WO2007014502A1

WO2007014502A1 - A cell locating method for mobile subscriber

Info

Publication number: WO2007014502A1
Application number: PCT/CN2005/002376
Authority: WO
Inventors: Haitao Zhao; Caie Chen; Jun Wang; Zongchang Guo
Original assignee: Zte Corporation
Priority date: 2005-08-01
Filing date: 2005-12-29
Publication date: 2007-02-08
Also published as: CN1909719A

Abstract

A cell locating method for mobile subscriber, includes the following steps: collecting the interface data of SS7; performing the event synthesis of the collected data; associating the interface event for gaining corresponding relationship between TMSI and MSISDN of the mobile subscriber; updating the corresponding relationship between the TMSI and the MSISDN by the reconfiguration message of TMSI through the event of interface A; obtaining TMSI number and the corresponding cell information from the affair comprised in location information of interface A; associating the corresponding relationship between TMSI number and the cell with the corresponding relationship between TMSI and MSISDN by TMSI number, then getting the corresponding relationship between TMSI and the cell, thus getting the cell location information of the mobile subscriber. The invention solves the problem of cell locating of the mobile subscriber; and the method unifies the monitor interface standard, gives the full consideration, centralized monitor, and can be spreaded in the monitor scope of the whole province to the whole country.

Description

Method for positioning mobile subscriber cell

The present invention relates to the field of mobile communications, and in particular to a method for monitoring positioning of a mobile subscriber cell by monitoring SS7 in the field of signalling monitoring No. 7. Background technique

The communication system in the prior art has been widely used in various fields of society, which has changed the traditional way of life and work, and the communication technology has been rapidly developed under the impetus of people's needs. Among them, the operators have customized a variety of characterization services according to the user's behavior attributes.

At present, the technology for providing user location information through No. 7 signaling monitoring has the following aspects: Large area SMS welcome. The main working principle is to monitor the interaction between the VLR (Visitor Location Register, VLR) and the HLR (Home Location Register, hereinafter referred to as HLR) to obtain the behavior of the user across the VLR. Achieve large area SMS welcome. However, the minimum range that can be located is the area covered by the VLR, and the range of the cell level cannot be distinguished.

At present, the existing cell short message system, such as China Mobile's Shandong mobile cell short message system, works by monitoring the A interface, C interface and D interface, mainly through the A interface to obtain the user's cell location information, but its A interface Limited to IMSI (International Mobile Subscriber Identity,

International Mobile Subscriber Identity, which means that each mobile number corresponds to a BiSI number). The advantage is that it is simple to implement, but its disadvantage is that it is not safe for the user. Because the air interface is: [MSI number, this is not safe, generally it is to go to TMSI (Temporary Mobile Subscriber Identity, Temporary Mobile Subscriber Identity, this The number is based on security considerations. The temporary number assigned by the switch to the mobile phone user is a variable number. Therefore, the implementation technology of BISI is not worth promoting.

At present, there are two publicly available technology patents, one is entitled "Cell SMS Publishing Method and Its Release Device", and its patent application number is: 03112184. 5, the applicant is Jinan Development Technology Co., Ltd., and the other is named " The cell message publishing device, the patent application number is: 03216484. X, the applicant is Jinan Development Technology Co., Ltd. The basic principle is to monitor the BTS (base station, Base Transceiver Station (hereinafter referred to as BTS) to BSC (Base Station Controller, hereinafter referred to as BSC) interface, that is, Abis interface, plus A interface, C interface and D interface. The location of the user is calculated by the location measurement information and other auxiliary information sent to the mobile phone user. The advantage is accurate positioning, but its disadvantages are: First, Abis is an internal interface, there is no unified protocol, so the technology is difficult to promote; Second, the Abis interface has a large amount of data, and is widely distributed, even if it is implemented, it is limited to In a small area, it cannot be monitored in a larger area such as the whole city or even the whole province.

Therefore, in view of the current situation, it is urgent to introduce a cell positioning method that can realize cell positioning, has a small monitoring range, and interfaces are standard, can be widely monitored, and has no influence on the master device. Invention disclosure

The technical problem to be solved by the present invention is to provide a method for positioning a mobile user cell, which overcomes the shortcomings of the prior art that either restricts the A port to take the IMSI number or monitors the Abis non-standard interface and cannot monitor it extensively. An efficient cell positioning method that only needs to monitor the standard link around the MSC (Mobile Switching Centre, hereinafter referred to as MSC) can implement cell positioning for monitoring in the whole province.

To achieve the above object, the present invention provides a method for mobile user cell location, which includes the following steps:

a: Collect data of the A interface, D interface, E interface and G interface of SS7; b: Perform event synthesis on the collected data;

c: correlating the A interface event, the D interface event, the E interface event, and the G interface event to obtain a correspondence between the mobile user TMSI and the MSISDN;

d: re-allocating the message through the TMSI in the A interface event, extracting the new and old TMSI number, and updating the correspondence between the TMSI and the MSISDN;

e: obtaining the TMSI number and the cell information corresponding thereto from the event that the A interface includes the location information; f: corresponding to the correspondence between the TMSI number and the cell in the step e and the TMSI and the MSISDN in the step d The relationship is obtained by the TMSI number, that is, the correspondence between the MSISDN and the cell where the MSISDN is located, thereby obtaining the cell location information of the mobile user.

The above method is characterized in that the event including the location information in the step e includes location update, call, and send/send SMS. The above method is characterized in that, in the condition that the user is updated across the VLR location, the step c further includes:

Step c31: Extract a correspondence between the original TMSI of the user and the current TMSI from the A-interface location update TDR.

In step c32, extract the correspondence between the original TMSI and the IMSI of the user from the G interface sending identifier TDR; Step c33, extract the correspondence between the user MSISDN and the top SI from the D interface location update event; Step c34, through steps c32 and c33 Finding, by the top SI, the results of the steps c32 and c33, and obtaining the correspondence between the original TMSI and the MSISDN of the user;

Step c35: Through steps c31 and c34, the original TMSI finds the result of the correlation between the c31 and the step c34, and obtains the correspondence between the user now TMSI and the MSISDN.

The above method is characterized in that, in the condition that the mobile user initiates a call to the user other than the VLR in the network, the step c further includes:

Step c41: Extract a correspondence between the latest TMSI of the user and the called MSISDN from the CDR of the A interface.

Step c42: Extract the correspondence between the calling MSISDN and the called MSR from the CDR of the E interface. Step c43: Send the routing information from the D interface to extract the corresponding relationship between the called MSISDN and the called MSRN.

Step c44: Integrate the results of step c41, step c42, and step c43, and obtain the correspondence between the calling user and the MSISDN according to the called 'MSISDN and the called MSRN.

The above method is characterized in that, in the condition that the mobile user initiates a call to the user outside the network, the step c further includes:

Step c51: Extract a correspondence between the latest TMSI of the user and the called user number from the CDR of the A interface.

Step c52: Extract a correspondence between the calling MSISDN and the called user number from the E interface call CDR;

Step c53: Associate the results of steps c51 and c52 with the called subscriber number, and obtain the correspondence between the calling subscriber and the MSISDN.

The invention has the advantages that: the cell positioning method of the mobile user of the present invention comprehensively and comprehensively considers the association characteristics between various protocol types from a system aspect, and proposes a unified and efficient extraction of the correspondence between the user MSISDN and the cell. The method of relationship, thus effectively solving the community setting of mobile users The problem of the position; the method of monitoring the interface standard is unified, considers complete, can be centralized monitoring, and has no impact on the main equipment running on the live network, and can be extended to the whole province and even the whole country for monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

1 is a flowchart of a method for positioning a mobile user cell according to the present invention;

2 is a schematic diagram of signaling connection when a user crosses VLR location update according to an implementation of the present invention; FIG. 3 is a flow chart showing information association when a user crosses VLR location update according to an implementation of the present invention; FIG. 4 is another embodiment of the present invention. A schematic diagram of a signaling connection of a user other than the VLR in the calling network of the mobile subscriber;

5 is a flow chart showing the association of information of a user other than the VLR in the mobile subscriber's calling network according to another implementation of the present invention;

6 is a schematic diagram of a signaling connection of a mobile subscriber calling a network out-of-network user according to another implementation of the present invention;

FIG. 7 is a flow chart showing the information association of a mobile subscriber calling a network user outside the network according to another embodiment of the present invention. The best way to implement the invention

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

The invention provides a method for realizing mobile user cell location by using No.7 signaling, and the interface protocols involved mainly include: ISUP (ISDN User Part, ISDN User Part, hereinafter referred to as ISUP). MAP (Mobile Application Part, Mobile Application Part (hereinafter referred to as MAP) and BSSAP (Base Station System Application Part, BSSAP). The ISUP protocol interface mainly monitors the call connection, and can obtain the calling party number and the called user number in the connection. If the called user is a mobile user, the called number may be the called roaming number. The MAP protocol interface mainly monitors location update events, sends routing information events, and provides roaming number events. The purpose is to obtain the user's MSISDN (Mobile Station International ISDN Number, also known as the mobile phone number) and: Correspondence between EMSI, MSRN (Mobile Station Roaming Number) and MSISDN. The Gsm A interface is mainly used to obtain the correspondence between the user's TMSI and the location information, and obtain the correspondence between the calling number and the called number in the call. Can be seen, alone Monitoring one of these interfaces is difficult to achieve user positioning needs. Moreover, most of the BSSAP signaling uses the TMSI number, and the corresponding relationship between the user TMSI and the MSISDN cannot be directly obtained. In view of the current situation, the present invention proposes an efficient and universal mobile user cell positioning method, which uses TMSI for BSSAP signaling in the live network or: [MSI is suitable. The user relationship between the mobile subscriber location update, the originating call, and the terminating call can be associated with the corresponding relationship between the TMSI and the MSISDN, thereby further realizing the mobile user cell positioning.

FIG. 1 is a flowchart of a mobile user cell positioning method, where the first step 101 signaling collection and the second step 102 event synthesis are consistent for various situations implemented by the patent, and the subsequent steps are based on the user's behavior type. Different, the processing method is different.

Specific steps are as follows:

Step 101: Collect data of the A interface, the D interface, the E interface, and the G interface of the SS7. Step 102: Perform event synthesis on the collected data.

Step 103: Associate an A interface event, a D interface event, an E interface event, and a G interface event to obtain a correspondence between the mobile user TMSI and the MSISDN.

Step 104: Re-allocate the message through the TMSI in the A interface event, extract the new and old TMSI number, and update the correspondence between the TMSI and the MSISDN.

Step 105: Obtain a TMSI number and corresponding cell information from an event that includes location information on the A interface.

Step 106: Associate the correspondence between the TMSI number and the cell in the step 105 and the corresponding relationship between the TMSI and the MSISDN in the step 104 by using a TMSI number, that is, obtain a correspondence between the MSISDN and the cell where the MSISDN is located, thereby obtaining a correspondence relationship between the MSISDN and the cell where the MSISDN is located. Cell location information of the mobile user.

The following is for different user behavior patterns to describe the steps of the implementation.

First, the user cross-VLR location update behavior

In this part, its implementation principle is shown in Figure 2, which shows the simple process of user update across VLR locations. The process is as follows:

201. The BSC where the user is located sends a location update request message to the MSC where the user is located.

202. The MSC where the user is located is determined to update the VLR location after receiving the location update request message, and send the identity signaling to the MSC where the user originally located.

203. The MSC where the user originally located sends feedback to the MSC where the user is located.

204. The MSC where the user is located feeds back the location update result to the BSC where the user is located. The two vertical dotted lines in the figure are the monitored areas of the present invention. The original TMSI number associated with the A interface location update event and the G interface signaling event can obtain the user TMSI and: [MSI correspondence, and then according to other events of the A interface. The correspondence between the MSISDN and the IMSI can obtain the cell location information of the mobile user.

The specific implementation steps are shown in Figure 3. The steps are as follows:

31. First, collect the data of the seventh signaling;

32. Put the collected data into the analysis module for normal CDR/TDR (call detail record/transaction detail record, hereinafter referred to as CDR/TDR for synthesis analysis). For details, see Patent No.7. The method for synthesizing the detailed call record event is described in the following patent application number: 200310113550. 6, the publication number is: 1545258; as disclosed in the prior art, no further details are provided herein.

33. After the last two steps are completed, the following three steps are processed in parallel:

331. Extract a correspondence between the original TMSI of the user and the current TMSI from the A-interface location update TDR.

332. Extract a correspondence between the original TMSI and the top SI of the user by using the TDR from the G interface.

333. Extract a correspondence between the user MSISDN and the IMSI from the D interface location update event.

34. Steps 332 and 333, by: EMSI finds the results of associations 332 and 333, and obtains the correspondence between the original TMSI and the MSISDN of the user;

35. Through steps 331 and 34, the original TMSI finds the results of the associations 331 and 34, and obtains the correspondence between the user's current TMSI and the MSISDN;

36. Extract the correspondence between the original TMSI and the new TMSI from the A-interface TMSI redistribution event, and update the correspondence between the TMSI and the MSISDN according to the result of the step 35;

37. Analyze other events of the A interface including location information, such as periodic location update, normal location update, call initiation, termination call, texting, and receiving short message, etc., extracting the current TMSI and the cell location information corresponding to the user;

38. The result of the step 37 is searched by the TMSI to find the result of the step 36, and the user MSISDN and the corresponding cell location information are obtained, thereby realizing the cell location of the user.

Second, the mobile user calls the user outside the VLR in the calling network.

In this part, its implementation principle is shown in Figure 4. Figure 4 shows the simple process of the mobile user calling the user outside the VLR in the calling network. The process is as follows: 401 The BSC where the user is located initiates a call message to the MSCl;

402 MSC1 finds the HLR registered by the called party through the called number and sends a routing message to the HLR to obtain the route of the called user.

403 HLR will return the called route to MSC1, indicating that the called user is now at MSC2;

404 MSC1 initiates a call message to MSC2 to connect the call to MSC2.

The part between the two vertical dotted lines in the figure is the area monitored by the invention. The called MSISDN and the called MSRN are associated with the A interface call event, the E interface call event and the D interface send the routing information event, thereby obtaining the user. The corresponding relationship between the TMSI and the MSISDN, and then the cell location information of the mobile user can be obtained according to other events of the A interface. The specific implementation steps are shown in Figure 5. The steps are as follows:

51. First, collect data of the seventh signaling;

52. Put the collected data into an analysis module for normal CDR/TDR synthesis analysis, and the specific synthesis method is the same as the first embodiment of the specific implementation manner;

53. After the last two steps are completed, the following three steps are processed in parallel:

531. Extract the correspondence between the latest TMSI of the user and the called MSISDN from the CDR of the A interface. 532. Extract the correspondence between the calling MSISDN and the called MSRN from the CDR of the E interface.

533. Sending routing information from the D interface The TDR extracts the corresponding relationship between the called MSISDN and the called MSRN.

54. Combining the results of step 531, step 532, and step 533 above, according to the called MSISDN and the called MSRN, obtain the correspondence between the calling user and the MSISDN.

55. Extract the original TMSI and the new TMSI corresponding relationship from the A interface TMSI redistribution event, and update the result of step 54 to obtain the latest TMSI and MSISDN correspondence of the user;

56. Analyze other events of the A interface including location information, such as periodic location update, normal location update, call origination, terminal call, texting, and receiving short message, etc., extracting the current TMSI and the cell location information corresponding to the user;

57. The result of the step 56 is used to find the result of step 55 through the TMSI, and the user MSISDN and the corresponding cell location information are obtained, thereby realizing the cell location of the user.

Third, the mobile user initiates a call to the out-of-network user

In this part, its implementation principle is shown in Figure 6. Figure 6 shows the simple process of the mobile user calling the off-network user. The process is as follows:

601 The BSC where the user is located initiates a call message to MSC1; 602 MSC1 judges to be an out-of-network call by the called number, initiates a call-to-call message to MSC2 (intranet or off-net gateway), and connects the call to MSC2.

The two vertical dotted lines in the figure are the monitored areas of the present invention. The called number is associated with the A interface call event and the E interface call event, thereby obtaining the correspondence between the user TMSI and the MSISDN, and then according to other events of the A interface. Get the cell location information of the mobile user. The specific implementation steps are shown in Figure 7. The steps are as follows:

71. First, collect data of the seventh signaling;

72. Put the collected data into an analysis module for normal CDR/TDR synthesis analysis, and the specific synthesis method is the same as the first embodiment of the specific implementation manner;

73. After the last two steps are completed, the parallel processing is as follows:

731. Extract the correspondence between the latest TMSI of the user and the called user number from the CDR in the A interface.

732. Extract a correspondence between the calling MSISDN and the called subscriber number from the E interface call CDR. 74. Associate the results of the 731th and the 732th steps by the called subscriber number, and obtain the correspondence between the calling subscriber and the MSISDN. ;

75. Extract the correspondence between the original TMSI and the new TMSI from the ASI TMSI redistribution event, and update the result of the step 74 to obtain the latest TMSI and MSISDN correspondence of the user;

76. Analyze other events of the A interface including location information, such as periodic location update, normal location update, call initiation, termination call, texting, and receiving short message, etc., extracting the current TMSI and the cell location information corresponding to the user;

77. The result of the step 76 is used to find the result of the step 75 through the TMSI, and the user MSISDN and the corresponding cell location information are obtained, thereby realizing the cell location of the user.

The present invention is not related to the correspondence between all the A-interface user events and the location of the MSISDN and the cell location. There is a certain limitation. First, one of the following actions must be performed to associate the correspondence between the user MSISDN and the TMSI:

1 Call out to the network, or outside the VLR in the network;

2 Outside the network or an incoming call outside the VLR in the network;

3 update across VLR locations;

4 After turning off the power for a long time, the length of time depends on the effective time of the TMSI set by the switch. That is to say, if the method is opened by the method of the present invention, if the user has not been outside the network or the incoming call of the VLR outside the network, there is no call out to the network or the VLR in the network. In addition, if the VLR location update is not performed, and the system does not shut down, the method of the present invention is associated with the corresponding relationship between the user MSISDN and the TMSI. However, once one of the above behaviors is present, the method of the present invention can remember the correspondence between its initial MSISDN and TMSI, and the corresponding relationship can be maintained. This is an accumulation process.

After the corresponding relationship between the MSISDN and the TMSI, the following action trigger signaling is required to obtain the location information of the user, thereby performing positioning:

1 user boot/shutdown action;

2 incoming/outgoing;

3 Receiving text messages / sending text messages;

4 location area level location update;

5 Periodic location update, this location update is automatically generated by the network side, and its frequency can be set in the switch.

As can be seen from the above description, when the method of the present invention is used in the initial state, the detection rate of the user cell location is not high, and the guess rate is used to detect the probability of the MSISDN and the cell location relationship, but with time Accumulation, its detection rate will gradually increase.

Although several specific embodiments of the method of the present invention have been described above with reference to the accompanying drawings, the present method is not limited to the specific embodiments described above, and is not limited to the type of network monitored by SS7 signaling. The manners are merely illustrative and not limiting, and various modifications may be made by those skilled in the art without departing from the scope of the method and the scope of the claims. These should be within the protection of this method. Industrial applicability

The cell positioning method of the mobile user according to the present invention comprehensively and comprehensively considers the association characteristics between various protocol types from a system aspect, and proposes a unified and efficient method for extracting the correspondence relationship between the user MSISDN and the cell, thereby effectively The problem of the cell location of the mobile user is solved; the method for monitoring the interface standard is unified, the consideration is complete, the monitoring can be centralized, and the main equipment running on the live network has no influence, and can be extended to the whole province and even the whole country for monitoring. The method of the present invention is suitable for use in the field of communication involving Signaling No. 7 signaling, and the method of the present invention is equally applicable to other fields in which similar problems exist.

Claims

Claim

A method for positioning a mobile user cell, comprising the following steps:

2. The method according to claim 1, wherein the event including the location information in the step e includes location update, call, and send/send SMS.

The method according to claim 1, wherein the step c further comprises: after the user is updated across the VLR location:

Step c32, extracting a correspondence between the original TMSI and the IMSI of the user from the G interface sending identifier TDR; Step c33, extracting a correspondence between the user MSISDN and the IMSI from the D interface location update event; Step c34, passing steps c32 and c33 Finding the result of the correlation between the c32 and the c33 steps by the BiSI, and obtaining the correspondence between the original TMSI and the MSISDN of the user;

4. The method according to claim 1, wherein the method is in the mobile subscriber call network

In the case of a user other than the VLR, the step c further includes:

Step c42: Extract a correspondence between the calling MSISDN and the called MSRN from the originating CDR of the E interface. Step c43: Extract a correspondence between the called MSISDN and the called MSRN from the D interface routing information TDR.

Step c44: Integrate the results of step c41, step c42, and step c43, and obtain the correspondence between the calling user and the MSISDN according to the called MSISDN and the called MSRN.

The method according to claim 1, wherein, in the case that the mobile user initiates a call to the user outside the network, the step c further includes: