CN108718254A - Subway indoor distributed system Fault Locating Method and system - Google Patents
Subway indoor distributed system Fault Locating Method and system Download PDFInfo
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- CN108718254A CN108718254A CN201810458369.5A CN201810458369A CN108718254A CN 108718254 A CN108718254 A CN 108718254A CN 201810458369 A CN201810458369 A CN 201810458369A CN 108718254 A CN108718254 A CN 108718254A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0677—Localisation of faults
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a kind of subway indoor distributed system Fault Locating Methods, including：Step S1), geographical rasterizing processing will be carried out along subway；Step S2), establish the location fingerprint library that geographical grid maps one by one with indoor distributed system signal characteristic；Step S3), it collects the MR records that user terminal periodically reports and is matched with the location fingerprint library；Step S4), the interior matched MR record strips number of institute of statistical geography grid；Step S5), the geographical location of subway indoor distributed system failure is positioned according to geographical grid.The invention also discloses a kind of subway indoor distributed system fault location systems.The present invention realizes the generation synchronous with location fingerprint library of geographical grid and mapping using the covering level character fingerprint for obtaining each geography grid in subway is measured, the MR original documents for acquiring minimum time granularity realize the positioning in real time relatively of subway indoor distributed system failure, realize the precise positioning of subway indoor distributed system failure.
Description
Technical field
The present invention relates to mobile communication indoor distribution system fields, fixed in particular to a kind of subway indoor distributed system failure
Position method and system.
Background technology
Subway has become the most common public trip mode in city, and user is filled in way commonly using mobile Internet
Time, thus ensure that subway user perceives ever more important.But current subway indoor distributed system fault discovery mainly passes through visitor
" by dynamic response " is complained at family, has larger hysteresis quality, and fault location is cumbersome, heavy workload, locating accuracy are low.
The indoor distributed system of mobile communication is mainly made of active equipment and passive compartment system, wherein without source distribution system
System is made of feeder line, passive device, antenna, realizes transmission and covering of the radiofrequency signal in building.Indoor distributed system
Malfunction elimination includes mainly two steps of fault location and troubleshooting.
In the prior art, when compartment system breaks down indoors, the indoor distributed system based on passive RFID tags is adopted
Carry out fault location with antenna feeder monitoring method, the monitoring method is indoors on the basis of compartment system, introduce reader,
The equipment such as RFID tag and combiner, steps are as follows for specific method：
(1) information source of reader and indoor distributed system is combined by combiner；
(2) reader sends out unmodulated continuous wave signal to room divided antenna；
(3) room divided antenna goes out continuous wave signal to space radiation；
(4) RFID tag continuous wave signal energy, and the instruction of reader is responded, by the id information of storage through interior
Compartment system reaches reader；
(5) id information of reader-writer to read RFID label passback, and reach network management center；
(6) network management center monitors id information in real time.
When reader can not read the id information of some RFID tag, it is meant that the antenna where the label disconnects or day
The outer cover of line falls off, and the place of real-time informing webmaster or maintenance personnel's failure antenna will occur warning information and in network management system at this time
Position carries out malfunction elimination.
However, the existing indoor distributed system antenna feeder monitoring method based on passive RFID tags has the following disadvantages：
(1) original indoor distributed system is related to changing, and need to increase RFID tag system.
(2) the antenna feeder failure that can only monitor indoor distributed system cannot monitor the information source failure of indoor distributed system.
(3) it is only applicable to ceiling mount antenna or omnidirectional antenna, does not support leakage cable, therefore existing method is not suitable for ground
The needs such as iron, railway tunnel largely dispose the indoor distributed system of leakage cable.
Based on the above, it is necessary to study a kind of indoor distributed system fault location sides suitable for subway, railway tunnel etc.
Method and system.
Invention content
The object of the present invention is to provide a kind of subway indoor distributed system fault location sides suitable for metro environment
Method.
To achieve the above object, the subway indoor distributed system Fault Locating Method designed by the present invention, including following step
Suddenly：Step S1), geographical rasterizing processing will be carried out along subway；Step S2), it establishes geographical grid and believes with indoor distributed system
The location fingerprint library that number feature maps one by one；Step S3), it collects the MR records that user terminal periodically reports and refers to the position
Line library is matched；Step S4), the interior matched MR record strips number of institute of statistical geography grid；Step S5), it is fixed according to geographical grid
The geographical location of position subway indoor distributed system failure.
Preferably, the step S1) further comprise the steps：Step S11), along subway line Self -adaptive
CQT files；Step S12), parsing CQT files obtain subway indoor distributed system signal characteristic；Step S13), to indoor distribution
System signal characteristics carry out geographical grid number.
Preferably, in the step S11) in, it is carried out using at least two same type of test terminals (11)
Test starts chip sampling period of the portion's test terminal (11) according to the test terminal (11) from the subway starting station simultaneously
Acquisition wireless signal generates CQT files in real time.
Preferably, in the step S12) in, reject subway indoor distributed system letter when train stops platform
Number feature obtains corresponding indoor distribution system using the chip sampling period of the test terminal (11) to subway line as time interval
It unites signal characteristic, the subway indoor distributed system signal characteristic includes main plot unique mark, main plot signal level, adjacent small
Area PCI and adjacent cell signal level.
Preferably, in the step S2) in, to the different obtained identical grids of test terminal (11)
The main plot signal level, the adjacent cell signal level of the corresponding indoor distributed system of number carry out arithmetic average and obtain
In to corresponding grid includes the main plot signal level average strength and the adjacent cell signal level average strength
Signal level intensity vector；The location fingerprint library include geographical grid number, contained number of cells, cell unique mark,
Cell signal level.
Preferably, in the step S3) in, it acquires and the MR original documents for parsing subway indoor distributed system obtains
To main plot unique mark, main plot signal level, the adjacent cell in the MR to be matched records of subway mobile phone user's real-time report
PCI and adjacent cell signal level, and filtered out with identical main plot unique mark and adjacent cell from the location fingerprint library
One or more signal level intensity vectors of PCI；Calculate the signal level of the signal level intensity vector and MR to be matched
The distance between intensity vector；If in signal level intensity vector include only a signal level, using Euclidean distance meter
Formula is calculated, otherwise uses COS distance formula, selection COS distance is maximum or Euclidean distance is most short and meets distance threshold value
It is required that geographical grid number, as MR to be matched record position estimation value.
Preferably, in the step S4) in, the matched MR record strips number of institute in continuous geographical grid is counted,
Geographical grid serial number as not being matched to MR records at the appointed time section is continuous and the continuous grid quantity of serial number is more than and sets
Determine threshold value, then judges that the indoor distributed system overlay area corresponding to the geographical grid is broken down.
Preferably, the threshold value that sets is 50.
The object of the present invention is to provide a kind of subway indoor distributed system fault location systems suitable for metro environment
System.
To achieve the above object, the subway indoor distributed system fault location system designed by the present invention, including：Execute institute
State step S1) geographical rasterizing module (10), execute the step S2) fingerprint base establish module (20), execute the step
Rapid S3) MR record matchings module (30), execute the step S4) MR record statistical modules (40) and execute the step
S5 fault location module (50)).
Preferably, the geographical rasterizing module (10) includes acquisition geo point wireless parameter and multipath signal
Test terminal (11) parses CQT files to obtain the CQT files of the subway indoor distributed system signal characteristic of text formatting
Parsing module (12) and the signal characteristic processing module (13) that serial number is carried out to indoor distributed system signal characteristic, the survey
It is commercial mobile phone or PDA to try terminal (11), and each middle installation identical version of test terminal (11) has acquisition institute in real time
Locate the programs of functions such as wireless parameter, the multipath signal of geo point and is imported with subway station distribution map.
The beneficial effects of the invention are as follows：The subway indoor distributed system Fault Locating Method and system of the present invention is directed to subway
The problem of latitude and longitude information carries out geographical rasterizing can not be obtained under the closure scene such as tunnel, by test terminal chip sampling
Period fixes and the uniform feature of subway train average speed, and the covering of each geography grid in subway tunnel is obtained using measuring
Level character fingerprint realizes that the generation synchronous with location fingerprint library of geographical grid and mapping, the MR for acquiring minimum time granularity are former
Beginning file realizes the positioning in real time relatively of subway indoor distributed system failure, relies on the true reflection wireless environment of periodic report
Measurement report, and by geographical rasterizing and location fingerprint library technology, realize subway indoor distributed system failure it is accurate calmly
Position.
Description of the drawings
Fig. 1 is the flow chart of the subway indoor distributed system Fault Locating Method of the preferred embodiment of the present invention.
Fig. 2 is the flow chart of the step S1 of the subway indoor distributed system Fault Locating Method in Fig. 1.
Fig. 3 is the structural schematic diagram of the subway indoor distributed system fault location system of the preferred embodiment of the present invention.
Fig. 4 is the structural schematic diagram of the geographical rasterizing module of subway indoor distributed system fault location system in Fig. 3.
Each part numbers are as follows in figure：Geographical rasterizing module 10 (wherein, tests terminal 11, CQT document analysis modules
12, signal characteristic processing module 13), fingerprint base establish module 20, MR record matchings module 30, MR record statistical module 40, therefore
Hinder locating module 50.
Specific implementation mode
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
MR (Measurement Report) i.e. measurement reports are that user terminal reports in executing business procedure to network
, measurement report that can reflect user terminal current radio environment truth.The report cycle of periodical MR is generally set
It is 5 seconds.Based on this, the present invention using the MR original documents of acquisition come realize subway indoor distributed system fault zone it is real-time,
Precise positioning, to promote user's perception and efficiency of operation.Subway indoor distributed system provided by the present invention fault location side
Method and system do not depend on third-party FRID label information, can avoid doing any change to original indoor distributed system, can be simultaneously
The antenna feeder and information source failure for monitoring indoor distributed system can be suitably used for the scenes such as ceiling mount antenna, omnidirectional antenna or leakage cable.
Referring to Fig. 1, each step of the subway indoor distributed system Fault Locating Method of the preferred embodiment of the present invention is detailed
It states as follows：
(including subway tunnel and platform track) along subway is carried out geographical grid by step S1, geographical rasterizing module 10
Change is handled.
Fig. 2 and Fig. 3 are please referred to, geographical rasterizing module 10 includes acquisition geo point wireless parameter and multipath signal
Test terminal 11, CQT document analysis module 12 and signal characteristic processing module 13.
Step S11, using test terminal 11 along subway line Self -adaptive CQT files.
First, using at least two same types test terminal 11 (such as：Commercial mobile phone, PDA etc.), each test terminal
The program of the functions such as wireless parameter, multipath signal for having the residing geo point of acquisition in real time of installation identical version in 11, and
Drawn subway station distribution map is imported in test terminal 11.
Then, start program progress CQT (the Call Quality that above-mentioned multi-section tests terminal 11 simultaneously from the subway starting station
Test, call quality test calls), start to acquire wireless signal in real time according to the chip fixed sample period of test terminal 11.
When at the initial and end of train inlet parking, startup and in-track platform, on the subway platform distribution map imported respectively into
Row gets (note ready manually：Get ready and not overlap manually every time), subway terminals are continued until, to obtain each survey
The CQT files that examination terminal 11 generates respectively.
Step S12 parses CQT files using CQT document analysis module 12 and obtains subway indoor distributed system signal characteristic.
First, some CQT file is parsed by having the CQT document analysis module 12 of the ability of parsing CQT files, obtained
The subway indoor distributed system signal characteristic of text formatting, subway indoor distributed system signal characteristic include：It uniquely marks main plot
Knowledge, main plot signal level, adjacent cell PCI (Physical Cell Identifier, Physical Cell Identifier, for distinguishing not
With the wireless signal of cell), adjacent cell signal level.
Then, according to before Train Stopping, start when manually get ready, reject train stop platform when signal characteristic
Record can complete the uniform decile by same time interval (the chip sampling period for testing terminal) to whole subway, and
Obtain the indoor distributed system signal characteristic record corresponding to each time interval.
Step S13 carries out at geographical rasterizing indoor distributed system signal characteristic using signal characteristic processing module 13
Reason.
Indoor distributed system signal characteristic is carried out serial number by signal characteristic processing module 13, obtains current CQT files
Geographical rasterizing handle data.
Remaining CQT files are handled using above-mentioned same steps, obtain the whole subway platform of different test terminal-pairs and tunnel
The geographical rasterizing in road is handled, to realize the geographical rasterizing processing of whole subway platform and tunnel.
In rasterizing processing, the length L of geographical grid is calculated according to following formula：
L=T*V
Wherein,
T is the test terminal chip sampling period, and unit is s (second)；
V is subway train average speed, and unit is m/s (meter per second).
According to being got ready manually at platform initial and end before, the platform and tunnel of different subway stations can be further calculated out
Including sampling instant quantity, that is, the platform of different subway stations can be identified and grid that tunnel is included number.
Wherein：Subway train average speed V in platformIt stands=subway platform length LIt stands/ (the test terminal chip sampling period
Sampling instant quantity N in T* platformsIt stands)；Subway train average speed V in tunnelTunnel=subway tunnel length LTunnel/ (chip is adopted
Sampling instant quantity N in the tunnels sample cycle T *Tunnel)。
Step S2, fingerprint base establish module 20 and establish the position that geographical grid maps one by one with indoor distributed system signal characteristic
Set fingerprint base.
It is measured simultaneously using multi-section same type test terminal 11 and obtains the covering level of each geography grid in subway tunnel
Characteristic fingerprint, (main plot signal is electric for the signal level corresponding to identical grid number generated for different test terminals 11
Flat, adjacent cell signal level) arithmetic average is carried out, obtain the signal level intensity vector of corresponding indoor distributed system, signal electricity
Flat intensity vector includes main plot signal level average strength, adjacent cell signal level average strength, realizes geographical grid
Generation synchronous with location fingerprint library and mapping, reflect to establish subway geography grid with indoor distributed system signal characteristic one by one
The location fingerprint library penetrated.
Location fingerprint library includes geographical grid number, contained number of cells, cell unique mark, cell signal level.
Step S3, MR record matching module 30 collect user terminal periodically report MR record, and with location fingerprint library
It is matched.
First, MR record matchings module 30 acquires and parses subway indoor distributed system OMC (Operation and
Maintenance Center, operation maintenance center) period generate MR (Measurement Report, measurement report) it is original
File, obtain subway mobile phone user's real-time report MR to be matched record in main plot unique mark, main plot signal level,
Adjacent cell PCI and adjacent cell signal level, and filter out from location fingerprint library small with identical main plot unique mark and neighbour
One or more signal level intensity vectors of area PCI.
Then, the distance between the signal level intensity vector of these signal level intensity vectors and MR to be matched is calculated.
If in signal level intensity vector include only a signal level, using Euclidean distance calculation formula, cosine is otherwise used
Range formula.
Finally, the grid number that COS distance is maximum or Euclidean distance is most short and meets distance threshold value requirement is chosen,
Position estimation value as MR to be matched records.
Euclidean metric (Euclidean Metric) is also referred to as Euclidean distance, is the distance definition of a generally use,
Refer to the actual distance in m-dimensional space between two points, or the natural length (i.e. the distance of the point to origin) of vector.Two
Euclidean distance in peacekeeping three dimensions is exactly the actual range between 2 points.
Cosine similarity is also known as cosine similarity, is to assess theirs by calculating two vectorial included angle cosine values
Similarity.Vector according to coordinate value, is plotted in vector space by cosine similarity, such as most common two-dimensional space.
Step S4, MR record the matched MR record strips number of institute in 40 statistical geography grid of statistical module.
MR record statistical modules 40 count the matched MR record strips number of institute in continuous geographical grid, when MR record strip numbers are
When empty, it is meant that the indoor distributed system corresponding to corresponding geography grid breaks down.
Step S5, fault location module 50 position the geographical location of subway indoor distributed system failure according to geographical grid.
If the geographical grid serial number that MR record statistical modules 40 are not matched to MR records in section at the appointed time is continuous, and
And the continuous grid quantity of serial number be more than setting threshold value (such as：50) it when, can determine that corresponding to these continuous geographical grids
Indoor distributed system overlay area is broken down, and is reported to fault location module 50.50 base area of fault location module
Reason grid serial number is accurately positioned the failure of indoor distributed system.
Fig. 2 and Fig. 3 are please referred to, the present invention also provides a kind of subway indoor distributed system fault location systems, use
It is positioned in the information source part of indoor distributed system and the failure of antenna feeder part, which includes：Geographical rasterizing module
10, fingerprint base establishes module 20, MR record matchings module 30, MR record statistical modules 40 and fault location module 50.
Geographical rasterizing module 10 is used to carry out geographical rasterizing processing to subway tunnel and platform track, including locality
The test terminal 11 of reason point wireless parameter and multipath signal parses to obtain in the subway room of text formatting minute CQT files
The CQT document analysis module 12 of distribution system signal characteristic and the signal that serial number is carried out to indoor distributed system signal characteristic are special
Levy processing module 13.It can be commercial mobile phone, PDA etc. to test terminal 11, and having for identical version is installed in each test terminal 11
The foreground software of the functions such as wireless parameter, the multipath signal of the residing geo point of acquisition in real time, tests the foreground software in terminal 11
It is upper to import drawn subway station distribution map.
Fingerprint base establishes the position that module 20 maps one by one for establishing geographical grid and indoor distributed system signal characteristic
Fingerprint base.Location fingerprint library includes geographical grid number, contained number of cells, cell unique mark, cell signal level.
MR record matchings module 30 is for parsing the MR original documents being collected into, and by every MR record and position
Fingerprint base is matched.Specifically, MR record matchings module 30 acquires and parses what the subway indoor distributed system OMC periods generated
MR original documents obtain the main plot unique mark in the MR to be matched records of subway mobile phone user's real-time report, main plot is believed
Number level, adjacent cell PCI and adjacent cell signal level, and filtered out with identical main plot unique mark from location fingerprint library
With one or more signal level intensity vectors of adjacent cell PCI.MR record matchings module 30 calculates these signal level intensity
Vectorial the distance between the signal level intensity vector with MR to be matched.If only comprising a letter in signal level intensity vector
When number level, using Euclidean distance calculation formula, COS distance formula is otherwise used.MR record matchings module 30 choose cosine away from
Grid number that is most short from maximum or Euclidean distance and meeting distance threshold value requirement, the position as MR to be matched records is estimated
Evaluation.
MR records statistical module 40 for the matched MR record strips number of institute in statistical geography grid, judges indoor distributed system
With the presence or absence of failure.MR record statistical modules 40 count the matched MR record strips number of institute in continuous geographical grid, when MR is recorded
When item number is empty, then judge that the indoor distributed system corresponding to corresponding geographical grid breaks down.If MR record statistics moulds
The geographical grid serial number that block 40 is not matched to MR records in section at the appointed time is continuous, and the continuous grid quantity of serial number is more than
Setting threshold value (such as：50) when, it can determine that the indoor distributed system overlay area corresponding to these continuous geographical grids occurs
Failure.
After fault location module 50 receives the indoor distributed system Trouble Report of MR record statistical modules 40, according to geographical grid
Lattice serial number is accurately positioned the failure of indoor distributed system.
Below with reference to No. 3 lines of Wuhan subway example to the present invention subway indoor distributed system Fault Locating Method into
The more specifical explanation of row.
Step S1 completes the geographical rasterizing processing of No. 3 line subway tunnels of Wuhan subway and platform track.
Tester carries test terminal IPHONE 6S A and the survey for having installed foreground test software Pilot Walktour
Try terminal IPHONE 6S B, from subway starting point grand plan main road platform enter subway train tail portion start simultaneously at CQT test.Work as row
When vehicle starts, leaves platform or reach next platform parking, tester will be in the subway platform point for having imported test terminal A
Got ready (note on Butut manually：Get ready and not overlap manually every time), it is continued until the main roads subway terminal Dun Yang
Platform, to obtain the CQT files for two .rcu formats that test terminal A, B generates.
The CQT files that tester is generated using Pilot Walktour softwares parsing test terminal A, and export TXT texts
The subway indoor distributed system signal characteristic of this format records.Getting ready manually when then, according to Train Stopping before, startup,
Signal characteristic record when train stops platform is rejected, completes (to test terminal A's to the 200ms gap periods of whole subway
The chip sampling period) uniform decile, and obtain the signal characteristic corresponding to each 200ms record information：Sampling instant, master are small
Area's unique mark, main plot signal level, adjacent cell PCI, adjacent cell signal level.Finally, it is recorded for these signal characteristics
Serial number is proceeded by from 1, obtains the whole 11694 ground physics and chemistry grids of No. 3 lines of Wuhan subway that length is 29640 meters.
The CQT files that test terminal B is generated are handled using above-mentioned same steps, realize test terminal B to whole subway station
The processing of the geographical rasterizing in platform and tunnel.
Step S2 numbers corresponding main plot signal electricity for test terminal A, test terminal the B identical grid generated
Flat, adjacent cell signal level carries out arithmetic average, and the signal level intensity vector obtained in corresponding grid (includes main plot signal
Level intensity average value, adjacent cell signal level average strength), believe with indoor distributed system to establish subway geography grid
The location fingerprint library that number feature maps one by one, see the table below.
The location fingerprint library that 1 subway geography grid of table maps one by one with indoor distributed system signal characteristic
Step S3 acquires and parses the MR original documents for 15 minutes granularities that the subway indoor distributed system OMC periods generate,
Obtain main plot unique mark in the MR to be matched records of subway mobile phone user's real-time report, main plot signal level, adjacent small
Area PCI and adjacent cell signal level, and filtered out with identical main plot unique mark and adjacent cell PCI from location fingerprint library
One or more signal level intensity vectors.
Then, the distance between the signal level intensity vector of these signal level intensity vectors and MR to be matched is calculated.
If in signal level intensity vector include only a signal level, using Euclidean distance calculation formula, cosine is otherwise used
Range formula.
Finally, choose COS distance longest or Euclidean distance it is most short and meet distance threshold value require (require lead it is small
The corresponding signal level intensity of area's unique mark be more than -110dBm) grid number, as MR to be matched record grid positions
Estimated value see the table below.
The grid positions estimated value of table 2 MR to be matched records
Step S4, all 11694 geographical interior matched MR of institute of grids are recorded No. 3 lines of grain size statistics Wuhan subway by the hour
Item number.
The matched MR record strips number of institute in the whole geographical grids of table 3
| Grid is numbered | Date | Time point | Matched MR record strips number |
| 4 | 2018/4/2 | 10 | 3 |
| 5 | 2018/4/2 | 10 | 10 |
| 7 | 2018/4/2 | 10 | 9 |
| 11 | 2018/4/2 | 10 | 2 |
| 12 | 2018/4/2 | 10 | 31 |
| 13 | 2018/4/2 | 10 | 2 |
| 14 | 2018/4/2 | 10 | 17 |
| …… | …… | …… | …… |
| 11675 | 2018/4/2 | 10 | 2 |
| 11678 | 2018/4/2 | 10 | 5 |
| 11680 | 2018/4/2 | 10 | 12 |
| 11687 | 2018/4/2 | 10 | 6 |
If the geographical grid serial number for not being matched to MR records in a hour is continuous, and the continuous grid quantity of serial number
When more than setting threshold value (50), it can determine that event occurs in the indoor distributed system overlay area corresponding to these continuous geographical grids
Barrier.
Step S5 is accurately positioned the failure of indoor distributed system according to geographical grid serial number.
It is clearly understood that by above-mentioned record, subway indoor distributed system Fault Locating Method of the invention and system
Advantage is mainly reflected in the following aspects：
(1) present invention carries out geographical rasterizing for that can not obtain latitude and longitude information under the closure scenes such as subway tunnel
Problem, by the fixation of test terminal chip sampling period and the uniform feature of subway train average speed, using multi-section same type
Test terminal measures simultaneously obtains the covering level character fingerprint of each geography grid in subway tunnel, realizes geographical grid and position
The synchronous of fingerprint base is set to generate and map.The MR original documents of minimum time granularity are acquired, realize the event of subway indoor distributed system
The positioning in real time relatively of barrier, relies on the measurement report of the true reflection wireless environment of periodic report, and by geographical rasterizing and
Location fingerprint library technology realizes the precise positioning of subway indoor distributed system failure.
(2) present invention is directed to the positioning of subway indoor distributed system failure, is that the reverse of location fingerprint library location algorithm answers
With.The indoor scene of subway is more special, is a more closed narrow long type environment, and indoor signal is isolated with outdoor signal
It is good, have the characteristics that interference is small, signal level fluctuation is small, and have simultaneously in subway line multiple row train continuously, circular flow,
Adjacent train time interval is shorter (usually less than 5 minutes), it is believed that subway mobile phone user persistently occupies the room of whole subway
Interior compartment system, therefore, once continuous multiple geographical grids are not all matched to the measurement report data of reporting of user, then it is assumed that
For the subway tunnel region indoor distributed system there are failure, accuracy is high.
(3) in MR records carry out matched algorithm with location fingerprint library, using nearest neighbour analysis, in answering for Euclidean distance
Cosine similarity is also added on the basis of, and algorithm is optimized and is updated.
In conclusion the subway indoor distributed system Fault Locating Method and system of the present invention were based on the user terminal period
The measurement report of report realizes, wireless environment in business procedure is currently executed since measurement report really reflects user,
It is exactly the practical operation situation of indoor distributed system, therefore, by being positioned to the real-time monitoring of the measurement report and position, energy
Realize real time monitoring and the positioning of indoor distributed system failure.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of subway indoor distributed system Fault Locating Method, includes the following steps：
Step S1), geographical rasterizing processing will be carried out along subway；
Step S2), establish the location fingerprint library that geographical grid maps one by one with indoor distributed system signal characteristic；
Step S3), it collects the MR records that user terminal periodically reports and is matched with the location fingerprint library；
Step S4), the interior matched MR record strips number of institute of statistical geography grid；
Step S5), the geographical location of subway indoor distributed system failure is positioned according to geographical grid.
2. subway indoor distributed system Fault Locating Method according to claim 1, which is characterized in that the step S1)
Further comprise the steps：
Step S11), along subway line Self -adaptive CQT files；
Step S12), parsing CQT files obtain subway indoor distributed system signal characteristic；
Step S13), geographical grid number is carried out to indoor distributed system signal characteristic.
3. subway indoor distributed system Fault Locating Method according to claim 2 and system, it is characterised in that：Described
Step S11) in, it is tested using at least two same type of test terminals (11), starts institute simultaneously from the subway starting station
It states portion's test terminal (11) and acquires wireless signal generation CQT texts in real time according to the chip sampling period of the test terminal (11)
Part.
4. subway indoor distributed system Fault Locating Method according to claim 3, it is characterised in that：In the step
S12 in), subway indoor distributed system signal characteristic when train stops platform is rejected, to subway line with the test terminal
(11) the chip sampling period is that time interval obtains corresponding indoor distributed system signal characteristic, subway indoor distribution system
Signal characteristic of uniting includes main plot unique mark, main plot signal level, adjacent cell PCI and adjacent cell signal level.
5. subway indoor distributed system Fault Locating Method according to claim 3, it is characterised in that：In the step
S2 in), to the described of the different corresponding indoor distributed systems of the obtained identical grid number of the test terminal (11)
Main plot signal level, the adjacent cell signal level carry out arithmetic average and obtain believing comprising the main plot in corresponding grid
The signal level intensity vector of number level intensity average value and the adjacent cell signal level average strength；The location fingerprint
Library includes geographical grid number, contained number of cells, cell unique mark, cell signal level.
6. subway indoor distributed system Fault Locating Method according to claim 5, it is characterised in that：In the step
S3 it in), acquires and the MR original documents for parsing subway indoor distributed system obtains the to be matched of subway mobile phone user's real-time report
Main plot unique mark, main plot signal level, adjacent cell PCI and adjacent cell signal level in MR records, and from institute's rheme
Set filtered out in fingerprint base one or more signal level intensity with identical main plot unique mark and adjacent cell PCI to
Amount；Calculate the distance between the signal level intensity vector of the signal level intensity vector and MR to be matched；If signal is electric
When in flat intensity vector including only a signal level, using Euclidean distance calculation formula, COS distance formula, choosing are otherwise used
Remainder chordal distance is maximum or Euclidean distance is most short and meets the geographical grid number of distance threshold value requirement, as MR to be matched
The position estimation value of record.
7. subway indoor distributed system Fault Locating Method according to claim 6, it is characterised in that：In the step
S4 in), the matched MR record strips number of institute in continuous geographical grid is counted, as not being matched at the appointed time section MR records
Geographical grid serial number is continuous and the continuous grid quantity of serial number is more than setting threshold value, then judges corresponding to the geographical grid
Indoor distributed system overlay area break down.
8. subway indoor distributed system Fault Locating Method according to claim 7, it is characterised in that：The setting thresholding
Value is 50.The threshold value is adjustable.
9. a kind of subway indoor distributed system fault location system according to claim 1, including：Execute the step
S1 geographical rasterizing module (10)) executes the step S2) fingerprint base establish module (20), execute the step S3)
MR record matchings module (30) executes the step S4) MR record statistical modules (40) and execute the step S5) failure
Locating module (50).
10. subway indoor distributed system fault location system according to claim 9, it is characterised in that：The geography grid
Module of formatting (10) includes the test terminal (11) for acquiring geo point wireless parameter and multipath signal, is parsed to CQT files
It obtains the CQT document analysis module (12) of the subway indoor distributed system signal characteristic of text formatting and indoor distributed system is believed
Number feature carries out the signal characteristic processing module (13) of serial number, and the test terminal (11) is commercialization mobile phone or PDA, each
The work(such as wireless parameter, multipath signal for having the residing geo point of acquisition in real time of installation identical version in the test terminal (11)
Can program and be imported with subway station distribution map.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356147A (en) * | 2018-12-05 | 2020-06-30 | 中国移动通信集团广西有限公司 | Indoor cell fault positioning method and device |
| CN111491255A (en) * | 2020-03-23 | 2020-08-04 | 宜通世纪科技股份有限公司 | Backfill longitude and latitude positioning and expanding method, system and storage medium |
| CN112383338A (en) * | 2020-10-21 | 2021-02-19 | 武汉虹信科技发展有限责任公司 | Room division equipment monitoring method and device |
| CN113840252A (en) * | 2021-09-30 | 2021-12-24 | 上海奥感电子科技有限公司 | Position sensing and positioning system |
| CN114040431A (en) * | 2021-10-08 | 2022-02-11 | 中国联合网络通信集团有限公司 | Network testing method, device, equipment and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920593A (en) * | 2005-08-25 | 2007-02-28 | 广州天润信息科技有限公司 | Position fingerprint identification location method |
| CN102083080A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团江苏有限公司 | Configuration method and system for neighboring cell planning |
| CN103634810A (en) * | 2013-12-24 | 2014-03-12 | 山东润谱通信工程有限公司 | Method of positioning problem regions covered with indoor wireless network |
| CN103648113A (en) * | 2013-12-24 | 2014-03-19 | 山东润谱通信工程有限公司 | Indoor wireless network fault autonomous detection and positioning method |
| CN104050254A (en) * | 2014-06-13 | 2014-09-17 | 无锡北邮感知技术产业研究院有限公司 | Method for building 3D (three dimensional) indoor feature library by using indoor data |
| CN104333906A (en) * | 2014-11-11 | 2015-02-04 | 知图（上海）信息技术有限公司 | Positioning system and method based on indoor wireless signal |
| CN105472644A (en) * | 2016-01-12 | 2016-04-06 | 四川亨通网智科技有限公司 | Deep overlay network quality evaluation method and system based on user behavior characteristics |
| CN106162868A (en) * | 2016-06-08 | 2016-11-23 | 南京理工大学 | High efficiency indoor localization method based on location fingerprint |
| CN106921989A (en) * | 2015-12-25 | 2017-07-04 | 中国移动通信集团北京有限公司 | A kind of communication network field strength distribution determines method and device |
| US20170332345A1 (en) * | 2016-02-23 | 2017-11-16 | At&T Mobility Ii Llc | User equipment assisted indoor small cell location determination |
-
2018
- 2018-05-14 CN CN201810458369.5A patent/CN108718254B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1920593A (en) * | 2005-08-25 | 2007-02-28 | 广州天润信息科技有限公司 | Position fingerprint identification location method |
| CN102083080A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团江苏有限公司 | Configuration method and system for neighboring cell planning |
| CN103634810A (en) * | 2013-12-24 | 2014-03-12 | 山东润谱通信工程有限公司 | Method of positioning problem regions covered with indoor wireless network |
| CN103648113A (en) * | 2013-12-24 | 2014-03-19 | 山东润谱通信工程有限公司 | Indoor wireless network fault autonomous detection and positioning method |
| CN104050254A (en) * | 2014-06-13 | 2014-09-17 | 无锡北邮感知技术产业研究院有限公司 | Method for building 3D (three dimensional) indoor feature library by using indoor data |
| CN104333906A (en) * | 2014-11-11 | 2015-02-04 | 知图（上海）信息技术有限公司 | Positioning system and method based on indoor wireless signal |
| CN106921989A (en) * | 2015-12-25 | 2017-07-04 | 中国移动通信集团北京有限公司 | A kind of communication network field strength distribution determines method and device |
| CN105472644A (en) * | 2016-01-12 | 2016-04-06 | 四川亨通网智科技有限公司 | Deep overlay network quality evaluation method and system based on user behavior characteristics |
| US20170332345A1 (en) * | 2016-02-23 | 2017-11-16 | At&T Mobility Ii Llc | User equipment assisted indoor small cell location determination |
| CN106162868A (en) * | 2016-06-08 | 2016-11-23 | 南京理工大学 | High efficiency indoor localization method based on location fingerprint |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356147A (en) * | 2018-12-05 | 2020-06-30 | 中国移动通信集团广西有限公司 | Indoor cell fault positioning method and device |
| CN111356147B (en) * | 2018-12-05 | 2023-09-08 | 中国移动通信集团广西有限公司 | Method and device for positioning faults of indoor partition cells |
| CN111491255A (en) * | 2020-03-23 | 2020-08-04 | 宜通世纪科技股份有限公司 | Backfill longitude and latitude positioning and expanding method, system and storage medium |
| CN111491255B (en) * | 2020-03-23 | 2022-10-21 | 宜通世纪科技股份有限公司 | Backfill longitude and latitude positioning and expanding method, system and storage medium |
| CN112383338A (en) * | 2020-10-21 | 2021-02-19 | 武汉虹信科技发展有限责任公司 | Room division equipment monitoring method and device |
| CN112383338B (en) * | 2020-10-21 | 2022-04-19 | 武汉虹信科技发展有限责任公司 | Room division equipment monitoring method and device |
| CN113840252A (en) * | 2021-09-30 | 2021-12-24 | 上海奥感电子科技有限公司 | Position sensing and positioning system |
| CN114040431A (en) * | 2021-10-08 | 2022-02-11 | 中国联合网络通信集团有限公司 | Network testing method, device, equipment and storage medium |
| CN114040431B (en) * | 2021-10-08 | 2023-05-26 | 中国联合网络通信集团有限公司 | Network testing method, device, equipment and storage medium |
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