CN1516513A - Mobile user identify identification method - Google Patents

Abstract

The invention relates to mobile communication network, especially the method for searching and identifying the identification of user in network. It includes following steps: uses the ISDN number telephone to dial the ISDN number of mobile station, receives the call response information, mobile identification code reallocating information and the call creation information in at least a around district, if finds out the call creation information which contains calling-party ISDN number, the mobile station identification number of the call response information is the number of called station, the mobile identification number of reallocating information is the new number of the called station.

Description

A kind of mobile subscriber identifier recognition methods

Technical field

The present invention relates to mobile communication network, especially in mobile communication network, search and discern the method for mobile subscriber identifier.

Background technology

State security department, secret department, public security, departments such as army, needs are monitored the air interface of mobile communication network, search and discern the identity of travelling carriage.But mobile communication network is in order to protect user's identity, and aloft interface adopts temporary mobile station identification code (TMSI) to replace user identification code.

In the digital mobile communication net, each travelling carriage has several identity codes, such as IMEI (international mobile device identifier), IMSI (international mobile subscriber identifier), TMSI and travelling carriage ISDN (integrated services digital network) number etc.

Wherein, IMEI is the international mobile station equipment identifier of fixing dispatching from the factory, and it mainly is made of with the production number relevant with producer model, permission code.Because separation between machine and card, IMEI can not be used for determining user's identity.

International mobile subscriber identifier (IMSI) be in the wireless network only-confirm mobile subscriber's identification code, its fixed storage is in user's SIM (subscriber identification module) card.Mobile station ISDN number (Mobile Subscriber International ISDN Number) is meant that calls customer is to call out required group of client's in the digital public land cellular mobile communications networks number.ISDN number and IMSI have relation one to one, and corresponding relation is set by operator, and is stored among the HLR (home location register).But in order to protect user's identity, IMSI only transmits in wireless channel when the user inserts network access and position renewal for the first time.

During other situation, air interface replaces IMSI with temporary mobile subscriber identity TMSI.TMSI is distributed by MSC/VLR (mobile services switching centre/vision location logger), and constantly changes, and the replacement cycle is provided with by net operation person.

In sum, IMSI and mobile station ISDN number can be used for determining the identity of travelling carriage, but that often occur in the air interface but is temporary mobile subscriber identity TMSI, so want to exchange and search and discern travelling carriage by monitoring air interface signaling, just must find TMSI and user's IMSI or the corresponding relation between the MSISDN, by TMSI identification user's identity.

The identity of travelling carriage is searched and discerned to the Mobile Subscriber International ISDN Number that the present technology of intercepting can only occur by the air interface of monitoring mobile communication network, and can't find corresponding relation between itself and the Mobile Subscriber International ISDN Number for appearing at temporary mobile subscriber identity TMSI in the mobile communication network air interface, promptly can't discern user's identity by TMSI.

Summary of the invention

The technical problem that the present invention solves provides a kind of mobile subscriber identifier recognition methods, by monitoring the signaling exchange of wireless network air interface, search and discern the TMSI of air interface and the corresponding relation between the mobile station ISDN number, overcome the shortcoming that to discern user identity by TMSI, reach by following the tracks of travelling carriage TMSI, monitor the conversation of this travelling carriage or search the purpose of the approximate location of this travelling carriage.

Mobile subscriber identifier recognition methods provided by the invention may further comprise the steps:

1) with the ISDN number of the making call travelling carriage of known ISDN number;

2) page-response message at least one sub-district, temporary mobile station identification code reallocation message and call setup message around the reception;

3) search in the call setup message known caller ISDN number whether occurs;

4) if find the call setup message that contains the caller ISDN number, then the temporary mobile station identification code number in the page-response message of this message correspondence is exactly the current temporary mobile station identification code number of called mobile station; The temporary mobile station identification code number that occurs in the temporary mobile station identification code reallocation message of this call setup message correspondence is exactly the new temporary mobile station identification code number of this called mobile station;

5), then monitor the signaling exchange of other sub-district, repeating step 1 if do not occur known caller ISDN number in the call setup message), 2), 3) operation, up to finding the call setup message that contains known caller ISDN number.

Step 2) page-response message at least one sub-district, temporary mobile station identification code reallocation message and call setup message are that layout uplink receiver and downlink receiver receive in the mobile network around the described reception.

Step 2) reallocate message and call setup message of the page-response message at least one sub-district, temporary mobile station identification code is further comprising the steps of around the described reception:

21) utilize downlink receiver to receive access grant channel, must arrive the immediate assignment message that travelling carriage is issued in the base station;

22) receive immediate assignment message in the access grant channel after, utilize the uplink and downlink receiver to receive Separate Dedicated Control Channel;

23) uplink receiver receives up Separate Dedicated Control Channel, obtains " page-response message " that mobile phone is issued the base station, and downlink receiver receives " the temporary mobile station identification code reallocation message " that mobile phone is issued in the base station.

The beneficial effect of the inventive method is the TMSI that can give this travelling carriage in the place cell ID and the network allocation of mobile network's air interface ferret out travelling carriage, and making in the wave point search and following the tracks of travelling carriage becomes possibility.

Utilizing the method for the invention to work as target MS is in and can calls out a target MS when uplink receiver and downlink receiver are intercepted the sub-district and finish and search and identification travelling carriage identity task, thereby guarantee the realization of listening functions simply and effectively, and target MS can not produce ring in the search identifying, and the identifying that is to say the inventive method is to finish under the situation that target MS can not be perceiveed.

Description of drawings

Fig. 1 is a travelling carriage called connection process

Fig. 2 is the flow chart of the inventive method search and identification travelling carriage identity

Embodiment

Be example with the GSM network below, the enforcement to technical scheme is described in further detail in conjunction with the accompanying drawings:

Fig. 1 is a travelling carriage called connection process

MSC sends paging request message to relevant base station, sets up the calling connection of MSC to MS.After BSC determines the BTS in called mobile station MS position district, send the calling blocking message to it; BTS sends the identification code TMSI and the page-mode of called MS again by paging channel PCH.

After called MS received paging to it, MS started and inserts process at random, and channel request message is given BS (base station sub-system) on Random Access Channel RACH.BS distributes SDCCH (Separate Dedicated Control Channel), and sends immediate assignment message to MS on the SDCCH channel.MS is transformed on the corresponding SDCCH, sets up main signaling link.Then, MS returns page-response message to BS and MSC.

After receiving the page response of MS, MSC inserts request to the VLR process of transmitting.Begin conventional authentication process then.If success, VLR sends message certification message to MSC.MSC sends new TMSI to MS, and sends call setup setup message to MS, comprises the ISDN number (if opening the caller identification business) of caller phone in this message.Called MS enters call state after receiving this message, returns call confirmation message to BS simultaneously, and MS has had the condition of conversation with explanation.

After receiving call confirmation message, MSC is the call distribution terrestrial channel for this reason, and order BSC distribution service letter TCH gives MS.

After the TCH channel was set up and finished, MSC received the ring-back message from MS.MSC sends CONNect Acknowledgement to the PSTN calling terminal then, and finishes in the address that indication called mobile station MS connects in the message.

Behind the called mobile station off-hook, MS sends connection message to MSC.MSC returns the MS response message, beams back and answers message to give the calling subscriber.

So far, finished the called handshaking procedure of travelling carriage.

In above travelling carriage called connection process, comprise the TMSI of travelling carriage in the SABM page-response message that travelling carriage sends on the SDCCH channel; MSC issues in the TMSI reallocation message of travelling carriage and comprises the new TMSI of distributing to travelling carriage; The ISDN number that comprises caller phone in the call setup setup message.

Fig. 2 is a flow chart of searching and discern the travelling carriage identity

Control wired or wireless modem, dial the ISDN number of certain travelling carriage.

Then, utilize downlink receiver to receive AGCH (access grant channel) channel, must arrive the immediate assignment message that travelling carriage is issued in the base station.The base station utilizes immediate assignment message for permitting the handset allocation Dedicated Control Channel SDCCH of access network, comprises the channel parameter of SDCCH in the immediate assignment message, as Absolute RF Channel Number, timeslot number, training sequence, frequency parameter etc.

In the SDCCH channel, signaling exchanges such as authentication and TMSI reallocation are carried out in mobile phone and base station; Afterwards, the base station is that mobile phone is assigned a Traffic Channel, and begins to enter talking state.

After receiving the immediate assignment message among the AGCH, utilize the uplink and downlink receiver to receive the SDCCH channel.Uplink receiver receives up SDCCH channel, obtains " page-response message " paging response that mobile phone is issued the base station.Comprise the mobile phone TMSI that mobile phone reports the base station in the page-response message.Downlink receiver receives " TMSI reallocate message " that mobile phone is issued in the base station, comprises the base station in this message and redistributes new TMSI to mobile phone.

After receiving " TMSI reallocate message ", hang up calling to travelling carriage.Travelling carriage called connection flow process is ended, and travelling carriage can ring.

Judge whether the ISDN number in call setup (Setup) message is the number of wired or wireless modem.If the number of wired or wireless modem, then this moment, TMSI TMSIO promptly was the TMSI that network allocation is given this ISDN number travelling carriage.Otherwise, to change and monitor the ISDN number that the call supervision object is continued in the sub-district, the number of wired or wireless modem appears up to the ISDN number in call setup (Setup) message.

Claims (4)

1. mobile subscriber identifier recognition methods may further comprise the steps:

1) with the ISDN number of the making call travelling carriage of known ISDN number;

2) page-response message at least one sub-district, temporary mobile station identification code reallocation message and call setup message around the reception;

3) search in the call setup message known caller ISDN number whether occurs;

4) if find the call setup message that contains the caller ISDN number, then the temporary mobile station identification code number in the page-response message of this message correspondence is exactly the current temporary mobile station identification code number of called mobile station; The temporary mobile station identification code number that occurs in the temporary mobile station identification code reallocation message of this call setup message correspondence is exactly the new temporary mobile station identification code number of this called mobile station;

5), then monitor the signaling exchange of other sub-district, repeating step 1 if do not occur known caller ISDN number in the call setup message), 2), 3) operation, up to finding the call setup message that contains known caller ISDN number.

2. the method for claim 1, it is characterized in that step 2) page-response message, temporary mobile station identification code reallocation message and call setup message around the described reception at least one sub-district be that layout uplink receiver and downlink receiver receive in the mobile network.

3. method as claimed in claim 2 is characterized in that step 2) reallocate message and call setup message of page-response message, temporary mobile station identification code around the described reception at least one sub-district be further comprising the steps of:

21) utilize downlink receiver to receive access grant channel, must arrive the immediate assignment message that travelling carriage is issued in the base station;

22) receive immediate assignment message in the access grant channel after, utilize the uplink and downlink receiver to receive Separate Dedicated Control Channel;

23) uplink receiver receives up Separate Dedicated Control Channel, obtains " page-response message " that mobile phone is issued the base station, and downlink receiver receives " the temporary mobile station identification code reallocation message " that mobile phone is issued in the base station.

4. the method for claim 1, it is characterized in that also comprising receive temporary mobile station identification code reallocation message after, hang up calling to travelling carriage.

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