CN107465668A - A kind of GSM mobile handset speech monitoring method - Google Patents
A kind of GSM mobile handset speech monitoring method Download PDFInfo
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- CN107465668A CN107465668A CN201710582296.6A CN201710582296A CN107465668A CN 107465668 A CN107465668 A CN 107465668A CN 201710582296 A CN201710582296 A CN 201710582296A CN 107465668 A CN107465668 A CN 107465668A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/30—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/30—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information
- H04L63/302—Network architectures or network communication protocols for network security for supporting lawful interception, monitoring or retaining of communications or communication related information gathering intelligence information for situation awareness or reconnaissance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0078—Security; Fraud detection; Fraud prevention
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/65—Telephone numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/654—International mobile subscriber identity [IMSI] numbers
Abstract
The invention discloses a kind of GSM mobile handset speech monitoring method, comprise the following steps：Step 1, data of being eated dishes without rice or wine to each frequencies of GSM are acquired and handled, search and synchronous multiple GSM cells；Step 2, monitoring control channel, signaling message is detected, therefrom obtain mobile identification number, encryption mode, opposite-terminal number, Traffic Channel parameter, channel and cell handoff parameter, channel release indicates；Step 3, monitoring service channel obtain voice content.The present invention can realize carries out independent audio monitoring to the specific objective mobile phone in the range of multiple GSM cells around, can also realize and carry out general listen to all mobile phones in the range of multiple GSM cells around.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of GSM mobile handset speech monitoring method.
Background technology
Global system for mobile communications GSM (Global System for Mobile Communications) is currently should
With most commonly used mobile communication standard.GSM phones are used more than 1,000,000,000 people in global more than 200 countries and regions.
GSM logic channel is divided into Traffic Channel TCH (Traffic Channel) and control channel CCH (Control
Channel), Traffic Channel is used to transmit the voice or data message after coding, and control channel is used to transmit control information.Control
Channel is divided into broadcast channel, CCCH and DCCH, and wherein broadcast channel includes frequency correction channel FCCH
(Frequency Correction Channel), synchronous channel SCH (Synchronization Channel) and Broadcasting Control
BCCH channel (Broadcast Control Channel).Without frequency hopping, the descending BCCH for being fixed on base station is carried broadcast channel
0 time slot of frequency is sent.Gsm system generally use three-level Synchronization Design, terminal by capturing FCCH, SCH, BCCH channel successively,
The down-going synchronous with base station is completed, the cell is successfully resident, obtains accurate frequency and temporal information and terminal in the free time
System information required under pattern.
Domestic GSM base stations largely all use temporary mobile subscriber identity TMSI (Temporary Mobile
Subscriber Identity) user's mark when being communicated as user.International mobile subscriber identity is replaced using TMSI
IMSI (International Mobile Subscriber Identity) is the confidentiality for strengthening system, is prevented illegal
Personal or group steals IMSI by the signaling on monitoring wireless communication network or tracks the position of user.
In the patent application CN1738261A (number of patent applications of Huawei Tech Co., Ltd disclosed in August in 2004 18 days：
200410056185.4) a kind of speech monitoring method and system are disclosed, the voice communication fortune for solving internet protocol-based
The problem of line efficiency is low and is available for the voice pathway of monitoring few.The limitation of the patent is just for internet protocol-based
Voice communication (VOIP) is monitored.
In patent application CN101478771A (the patent Shens of ZTE Co., Ltd disclosed in 6 days January in 2009
Please number：200910104907.1) a kind of system of audio monitoring and the method for audio monitoring are disclosed, is efficiently solved pair
The monitored network element that TDM modes work realizes that IP modes monitor problem, realizes and IP and TDM voices are monitored jointly, extend
The use range of legal monitor centers.The limitation of the patent is simply to monitor in core net.
In the patent CN201123090Y (patent applications of ZTE Co., Ltd disclosed in 22 days November in 2007
Number：200720305218.3) disclose a kind of system for monitoring another mobile phone with a mobile phone, realize monitor mobile phone or
The function of sound near mobile phone.The limitation of the patent is that needs install control device on monitored mobile phone, and can not be to certain
All mobile phones of individual section are monitored.
The content of the invention
To solve to provide a kind of GSM hands in the real-time technical problem for monitoring GSM standard mobile phone speech contents of eating dishes without rice or wine, the present invention
Machine speech monitoring method, can be to around the voice of mobile phone is monitored in real time in multiple GSM cells.
The present invention is adopted the following technical scheme that to realize：A kind of GSM mobile handset speech monitoring method, comprises the following steps：
Step 1, data of being eated dishes without rice or wine to each frequencies of GSM are acquired and handled, search and synchronous multiple GSM cells；
Step 2, monitoring control channel, signaling message is detected, therefrom obtain mobile identification number, encryption mode, opposite end
Number, Traffic Channel parameter, channel and cell handoff parameter, channel release instruction；
Step 3, monitoring service channel obtain voice content.
Preferably, step 2 includes：
Step 21, the descending access grant channel of each synchronous GSM cell is monitored, when detecting assignment message immediately
When, first check for asking establishing reason in reference field, be transferred to if reason is established to respond paging or initiation audio call
Step 22, subsequent treatment is not otherwise made to assignment message immediately；
Step 22, parsing the channel description field in assignment message immediately, the control channel parameter of distribution is obtained, monitored point
The uplink/downlink control channel matched somebody with somebody；Page-response message or business request information are monitored by control channel, corresponding open is called
Letter flow journey or calling communication flow, mobile identification number is included in message；Encryption mode instruction message is monitored, judges communication stream
Whether the data of journey are encrypted with signaling and used cipher mode；Message is established in monitoring, to obtain Correspondent Node number；Monitor
Instruction message or handover command messages are distributed, to obtain Traffic Channel parameter or channel and cell handoff parameter；Monitor channel is released
Message is put, to determine to terminate the monitoring of this voice communication.
Preferably, step 3 includes：
Step 31, traffic channel types and parameter according to distribution, voice is monitored in up-downgoing respectively, obtains raw tone
Data；
Step 32, according to the cipher mode obtained in step 22, when communication process is encrypted, according to different cipher modes
Corresponding decipherment algorithm is selected to carry out data deciphering to primary voice data；
Step 33, there is different tone decoding algorithms according to different business channel type, using corresponding algorithm to original
Speech data carry out tone decoding, obtain can normal play speech data；Speech data is played in real time, by voice number
According to preserving into voice document；
Step 34 at the same continue monitor Fast Associated Control Channel, obtain control signaling；
Step 35, parsing control signaling, tracking mobile phone channel switching, when detecting handover command messages, according to configuration
Cell will be monitored and be switched to new cell, monitor channel is switched to new Traffic Channel.
Preferably, between step 2 and step 3, in addition to：
Step 2 ', complete the monitoring of control channel after, the extracted mobile identification number of record, if desired monitor specific
Target, then the mobile identification number of target mobile phones is obtained, judges certain communication process by comparing mobile identification number
Whether target mobile phones are belonged to.Step 2 ' include：
Step 2 ' 1, when target mobile phones be resident cell when in the range of synchronous GSM cell, utilize a caller mobile phone
Call targets mobile phone；
Step 2 ' 2, the ascending control channel for monitoring each synchronous GSM cell, when detecting page-response message, from
Mobile identification number information is obtained in page-response message；Monitor down control channel, when detect base station to mobile phone page
When replying message of response, middle acquisition mobile identification number information is replied message to mobile phone page response from base station；
Step 2 ' 3, down control channel is monitored, according to the cipher mode obtained in step 22, if communication network unencryption,
And when searching the relevant information of caller handset call target mobile phones, it is determined that the mobile identification number information obtained is target hand
The mobile identification number of machine；When communication network is encrypted, it is necessary to repeatedly call, and count each mobile identification number information and go out
Existing number, after the number of some mobile identification number information record reaches default decision threshold, it is determined as target mobile phones
Mobile identification number；
There is the channel distributed during calling and called communication process in step 2 ' 4, the GSM cell for monitoring synchronization, are sought when detecting
Response, the replying message of page-response message, business request information or when replying message of business request information are exhaled, extracts message
In mobile identification number be compared with the mobile identification number of target mobile phones, if identical, show that this time communicated
Journey belongs to target mobile phones；
Step 2 ' 5, continue to monitor down control channel, if detecting distribution instruction message or handover command messages and message
In have the distribution of Traffic Channel, then start to monitor voice in Traffic Channel；Otherwise, it is not voice communication to judge this communication, is returned
To step 2.
The present invention has following beneficial effect：It can realize to the specific objective mobile phone in the range of multiple GSM cells around
Independent audio monitoring is carried out, can also realize and general listen is carried out to all mobile phones in the range of multiple GSM cells around；It can be applied to warn
The voice that side is monitored in the mobile phone of criminal, or one panel region of monitoring therefrom collects clue, and evidence is provided for case investigation.
Brief description of the drawings
Fig. 1 is the process chart of the inventive method.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
Embodiment 1
The present embodiment is individually monitored specific objective mobile phone, as follows referring to Fig. 1, step：
S101, data of being eated dishes without rice or wine to each frequencies of GSM are acquired and handled, multiple GSM cells near search and synchronization.
The data of eating dishes without rice or wine of each frequencies of GSM are gathered, the data of collection are divided into by some according to GSM frequencies sum, profit
With polycaryon processor parallel processing, each core handles the cell searching task in a part of frequency point ranges, captured successively respectively
FCCH, SCH, BCCH channel, the down-going synchronous of each frequency point cell is completed, obtain cell system information, realize that the multiple GSM of surrounding are small
Area searching and synchronization.
S102, monitoring control channel, signaling message is detected, therefrom obtain mobile identification number, encryption mode, opposite end number
Code, Traffic Channel parameter, channel and cell handoff parameter, channel release instruction.
S1021, monitor descending access grant channel AGCH (the Access Grant of each synchronous GSM cell
Channel), when detecting assignment message immediately, request is first checked for reference to building in (Request Reference) field
Vertical reason (Establishment Cause), due to being to monitor voice flow, therefore the reason of establishing of its Stochastic accessing should be back
(Answer to Paging) should be paged or initiate audio call (Originating speech call), for establishing reason
Do not make subsequent treatment for the assignment message immediately of other situations.
S1022, the channel parsed in assignment message immediately describe (Channel Description) field, obtain distribution
Control channel parameter, monitor the uplink/downlink control channel of distribution.By control channel can listen to page-response message or
Business request information, it is corresponding to open called communication process or calling communication flow, include mobile identification number in message；In addition
Encryption mode instruction message can be listened to, by it is judged that whether the data of communication process encrypt with signaling, and it is used
Cipher mode；It may also listen for establishing message, wherein including Correspondent Node number；May also listen for distribute instruction message or
Handover command messages, to obtain Traffic Channel parameter or channel and cell handoff parameter；Channel release message is may also listen for,
It may decide that the monitoring for terminating current voice communication.Monitoring uplink/downlink control channel is specially：
By monitoring ascending control channel, page-response message can be obtained, instruction is followed by called communication process, message
In include mobile identification number；Business request information can be obtained, instruction is followed by calling communication flow, shifting is included in message
Dynamic CUSTOMER ID.
By monitoring down control channel, replying message for the page-response message that base station reports to mobile phone can be obtained,
It is completely the same with page-response message content, mobile identification number is included in message；Base station can also be obtained to report mobile phone
Business request information reply message, it is completely the same with business request information content, include mobile identification number in message；
Encryption mode instruction message can also be obtained, whether the data and signaling for indicating follow-up process encrypt, and used encryption
Mode.
By monitoring down control channel in called communication process, believed in calling communication flow by monitoring upload control
Road, it can obtain and establish message, wherein including the opposite-terminal number of communication；
In addition, by monitoring down control channel, distribution instruction message can be obtained, indicates the Traffic Channel ginseng of distribution
Number；Handover command messages, instruction channel and cell handoff parameter can be obtained；TMSI can be obtained and reassign message, instruction is more
The mobile identification number of new cell-phone；Channel release message can be obtained, indicates the end of this voice communication flow.
S103, complete control channel monitoring after, in recording step S102 pass through monitoring control channel obtain mobile use
Family identification code, specific objective is if desired monitored, then obtain the mobile identification number of target mobile phones, known by comparing mobile subscriber
Other code judges whether certain communication process belongs to target mobile phones.It is specific as follows：
S1031, when target mobile phones be resident cell when in the range of synchronous GSM cell, exhaled using a caller mobile phone
It is target mobile phones.
S1032, the ascending control channel for monitoring each synchronous GSM cell, when detecting page-response message, from seeking
Exhale acquisition mobile identification number information in response message；Down control channel is monitored, is rung when detecting that base station is paged to mobile phone
Answer when replying message, from base station to mobile phone page response reply message it is middle acquisition mobile identification number information.
S1033, down control channel is monitored, according to the cipher mode obtained in step S102, if communication network unencryption,
And when searching the relevant information of caller handset call target mobile phones, it is determined that the mobile identification number information obtained is target hand
The mobile identification number of machine；When communication network is encrypted, it is necessary to repeatedly call, and count each mobile identification number information and go out
Existing number, after the number of some mobile identification number information record reaches default decision threshold, it is determined as target mobile phones
Mobile identification number.
There is the channel distributed during calling and called communication process in S1034, the GSM cell for monitoring synchronization, are paged when detecting
Response, the replying message of page-response message, business request information or when replying message of business request information, extract in message
Mobile identification number be compared with the mobile identification number of target mobile phones, if identical, show this communication process
Belong to target mobile phones.
S1035, continue to monitor down control channel, if detecting in distribution instruction message or handover command messages and message
There is the distribution of Traffic Channel, then start to monitor voice in Traffic Channel；If do not detect distribution instruction message or switching command
Message, or detect in distribution instruction message or handover command messages but message without distribution Traffic Channel, then judge this time
Communication is not voice communication, returns to step S102 and continues to monitor follow-up access grant channel AGCH.
S104, monitoring service channel obtain voice content：
S1041, Traffic Channel are different by speed, can be divided into Full rate Speech TCH (TCH/FS), half rate speech
Traffic Channel (TCH/HS), EFR voice service channel (TCH/EFS), AMR FS channels (TCH/AFS),
AMR HS channels (TCH/AHS), the decoding process of every kind of channel are all had any different.According to the traffic channel types of distribution
And parameter, voice is monitored in up-downgoing respectively, obtains primary voice data.
S1042, when communication process is encrypted, according to the cipher mode obtained in step S102, select corresponding decryption to calculate
Method carries out data deciphering to primary voice data.GSM often carries out data encryption with A5/1 or A5/2 AESs.
S1043, there is different tone decoding algorithms according to different business channel type, using respective algorithms to raw tone
Data carry out tone decoding, obtain can normal play speech data.Speech data is played in real time, hears target in real time
The voice of mobile phone communication；Speech data is preserved into voice document, is easy to subsequent playback and achieves investigate.
S1044 while continue to monitor Fast Associated Control Channel FACCH (Fast Associated Control
Channel), it is the control channel related to Traffic Channel, obtains the control letter that FACCH borrows 20ms Traffic Channels to transmit
Order.
S1045, parsing control signaling, the channel switching of tracking mobile phone, will according to configuration when detecting handover command messages
Monitor cell and be switched to new cell, monitor channel is switched to new Traffic Channel, it is stable and will not be with to ensure to monitor flow
Lose target.
S105, monitoring terminate：
When detecting channel release message in Fast Associated Control Channel, represent that voice communication flow terminates, terminate this
The monitoring of secondary call；Continue back at step S102 and start audio monitoring next time.
If the mobile identification number of target mobile phones does not change, step S103 can be skipped and obtain target mobile phones movement use
The part of family identification code.
Embodiment 2
The present embodiment monitors all mobile phones in synchronized cells, i.e., general to listen, step is as follows：
S201, data of being eated dishes without rice or wine to each frequencies of GSM are acquired and handled, multiple GSM cells near search and synchronization.
The data of eating dishes without rice or wine of each frequencies of GSM are gathered, the data of collection are divided into by some according to GSM frequencies sum, profit
With polycaryon processor parallel processing, each core handles the cell searching task in a part of frequency point ranges, captured successively respectively
FCCH, SCH, BCCH channel, the down-going synchronous of each frequency point cell is completed, obtain cell system information, realize that the multiple GSM of surrounding are small
Area searching and synchronization.
S202, monitoring control channel, signaling message is detected, therefrom obtain mobile identification number, encryption mode, opposite end number
Code, Traffic Channel parameter, channel and cell handoff parameter, channel release instruction.
S2021, monitor descending access grant channel AGCH (the Access Grant of each synchronous GSM cell
Channel), when detecting assignment message immediately, request is first checked for reference to building in (Request Reference) field
Vertical reason (Establishment Cause), due to being to monitor voice flow, therefore the reason of establishing of its Stochastic accessing should be back
(Answer to Paging) should be paged or initiate audio call (Originating speech call), for establishing reason
Do not make subsequent treatment for the assignment message immediately of other situations.
S2022, the channel parsed in assignment message immediately describe (Channel Description) field, obtain distribution
Control channel parameter, monitor the uplink/downlink control channel of distribution.
By monitoring ascending control channel, page-response message can be obtained, instruction is followed by called communication process, message
In include mobile identification number；By monitoring down control channel, base station can be obtained the page response that mobile phone reports is disappeared
Replying message for breath, it is completely the same with page-response message content, mobile identification number is included in message.
By monitoring ascending control channel, business request information can be obtained, instruction is followed by calling communication flow, message
In include mobile identification number；By monitoring down control channel, base station can be obtained the service request that mobile phone reports is disappeared
Replying message for breath, it is completely the same with business request information content, mobile identification number is included in message.
By monitoring down control channel, encryption mode instruction message can also be obtained, indicates the number of subsequent communications flow
Whether encrypted according to signaling, and the cipher mode taken.
By monitoring down control channel in called communication process, believed in calling communication flow by monitoring upload control
Road, it can obtain and establish message, wherein including the opposite-terminal number of communication.
By monitoring down control channel, distribution instruction message can be obtained, indicates the Traffic Channel parameter of distribution；Pass through
Down control channel is monitored, handover command messages, instruction channel and cell handoff parameter can be obtained.
By monitoring down control channel, TMSI can be obtained and reassign message, the mobile subscriber of instruction more new cell-phone knows
Other code；Channel release message can be obtained, indicates the end of this voice communication flow.
Down control channel is monitored, if detecting in distribution instruction message or handover command messages and message there is business letter
The distribution in road, then start to monitor voice in Traffic Channel；If not detecting distribution instruction message or handover command messages, or have
Detect that then this communication is not voice flow without distribution Traffic Channel in distribution instruction message or handover command messages but message
Journey, continue to monitor follow-up access grant channel AGCH.
Due to be it is general listen, after an audio monitoring is entered, continue to persistently monitor control channel, if finding new language
Sound communication process, it is necessary to multiple voice communication flows while listening for.
S203, monitoring service channel obtain voice content：
S2031, traffic channel types and parameter according to distribution, voice is monitored in up-downgoing respectively, obtains raw tone
Data.
S2032, when communication process is encrypted, according to the cipher mode obtained in step S202, select corresponding decryption to calculate
Method carries out data deciphering to primary voice data.GSM often carries out data encryption with A5/1 or A5/2 AESs.
S2033, there is different tone decoding algorithms according to different business channel type, using respective algorithms to raw tone
Data carry out tone decoding, obtain can normal play speech data；Speech data is played in real time, hears target in real time
The voice of mobile phone communication；Speech data is preserved into voice document, is easy to subsequent playback and achieves investigate.
S2034 while continue to monitor Fast Associated Control Channel FACCH (Fast Associated Control
Channel), it is the control channel related to Traffic Channel, obtains the control letter that FACCH borrows 20ms Traffic Channels to transmit
Order.
S2035, parsing control signaling, the channel switching of tracking mobile phone, will according to configuration when detecting handover command messages
Monitor cell and be switched to new cell, monitor channel is switched to new Traffic Channel, it is stable and will not be with to ensure to monitor flow
Lose target.
S204, monitoring terminate：
When detecting channel release message in Fast Associated Control Channel, represent that voice communication flow terminates, terminate this
The monitoring of secondary call；Continue back at step S202 and persistently carry out audio monitoring.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (6)
1. a kind of GSM mobile handset speech monitoring method, it is characterised in that comprise the following steps：
Step 1, data of being eated dishes without rice or wine to each frequencies of GSM are acquired and handled, search and synchronous multiple GSM cells；
Step 2, monitoring control channel, detect signaling message, therefrom obtain mobile identification number, encryption mode, opposite-terminal number,
Traffic Channel parameter, channel and cell handoff parameter, channel release instruction；
Step 3, monitoring service channel obtain voice content.
2. GSM mobile handset speech monitoring method according to claim 1, it is characterised in that step 2 includes：
Step 21, the descending access grant channel of each synchronous GSM cell is monitored, it is first when detecting assignment message immediately
First check in request reference field and establish reason, step is transferred to for response paging or if initiating audio call if establishing reason
22, subsequent treatment is not otherwise made to assignment message immediately；
Step 22, parsing the channel description field in assignment message immediately, obtain the control channel parameter of distribution, monitor distribution
Uplink/downlink control channel；Page-response message or business request information are monitored by control channel, it is corresponding to open called communication stream
Journey or calling communication flow, mobile identification number is included in message；Encryption mode instruction message is monitored, judges communication process
Whether data are encrypted with signaling and used cipher mode；Message is established in monitoring, to obtain Correspondent Node number；Monitor distribution
Instruction message or handover command messages, to obtain Traffic Channel parameter or channel and cell handoff parameter；Monitor channel release disappears
Breath, to determine to terminate the monitoring of this voice communication.
3. GSM mobile handset speech monitoring method according to claim 2, it is characterised in that step 3 includes：
Step 31, traffic channel types and parameter according to distribution, voice is monitored in up-downgoing respectively, obtains raw tone number
According to；
Step 32, according to the cipher mode obtained in step 22, when communication process is encrypted, selected according to different cipher modes
Corresponding decipherment algorithm carries out data deciphering to primary voice data；
Step 33, there is different tone decoding algorithms according to different business channel type, using corresponding algorithm to raw tone
Data carry out tone decoding, obtain can normal play speech data；Speech data is played in real time, speech data is protected
It is saved as voice document；
Step 34 at the same continue monitor Fast Associated Control Channel, obtain control signaling；
Step 35, parsing control signaling, the channel switching of tracking mobile phone, will prison according to configuration when detecting handover command messages
Listen cell to be switched to new cell, monitor channel is switched to new Traffic Channel.
4. the GSM mobile handset speech monitoring method according to Claims 2 or 3, it is characterised in that step 2 and step 3 it
Between, in addition to：
Step 2 ', complete the monitoring of control channel after, the extracted mobile identification number of record, if desired monitor specific mesh
Mark, then the mobile identification number of target mobile phones is obtained, judge that certain communication process is by comparing mobile identification number
It is no to belong to target mobile phones.
5. GSM mobile handset speech monitoring method according to claim 4, it is characterised in that step 2 ' include：
Step 2 ' 1, when target mobile phones be resident cell when in the range of synchronous GSM cell, utilize a caller handset call
Target mobile phones；
Step 2 ' 2, the ascending control channel for monitoring each synchronous GSM cell, when detecting page-response message, from paging
Mobile identification number information is obtained in response message；Down control channel is monitored, when detecting base station to mobile phone page response
When replying message, from base station to mobile phone page response reply message it is middle acquisition mobile identification number information；
Step 2 ' 3, down control channel is monitored, according to the cipher mode obtained in step 22, if communication network unencryption, and search
Rope to caller handset call target mobile phones relevant information when, it is determined that the mobile identification number information that obtains is target mobile phones
Mobile identification number；When communication network is encrypted, it is necessary to repeatedly call, and count what each mobile identification number information occurred
Number, after the number of some mobile identification number information record reaches default decision threshold, it is determined as the shifting of target mobile phones
Dynamic CUSTOMER ID；
There is the channel distributed during calling and called communication process in step 2 ' 4, the GSM cell for monitoring synchronization, are rung when detecting to page
Should, the replying message of page-response message, business request information or when replying message of business request information, extract in message
Mobile identification number is compared with the mobile identification number of target mobile phones, if identical, shows this communication process category
In target mobile phones；
Step 2 ' 5, continue to monitor down control channel, if detect has in distribution instruction message or handover command messages and message
The distribution of Traffic Channel, then start to monitor voice in Traffic Channel；Otherwise, it is not voice communication to judge this communication, returns to step
Rapid 2.
6. GSM mobile handset speech monitoring method according to claim 1, it is characterised in that step 1 gathers each frequencies of GSM first
Then the data of eating dishes without rice or wine of collection are divided into some according to GSM frequencies sum, utilize polycaryon processor by the data of eating dishes without rice or wine of point
Parallel processing, each core handle the cell searching task in a part of frequency point ranges, capture FCCH, SCH, BCCH letter successively respectively
Road, the down-going synchronous of each frequency point cell is completed, obtain cell system information, realize multiple GSM cells search and synchronization.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134880A (en) * | 2017-12-19 | 2018-06-08 | 中国电子科技集团公司第三十研究所 | A kind of rapid detection method of local loop signaling |
| CN108430066A (en) * | 2018-01-29 | 2018-08-21 | 北京全路通信信号研究设计院集团有限公司 | Collecting method of eating dishes without rice or wine, device and equipment based on wireless terminal module matrix |
| CN108615158A (en) * | 2018-03-22 | 2018-10-02 | 平安科技（深圳）有限公司 | Risk checking method, device, mobile terminal and storage medium |
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| CN108430066A (en) * | 2018-01-29 | 2018-08-21 | 北京全路通信信号研究设计院集团有限公司 | Collecting method of eating dishes without rice or wine, device and equipment based on wireless terminal module matrix |
| CN108430066B (en) * | 2018-01-29 | 2021-02-02 | 北京全路通信信号研究设计院集团有限公司 | Air interface data acquisition method, device and equipment based on wireless terminal module matrix |
| CN108615158A (en) * | 2018-03-22 | 2018-10-02 | 平安科技（深圳）有限公司 | Risk checking method, device, mobile terminal and storage medium |
| CN108615158B (en) * | 2018-03-22 | 2022-09-30 | 平安科技（深圳）有限公司 | Risk detection method and device, mobile terminal and storage medium |
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