CN104735648B - A kind of pseudo-base station interference analysis and monitoring method and device - Google Patents
A kind of pseudo-base station interference analysis and monitoring method and device Download PDFInfo
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- CN104735648B CN104735648B CN201310717928.7A CN201310717928A CN104735648B CN 104735648 B CN104735648 B CN 104735648B CN 201310717928 A CN201310717928 A CN 201310717928A CN 104735648 B CN104735648 B CN 104735648B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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Abstract
The invention discloses a kind of pseudo-base station interference analysis and monitoring method and devices, and the location updating situation in each position area is now netted according to source position area statistics, filters out the Location Area Code LAC in abnormal position area；It is more than the Location Area Code LAC of the first pre-determined number labeled as source LACx that per period will be counted in the Location Area Code LAC filtered out；The Location Area Code LAC for counting source position area in existing net successful location update message is source LACx, and every slot position updates the region that doubtful pseudo-base station note system is labeled as more than the position area of the second pre-determined number；Pseudo-base station interference analysis and monitoring are carried out according to the region of the doubtful pseudo-base station note system marked.The present invention compensates for prior art pseudo-base station and checks passive means, backwardness, the disadvantage of accuracy and real-time difference.
Description
Technical field
The present invention relates to wireless traffic technical field, especially a kind of pseudo-base station interferes analysis and monitoring method and device.
Background technique
Pseudo-base station is a set of independent network system, by utilizing its signal strength, position to the counterfeit of mobile communications network
The parameter settings such as area are set, user is made to automatically access pseudo-base station in its overlay area, obtain IMSI in user position update message
With the information such as IMEI, pseudo-base station by refusal location updating or can change the modes such as itself LAC and make hand after obtaining user information
Existing net cell is returned in machine terminal gravity treatment.Currently, criminal not only utilizes pseudo-base station to collect user information, pseudo-base station malice is also utilized
Waste advertisements short message is sent, when user will enter pseudo-base station overlay area, user's meeting location updating success under pseudo-base station, so
Afterwards pseudo-base station give user send refuse messages, user receive short message success after, can be changed by pseudo-base station itself LAC make mobile phone and
Pseudo-base station suspension is registered to normal mobile network.Fig. 1 is to obtain user position update information pseudo-base station work flow diagram；Fig. 2
To send refuse messages pseudo-base station work flow diagram.
In general, no matter which kind of pseudo-base station, there is following characteristics.
1) cell selection parameters and reselecting parameters are all very extreme, show that cell access parameters C1 and CRO are arranged very
Greatly, cause cell reselection priority high, guarantee all users by near pseudo-base station can gravity treatment enter the system, reach
It collects user information or sends the purpose of refuse messages.
2) the coverage area distance of pseudo-base station is smaller, and user initiates after registering failure to pseudo-base station, due to cell weight
It selects magnetic hysteresis setting and deviant smaller, net network can be showed in shorter time switchback.There are same user the same cell of existing net,
Continuous position more news in short time, General Influence range is at 100 meters or so.
3) frequency point setting is the BCCH frequency point for moving about base station, is measured with reaching from adjacent cell by adjacent area frequency point,
Achieve the purpose that be selected into pseudo-base station system.
4) when nearby base station BCCH changes, oneself frequency point and neighbouring base station BCCH can be modified automatically over time
The same frequency point (it may be people be actively to modify, after finding no user access, artificial scene setting frequency point).
5) LAC with mobile network of pseudo-base station are now netted different, and to reach user into after the system, trigger position is more
Newly, to achieve the purpose that obtain mobile phone report of user information
6) pseudo-base station only uses GSM900M frequency range at present, and 1800M frequency range is not used.
For the phenomenon, existing technology only passes through customer complaint, then on-the-spot test, is occupied according to testing mobile phone
Cell information (LACCI) is confirmed whether it is the case where resulting in customer complaint due to pseudo-base station.
On the other hand, the feature strong due to the concealment of pseudo-base station, mobility, often after positioning pseudo-base station position, just
It can there is a situation where pseudo-base stations to disappear, it is more difficult to which the position for controlling pseudo-base station in real time causes not existing net index and customer complaint
The influence of benefit.
Existing pseudo-base station monitoring technology has following defects that
Real-time is poor: after often there is customer complaint, can just discriminate whether to be as caused by pseudo-base station to on-the-spot test
Complain situation；
Pseudo-base station concealment, mobility are strong: pseudo-base station uses small plate antenna, yagi aerial or vehicle-mounted ceiling at present
Antenna, pseudo-base station can be placed in hotel room, in windowsill or even on car, and concealment is extremely strong, does not pass through dedicated frequency sweep
Instrument, directional aerial, it is difficult to pseudo-base station position is found, and dedicated instrument price is high, it can not crew's outfit；
Pseudo-base station cell information constantly changes: pseudo-base station, can be by laptop, arbitrarily according to peripheral cell information
The cell informations such as LAC, CI, BCCH, BSIC, CRO of cell are changed, although located pseudo-base station position, pseudo-base station can also lead to
The cell parameter for changing itself is crossed, achieve the purpose that evade the Radio Management Commission's on-site law-enforcing and is banned.
Summary of the invention
In consideration of it, in order to make up, prior art pseudo-base station investigation means are passive, fall behind, accuracy and real-time are poor is lacked
Point, the present invention provide a kind of pseudo-base station interference analysis and monitoring method and device.
Pseudo-base station interference analysis of the invention and monitoring method, comprising steps of
The location updating situation that each position area is now netted according to source position area statistics, filters out the position area in abnormal position area
Code LAC；
Every slot position will be counted in the Location Area Code LAC filtered out to update more than described in the first pre-determined number
Location Area Code LAC is labeled as source LACx；
Statistics shows the Location Area Code LAC in source position area in net successful location update message for source LACx, and every slot position
Update the region that doubtful pseudo-base station note system is labeled as more than the position area of the second pre-determined number；
Pseudo-base station interference analysis and monitoring are carried out according to the region of the doubtful pseudo-base station note system marked.
Pseudo-base station interference analysis of the invention and monitoring device, comprising:
Screening module filters out exception for now netting the location updating situation in each position area according to source position area statistics
The Location Area Code LAC in position area；
Mark module is updated for will count every slot position in the Location Area Code LAC filtered out more than first
The Location Area Code LAC of pre-determined number is labeled as source LACx；And count source position area in existing net successful location update message
Location Area Code LAC be source LACx, and every slot position update be more than the position area of the second pre-determined number labeled as it is doubtful puppet base
It stands the region of note system；
Analysis and monitoring modular, for carrying out pseudo-base station interference according to the region of the doubtful pseudo-base station note system marked
Analysis and monitoring.
The present invention has accomplished to make an initiative sally, and prevents trouble before it happens, and avoids the appearance of pernicious complaint and batch refuse messages.Simultaneously
Any extras and fund are not needed, directly using signaling instrument, the sweep generator now netted, relevant positioning investigation work can be completed
Make, economic benefit is higher.
Detailed description of the invention
Fig. 1 is that the prior art obtains user position update information pseudo-base station work flow diagram；
Fig. 2 is that the prior art sends refuse messages pseudo-base station work flow diagram；
Fig. 3 is pseudo-base station interference analysis and monitoring method flow chart in the embodiment of the present invention；
Fig. 4 is the connection figure of the BSC and base station and MSC in the embodiment of the present invention；
Fig. 5 is pseudo-base station interference analysis and monitoring device logic diagram in the embodiment of the present invention.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
Pseudo-base station is broadly divided into two kinds at present, and a kind of pseudo-base station only obtains the IMSI information of user, another, passes through pressure
After user carries out location updating, refuse messages or illegal short message are sent to user, plays the mesh of advertising, reaction publicity
's.This kind of pseudo-base station belongs to illegal erection, for sending refuse messages, has and installs hidden, the strong feature of mobility.
According to the big work characteristics of pseudo-base station two, 1, using abnormal LAC, 2 by high C1 and CRO setting lure into mobile phone terminal into
Row location updating, therefore the substantially distributed areas of pseudo-base station can be found from monitoring signaling, and most by on-the-spot test investigation
Pseudo-base station position is determined eventually.Pseudo-base station interference analysis of the present invention and monitoring method, as shown in figure 3, uniting first, in accordance with source position area
Meter now nets the location updating situation in each position area, filters out the Location Area Code LAC (S301) in abnormal position area；Then it will be sieved
It is more than the Location Area Code LAC of the first pre-determined number labeled as source that per period is counted in the Location Area Code LAC selected
LACx (S302), wherein the definition of per period is a natural hour；It is hereinafter all be related to " per period " definition be phase
Same meaning；Then, statistics shows the Location Area Code LAC in source position area in net successful location update message for source LACx, and per period
Location updating is more than that the position area of the second pre-determined number is labeled as the region (S303) of doubtful pseudo-base station note system；Last basis
The region of the doubtful pseudo-base station note system marked carries out pseudo-base station interference analysis and monitoring (S304).
As one embodiment, can by exclude existing net position area LAC and adjacent districts and cities borderline region position
Area LAC is set, the Location Area Code LAC in abnormal position area is filtered out
LAC (location area code Location Area Code) is a region being arranged for paging, covers a piece of geography
Region, initial stage generally press administrative division (area Huo Yige of a county), divide by paging amount.In order to determine the position of mobile station
It sets, the area of coverage of each GSMPLMN is divided into many position areas, and Location Area Code (LAC) is then for identifying different positions
Area.
When mobile station is moved to another position area by position area, it is necessary to it is registered in new position area,
That is once mobile station needs or is found for certain LAI in its memory and receives No. LAl generation of current area
Variation, must just notify the network to change the location information for the mobile station that it is stored.This process is exactly location updating.
The setting according to the definition of LAC and now netted is it is found that the region that the LAC now netted is covered is continuous, the area Ji Yige
The LAC that base station in domain uses is identical.LAC planning for each region, there is stringent definition in operation commercial city, and pseudo-base station is adopted
With the LAC different from peripheral base station, reaching makes mobile phone carry out location updating, reaches acquisition user information, or send rubbish
The purpose of short message.
Signaling checks mainly by using special instrument, collecting each cell in the A of base station controller BSC mouth at present
Location updating situation.BSC is the tie point between base stations in mobile communication system sending and receiving stations and mobile switching centre, is also base
It stands and information offer interface is provided between sending and receiving stations (BTS) and mobile switching centre (MSC).One base station controller usually controls several
A base transceiver station, major function are to carry out wireless channel management, implement calling and the foundation and dismounting of communication link, and being
The handover of mobile station is controlled in this control zone.Connection figure such as Fig. 4 of BSC and base station and MSC.Pass through the receipts of signaling
Collection, location updating quantity and the last cell that can find each mobile base station are No. LAC corresponding.
As one embodiment, first pre-determined number is 200 times.
As one embodiment, second pre-determined number is 20 times.
Frequent location updating caused by abnormal IMEI is excluded in step S303 statistics.General normal device terminal has one
A unique legitimate device string number is registered in interchanger HLR and VLR, and in position updating process, HLR and VLR can join
It is not met with the comparison and identification work for carrying out IMEI number, such as the setting rule of the IMEI number with what network side defined, then it is assumed that
The IMEI number is illegal IMEI or exception IMEI.
As one embodiment, can be aggregated according to the region and date of source LACx and doubtful pseudo-base station note system
Table, and each statistical time range location updating full edition of corresponding LACx to LACy-CIy is enclosed, in case on-the-spot test confirms.
It is clear by on-the-spot test using dedicated testing mobile phone, sweep generator and yagi aerial as one embodiment
The specific infield of pseudo-base station simultaneously reports in time.Step includes:
The test of mobile phone idle mode is carried out in the regional location of the doubtful pseudo-base station note system；
When handset-selected base station corresponding to the source LACx, LAC-CI, BCCH, BSIC information of the base station are recorded.
If capableing of direct visual finding pseudo-base station, records pseudo-base station longitude and latitude and take pictures.
General mobile operator has divided the LAC value of particular sequence number to specific region, in the area, owns
The LAC of base station should be identical LAC, and due to that can not obtain the LAC number inside mobile operator, pseudo-base station is usually using existing net
The LAC value that never uses meets the needs of location updating.By screening the LAC value unrelated with now netting, pseudo-base station can be obtained
LAC information.
When pseudo-base station installation is more hidden, the BCCH frequency point is locked using sweep generator equipment and carries out frequency sweep, according to letter
Number Strength Changes check pseudo-base station installation site.If desired, can be by closing or adjusting the neighbouring co-frequency cell BCCH in periphery
Frequency point, convenient for detection pseudo-base station position.
According to confirmation as a result, the security systems such as public security system in this way are related to pseudo-base station and should reduce it by reasonably optimizing means
It influences, illegal pseudo-base station equipment, should report and solve in time in this way.
The present invention compensates for existing pseudo-base station and checks passive means, backwardness, the disadvantage of accuracy and real-time difference, by rear
The collection of platform A interface signaling is aided with the confirmation of wireless area location updating COUNTER index, can position the specific of pseudo-base station
Position, while by the scene confirmation of sweep generator, directional aerial, the specific address information of pseudo-base station may finally be navigated to.
The technology has accomplished to make an initiative sally, and prevents trouble before it happens, and avoids the appearance of pernicious complaint and batch refuse messages.Simultaneously
Any extras and fund are not needed, directly using signaling instrument, the sweep generator now netted, relevant positioning investigation work can be completed
Make, economic benefit is higher.
The embodiments of the present invention also provide corresponding pseudo-base station interference analysis and monitoring device, such as Fig. 5, comprising:
Screening module filters out exception for now netting the location updating situation in each position area according to source position area statistics
The Location Area Code LAC in position area；
Mark module, for being more than the first pre-determined number by per period is counted in the Location Area Code LAC filtered out
The Location Area Code LAC be labeled as source LACx；And count the position area in source position area in existing net successful location update message
Code LAC is source LACx, and every slot position updates and is labeled as doubtful pseudo-base station note system more than the position area of the second pre-determined number
The region of system；
Analysis and monitoring modular, for carrying out pseudo-base station interference according to the region of the doubtful pseudo-base station note system marked
Analysis and monitoring.
As one embodiment, screening module now nets the position in each position area more by collecting statistics using A message
New situation.
As one embodiment, first pre-determined number is 200 times.
As one embodiment, second pre-determined number is 20 times.
As one embodiment, excluded in the location updating situation in each position area of the existing net of the screening module from statistics
Now net position area LAC and adjacent districts and cities borderline region position area LAC.
As one embodiment, it is described analysis and monitoring modular the doubtful pseudo-base station note system regional location into
The test of row mobile phone idle mode；When the handset-selected corresponding base station to the source LACx, record the base station LAC-CI,
BCCH, BSIC information.
As one embodiment, the analysis and monitoring modular are also used to lock the BCCH frequency point by sweep generator equipment
Frequency sweep is carried out, pseudo-base station installation site is checked according to change in signal strength.
It is noted that above embodiments are only to illustrate the present invention rather than limit, the present invention is also not limited to above-mentioned
Citing, all do not depart from the technical solution and its improvement of the spirit and scope of the present invention, should all cover in right of the invention
In claimed range.
Claims (14)
1. a kind of pseudo-base station interference analysis and monitoring method, which is characterized in that comprising steps of
The location updating situation that each position area is now netted according to source position area statistics, filters out the Location Area Code in abnormal position area
LAC；
The position of every slot position update more than the first pre-determined number will be counted in the Location Area Code LAC filtered out
Area code LAC is labeled as source LACx；
The Location Area Code LAC for counting source position area in existing net successful location update message is source LACx, and every slot position updates
More than the region that the position area of the second pre-determined number is labeled as doubtful pseudo-base station note system；
Pseudo-base station interference analysis and monitoring are carried out according to the region of the doubtful pseudo-base station note system marked.
2. the method according to claim 1, wherein now netting each position by collecting statistics using A message
The location updating situation in area.
3. the method according to claim 1, wherein first pre-determined number is 200 times.
4. the method according to claim 1, wherein second pre-determined number is 20 times.
5. the method according to claim 1, wherein the step of filtering out the Location Area Code LAC in abnormal position area
Include:
Exclude from the location updating situation in each position area of existing net of statistics existing net position area LAC and adjacent districts and cities
Borderline region position area LAC.
6. the method according to claim 1, wherein described according to the doubtful pseudo-base station note system marked
Region carries out pseudo-base station interference analysis and includes: the step of monitoring
The test of mobile phone idle mode is carried out in the regional location of the doubtful pseudo-base station note system；
When handset-selected base station corresponding to the source LACx, LAC-CI, BCCH, BSIC information of the base station are recorded.
7. according to the method described in claim 6, it is characterized in that, described according to the doubtful pseudo-base station note system marked
Region carries out the step of pseudo-base station interference analysis and monitoring further include:
The BCCH frequency point is locked using sweep generator equipment and carries out frequency sweep, pseudo-base station installation position is checked according to change in signal strength
It sets.
8. a kind of pseudo-base station interference analysis and monitoring device characterized by comprising
Screening module filters out abnormal position for now netting the location updating situation in each position area according to source position area statistics
The Location Area Code LAC in area；
Mark module makes a reservation for for will count every slot position in the Location Area Code LAC filtered out and update more than first
The Location Area Code LAC of number is labeled as source LACx；And count the position in source position area in existing net successful location update message
Setting area code LAC is source LACx, and the update of every slot position is short labeled as doubtful pseudo-base station more than the position area of the second pre-determined number
The region of letter system；
Analysis and monitoring modular, for carrying out pseudo-base station interference analysis according to the region of the doubtful pseudo-base station note system marked
And monitoring.
9. device according to claim 8, which is characterized in that now net each position by collecting statistics using A message
The location updating situation in area.
10. device according to claim 8, which is characterized in that first pre-determined number is 200 times.
11. device according to claim 8, which is characterized in that second pre-determined number is 20 times.
12. device according to claim 8, which is characterized in that each position area of the existing net of the screening module from statistics
Location updating situation in exclude existing net position area LAC and adjacent districts and cities borderline region position area LAC.
13. device according to claim 8, which is characterized in that the analysis and monitoring modular are in the doubtful pseudo-base station
The regional location of note system carries out the test of mobile phone idle mode；When handset-selected base station corresponding to the source LACx, note
Record LAC-CI, BCCH, BSIC information of the base station.
14. device according to claim 13, which is characterized in that the analysis and monitoring modular are also used to pass through sweep generator
Equipment locks the BCCH frequency point and carries out frequency sweep, checks pseudo-base station installation site according to change in signal strength.
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| CN105873057B (en) * | 2016-05-25 | 2020-06-16 | 深圳智空未来信息技术有限公司 | Pseudo base station protection method and system |
| US9872237B1 (en) * | 2016-08-01 | 2018-01-16 | Futurewei Technologies, Inc. | Response mechanism for detection of a faked base station |
| CN106060829B (en) * | 2016-08-08 | 2019-11-08 | 努比亚技术有限公司 | A kind of pseudo-base station identification device and method |
| CN106686562A (en) * | 2016-11-29 | 2017-05-17 | 中国移动通信集团江苏有限公司 | Method for processing links in short messages sent by pseudo base station, device and server |
| CN108243421B (en) * | 2016-12-26 | 2020-12-15 | 中国移动通信集团山东有限公司 | Pseudo base station identification method and system |
| CN107567030B (en) * | 2017-10-19 | 2020-10-23 | 中国电信股份有限公司南京分公司 | Method and system for checking and avoiding pseudo base station interference |
| CN109257762B (en) * | 2018-09-12 | 2021-06-18 | 南方电网科学研究院有限责任公司 | Power distribution and utilization terminal illegal wireless communication link detection method based on wireless signal intensity density cluster analysis |
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| JP2006071389A (en) * | 2004-09-01 | 2006-03-16 | Nec Saitama Ltd | Moving communication system, portable terminal device, portable terminal position measuring method used therefor and its program |
| CN102625351A (en) * | 2012-02-28 | 2012-08-01 | 北京拓明科技有限公司 | Location method of simulation base station based on A interface signal |
| CN102843714B (en) * | 2012-09-25 | 2015-02-25 | 公安部第三研究所 | Method for confirming GSM (global system for mobile communications) base station simulator according to wireless parameters |
| CN203136176U (en) * | 2013-03-08 | 2013-08-14 | 武汉中软通科技有限公司 | Mobile phone monitor based on cellular communication protocol |
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