CN109348489A - A kind of TD-LTE endpoint detection system - Google Patents
A kind of TD-LTE endpoint detection system Download PDFInfo
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- CN109348489A CN109348489A CN201811480723.0A CN201811480723A CN109348489A CN 109348489 A CN109348489 A CN 109348489A CN 201811480723 A CN201811480723 A CN 201811480723A CN 109348489 A CN109348489 A CN 109348489A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/20—Performing reselection for specific purposes for optimising the interference level
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
Abstract
The invention discloses a kind of TD-LTE endpoint detection systems.The system includes: master controller and TD-LTE terminal detection device；The current working frequency of target mobile phones terminal is configured to synchronous detection module and LTE base station module by master controller, public network frequency point is configured to synchronous detection module and synchronous interference module, synchronous detection module synchronizes detection according to public network frequency point, obtains the sync bit that public network frequency point corresponds to public network base station cell；Synchronous interference module generates synchronous interference signal according to public network frequency point, and after the sync bit of public network base station cell emits synchronous interference signal to public network frequency point, target mobile phones terminal, which detects, can not connect other base station modules, then by the current working frequency of the current working frequency gravity treatment of itself to LTE base station module.TD-LTE detection device of the invention has reached the detectable technical effect for identifying all mobile phone terminals in current coverage area.
Description
Technical field
The present embodiments relate to mobile communication technology more particularly to a kind of TD-LTE endpoint detection systems.
Background technique
Timesharing long term evolution (Time Division Long Term Evolution, TD-LTE) terminal detection device, it is main
Will be using being the detection of short distance mobile terminal, for detecting distance generally at 20 meters or so, application scenarios include subway, and public transport is large-scale
The scenes such as exhibition.
TD-LTE terminal detection device common at present, most of is all that can only operate in one-segment list within the same time
Frequency point or TD-LTE terminal detection device provide detachable broadband power amplifier module, broadband power amplifier module are articulated in mobile whole
Frequency range where holding, but dismantle back and forth very inconvenient.Meanwhile China Mobile TD-LTE has covered multiple frequency ranges at present,
And the covering that there is multiband multifrequency point in the same place has been normality, and mobile phone terminal is in multiple public network cells and multiple frequencies
Toggling between section is also very normal thing, if TD-LTE detection device only supports one-segment single-frequency point, in many fields
It is unable to satisfy practical application request under scape, can not identify all mobile phone terminals in overlay area.
Summary of the invention
In view of this, the present invention provides a kind of TD-LTE endpoint detection system, it is detectable to realize TD-LTE detection device
Identify the technical effect of all mobile phone terminals in current coverage area.
In a first aspect, the embodiment of the invention provides a kind of TD-LTE endpoint detection systems, comprising: master controller and TD-
LTE terminal detection device；The TD-LTE terminal detection device includes baseband processor；The baseband processor includes LTE base
It stands module, synchronous detection module and synchronous interference module；The master controller respectively with the LTE base station module, described synchronous
Detection module and synchronous interference module connection；
The current working frequency of target mobile phones terminal is configured to the synchronous detection module and described by the master controller
Public network frequency point is configured to the synchronous detection module and the synchronous interference module, the synchronous detection mould by LTE base station module
Root tuber synchronizes detection according to the public network frequency point, obtains the sync bit that the public network frequency point corresponds to public network base station cell；Institute
It states synchronous interference module and synchronous interference signal is generated according to the public network frequency point, and in the sync bit of public network base station cell to institute
After stating public network frequency point transmitting synchronous interference signal, target mobile phones terminal, which detects, can not connect other base station modules, then will be certainly
Current working frequency of the current working frequency gravity treatment of body to the LTE base station module.
Further, sync bit of the synchronous interference module in public network base station cell emits the public network frequency point same
After walking interference signal, the signal-to-noise ratio that the public network frequency point corresponds to synchronization signal is lower than default cell reselection thresholding.
Further, the synchronous interference signal is PSS interference signal and SSS interference signal.
Further, the TD-LTE terminal detection device further include: FPGA module, the FPGA module respectively with it is described
LTE base station module and synchronous detection module connection；
The FPGA module executes Digital Up Convert, multichannel baseband signal that the LTE base station module is generated and described
The multichannel baseband signal that synchronous detection module generates is converted to digital medium-frequency signal, and is sent to radio-frequency module；
The FPGA module executes Digital Down Convert, and the digital medium-frequency signal that radio-frequency module is sent is converted to base band letter
Number, and it is sent to the LTE base station module and the synchronous detection module.
Further, the TD-LTE terminal detection device further include: radio-frequency module, the radio-frequency module and the FPGA
Module connection；The radio-frequency module includes analog-to-digital conversion module, D/A converter module and filter and amplification module；
The radiofrequency signal that the filter and amplification module sends receiving antenna is filtered amplification, obtains analog intermediate frequency letter
Number；Analog-to-digital conversion is carried out to analog if signal by analog-to-digital conversion module and obtains digital medium-frequency signal, is sent to the FPGA
Module；
Digital-to-analogue conversion is carried out to the digital medium-frequency signal that the FPGA module is sent by the D/A converter module to obtain
Analog if signal, and amplification is filtered to analog if signal by filter and amplification module and is modulated to radiofrequency signal, it sends
To broadband power amplifier module.
Further, the TD-LTE terminal detection device further include: broadband power amplifier module, the broadband power amplifier module with
The radio-frequency module connection；
The broadband power amplifier module carries out power amplification to the radiofrequency signal that radio-frequency module is sent, and will obtain after power amplification
To radiofrequency signal be sent to transmitting antenna.
Further, the LTE base station module is configured in single cell；The LTE base station module and target mobile phones terminal
Carry out Signalling exchange.
Further, the frequency range of the LTE base station module includes: band38, band38, band40 and band41.
Further, the transmission power of the broadband power amplifier module is 1 watt.
Further, the master controller is mobile phone terminal or tablet computer.
The present invention works as master by being provided with synchronous detection module and synchronous interference module in TD-LTE terminal detection device
The current working frequency of target mobile phones terminal is configured to synchronous detection module and LTE base station module by controller, by public network frequency point
It is configured to synchronous detection module and synchronous interference module, synchronous detection module synchronizes detection according to public network frequency point, obtains public affairs
Net frequency point corresponds to the sync bit of public network base station cell；Synchronous interference module generates synchronous interference signal according to public network frequency point, and
After the sync bit of public network base station cell emits synchronous interference signal to public network frequency point, target mobile phones terminal, which detects, to be connected
Other base station modules are connected, then are realized the current working frequency gravity treatment of itself to the current working frequency of LTE base station module
The detectable technical effect for identifying all mobile phone terminals in current coverage area of TD-LTE detection device.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram for TD-LTE endpoint detection system that the embodiment of the present invention one provides；
Fig. 2 is a kind of display schematic diagram for target mobile phones terminal switch operating frequency point that the embodiment of the present invention one provides；
Fig. 3 is a kind of structural block diagram of TD-LTE endpoint detection system provided by Embodiment 2 of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
It should be noted why TD-LTE terminal detection device in the prior art is not configured to multiband
, it is primarily due to the limitation of portable scene, and the baseband processor in TD-LTE terminal detection device stores and processs energy
Power is limited, and concurrent multiple cell can not be supported to run in a baseband chip.It, can significantly if increasing the quantity of baseband processor
Increase the power consumption of TD-LTE terminal detection device, increases and radiate the problem of increasing so as to cause there is battery capacity, and drop
Low portable capability, and TD-LTE terminal detection device is a kind of short distance application apparatus, cannot pass through reduces portable capability
Achieve the purpose that multiband multifrequency point.Currently, major part TD-LTE terminal detection device uses the monomer list similar with macro base station
Frequency range power amplifier, index is functional, but TD-LTE terminal detection device need to additionally increase to achieve the purpose that support multiband
A broadband power amplifier module is added, so that the power consumption of TD-LTE terminal detection device is bigger, and not readily portable.In order to solve
TD-LTE terminal detection device does not support the problem of multiband multifrequency point in the prior art, proposes a kind of TD-LTE terminal detection
System.
Embodiment one
Fig. 1 is a kind of structural block diagram for TD-LTE endpoint detection system that the embodiment of the present invention one provides, in the present embodiment
The TD-LTE endpoint detection system of offer can be adapted for the scene for all mobile phone terminals that detection identifies in overlay area.Ginseng
According to Fig. 1, which includes: master controller 10 and TD-LTE terminal detection device 20.
Wherein, TD-LTE terminal detection device 20 includes baseband processor 201；Baseband processor 201 includes long term evolution
(Long Term Evolution, LTE) base station module 2011, synchronous detection module 2012 and synchronous interference module 2013；Master control
Device 10 processed is connect with LTE base station module 2011, synchronous detection module 2012 and synchronous interference module 2013 respectively.
In embodiment, the current working frequency of target mobile phones terminal is configured to synchronous detection module by master controller 10
2012 and LTE base station module 2011, public network frequency point is configured to synchronous detection module 2012 and synchronous interference module 2013, it is synchronous
Detection module 2012 synchronizes detection according to public network frequency point, obtains the sync bit that public network frequency point corresponds to public network base station cell；
Synchronous interference module 2013 generates synchronous interference signal according to public network frequency point, and in the sync bit of public network base station cell to public network
After frequency point emits synchronous interference signal, target mobile phones terminal, which detects, can not connect other base station modules, then working as itself
Current working frequency of the preceding working frequency points gravity treatment to LTE base station module 2011.
It should be noted that the current working frequency of target mobile phones terminal is configured to synchronous inspection in master controller 10
It surveys before module 2012, it is corresponding all to be currently located public network cell by work mould terminal acquisition TD-LTE terminal detection device 20
Then frequency range and frequency point select a frequency range as primary band from acquired all frequency ranges and frequency point, and from the dominant frequency
It selects a frequency point as dominant frequency point in section, which is configured to TD-LTE terminal detection device 20, using as TD-LTE
The working frequency points of terminal detection device 20, so that TD-LTE terminal detection device 20 carries out mobile phone terminal according to the working frequency points
Detection identification.Wherein, work mould terminal can be mobile phone terminal, can also be tablet computer, be not limited thereto.In embodiment
In, master controller 10 is mobile phone terminal or tablet computer.Certainly, work mould terminal and master controller 10 can set for the same terminal
Standby, i.e., it can also be the same tablet computer that work mould terminal and master controller 10, which can be the same mobile phone terminal,.Herein it should be noted that
, the corresponding all frequency ranges in public network cell are currently located in order to get TD-LTE terminal detection device 20 by work mould terminal
And frequency point, acquisition APP in base station need to be installed in work mould terminal, and get by base station acquisition APP and be currently located public network
The corresponding all frequency ranges of cell and frequency point, and the primary band of selection and dominant frequency point are configured to TD-LTE terminal detection device 20.
Certainly, acquisition APP in base station is also installed in the mobile phone terminal or tablet computer as master controller 10, is acquired by the base station
APP gets the LTE base station of other public network cells of the LTE base station and periphery that are currently located public network cell.
Wherein, LTE base station module 2011 is configured in single cell, it can be understood as, one is equipped in each public network cell
A LTE base station module 2011.In embodiment, LTE base station module 2011 executes the signal of LTE base station for simulating LTE base station
Processing, for example, completing the Signalling exchange with mobile phone terminal, broadcast transmission, detection of preamble and multi-upstream access signal processing.Wherein,
Signalling exchange refers to the transmission of the data information between LTE base station module 2011 and mobile phone terminal；Broadcast transmission refers to LTE
Synchronization signal is sent to mobile phone terminal by base station module 2011；Detection of preamble is referred to according to work mould terminal to the LTE base station mould
The process of block 2011 configuration work frequency range and working frequency points；Multi-upstream access signal processing refers to whole to master controller 10 or work mould
The process that the signal that end is sent is handled.
It should be noted that synchronous detection module 2012 respectively with LTE base station module 2011 and synchronous interference mould
Block 2013 connects.In embodiment, the work at present that APP gets target mobile phones terminal is acquired by the base station of master controller 10
The public network frequency point of frequency point (current working frequency 1) and periphery, and the public network frequency point of the current working frequency 1 and periphery is configured to
Synchronous detection module 2012, the synchronous detection current working frequency 1 of triggering synchronous detection module 2012, obtains the current working frequency
The sync bit of 1 corresponding public network base station cell；Synchronous detection module 2012 is triggered simultaneously to be carried out together according to the public network frequency point on periphery
Step detection, the public network frequency point for obtaining periphery correspond to the sync bit of public network base station cell.Certainly, master controller 10 is also by target hand
The current working frequency of machine terminal is configured to LTE base station module 2011, and public network frequency point is configured to synchronous interference module
2013, so that LTE base station module 2011 creates the cell of target frequency point according to the current working frequency of target mobile phones terminal, and it is same
Walk the synchronous interference signal that interference module 2013 generates the sync bit of corresponding public network base station cell according to the public network frequency point on periphery.
Wherein, target frequency point is just the current working frequency of target mobile phones terminal.In order to during description technique scheme, convenient for pair
The current working frequency of target mobile phones terminal and the current working frequency of LTE base station module distinguish, in embodiment, by mesh
The current working frequency of mark mobile phone terminal is denoted as current working frequency 1, and the current working frequency of LTE base station module is denoted as currently
Working frequency points 2.It should be noted that by the current working frequency of target mobile phones terminal be configured to LTE base station module it
Afterwards, the dominant frequency point that the current working frequency of LTE base station module is configured by work mould terminal is switched to current working frequency 1.
In embodiment, after LTE base station module 2011 creates the cell of target frequency point according to current working frequency 1,
LTE base station module 2011 emits synchronization signal according to the target frequency point.Wherein, synchronization signal is only in primary synchronization signal
(Primary Synchronization Signal, PSS) and secondary synchronization signal (Secondary Synchronization
Signal, SSS) position appearance, it can be understood as the time that synchronization signal occurs is very short, correspondingly, passing through synchronous interference mould
The time that the synchronous interference signal that block 2013 emits occurs is also very short, it can upsets periphery by the powerful synchronous of burst
The signal of public network Base Transmitter, and be in nonsynchronous signal launch time when, no need to send synchronous interference signals, reduce
The power consumption of TD-LTE terminal detection device 20, to improve detection efficiency.Wherein, synchronization signal is PSS signal and/or SSS
Signal.Correspondingly, synchronous interference signal can also be PSS interference signal and/or SSS interference signal.It should be noted that it
So allowing for the ability that PSS and SSS sequence has anti-white noise disturbance using synchronous interference mode and adopting in embodiment
Use PSS signal and/or SSS signal as synchronization signal, and using PSS interference signal and/or SSS interference signal as synchronization
Interference signal.If the transmission power of TD-LTE terminal detection device must be far longer than public network frequency point using single white noise
The transmission power of corresponding public network base station in turn results in TD- to cause the transmission power of TD-LTE terminal detection device very big
The power consumption of LTE terminal detection device is also required to very greatly, and then the volume of TD-LTE terminal detection device is also very big, is not easy to take
Band.
Herein it should be noted that in synchronous interference module 2013 not only to the public network frequency point transmitting synchronous interference letter on periphery
Number, also to other frequency points transmitting synchronous interference letter where TD-LTE terminal detection device in public network cell in addition to target frequency point
Number.Due to interference sequence of operations fix, operand is smaller, thus in TD-LTE terminal detection device 20 increase synchronize it is dry
Module 2013 is disturbed, excessive data processing load is not increased baseband processor 201.
In embodiment, sync bit of the synchronous interference module 2013 in public network base station cell, which emits public network frequency point, synchronizes
After interference signal, the signal-to-noise ratio that public network frequency point corresponds to synchronization signal is lower than default cell reselection thresholding.Wherein, cell weight is preset
New thresholding is received with Reference Signal Received Power (Reference Signal Receiving Power, RSRP) and reference signal
Quality (Reference Signal Receiving Quality, RSRQ) is configured for reference standard.In embodiment, in advance
If the RSRP and RSRQ of public network base station cell are less than TD- where cell reselection thresholding can be understood as the public network frequency point on periphery
LTE terminal detection device 20 is currently located the threshold T h of the RSRP and RSRQ of public network cell.It also is understood as, public network frequency point pair
Answering the signal-to-noise ratio of synchronization signal that can drop to is more than default cell reselection thresholding Th, illustratively, in embodiment, presets cell
Gravity treatment thresholding Th can be configured to 3dB, i.e., the RSRP and RSRQ of public network base station cell are with respect to TD-LTE where the public network frequency point on periphery
Terminal detection device 20 is currently located the low 3dB of RSRP and RSRQ of public network cell.The public network base station where the public network frequency point on periphery
The RSRQ of cell is more than 3dB lower than periphery public network frequency point cell, and the target mobile phones for the public network frequency point for being registered to periphery can be made whole
End executes cell reselection, so that gravity treatment is to other frequency points.Due under the RSRQ of public network base station cell where the public network frequency point on periphery
It drops to more than 3dB, the public network frequency point of upper periphery can not be connected so as to cause target mobile phones terminal, is i.e. target mobile phones terminal can not connect
Other base station modules are connected, the current working frequency of LTE base station module 2011 is eventually entered into.Certainly, in order to enable being registered to week
Target mobile phones terminal on the public network base station cell on side carries out cell reselection, and LTE base station module 2011 passes through closely high-power
Covering so that target mobile phones terminal can gravity treatment to LTE base station module 2011 current working frequency.In target mobile phones terminal
It is switched to after the current working frequency of LTE base station module 2011, target mobile phones terminal will be linked into the LTE base station module
2011, so that LTE base station module 2011 can carry out Signalling exchange, and then TD- by Signalling exchange process and target mobile phones terminal
LTE terminal detection device 20 can carry out safety detection to target mobile phones terminal.Fig. 2 is a kind of mesh that the embodiment of the present invention one provides
Mark the display schematic diagram of mobile phone terminal switch operating frequency point.With reference to Fig. 2, illustratively, it is assumed that TD-LTE terminal detection device is worked as
Nearby there are four LTE base stations, respectively LTE base station 210 and LTE base station 220 for preceding place public network cell, while being additionally provided with TD-
It is LTE base station 230 that LTE terminal detection device, which is currently located the corresponding LTE base station in public network cell,.Wherein, LTE base station 220 is arranged
There are three, LTE base station 210 is institute before the public network cell where entering TD-LTE terminal detection device of target mobile phones terminal 240
The base station of connection.In embodiment, target mobile phones terminal 240 enter TD-LTE terminal detection device where public network cell it
Afterwards, in order to by the TD-LTE terminal detection device detection identify target mobile phones terminal 240, need to by synchronous detection module,
The synchronization signal that synchronous interference module emits LTE base station 210 and LTE base station 220 is interfered, so that 210 He of LTE base station
It is more than default cell reselection thresholding that the signal-to-noise ratio for the synchronization signal that LTE base station 220 emits, which drops to, so that target mobile phones terminal
240 can not connect LTE base station 210 and LTE base station 220, be ultimately connected to public network cell where TD-LTE terminal detection device
LTE base station 230.It wherein, is that target mobile phones terminal 240 is entering TD-LTE terminal detection device in order to illustrate LTE base station 210
The base station connected before the public network cell of place, be shown in broken lines in Fig. 2 LTE base station 210 and target mobile phones terminal 240 it
Between correspondence.
The technical solution of the present embodiment, by be provided in TD-LTE terminal detection device synchronous detection module with it is synchronous
Interference module, when the current working frequency of target mobile phones terminal is configured to synchronous detection module and LTE base station mould by master controller
Public network frequency point is configured to synchronous detection module and synchronous interference module by block, and synchronous detection module carries out same according to public network frequency point
Step detection, obtains the sync bit that public network frequency point corresponds to public network base station cell；Synchronous interference module generates same according to public network frequency point
Interference signal is walked, and after the sync bit of public network base station cell emits synchronous interference signal to public network frequency point, target mobile phones are whole
End, which detects, can not connect other base station modules, then by the current working frequency gravity treatment of itself to the current of LTE base station module
Working frequency points realize the detectable technology effect for identifying all mobile phone terminals in current coverage area of TD-LTE detection device
Fruit.
Embodiment two
Fig. 3 is a kind of structural block diagram of TD-LTE endpoint detection system provided by Embodiment 2 of the present invention, and the present embodiment is
On the basis of the above embodiment 1, further embody is made to the structure of TD-LTE endpoint detection system.It, should with reference to Fig. 3
TD-LTE terminal detection device in TD-LTE endpoint detection system further include: field programmable gate array (Field-
Programmable Gate Array, FPGA) module 202, radio-frequency module 203 and broadband power amplifier module 204；Radio-frequency module 203
Including analog-to-digital conversion module 2031, D/A converter module 2032 and filter and amplification module 2033.
Wherein, FPGA module 202 respectively with LTE base station module 2011 and synchronous detection module 2012 and radio-frequency module
203 connections；Broadband power amplifier module 204 is connect with radio-frequency module 203；Filter and amplification module 2033 respectively with analog-to-digital conversion mould 2031
And D/A converter module 2032 connects.
In embodiment, FPGA module 202 executes Digital Up Convert, the multichannel base band that LTE base station module 2011 is generated
The multichannel baseband signal that signal and synchronous detection module 2012 generate is converted to digital medium-frequency signal, and is sent to radio-frequency module
203；FPGA module 202 executes Digital Down Convert, and the digital medium-frequency signal that radio-frequency module 203 is sent is converted to baseband signal,
And it is sent to LTE base station module 2011 and synchronous detection module 2012.
The radiofrequency signal that filter and amplification module 2033 sends receiving antenna is filtered amplification, obtains analog intermediate frequency letter
Number；Analog-to-digital conversion is carried out to analog if signal by analog-to-digital conversion module 2031 and obtains digital medium-frequency signal, is sent to FPGA
Module 202；Digital-to-analogue conversion is carried out to the digital medium-frequency signal that FPGA module 202 is sent by D/A converter module 2032 and obtains mould
Quasi- intermediate-freuqncy signal, and amplification is filtered to analog if signal by filter and amplification module 2033 and is modulated to radiofrequency signal, it sends out
It send to broadband power amplifier module 204.
Broadband power amplifier module 204 carries out power amplification to the radiofrequency signal that radio-frequency module 203 is sent, and will be after power amplification
Obtained radiofrequency signal is sent to transmitting antenna.
It should be noted that when FPGA module 202 executes Digital Up Convert, what LTE base station module 2011 generated
Multichannel baseband signal is the multichannel baseband signal sent to target mobile phones terminal；And the multichannel base that synchronous detection module 2012 generates
Band signal is the multichannel baseband signal that the corresponding LTE base station module in peritropous public network base station cell is sent.Correspondingly, in FPGA
When module 202 executes Digital Down Convert, the baseband signal for being sent to LTE base station module 2011 is the letter of target mobile phones terminal transmission
Number；The baseband signal for being sent to synchronous detection module 2012 is the corresponding LTE base station module transmission in public network base station cell on periphery
Signal.
In embodiment, after the radiofrequency signal that radio-frequency module 203 receives receiving antenna transmission, pass through filter and amplification
Module 2033 is filtered amplification to the radiofrequency signal, so that the radiofrequency signal solution of high frequency is transferred to the analog intermediate frequency letter of intermediate frequency
Number, analog-to-digital conversion is then carried out to analog if signal by analog-to-digital conversion module 2031 and obtains corresponding digital medium-frequency signal,
And the digital medium-frequency signal is sent to FPGA module 202, then FPGA module 202 executes Digital Down Convert, will receive
Digital medium-frequency signal be converted to baseband signal, and be sent to LTE base station module 2011 and synchronous detection module 2012, then
Synchronization signal is sent by LTE base station module 2011, synchronous detection module 2012 detects the corresponding public network of public network frequency point on periphery
The sync bit of base station cell, and sync bit is sent to synchronous interference module 2013, to pass through synchronous interference module 2013
Emit synchronous interference signal, to be switched to the current of LTE base station module 2011 to the current working frequency of target mobile phones terminal
Working frequency points, so that carrying out safety detection to target mobile phones terminal by TD-LTE terminal detection device 20.Wherein, down coversion
Purpose be that carrier frequency in order to reduce digital medium-frequency signal or directly removal carrier frequency obtain baseband signal.
Similarly, the multichannel baseband signal that the generation of LTE base station module 2011 is received in FPGA module 202 is detected with synchronous
After the multichannel baseband signal that module 2012 generates, Digital Up Convert is executed, multichannel baseband signal is converted into digital intermediate frequency letter
Number, and digital medium-frequency signal is sent to radio-frequency module 203, then pass through the D/A converter module 2032 in radio-frequency module 203
Digital-to-analogue conversion is carried out to digital medium-frequency signal and obtains analog if signal, and analog intermediate frequency is believed by filter and amplification module 2033
Number being filtered amplification is modulated to radiofrequency signal, and radiofrequency signal is sent to broadband power amplifier module 204, to pass through broadband power amplifier
Module 204 carries out power amplification to the radiofrequency signal, and the radiofrequency signal after power amplification is sent to transmitting antenna, to pass through hair
Penetrate public network base station cell transmission power amplified radiofrequency signal of the antenna to target mobile phones terminal and periphery.Wherein, up-conversion
It is the input signal that there will be certain frequency, changes into the output signal with higher frequency.In embodiment, FPGA module
202 execute Digital Up Convert, and multichannel baseband signal is exactly converted into the digital medium-frequency signal of higher frequency.
It should be noted that TD-LTE terminal detection device does not need the relevant data information of processing user, only use
In the data service of the support big handling capacity of LTE uplink and downlink, in embodiment, without to the side channel in broadband power amplifier module 204
Power ratio (Adjacent Channel Power Ratio, ACPR) and peak-to-average force ratio (Peak-to-Average Power
Ratio, PAPR) the very high index of configuration, it can be understood as, by reducing ACPR and PAPR index request, to use low-power
Broadband power amplifier module so that the broadband power amplifier module of one piece of low-power can cover multiple frequency ranges used by LTE base station module.
Wherein, the frequency range of LTE base station module includes: band38, band38, band40 and band41.Illustratively, for the prior art
In one-segment broadband power amplifier module for, the index of ACPR need to reach -52dBc, and for the width of low-power in this programme
For band power amplifier, the index of ACPR need to only reach -45dBc.Similarly, for the broadband power amplifier mould of one-segment in the prior art
For block, the index of PAPR need to reach 12dB, and in this programme for the broadband power amplifier of low-power, the index of PAPR only needs
Reach 8dB.In embodiment, the transmission power of broadband power amplifier module is 1 watt.
The technical solution of the present embodiment, on the basis of the above embodiments, by reduce broadband power amplifier module ACPR and
PAPR index request can be used low power broadband power amplifier module configuration TD-LTE terminal detection device, realize TD-LTE terminal
Detection device can support multiband by single broadband power amplifier module, and then can detect and identify institute in current coverage area
There is mobile phone terminal.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of TD-LTE endpoint detection system characterized by comprising master controller and TD-LTE terminal detection device；Institute
Stating TD-LTE terminal detection device includes baseband processor；The baseband processor includes LTE base station module, synchronous detection module
With synchronous interference module；The master controller respectively with the LTE base station module, the synchronous detection module and described synchronous
Interference module connection；
The current working frequency of target mobile phones terminal is configured to the synchronous detection module and the LTE base by the master controller
It stands module, public network frequency point is configured to the synchronous detection module and the synchronous interference module, the synchronous detection module root
Detection is synchronized according to the public network frequency point, obtains the sync bit that the public network frequency point corresponds to public network base station cell；It is described same
It walks interference module and synchronous interference signal is generated according to the public network frequency point, and in the sync bit of public network base station cell to the public affairs
Net frequency point emit synchronous interference signal after, target mobile phones terminal, which detects, can not connect other base station modules, then by itself
Current working frequency of the current working frequency gravity treatment to the LTE base station module.
2. TD-LTE endpoint detection system described in claim 1, which is characterized in that the synchronous interference module is in public network base station
After the sync bit of cell emits synchronous interference signal to the public network frequency point, the public network frequency point corresponds to the noise of synchronization signal
Than lower than default cell reselection thresholding.
3. TD-LTE endpoint detection system according to claim 1, which is characterized in that the synchronous interference signal is PSS
Interference signal and SSS interference signal.
4. TD-LTE endpoint detection system according to claim 1, which is characterized in that the TD-LTE terminal detection device
Further include: FPGA module, the FPGA module are connect with the LTE base station module and the synchronous detection module respectively；
The FPGA module executes Digital Up Convert, the multichannel baseband signal that the LTE base station module is generated with it is described synchronous
The multichannel baseband signal that detection module generates is converted to digital medium-frequency signal, and is sent to radio-frequency module；
The FPGA module executes Digital Down Convert, and the digital medium-frequency signal that radio-frequency module is sent is converted to baseband signal, and
It is sent to the LTE base station module and the synchronous detection module.
5. TD-LTE endpoint detection system according to claim 4, which is characterized in that the TD-LTE terminal detection device
Further include: radio-frequency module, the radio-frequency module are connect with the FPGA module；The radio-frequency module include analog-to-digital conversion module,
D/A converter module and filter and amplification module；
The radiofrequency signal that the filter and amplification module sends receiving antenna is filtered amplification, obtains analog if signal；It is logical
It crosses analog-to-digital conversion module and digital medium-frequency signal is obtained to analog if signal progress analog-to-digital conversion, be sent to the FPGA module；
Digital-to-analogue conversion is carried out to the digital medium-frequency signal that the FPGA module is sent by the D/A converter module to be simulated
Intermediate-freuqncy signal, and amplification is filtered to analog if signal by filter and amplification module and is modulated to radiofrequency signal, it is sent to width
Band power amplifier module.
6. TD-LTE endpoint detection system according to claim 5, which is characterized in that the TD-LTE terminal detection device
Further include: broadband power amplifier module, the broadband power amplifier module are connect with the radio-frequency module；
The radiofrequency signal that the broadband power amplifier module sends radio-frequency module carries out power amplification, and will obtain after power amplification
Radiofrequency signal is sent to transmitting antenna.
7. TD-LTE endpoint detection system according to claim 1, which is characterized in that configure the LTE in single cell
Base station module；The LTE base station module and target mobile phones terminal carry out Signalling exchange.
8. TD-LTE endpoint detection system according to claim 1, which is characterized in that the frequency range of the LTE base station module
It include: band38, band38, band40 and band41.
9. TD-LTE endpoint detection system according to claim 6, which is characterized in that the transmitting of the broadband power amplifier module
Power is 1 watt.
10. TD-LTE endpoint detection system described in claim 1, which is characterized in that the master controller be mobile phone terminal or
Tablet computer.
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