CN109743734A - A kind of LTE target terminal identity information detection method - Google Patents
A kind of LTE target terminal identity information detection method Download PDFInfo
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- CN109743734A CN109743734A CN201910143553.5A CN201910143553A CN109743734A CN 109743734 A CN109743734 A CN 109743734A CN 201910143553 A CN201910143553 A CN 201910143553A CN 109743734 A CN109743734 A CN 109743734A
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Abstract
The invention discloses a kind of LTE target terminal identity information detection methods.Firstly, being based on terminal Timing Synchronization principle, absorption of the synchronous inducement signal realization to LTE terminal is sent in pseudo-base station side.Secondly, completing the pairing of target terminal cell-phone number and TMSI using silent sms technique, target terminal TMSI list is established.Finally, forcing terminal that identity information is reported to detect target terminal IMSI, IMEI information by constructing the signalings such as special TAU reject, Attach reject.This method can realize the detection for being directed to target terminal identity information under the premise of not influencing user's normal communication, filtering out non-targeted terminal.
Description
Technical field
The invention belongs to a kind of LTE target terminal identity information detection methods.
Background technique
Traditional terminal identity information detection technique is commonly called as fence technology, is one kind independently of operator and use
Family utilizes the technology of third party device detection terminal identity information.Wherein, the main identity information of terminal includes international mobile use
Family identification code (International Mobile Subscriber Identification Number, IMSI), international movement
EIC equipment identification code (International Mobile Equipment Identity, IMEI) and Temporary Mobile Subscriber Identity
(Temporary Mobile Subscriber Identity, TMSI).It can analyze record crowd specific using the technology
Activity condition in region, to achieve the purpose that track the stream of people in the region.But the technology can only be realized to complete in region
The identity information of portion's LTE network terminal detects, if we need to filter out other non-key personnel, detection part key personnel's
Identity information, such as criminal arrest activity, and conventional terminal identity information detection technique cannot achieve.So the present invention will pass
Target terminal identity mating section is added in terminal identity information detection technique of uniting, and is realized under the premise of filtering out non-targeted terminal,
Only detect target terminal identity information function.
Summary of the invention
The object of the present invention is to provide a kind of LTE target terminal identity information detection methods, can effectively realize and filter out
Under the premise of non-targeted terminal, target terminal identity information is only detected.
LTE target terminal identity information detection method of the present invention, comprising the following steps:
Step 1: target terminal downlink working frequency point number (Absolute Radio Frequency Channel is determined
Number, ARFCN), frequency point LTE cell control channels are parsed, configuration parameter required for building LTE pseudo-base station is extracted,
Including Mobile Network Code (Mobile Network Code, MNC), Mobile Country Code MCC (Mobile Country Code, MCC),
Physical area number (Physical Cell ID, PCI), tracking area code (Tracking Area Code, TAC), cell reference letter
The parameters such as number received power value；
Step 2: the system parameter obtained using step 1 builds LTE pseudo-base station as template.Then constructed in pseudo-base station
Synchronization signal, including primary synchronization signal (Primary Synchronization Signal, PSS) and secondary synchronization signal
(Secondary Synchronization Signal, SSS) issues absorption terminal access by USRP peripheral hardware；
Step 3: due to target terminal cell-phone number (MSISDN) it is known that so need by Mobile Subscriber International ISDN Number and TMSI,
IMSI, IMEI information are matched, to realize the purpose of detection target terminal identity information.This step passes through constantly to target
Terminal sends silent short message, while listening to each TMSI information frequency of occurrence of aerial Paging channel statistical, when some TMSI information
When issuing number growth with silent short message and increase, it may be determined that the information is target terminal TMSI, and target terminal can be completed
Target terminal TMSI list is added in the TMSI by the pairing of MSISDN and TMSI information；
Step 4: differentiation TAC is arranged in the TAC parameter according to obtained in step 1 in pseudo-base station, so that triggering is all
Access terminal carries out tracing section updating process, reports its TMSI information.The information is matched with TMSI list, if matching at
Function indicates that the terminal is target terminal, then to the Identity of target terminal feedback Identity type " IMSI "
Request signaling forces it to report IMSI information, realizes the pairing of MSISDN, TMSI, IMSI information, which is added mesh
Mark terminal IMSI list；
Step 5: it for matched terminal failed in step 4, is fed back to it and carries EMM cause12 " Tracking
The TAU reject signaling of Area Not Allowed " makes it exit current network and returns to public network cell；
Step 6: for the terminal of successful match, carrying EMM cause9 " UE is fed back to it immediately after obtaining its IMSI
The tracking area of identity cannot be derived by the network " is compeled with newly refusing (TAU reject) signaling
So that it is re-initiated attachment flow, report Attach request signaling, the IMSI information of target terminal is carried in the signaling,
Pseudo-base station matches the information with target terminal IMSI list, if successful match, feeds back to it and carries EMM cause2
The Attach reject signaling of " IMSI unknown in HSS ", and modify subsequent RRCConnectionRelease letter
It enables, is local GSM pseudo-base station working frequency points by redirectedCarrierInfo field configuration, instruction target terminal carries out weight
Oriented movable accesses GSM pseudo-base station.The Identity of Identity type " IMEI " is constructed in GSM pseudo-base station simultaneously
Request transmitting signaling downwards complete the pairing between MSISDN, IMSI, TMSI, IMEI information.And for failed and target terminal
The matched terminal of IMSI list, this Terminal Type belong in booting or enter the favorite outer access of the activity such as service area from non-service area
The non-targeted terminal of the terminal that pseudo-base station is adhered to feeds back it and carries EMM cause12 " Tracking Area Not
The Attach reject signaling of Allowed ".
Beneficial effect
The present invention proposes a kind of LTE target terminal identity information detection method.Firstly, being inhaled based on terminal Timing Synchronization principle
Attached LTE terminal accesses LTE pseudo-base station.Then, the pairing of target terminal MSISDN, TMSI information is realized by silent short message.Most
Eventually, the signalings such as construction TAU reject, Attach reject complete target terminal MSISDN, TMSI, IMSI and IMEI information
Pairing, thus realize filter out non-targeted terminal, only detect target terminal identity information purpose.The technology successfully compensates for biography
System fence technology cannot achieve the loophole detected for target terminal identity information, has following advantages: 1) can
Realize the detection 2 realized under the premise of not influencing user's normal communication, filtering out non-targeted terminal and be directed to target terminal identity information)
Entire detection process time delay is lower, and the detection 3 to target terminal can be realized in 2s) it can be real in user's unaware
It is existing.
Detailed description of the invention
Fig. 1 is LTE target terminal identity information detection method signaling process figure；
The position Fig. 2 EMM cause hum pattern；
Fig. 3 is target terminal IMSI, IMEI information；
Fig. 4 is OpenLTE work log；
Fig. 5 is OpenBTS work log.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
A kind of LTE target terminal identity information detection method working principle is as follows: as shown in Figure of description 1, being first
System parsing control information system information, including main message blocks (Master Information Block, MIB) and system message
Block (System Information Block 1, SIB1), builds LTE pseudo-base station by template of parameters such as MCC, MNC.Secondly,
Target terminal TMSI information is determined by silent sms technique, while constructing synchronous inducement signal and all terminals is induced to access pseudo- base
It stands, establishes target terminal TMSI list.Finally, carrying the TAU reject and Attach of correlation EMM cause by construction
Reject signaling, EMM cause information realize target terminal MSISDN, TMSI, IMSI, IMEI letter as shown in Figure of description 2
The pairing and detection of breath.This method is tested, target terminal IMSI, IMEI information are as shown in Figure of description 3, test knot
Fruit sees Figure of description 4, Figure of description 5, and this method successfully detects target terminal TMSI, IMSI, IMEI information.A kind of LTE
Detection method includes the following steps for target terminal identity information:
Step 1: target terminal downlink working frequency point number (Absolute Radio Frequency Channel is determined
Number, ARFCN), frequency point LTE cell control channels are parsed, configuration parameter required for building LTE pseudo-base station is extracted,
Including Mobile Network Code (Mobile Network Code, MNC), Mobile Country Code MCC (Mobile Country Code, MCC),
Physical area number (Physical Cell ID, PCI), tracking area code (Tracking Area Code, TAC), cell reference letter
Number receive power QrxlevmeasThe parameters such as value.GNU Radio project combination Matlab tool is utilized in this step, it is each to the region
A LTE working frequency range is scanned, and selects the highest frequency point of power as user equipment downlink working frequency points, parses the frequency point cell system
System information；
Step 2: using system parameter obtained in step 1, building LTE pseudo-base station, and synchronous letter is constructed in pseudo-base station
Number, including primary synchronization signal (Primary Synchronization Signal, PSS) and secondary synchronization signal (Secondary
Synchronization Signal, SSS), it is issued by USRP peripheral hardware and terminal is adsorbed.The generation of PSS and SSS sequence
It is highly relevant with PCI parameter obtained in step 1, wherein PCI includes parameterWithRelationship between three are as follows:
By LTE frame structure it is found that there are two PSS in a radio frames, two sequences are identical, occupy among system
62 subcarriers, PSS sequence are generated according to formula (2):
Wherein, n is subcarrier serial number, and u is root sequence index, differentThe corresponding different u values of value.
Unlike PSS sequence, containing there are two different SSS sequence in each radio frames, generation formula is indicated are as follows:
Wherein, c0(n) and c1It (n) is scrambler sequence, 0≤n≤30 index m0And m1It is worth basisValue is pushed away by following formula
Out:
It can be seen that from the above PSS, with the generating mode of SSS sequenceDetermine PSS sequence, and Jointly
Determine SSS sequence, so, the present invention in pseudo-base station by being arranged identical No. PCI induction realized to target terminal；
Step 3: due to known target terminal phone number (MSISDN), so need by Mobile Subscriber International ISDN Number and TMSI,
IMSI, IMEI information are matched, and the target terminal identity information could be correctly detected.This step is real using silent sms technique
Existing MSISDN and TMSI is matched.Silence is realized by setting 0x40 for the TP-Protocol-Identifier field of short message
SMS function.In addition, core net can be sent to it 1~3 time and carry its TMSI when carrying out voice or short message service due to mobile phone
Paging message, message plaintext transmission in the sky.So the present invention, which passes through, continuously sends silent short message to target terminal, together
When listen to each TMSI information frequency of occurrence of aerial Paging channel statistical, when some TMSI information with silent short message issue number increase
When growing and increasing, it may be determined that the TMSI information is target terminal TMSI, and target terminal MSISDN and TMSI information can be completed
Target terminal TMSI list is added in the information by pairing.The present invention is listened to using Sony terminal collocation Pilot Pioneer software
Aerial Paging message, while TMSI information is counted, mesh is established in the final pairing for realizing target terminal MSISDN and TMSI information
Mark terminal TMSI list；
Step 4: the absorption to LTE terminals whole in signal coverage areas is realized by step 2 pseudo-base station, in order to touch
It sends out terminal in pseudo- cell and reports TMSI information, the TAC parameter according to obtained in step 1 is 8970, by the parameter in pseudo-base station
360 are set as, so that the LTE terminal for triggering access pseudo-base station carries out location area updating process, while reporting its TMSI information.It will
The information is matched with TMSI list, if successful match, is indicated that the terminal is target terminal, is then fed back to the target terminal
The Identity request signaling of Identity type " IMSI " forces it to report IMSI information, realize MSISDN, TMSI,
Target terminal IMSI list is added in the information by the pairing of IMSI information；
Step 5: it for matching failed terminal in step 4, is fed back to it and carries EMM cause12 " Tracking
The TAU reject signaling of Area Not Allowed " makes it exit current network and returns to public network cell；
Step 6: for the terminal of successful match, carrying EMM cause9 " UE is fed back to it immediately after obtaining its IMSI
The tracking area of identity cannot be derived by the network " is compeled with newly refusing (TAU reject) signaling
So that it is re-initiated attachment flow, reports Attach request signaling, the IMSI information of target terminal is carried in the signaling.
Pseudo-base station detects the IMSI and is matched with target terminal IMSI list, if successful match, feeds back to it and carries EMM
The Attach reject signaling of cause2 " IMSI unknown in HSS ", and modify then
RedirectedCarrierInfo field is set local GSM pseudo-base station work frequency by RRCConnectionRelease signaling
Point, instruction target terminal redirect activity access GSM pseudo-base station.Identity is constructed in GSM pseudo-base station simultaneously
The Identity request transmitting signaling downwards of type " IMEI " complete the pairing of MSISDN, IMSI, TMSI, IMEI information.And it is right
In with the matched terminal of target terminal IMSI list, this Terminal Type, which belongs to, to be switched on or entering service from non-service area not successfully
The non-targeted terminal of terminal that the favorite outer access pseudo-base station of the activity such as area is adhered to, feeds back it and carries EMM cause12
The Attach reject signaling of " Tracking Area Not Allowed ".
Claims (3)
1. a kind of LTE target terminal identity information detection method, which is characterized in that comprise the steps of:
Step 1: target terminal downlink working frequency point number (Absolute Radio Frequency Channel is determined
Number, ARFCN), frequency point LTE cell control channels are parsed, configuration parameter required for building LTE pseudo-base station is extracted,
Including Mobile Network Code (Mobile Network Code, MNC), Mobile Country Code MCC (Mobile Country Code, MCC),
Physical area number (Physical Cell ID, PCI), tracking area code (Tracking Area Code, TAC), cell reference letter
The parameters such as number received power value；
Step 2: the system parameter obtained using step 1 builds LTE pseudo-base station as template.It then constructs and synchronizes in pseudo-base station
Signal, including primary synchronization signal (Primary Synchronization Signal, PSS) and secondary synchronization signal
(Secondary Synchronization Signal, SSS) issues absorption terminal access by USRP peripheral hardware；
Step 3: due to target terminal cell-phone number (MSISDN) it is known that so need by Mobile Subscriber International ISDN Number and TMSI, IMSI,
IMEI information is matched, to realize the purpose of detection target terminal identity information.This step passes through constantly to target terminal
Silent short message is sent, while listening to each TMSI information frequency of occurrence of aerial Paging channel statistical, when some TMSI information is with quiet
When silent short message issues number growth and increases, it may be determined that the information is target terminal TMSI, and target terminal MSISDN can be completed
With the pairing of TMSI information, which is added target terminal TMSI list；
Step 4: differentiation TAC is arranged, to trigger all accesses in the TAC parameter according to obtained in step 1 in pseudo-base station
Terminal carries out tracing section updating process, reports its TMSI information.The information is matched with TMSI list, if successful match,
Indicate that the terminal is target terminal, then to the Identity request of target terminal feedback Identity type " IMSI "
Signaling forces it to report IMSI information, realizes the pairing of MSISDN, TMSI, IMSI information, which is added target terminal
IMSI list；
Step 5: it for matched terminal failed in step 4, is fed back to it and carries EMM cause12 " Tracking Area
The TAU reject signaling of Not Allowed " makes it exit current network and returns to public network cell；
Step 6: for the terminal of successful match, carrying EMM cause9 " UE is fed back to it immediately after obtaining its IMSI
The tracking area of identity cannot be derived by the network " is compeled with newly refusing (TAU reject) signaling
So that it is re-initiated attachment flow, report Attach request signaling, the IMSI information of target terminal is carried in the signaling,
Pseudo-base station matches the information with target terminal IMSI list, if successful match, feeds back to it and carries EMM cause2
The Attach reject signaling of " IMSI unknown in HSS ", and modify subsequent RRCConnectionRelease letter
It enables, is local GSM pseudo-base station working frequency points by redirectedCarrierInfo field configuration, instruction target terminal carries out weight
Oriented movable accesses GSM pseudo-base station.The Identity of Identity type " IMEI " is constructed in GSM pseudo-base station simultaneously
Request transmitting signaling downwards complete the pairing between MSISDN, IMSI, TMSI, IMEI information.And for failed and target terminal
The matched terminal of IMSI list, this Terminal Type belong in booting or enter the favorite outer access of the activity such as service area from non-service area
The non-targeted terminal of the terminal that pseudo-base station is adhered to feeds back it and carries EMM cause12 " Tracking Area Not
The Attach reject signaling of Allowed ".
2. a kind of LTE target terminal identity information detection method according to claim 1, which is characterized in that the step
Rapid four the following steps are included:
The absorption to LTE terminals whole in signal coverage areas is realized by step 2 pseudo-base station.In order to trigger in pseudo- cell
Terminal reports TMSI information, and the TAC parameter according to obtained in step 1 is 8970, sets 360 for the parameter in pseudo-base station,
Location area updating process is carried out to trigger the LTE terminal of access pseudo-base station, while reporting its TMSI information.By the information and mesh
Mark terminal TMSI list is matched, if successful match, is indicated that the terminal is target terminal, is then fed back to the target terminal
The Identity request signaling of Identity type " IMSI " forces it to report IMSI information, realize MSISDN, TMSI,
The pairing of IMSI information, while establishing target terminal IMSI list.
3. a kind of LTE target terminal identity information detection method according to claim 1, which is characterized in that the step
Rapid six the following steps are included:
For the terminal in step 5 successful match, it is fed back and carries EMM cause9 " UE identity cannot be
The tracking area of derived by the network " forces it to re-initiate attachment stream with newly refusing (TAU reject) signaling
Journey reports Attach request signaling, the IMSI information of target terminal is carried in the signaling.Pseudo-base station extract the information with
Target terminal IMSI list is matched, if successful match, is fed back to it and is carried EMM cause2 " IMSI unknown in
The Attach reject signaling of HSS ", and subsequent RRCConnectionRelease signaling is modified, it will
RedirectedCarrierInfo field is set as local GSM pseudo-base station working frequency points, and instruction target terminal redirects work
Dynamic access GSM pseudo-base station.The Identity request letter of Identity type " IMEI " is constructed in GSM pseudo-base station simultaneously
Order issues, and completes the pairing between MSISDN, IMSI, TMSI, IMEI information.And for not successfully with target terminal IMSI list
The terminal matched, this Terminal Type belong in booting or enter the favorite outer access pseudo-base station progress of the activity such as service area from non-service area
The non-targeted terminal of the terminal of attachment feeds back it and carries EMM cause12 " Tracking Area Not Allowed's "
Attach reject signaling.
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| CN111818512A (en) * | 2020-06-29 | 2020-10-23 | 武汉虹旭信息技术有限责任公司 | Mobile terminal identity recognition method and system |
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