CN106954231B - The method of LTE network calculating IMSI number location of mobile users - Google Patents

Abstract

The invention discloses a kind of LTE networks to report the MR method that record calculates IMSI number location of mobile users according to wireless measurement, comprising: 1. by core network signalling call history CHR lane database according to by positioning imsi number and time inquiring relevant field；2. finding corresponding Serving Cell ID, 1 Neighbor Cell ID, 2 Neighbor Cell ID, 3 Neighbor Cell ID in MR lane database；3. calculating the position of the IMSI user by inquiry base station basic information database.The present invention solves the problems, such as that position error caused by can not effectively corresponding to specific IMSI user and base station basic information database information using MR is big.

Description

Method for LTE network to calculate IMSI number mobile user location

technical field

The invention belongs to the field of data mining and analysis in mobile communication, and in particular relates to a method for calculating the position of a mobile user with an IMSI number by an LTE network according to a wireless measurement report MR record.

Background technique

LTE cannot obtain the user's IMSI number on the wireless side. MR is the wireless measurement report (MeasureReport) of LTE, which contains the ID of the serving cell and the ID of the adjacent cell, but the mobile subscriber number MSISDN and IMSI number of the user are not reflected in the MR database of the wireless measurement report. As a result, when using MR, it cannot Effectively correspond to specific IMSI users.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned existing problems, and provide a method for calculating the location of a mobile user with an IMSI number in an LTE network according to the wireless measurement report MR database. Query the relevant fields with the number and time, associate and find out the corresponding Serving CellID, Neighbor 1 Cell ID, Neighbor 2 Cell ID, Neighbor 3 Cell ID in the MR database, and calculate the location of the IMSI user by querying the basic information database of the base station.

Technical solution of the present invention is as follows:

A method for calculating the location of an IMSI number mobile user in an LTE network, characterized in that:

The method comprises the steps of:

Step 1) In the core network signaling call history record CHR database, according to imsi equal to the IMSI number of the positioned mobile terminal and mme_uesiap_utc equal to the time TIME to be positioned, query the device_num, mme_uesiap, enodeb_id of the IMSI number at this time TIME;

Step 2) extract MMEGI and MMEC from step 1) device_num: set device_num to DN0DN1DN2DN3DN4DN5DN6DN7DN8DN9DN10DN11DN12DN13DN14DN15, the 7th to 10th DN6DN7DN8DN9 is MMEGI, and the 11th to 12th DN10DN11 is MMEC;

Step 3) In the MR database, according to MME UE S1AP ID is equal to mme_uesiap in step 1), MMEC is equal to MMEC in step 2), MMEGI is equal to MMEGI in step 2), eNB ID is equal to enodeb_id in step 1), Time is equal to step 1) TIME field of the cell to query the Serving Cell ID of the serving cell and the Neighbor 1 Cell ID, Neighbor 2 Cell ID, and Neighbor 3 Cell ID of each adjacent cell;

Step 4) In the base station basic information database, according to the enodeb_id query whose eNB ID is equal to step 1), obtain the TAC value belonging to the base station;

Step 5) In the base station basic information database, according to the TAC value obtained in step 4) and the Serving Cell ID, Neighbor 1 Cell ID, Neighbor 2 Cell ID, and Neighbor 3 Cell ID obtained in step 3), query the serving cell and each adjacent cell Longitude, latitude, tower height, direction angle information;

Step 6) According to the longitude longt_s, latitude lat_s of the serving cell obtained in step 5) and the longitude longt_n and latitude lat_n of each adjacent cell, calculate whether the distance between the serving cell and each adjacent cell is less than a preset threshold, the distance calculation formula is as follows, and the unit is meter :

6371004*arccos{1-[(sin((90-lat_n)*∏/180)*cos(longt_n*∏/180)-sin((90-lat_s)*∏/180)*cos(longt_s*∏/180 )) ² +(sin((90-lat_n)*∏/180)*sin(longt_n*∏/180)-sin((90-lat_s)*∏/180)*sin(longt_s*∏/180)) ² +(cos((90-lat_n)*∏/180)-cos((90-lat_s)*∏/180)) ² ]/2};

Step 7) When the distance between the serving cell and each adjacent cell is less than 10 kilometers, use the "Method for Realizing Mobile User Positioning Based on Cell Frequency Weighting Algorithm within a Time Period" (patent application number 201610529639.8) to calculate the mobile user with a certain IMSI number at that time the position of TIME;

When the distance between the serving cell and each adjacent cell is greater than the preset threshold, it will be fed back to the operator, and the actual base station longitude and latitude will be measured according to the TAC and CellID to the location of the cell's home base station, and then the basic information database of the base station will be corrected, and return to step 4).

Compared with prior art, the beneficial effect of the present invention is:

In the core network signaling call history record CHR database, query the relevant fields according to the IMSI number and time of the located mobile user, and correlate and find out the corresponding Serving Cell ID, Neighbor 1 CellID, Neighbor 2 Cell ID, and Neighbor 3 in the MR database The Cell ID calculates the location of the IMSI user by querying the basic information database of the base station. The data of the serving cell and adjacent cells in the MR record can be used to calculate the location of the mobile user, improve the positioning accuracy, and solve the problem that the MR data on the LTE wireless side cannot correspond to specific IMSI users in the past. At the same time, a solution is proposed for the wrong location information in the basic information database of the base station. It has good promotion and application value.

Description of drawings

Fig. 1 is the implementation frame diagram in the embodiment of the present invention

Fig. 2 is some fields of the wireless measurement report MR database in the embodiment of the present invention

Fig. 3 is the algorithm flowchart in the embodiment of the present invention

Fig. 4 is some fields of the core network signaling call history record CHR database in the embodiment of the present invention

Fig. 5 is some fields of the base station basic information database in the embodiment of the present invention

Detailed ways

The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

Due to the large amount of MR data, the present invention should adopt a big data platform. The data sources of the patented positioning system are the wireless measurement report MR database on the LTE wireless side and the call history record signaling bill CHR database on the core network side, and the above data sources are provided to the positioning equipment shown in Figure 1, such as a computer. The data format of the wireless measurement report MR database is shown in Figure 2.

MMEGI (MME Group ID): MME group number

MMEC (MME Code): MME number

MME UE S1AP ID: MME UE S1 Application Protocol ID number

eNB ID (eNodeB ID): eNodeB base station number

Time: the timestamp corresponding to the MR

Serving Cell ID: the cell ID of the serving cell

Neighbor 1 Cell ID: the cell ID of the neighboring cell 1

Neighbor 2 Cell ID: the cell ID of the adjacent cell 2

Neighbor 3 Cell ID: the cell ID of the neighboring cell 3

At the same time, the CHR database of the core network signaling bill call history record shown in Figure 4 should be obtained, including information such as the IMSI number of the user in each record, mme_uesiap, and the corresponding time.

device_num: device number

imsi: International Mobile Subscriber Identity

msisdn: mobile station number

enodeb_id: eNodeB base station number

mme_uesiap: MME UE S1 Application Protocol ID number

mme_uesiap_utc: the generation time of the UES1AP connection identifier assigned by the MME

At the same time, the base station basic information database shown in Figure 5 should be obtained, including the following information:

TAC: Tracking Area Code location area code of the base station

ENB ID: eNodeB base station number

CELL ID: cell number

As shown in Figure 1: First, query device_num, mme_uesiap, and enodeb_id in the core network signaling call history record CHR database according to the located imsi number and time Time, extract MMEGI and MMEC from device_num, and use MME UE S1AP ID, MMEC, MMEGI, The eNB ID and Time fields query the Serving Cell ID, Neighbor 1 Cell ID, Neighbor 2 Cell ID, and Neighbor 3 Cell ID in the MR database, query the base station basic information database, and obtain the location, tower height, and direction angle of the serving cell and adjacent cells Information, using the "Method for Realizing Mobile User Positioning Based on the Cell Frequency Weighting Algorithm within a Time Period" (patent application number 201610529639.8) to calculate the position of the mobile user.

details as follows:

Step 1) In the core network signaling call history record CHR database (see Figure 4 for data content), query the device_num and mme_uesiap of the IMSI number at the time TIME according to imsi equal to the IMSI number of the positioned mobile terminal and mme_uesiap_utc equal to the time TIME to be positioned 、enodeb_id;

Step 2) extract MMEGI and MMEC from step 1) device_num: set device_num to DN0DN1DN2DN3DN4DN5DN6DN7DN8DN9DN10DN11DN12DN13DN14DN15, the 7th to 10th DN6DN7DN8DN9 is MMEGI, and the 11th to 12th DN10DN11 is MMEC;

Step 3) In the MR database (see Figure 2 for data content), according to MME UE S1AP ID is equal to mme_uesiap in step 1), MMEC is equal to MMEC in step 2), MMEGI is equal to MMEGI in step 2), and eNB ID is equal to step 1) enodeb_id and Time are equal to the TIME field in step 1), query the serving cell Serving Cell ID and each adjacent cell Neighbor 1Cell ID, Neighbor 2 Cell ID, Neighbor 3 Cell ID;

Step 4) In the base station basic information database (see Figure 5 for data content, the data source is a telecom operator), query according to the enodeb_id whose eNB ID is equal to step 1), and obtain the TAC value of the base station;

Step 5) In the base station basic information database (see Figure 5 for the data content, the data source is a telecom operator), according to the TAC value obtained in step 4) and the Serving Cell ID, Neighbor 1 Cell ID, and Neighbor 2Cell ID obtained in step 3) , Neighbor 3 Cell ID, query and obtain the longitude, latitude, tower height, and direction angle information of the serving cell and each adjacent cell;

Step 6) According to the longt_s, latitude lat_s of the serving cell obtained in step 5) and the longt_n and latitude lat_n of each adjacent cell, calculate whether the distance between the serving cell and each adjacent cell is less than the preset threshold, the distance calculation formula: 6371004*arccos {1-[(sin((90-lat_n)*∏/180)*cos(longt_n*∏/180)-sin((90-lat_s)*∏/180)*cos(longt_s*∏/180)) ² +(sin((90-lat_n)*∏/180)*sin(longt_n*∏/180)-sin((90-lat_s)*∏/180)*sin(longt_s*∏/180)) ² +(cos ((90-lat_n)*∏/180)-cos((90-lat_s)*∏/180)) ² ]/2}(meter);

Step 7) The distance between the serving cell and each adjacent cell is less than 10 kilometers, and the location of the mobile user is calculated using the "Method for Realizing Mobile User Positioning Based on the Cell Frequency Weighting Algorithm within a Time Period" (patent application number 201610529639.8);

Step 8) When the distance between the serving cell and each adjacent cell is greater than the preset threshold, then feed back to the operator, measure the actual base station longitude and latitude according to the TAC and Cell ID to the location of the cell's home base station, then correct the base station basic information database, and return Step 4).

The invention solves the problem that the MR data of the measurement report on the wireless side cannot correspond to the IMSI number and the basic information database information of the base station in the past, resulting in large positioning errors.

Claims (2)

1. A method for LTE network calculation IMSI number mobile user position, is characterized in that: the method comprises the steps: Step 1) In the core network signaling call history record CHR database, according to imsi equal to the IMSI number of the positioned mobile terminal and mme_uesiap_utc equal to the time TIME to be positioned, query the device_num, mme_uesiap, enodeb_id of the IMSI number at this time TIME; Step 2) extract MMEGI and MMEC from step 1) device_num: set device_num to DN0DN1DN2DN3DN4DN5DN6DN7DN8DN9DN10DN11DN12DN13DN14DN15, the 7th to 10th DN6DN7DN8DN9 is MMEGI, and the 11th to 12th DN10DN11 is MMEC; Step 3) In the MR database, according to MME UE S1AP ID is equal to mme_uesiap in step 1), MMEC is equal to MMEC in step 2), MMEGI is equal to MMEGI in step 2), eNB ID is equal to enodeb_id in step 1), Time is equal to step 1) TIME field of the cell to query the Serving Cell ID of the serving cell and the Neighbor 1 Cell ID, Neighbor 2 Cell ID, and Neighbor 3 Cell ID of each adjacent cell; Step 4) In the base station basic information database, according to the enodeb_id query whose eNB ID is equal to step 1), obtain the TAC value belonging to the base station; Step 5) In the base station basic information database, according to the TAC value obtained in step 4) and the ServingCell ID, Neighbor 1 Cell ID, Neighbor 2 Cell ID, and Neighbor 3 Cell ID obtained in step 3), query the serving cell and each adjacent cell Longitude, latitude, tower height and direction angle information; Step 6) According to the longitude longt_s, latitude lat_s of the serving cell obtained in step 5) and the longitude longt_n and latitude lat_n of each adjacent cell, calculate whether the distance between the serving cell and each adjacent cell is less than a preset threshold, the distance calculation formula is as follows, and the unit is meter : 6371004*arccos{1-[(sin((90-lat_n)*π/180)*cos(longt_n*π/180)-sin((90-lat_s)*π/180)*cos(longt_s*π/180 )) ² +(sin((90-lat_n)*π/180)*sin(longt_n*π/180)-sin((90-lat_s)*π/180)*sin(longt_s*π/180)) ² +(cos((90-lat_n)*π/180)-cos((90-lat_s)*π/180)) ² ]/2}; Step 7) When the distance between the serving cell and each adjacent cell is less than a preset threshold, then calculate the position of the mobile user of a certain IMSI number at this time TIME; When the distance between the serving cell and each adjacent cell is greater than the preset threshold, it will be fed back to the operator, and the actual base station longitude and latitude will be measured according to the TAC and Cell ID to the location of the cell's home base station, and then the basic information database of the base station will be corrected, and return to step 4) . 2. The method for calculating the location of a mobile user with an IMSI number in an LTE network according to claim 1, wherein the preset threshold is 10 kilometers.