna.The downlink transfer link of LTE MIMO indoor optical fiber distribution systems is：Believe base station
Number 1 and base station signal 2, LTE MIMO near-end main frames are coupled to by feeder line, by multiple after LTE MIMO near-end host process
Close optical fiber cable and be sent to LTE MIMO distal ends slave, after LTE MIMO distal end slaves are to its information processing, then by dual polarization
Antenna carries out indoor coverage of signal；Its up-link is：Dual polarized antenna receives the wireless communication that nearby terminal device sends
After breath, LTE MIMO distal ends slave is transferred to, treatment conversion is carried out to signal through LTE MIMO distal end slaves, then by complex light
To LTE MIMO near-end main frames, LTE MIMO near-ends main frames enter at line translation fine optical cable transmission to the signal that remote termination is sended over
Reason, base station is sent to by feeder line.
As shown in Fig. 2 being the multichannel networking diagram of LTE MIMO indoor optical fiber distribution systems.The LTE MIMO rooms of multichannel networking
Inner fiber compartment system includes：LTE MIMO near-ends main frame, composite fiber optical cable, LTEMIMO optical branching devices, multiple LTE MIMO
Distal end slave, multiple dual polarized antennas and transmission feeder.In the distribution multichannel networking of LTEMIMO indoor optical-fibres, by LTE MIMO
Optical branching device, the remote equipment to LTE MIMO carries out multichannel distribution, networking, thereon the LTE of downlink transmission mode and Fig. 1
MIMO indoor optical fiber distribution systems are roughly the same.
As shown in figure 3, LTE MIMO near-end main frames include：Duplexer, integrated up-downgoing frequency-variable module, radiofrequency signal are closed
Road device, integrated radio-frequency traffic filter, integrated optical transceiver, host device monitor portion, host device power supply power supply
It is grouped into.The downstream signal of LTE MIMO near-end main frames processes link：Base station signal 1 is coupled with base station signal 2 by feeder line,
Each self-corresponding duplexer is respectively enterd, by integrated up-downgoing frequency-variable module, after radiofrequency signal is down-converted into 1300MHz
With base station signal 2 by radio frequency combiner combining, through integrated radio-frequency traffic filter filtering process after, received by integrated optical
Hair device carries out light-to-current inversion, and by the light carrier of rf-signal modulation to 1550nm, the optical carrier after modulation is by compound
Optical fiber cable is sent to LTE MIMO distal ends slave；The upward signal of LTE MIMO near-end main frames processes link：Integrated optical
Transceiver receives LTE MIMO distal end slaves by after the optical signal that optical fiber sends, light-to-current inversion being carried out to it, through one
After body radio-frequency signal filters filtering process, two-way radiofrequency signal is isolated by radio frequency signal combiner, wherein passing through all the way
Integrated up-downgoing frequency-variable module carries out upconverting to LTE communication frequency range, and now two-way radiofrequency signal is respectively by corresponding double
Work device, then base station is transported to by feeder line.
As shown in figure 4, LTE MIMO distal ends slave includes：Integrated optical transceiver, integrated radio-frequency traffic filter, penetrate
Frequency signal combiner, integrated up-downgoing frequency-variable module, integrated power amplifier low noise amplification module, duplexer, slave devices monitoring unit
Divide, slave devices power supply power pack is constituted.The downstream signal of LTE MIMO distal ends slave processes link：Integrated optical is received and dispatched
Device passes through light-to-current inversion after receiving the signal that LTE MIMO near-end main frames send, and is filtered through integrated radio-frequency traffic filter
Treatment, the radiofrequency signal after treatment isolates two-way radiofrequency signal through radio frequency signal combiner, wherein radiofrequency signal passes through all the way
Integrated Up/Down Conversion module, upconverts to LTE communication frequency range, now two-way radiofrequency signal, then pass through respectively by radiofrequency signal
Each self-corresponding integrated power amplifier low noise amplification module carries out radio-frequency power amplification to it, and the radiofrequency signal after amplification is respectively by each
Self-corresponding duplexer launches radiofrequency signal by dual polarized antenna；The upward signal treatment of LTE MIMO distal ends slave
Link is：After dual polarized antenna receives the radiofrequency signal that nearby terminal device is sended over, respectively by each self-corresponding double
Work device, integrated power amplifier LNA carry out low noise power amplification to upward signal, wherein radiofrequency signal is through one after amplifying all the way
Body Up/Down Conversion module, is down-converted to 1400MHz, and two-way radiofrequency signal now enters one by the combining of radio frequency combiner
Change radio-frequency signal filters filtering process, the light wave that the radiofrequency signal after treatment passes through integrated optical transceiver modulates 1310nm,
Optical carrier after modulation is sent to LTE MIMO near-end main frames by composite fiber optical cable.
In the work process of LTE MIMO indoor optical fiber distribution systems, because LTE communication frequency range is higher, reach 2GHz with
On, and the building in metropolis is all reinforced concrete structure at present, the decay to high-frequency signal is very large, complicated space
Electromagnetic wave environment, plus human factor, the change fluctuation of LTE indoor signals will be than larger, and this certainly will reduce the public and LTE is believed
The perception of number quality.Therefore, the demand to real-time, the comprehensive intelligent monitoring of indoor LTE signals is also extremely urgent.
The content of the invention
The object of the invention is directed to 4G indoor communications demands, while LTE MIMO indoor optical fiber distribution systems are provided,
A kind of device and method of real time intelligent control wireless signal are provided, are realized to indoor LTE wireless network signal optimizings, reduction is patrolled
Inspection attendance, reduces generation dimension cost, improves communication quality.The object of the invention is realized by following technical scheme：
A kind of LTE MIMO indoor optical fiber distribution systems wireless signal monitoring equipment, it is characterised in that including：
Slave monitor portion, its communication ends are received with the integrated optical of the distal end slave of LTE MIMO indoor optical fiber distribution systems
Hair device connection, the signal detection for receiving the transmission of LTE MIMO indoor optical fiber distribution system near-ends main frame is instructed and uploads monitoring
Consequential signal gives the near-end main frame；The output of its radio frequency, rf inputs and LTE MIMO indoor optical fiber distribution systems it is bipolar
Change antenna connection, for exporting the terminal feedback signal that RF test signal and input dual polarized antenna are received；Its controlled output
End power amplifier low noise amplification module connection integrated with the distal end slave, the radio frequency for exporting to the distal end slave exports control
Signal processed；
At least one wireless signal RFID detects terminal, is communicated with the dual polarized antenna wireless duplex, for receiving
The RF test signal, and terminal of the feedback comprising the terminal identity information feeds back signal to the dual polarized antenna.
Used as specific technical scheme, the slave monitor portion includes：Processing unit, there is provided the institute of slave monitor portion
Communication ends and control output end are stated, drive output and signal acquisition terminal are also provided；RF test signal transmitter module, input connects
Connect the drive output of processing unit, the input of output connection frequency division duplex device side；RF test signal receiver module, it is defeated
Enter the output end of side described in end connection frequency division duplex device, output end connects the input of signal demodulator processing module；Signal is examined
Ripple processing module, output end connects the input of ADC；ADC, output end connects the signal acquisition terminal of processing unit；
Frequency division duplex device, its opposite side is connected with the dual polarized antenna.
Used as specific technical scheme, the wireless signal RFID detections terminal includes：Terminal antenna, for and LTE
The dual polarized antenna communication of MIMO indoor optical fiber distribution systems；Passive filtering device, is connected with terminal antenna；It is constant to amplify electricity
Road, is connected with passive filtering device；RFID transmission circuits, are connected with constant amplifying circuit；Power circuit, for providing work electricity
Source.
Used as further technical scheme, above-mentioned monitoring device also includes center host, with LTE MIMO room lights
Fibre distribution system near-end main frame is connected, and receives the monitoring result signals.
As further technical scheme, the above-mentioned monitoring device also hand-held terminal device including wireless maintenance personnel, with
The center host connection, receives the testing result signal.
A kind of monitoring method based on above-mentioned LTE MIMO indoor optical fiber distribution systems wireless signal monitoring equipment, its feature
It is to comprise the following steps：
（1）Slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, is exported according to instruction
RF test signal, and by dual polarized antenna to the original wireless coverage area spoke for laying wireless signal RFID detection terminals
Penetrate；
（2）Whether slave monitor portion judges receive the end that all wireless signal RFID detect terminal at the appointed time
End feedback signal, is then to enter step（3a）, otherwise into step（3b）；
（3a）Slave monitor portion output control signal, controls the distal end slave progressively to reduce radio frequency by certain amplitude defeated
The power for going out, and determine that distal end slave can be polled to the minimum transmitting work(of all RFID detections terminals in its overlay area
Rate, and control distal end slave to be worked by minimum emissive power；
（3b）Slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and really
Dingyuan end slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminals, and control distal end from
Machine works by minimum emissive power.
Used as further technical scheme, the above method also includes：The wireless signal that slave monitor portion will be received
The monitoring result signals of the terminal feedback signal of RFID detection terminals are sent to the near-end main frame, and near-end main frame will be monitored
Consequential signal is reported to the hand-held terminal device of center host and wireless maintenance personnel.
A kind of monitoring method based on above-mentioned LTE MIMO indoor optical fiber distribution systems wireless signal monitoring equipment, its feature
It is to comprise the following steps：
（1）Slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, is exported according to instruction
RF test signal, and by dual polarized antenna to the original wireless coverage area spoke for laying wireless signal RFID detection terminals
Penetrate；
（2）Whether slave monitor portion judges receive the end that all wireless signal RFID detect terminal at the appointed time
End feedback signal, is then to enter step（3a）, otherwise into step（3b）；
（3a）Slave monitor portion detects the terminal feedback signal of terminal according to each wireless signal RFID, calculates dual polarization day
Line detects the space path loss of terminal radiation process to each wireless signal RFID, and distal end slave is determined according to wherein maximum space path loss
Minimum emissive power, and output control signal controls the distal end slave to be worked by minimum emissive power；
（3b）Slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and really
Dingyuan end slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminal module, and control remote
End slave works by minimum emissive power.
Used as further technical scheme, the above method also includes：The wireless signal that slave monitor portion will be received
The monitoring result signals of the terminal feedback signal of RFID detection terminals are sent to the near-end main frame, and near-end main frame will be monitored
Consequential signal is reported to the hand-held terminal device of center host and wireless maintenance personnel.
The beneficial effects of the present invention are：Detect that terminal module coordinates by slave monitor portion and wireless signal RFID,
Realize, to the detection of LTE indoor distributions network signal, treatment and control, network blind spot being found in time, optimize interior LTE wireless networks
Signal, reduces patrol officer and turns out for work, and reduces generation dimension cost, improves communication quality.
Brief description of the drawings
Fig. 1 is LTE MIMO indoor optical fiber distribution system figures.
Fig. 2 is LTE MIMO indoor optical fiber distribution system multichannel networking diagrams.
Fig. 3 is LTE MIMO indoor optical fiber distribution system near-end main frame theory diagrams.
Fig. 4 is LTE MIMO indoor optical fiber distribution systems distal end slave theory diagram.
Fig. 5 is LTE MIMO indoor optical fiber distribution systems slave devices monitor portion principle frame provided in an embodiment of the present invention
Figure.
Fig. 6 is that LTE MIMO indoor optical fiber distribution system wireless signals RFID provided in an embodiment of the present invention detects terminal mould
Block theory diagram.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The LTE MIMO indoor optical fiber distribution system wireless signal monitorings equipment that the present embodiment is provided includes slave monitoring unit
Divide and wireless signal RFID detection terminals.
With reference to shown in Fig. 4 and Fig. 5, slave supervising device includes：FPGA processing units, ADC, signal demodulator treatment mould
Block, RF test signal transmitter module, RF test signal receiver module and frequency division duplex device.FPGA processing units connect LTE
The integrated optical transceiver of MIMO distal ends slave, the input of RF test signal transmitter module connects the defeated of FPGA processing units
Go out, the input of the side of the output connection frequency division duplex device of RF test signal transmitter module, RF test signal receives mould
The output end of side described in the input connection frequency division duplex device of block, the input connection radio frequency testing of signal demodulator processing module
The output end of signal receiving module, the input of ADC connects the output end of signal demodulator processing module, ADC it is defeated
Go out end connection FPGA processing units, frequency division duplex device opposite side is connected with dual polarized antenna.
The downstream signal of above-mentioned slave monitor portion processes link：FPGA processing units receive LTE MIMO near-end main frames
The signal detection instruction of LTE MIMO distal ends slave is sent to, instruction is processed and is exported and launch mould to RF test signal
Block, RF test signal transmitter module according to dependent instruction export 2.45GHz narrow radio frequency signal, by frequency division duplex device,
Dual polarized antenna is radiated to spatial peripheral；The upward signal of above-mentioned slave monitor portion processes link：Dual polarized antenna is received
Terminal is detected to from the wireless signal RFID（Referring to Fig. 6）After the narrow radio frequency signal of the 2.45GHz for sending over, pass through
Frequency division duplex device enters RF test signal receiver module, through signal demodulator treatment, ADC conversions, FPGA treatment, then by photoelectricity
After modulation, LTE MIMO near-end main frames are sent to.
As shown in fig. 6, wireless signal RFID detections terminal includes：Terminal antenna, passive filtering device, constant amplification electricity
Road, RFID transmission circuits, power circuit.Terminal antenna is used for and the dual polarized antenna of LTE MIMO indoor optical fiber distribution systems leads to
News, passive filtering device connection antenna, constant amplifying circuit is connected with passive filtering device, RFID transmission circuits and constant amplification
Circuit is connected, and power circuit is used to provide working power.
The downstream signal of above-mentioned wireless signal RFID detections terminal processes link and is：Terminal antenna is received from LTE
After the narrow radio frequency signal of the 2.45GHz that the dual polarized antenna of MIMO indoor optical fiber distribution systems is sended over, by passive filter
Wave device filtering, through constant amplifying circuit treatment is amplified to radiofrequency signal again, it is right subsequently into RFID label tag transmission circuit
RFID label tag implements activation action；The upward signal of wireless signal RFID detection terminals processes link and is：When RFID label tag is swashed
The narrow radio frequency signal of the 2.45GHz containing relevant information that auto-returned is activated after work, amplified by constant amplifying circuit,
Filtering process, again by terminal antenna launch, pass back to the dual polarized antenna of LTE MIMO indoor optical fiber distribution systems.
Based on LTE MIMO indoor optical fiber distribution systems wireless signal monitoring equipment provided above, the present embodiment provides one
Monitoring method is planted, is comprised the following steps：
（1）Slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, is exported according to instruction
RF test signal, and by dual polarized antenna to the original wireless coverage area spoke for laying wireless signal RFID detection terminals
Penetrate；
（2）Whether slave monitor portion judges receive the end that all wireless signal RFID detect terminal at the appointed time
End feedback signal, is then to enter step（3a）, otherwise into step（3b）；
（3a）Slave monitor portion output control signal, controls the distal end slave progressively to reduce radio frequency by certain amplitude defeated
The power for going out, and determine that distal end slave can be polled to the minimum transmitting work(of all RFID detections terminals in its overlay area
Rate, and control distal end slave to be worked by minimum emissive power；
（3b）Slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and really
Dingyuan end slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminals, and control distal end from
Machine works by minimum emissive power.
The above method also includes：The wireless signal RFID that slave monitor portion will be received detects the terminal feedback letter of terminal
Number monitoring result signals be sent to the near-end main frame, and monitoring result signals are reported to Surveillance center master by near-end main frame
Machine and the hand-held terminal device of wireless maintenance personnel.
Related algorithm treatment during above-mentioned monitoring is as follows：
LTE MIMO indoor optical fiber distribution systems distal end slave detects terminal by dual polarized antenna to wireless signal RFID
Module launches the narrow radio frequency signal of 2.45GHz.Wherein transmission power PATx（Transmission power PATx, unit：DBm, its value can be real
When read）, space path loss is LS（Unit：dB）, filtering, transmission line, interface loss are L in RFID detection terminalsΔ（Unit：DB,
Once shaping, its value is constant to RFID detection terminal modules）, constant multiplication factor A in RFID detection terminalsD（Unit：DB,
Once shaping, its value is constant to RFID detection terminal modules）, the receiving sensitivity of RFID label tag is PIDRx（Unit：DBm, RFID
After label dispatches from the factory, its value is constant）, the transmission power of RFID label tag is PIDTx（Unit：DBm, after RFID label tag is dispatched from the factory, its value
It is constant）, should meet such as lower inequality when RFID label tag is activated：
PATx-LS-LΔ+AD-PIDRx>0 （1）
Once meet above-mentioned inequality（1）, wireless signal RFID detection terminal module in RFID label tag be activated, activate
The label carries relevant information one same frequency of transmitting automatically afterwards（2.45GHz）Narrow radio frequency signal, the signal is by constant
Amplify, filter, then dual polarized antenna port is transmitted into by antenna（Dual polarized antenna port receiving sensitivity is PARx, unit：
DBm, its value is constant after sizing）, while also to meet such as lower inequality：
PIDTx+AD-LΔ-LS-PARx>0 （2）
Once meet above-mentioned inequality（2）, slave monitor portion receive wireless signal RFID detection terminal module response
After the radio-frequency information returned, RF test signal receiver module is entered by frequency division duplex device, processed through signal demodulator,
ADC conversions, FPGA treatment, parse RFID label tag response return information, then by after electro-optical modulation, being sent to LTE MIMO rooms
Inner fiber compartment system near-end main frame, the handheld terminal of Surveillance center and wireless maintenance personnel is reported to by monitoring application software
In equipment.
Inequality（1）And inequality（2）As long as having one can not meet, then LTE MIMO indoor optical fiber distribution systems slave
Equipment does not receive the RFID label tag response message in wireless signal RFID detection terminal modules within the time of regulation, now
May determine that LTE MIMO indoor optical fiber distribution systems slave devices can not be polled to it and originally be placed in its radio coverage
The RFID detection terminal modules in domain, are that RFID detects that the LTE signal strengths on terminal module position periphery are very faint, it is impossible to
Meet communicating requirement.
Inequality（1）And inequality（2）After satisfaction, i.e. LTE MIMO indoor optical fiber distribution systems slave devices can be fine
Be polled to its overlay area RFID detection terminal module.
Based on LTE MIMO indoor optical fiber distribution systems wireless signal monitoring equipment provided above, the present embodiment provides another
A kind of monitoring method, comprises the following steps：
（1）Slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, is exported according to instruction
RF test signal, and by dual polarized antenna to the original wireless coverage area spoke for laying wireless signal RFID detection terminals
Penetrate；
（2）Whether slave monitor portion judges receive the end that all wireless signal RFID detect terminal at the appointed time
End feedback signal, is then to enter step（3a）, otherwise into step（3b）；
（3a）Slave monitor portion detects the terminal feedback signal of terminal according to each wireless signal RFID, calculates dual polarization day
Line detects the space path loss of terminal radiation process to each wireless signal RFID, and distal end slave is determined according to wherein maximum space path loss
Minimum emissive power, and output control signal controls the distal end slave to be worked by minimum emissive power；
（3b）Slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and really
Dingyuan end slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminal module, and control remote
End slave works by minimum emissive power.
In above-described embodiment, wireless signal RFID detection terminals implement half-duplex operation, i.e. RFID tag to information
Afterwards, automatic-answering back device return information, this detection mode greatly simplifies the volume of terminal, improves the detection performance of terminal.Wireless communication
Number RFID detection terminal volume is smaller, can be integrated in the emergency access direction board on corridor wall Nei, at emergency light, elevator it is wide
Accuse in board, at the illuminating lamp of underground parking etc. monitoring in need place.
The beneficial effects of the present invention are：A. 24 hours real-time monitorings of whole day can be carried out to indoor LTE wireless signals；B.
Comprehensive SS can be carried out to indoor LTE wireless signals；C. system host can be to slave devices reality according to monitoring information
Automatic gain control is applied with control；D. half-duplex RF ID communication checks mode simplifies terminal module volume, improves terminal detection mould
Block performance；E. turned out for work without signal patrol officer, reduce maintenance cost；F., triggering monitoring mode is provided, is implemented timing and is monitored；g.
Can LTE wireless signal coverages in dynamic control room according to detection process information.
Claims (4)
1. a kind of monitoring method based on LTE MIMO indoor optical fiber distribution system wireless signal monitoring equipment, the equipment bag
Include：The integrated optical transceiver of the distal end slave of slave monitor portion, its communication ends and LTE MIMO indoor optical fiber distribution systems
Connection, the signal detection for receiving the transmission of LTE MIMO indoor optical fiber distribution system near-ends main frame is instructed and uploads monitoring result
Signal gives the near-end main frame；The dual polarization day of the output of its radio frequency, rf inputs and LTE MIMO indoor optical fiber distribution systems
Line is connected, for exporting the terminal feedback signal that RF test signal and input dual polarized antenna are received；Its control output end with
The integrated power amplifier low noise amplification module connection of the distal end slave, for exporting the radio frequency output control letter to the distal end slave
Number；At least one wireless signal RFID detects terminal, is communicated with the dual polarized antenna wireless duplex, for receiving described penetrating
Frequency test signal, and terminal of the feedback comprising the terminal identity information feeds back signal to the dual polarized antenna；
Characterized in that, the monitoring method is comprised the following steps：
(1) slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, according to instruction output radio frequency
Test signal, and radiated to the original wireless coverage area for laying wireless signal RFID detection terminals by dual polarized antenna；
(2) slave monitor portion judges that whether the terminal for receiving all wireless signal RFID detections terminals at the appointed time is anti-
Feedback signal, is then to enter step (3a), otherwise into step (3b)；
(3a) slave monitor portion output control signal, controls the distal end slave progressively to reduce radio frequency output by certain amplitude
Power, and determine that distal end slave can be polled to the minimum emissive power that all RFID in its overlay area detect terminal, and
Control distal end slave works by minimum emissive power；
(3b) slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and determines remote
End slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminal, and control distal end slave to press
Minimum emissive power works.
2. a kind of monitoring method based on described in claim 1, it is characterised in that also include：Slave monitor portion will be received
The monitoring result signals of terminal feedback signal of wireless signal RFID detection terminals be sent to the near-end main frame, and near-end
Monitoring result signals are reported to main frame the hand-held terminal device of center host and wireless maintenance personnel.
3. a kind of monitoring method based on LTE MIMO indoor optical fiber distribution system wireless signal monitoring equipment, the equipment bag
Include：The integrated optical transceiver of the distal end slave of slave monitor portion, its communication ends and LTE MIMO indoor optical fiber distribution systems
Connection, the signal detection for receiving the transmission of LTE MIMO indoor optical fiber distribution system near-ends main frame is instructed and uploads monitoring result
Signal gives the near-end main frame；The dual polarization day of the output of its radio frequency, rf inputs and LTE MIMO indoor optical fiber distribution systems
Line is connected, for exporting the terminal feedback signal that RF test signal and input dual polarized antenna are received；Its control output end with
The integrated power amplifier low noise amplification module connection of the distal end slave, for exporting the radio frequency output control letter to the distal end slave
Number；At least one wireless signal RFID detects terminal, is communicated with the dual polarized antenna wireless duplex, for receiving described penetrating
Frequency test signal, and terminal of the feedback comprising the terminal identity information feeds back signal to the dual polarized antenna；
Characterized in that, the monitoring is comprised the following steps：
(1) slave monitor portion receives the signal detection instruction that near-end main frame is sent to distal end slave, according to instruction output radio frequency
Test signal, and radiated to the original wireless coverage area for laying wireless signal RFID detection terminals by dual polarized antenna；
(2) slave monitor portion judges that whether the terminal for receiving all wireless signal RFID detections terminals at the appointed time is anti-
Feedback signal, is then to enter step (3a), otherwise into step (3b)；
(3a) slave monitor portion according to each wireless signal RFID detect terminal terminal feedback signal, calculate dual polarized antenna to
Each wireless signal RFID detects the space path loss of terminal radiation process, and distal end slave is determined most according to wherein maximum space path loss
Small transmission power, and output control signal, control the distal end slave to be worked by minimum emissive power；
(3b) slave monitor portion output control signal, controls the power of the distal end slave increase radio frequency output, and determines remote
End slave can be polled to all RFID in its overlay area and detect the minimum emissive power of terminal modules, and control distal end from
Machine works by minimum emissive power.
4. a kind of monitoring method based on described in claim 3, it is characterised in that also include：Slave monitor portion will be received
The monitoring result signals of terminal feedback signal of wireless signal RFID detection terminals be sent to the near-end main frame, and near-end
Monitoring result signals are reported to main frame the hand-held terminal device of center host and wireless maintenance personnel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104159285B (en) * | 2014-09-02 | 2018-03-27 | 辽宁邮电规划设计院有限公司 | A kind of LTE rooms subsystem autopower and adjusting method |
| CN106162701B (en) * | 2016-07-20 | 2019-06-07 | 浙江昱能科技有限公司 | A kind of communications setting amending method of wireless communication network |
| CN112600610B (en) * | 2020-12-09 | 2023-03-24 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Beidou communication module testing method, device, equipment and storage medium |
| CN115361309B (en) * | 2022-10-24 | 2022-12-27 | 深圳国人无线通信有限公司 | Split type elevator communication system capable of being remotely monitored |
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| CN102176252A (en) * | 2011-01-26 | 2011-09-07 | 新疆中钜电子科技有限公司 | Equipment and facility safety inspection intelligent patrolling operation system and application method thereof |
| CN203313412U (en) * | 2013-06-24 | 2013-11-27 | 吕冬冬 | LTE signal coverage system accessed by optical fibers |
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| US8111998B2 (en) * | 2007-02-06 | 2012-02-07 | Corning Cable Systems Llc | Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174773Y (en) * | 2008-04-09 | 2008-12-31 | 厦门特力通信息技术有限公司 | Central monitored split type apparatus |
| CN201742417U (en) * | 2010-07-07 | 2011-02-09 | 深圳国人通信有限公司 | Multi-mode digital optical fiber repeater as well as near-end machine, far-end machine and coverage system thereof |
| CN102176252A (en) * | 2011-01-26 | 2011-09-07 | 新疆中钜电子科技有限公司 | Equipment and facility safety inspection intelligent patrolling operation system and application method thereof |
| CN203313412U (en) * | 2013-06-24 | 2013-11-27 | 吕冬冬 | LTE signal coverage system accessed by optical fibers |
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