CN113709669A - 5G terminal double-card user identification method - Google Patents
5G terminal double-card user identification method Download PDFInfo
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Abstract
The invention relates to a 5G terminal double-card user identification method, which comprises the following steps: preprocessing mobile communication data to obtain a plurality of pieces of key data; determining the grid number of the base station in the key data according to a pre-established base station grid fingerprint database; and performing Hash time window judgment on the key data with the same grid number of the base station, and judging whether the key data is a dual-card user of the same terminal by acquiring the dual-card pairing record. According to the technical scheme, the accuracy and the efficiency of judging the 5G terminal double-card users are improved.
Description
Technical Field
The invention belongs to the technical field of 5G communication, and particularly relates to a 5G terminal double-card user identification method.
Background
At present, the mobile terminal is basically configured with double card slots, but because of the privacy of the terminal, whether the terminal is inserted with two cards or not is difficult to know, and at present, the judgment of massive terminal double-card users can be realized only by a signaling big data platform of an operator.
However, with the arrival of the 5G network, the holding capacity of the 5G terminal is continuously increased, and the judgment of the 5G terminal dual-card user still continues to use the judgment of the original 4G terminal, so that a certain problem occurs, and the judgment of the 5G terminal dual-card user is inaccurate. The reasons for the problems are as follows: 1. the typical 5G terminal, one card 5G network and one card 4G network have different network residences, so that whether the resident positions of the two cards are the same or not cannot be judged; 2. the 5G network is further divided into networks of nsa (hybrid networking) and sa (independent networking) architecture, so that even if two cards reside in the 5G network, the cards may reside in different 5G cells; 3. service triggering, because two cards are in different networks with a high probability, the triggered service may have a certain difference.
Disclosure of Invention
In view of this, the present invention provides a method for identifying a 5G terminal dual-card user, so as to solve the problem of inaccurate judgment of the 5G terminal dual-card user in the prior art.
According to a first aspect of an embodiment of the present application, a method for identifying a 5G terminal dual card user is provided, where the method includes:
preprocessing mobile communication data to obtain a plurality of pieces of key data;
determining the grid number of the base station in the key data according to a pre-established base station grid fingerprint database;
and performing Hash time window judgment on the key data with the same grid number of the base station, and judging whether the key data is a dual-card user of the same terminal by acquiring the dual-card pairing record.
Further, the hash time window judgment is performed on the key data with the same grid number of the base station to obtain the dual card pairing record, including:
sequentially putting key data with the same grid number of a base station into a time window body of a hash table in a streaming mode, making the key data in the time window body of the first hash table as a record 1, making the key data in the time window body of the second hash table as a record 2, making the key data in the time window body of the third hash table as a record 3, and so on;
judging whether other records in the same time window body with the record 1 exist or not, and whether the terminal tac8 of the record 1 is the same, the service type is the same and the terminal imei is different, if so, the record and the record 1 are a double-card matching record; if not, the record 1 is cleared, the time window body of the hash table is subjected to bit complementing, and whether other records in the same time window body with the record 2 exist or not and the terminal tac8 of the record 2 are the same, the service types are the same, the terminal imei is different, and the like.
Further, the preprocessing the mobile communication data to obtain a plurality of pieces of key data includes:
and based on the type of the preset field, carrying out data cleaning on the mobile communication data to obtain the plurality of pieces of key data.
Further, the preset field types include: start time, base station information, terminal tac8, terminal imei, terminal number, type of service, and network information.
Further, the method further comprises: and establishing the pre-established base station grid fingerprint database.
Further, the establishing the pre-established base station grid fingerprint database includes:
determining a grid base point, and dividing geographic positions according to preset grid granularity by taking the grid base point as a starting point to obtain a base station geographic grid;
and acquiring the serial number and longitude and latitude information of each grid unit in the base station geographic grid to obtain the pre-established base station grid fingerprint database.
Further, the obtaining the number of each grid unit in the geographic grid of the base station includes:
setting longitude as abscissa, latitude as ordinate and the grid base point as starting point to establish coordinate axis; the number P of each of the grid cells is determined as follows:
p is N + N M formula (1)
In the above formula, N is the abscissa where the grid unit is located, and M is the ordinate where the grid unit is located.
Further, the obtaining latitude and longitude information of each grid unit in the base station geographic grid includes:
let the coordinate point of the grid base point be (0,0), the longitude and latitude of the grid base point be (long0, lat0), and the longitude and latitude (long N, latM) of the coordinate (N, M) are determined according to the following formula:
in the above formula, d is the distance between the coordinates (0,0) and the coordinates (N, M), α is the azimuth angle between the coordinates (0,0) and the coordinates (N, M), and arc is the radius of the equator;
the longitude and latitude of the four coordinates corresponding to each grid cell is obtained by using the formula (2).
Further, the determining the grid number of the base station in the key data according to the pre-established grid fingerprint database of the base station includes:
and when the longitude and latitude of the base station in the key data belong to the longitude and latitude of four coordinates corresponding to a certain grid unit in the pre-established base station grid fingerprint database, the grid number of the grid unit is the grid number of the base station in the key data.
Further, the method further comprises: determining the reliability of the double-card pairing according to the double-card pairing record, and judging the reliability of the double-card user of the same terminal based on the determined reliability;
the determining the credibility of the double-card pairing according to the double-card pairing record comprises the following steps:
and acquiring the occurrence times of the same double-card pairing record in a preset time period, and determining the credibility of double-card users who are the same terminal according to the occurrence times.
By adopting the technical scheme, the invention can achieve the following beneficial effects: the method comprises the steps of preprocessing mobile communication data to obtain a plurality of pieces of key data, determining the grid number of a base station in the key data according to a pre-established base station grid fingerprint database, judging the hash time window of the key data with the same grid number of the base station, and judging whether the key data is a dual-card user of the same terminal by obtaining a dual-card pairing record, so that the accuracy and efficiency of judging the dual-card user of the 5G terminal are improved.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart illustrating a 5G terminal dual card subscriber identification method according to an exemplary embodiment;
fig. 2 is a diagram illustrating a grid number in a 5G terminal dual-card subscriber identification method according to an exemplary embodiment;
fig. 3 is a schematic diagram illustrating an azimuth angle α in a 5G terminal dual card subscriber identification method according to an exemplary embodiment;
FIG. 4 is a diagram illustrating grid cell coordinates in a 5G terminal dual card subscriber identification method according to an exemplary embodiment;
fig. 5 is a diagram illustrating a time frame in a 5G terminal dual card subscriber identity method according to an exemplary embodiment;
fig. 6 is a schematic structural diagram illustrating a 5G terminal dual-card subscriber identity module according to an exemplary embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Fig. 1 is a flowchart illustrating a 5G terminal dual card subscriber identification method according to an exemplary embodiment, which may be used in a terminal, but is not limited to, as shown in fig. 1, and includes the following steps:
step 101: preprocessing mobile communication data to obtain a plurality of pieces of key data;
step 102: determining the grid number of the base station in the key data according to a pre-established base station grid fingerprint database;
step 103: and performing Hash time window judgment on the key data with the same grid number of the base station, and judging whether the key data is a dual-card user of the same terminal by acquiring the dual-card pairing record.
It should be noted that the mobile communication data of the 4G network is generally S1MME protocol data; the mobile communication data of the 5G network is generally N1N2 protocol data.
According to the method for identifying the double-card user of the 5G terminal, provided by the embodiment of the invention, the mobile communication data is preprocessed to obtain a plurality of pieces of key data, the grid number of the base station in the key data is determined according to the pre-established grid fingerprint library of the base station, the key data with the same grid number of the base station is subjected to Hash time window judgment to judge whether the key data is the double-card user of the same terminal or not by obtaining the double-card pairing record, so that the accuracy and the efficiency of judging the double-card user of the 5G terminal are improved, and a one-point basis is laid for the 5G related service.
Further, step 101 includes:
and based on the preset field type, performing data cleaning on the mobile communication data to obtain a plurality of pieces of key data.
Specifically, the preset field types include: start time, base station information, terminal tac8, terminal imei, terminal number, type of service, and network information.
It is understood that each piece of key data includes start time, base station information, terminal tac8, terminal imei, terminal number, service type, and network information.
In some optional embodiments, the base station information is a cell identifier; the traffic types may include, but are not limited to: power on and off and location update. The network information of the 4G network is 4G, and the network information of the 5G network is 5G.
The IMEI is an International Mobile Equipment Identity (IMEI), which is commonly called a Mobile phone serial number and a Mobile phone "serial number", and is used to identify Mobile communication Equipment such as each independent Mobile phone in a Mobile phone network, and is equivalent to an Identity card of a Mobile phone, and the serial number has 15-17 digits in total. TAC8 is the first 8 digits of imei, (TAC) is a model approval number (6 digits earlier), and is a code for distinguishing the brand and model of a mobile phone.
Further, the method further comprises: and establishing a pre-established base station grid fingerprint database.
Further, establishing a pre-established base station grid fingerprint database, including:
determining a grid base point, and dividing the geographical position according to a preset grid granularity by taking the grid base point as a starting point to obtain a base station geographical grid;
and acquiring the number and longitude and latitude information of each grid unit in the geographical grid of the base station to obtain a pre-established base station grid fingerprint database.
In some embodiments, the predetermined grid granularity may be, but is not limited to, 400 meters by 400 meters. At present, the coverage distance of 5G base stations is about 200 meters, the coverage distance of 4G base stations is about 400 meters, and the grid granularity of 400 x 400 is better as the fingerprint granularity of a fingerprint database according to the experimental data.
Further, acquiring the number of each grid unit in the base station geographic grid includes:
setting longitude as abscissa, latitude as ordinate and grid base point as starting point to establish coordinate axis;
the number P of each grid cell is determined as follows:
p is N + N M formula (1)
In the above formula, N is the abscissa where the grid unit is located, and M is the ordinate where the grid unit is located.
For example, as shown in fig. 2, the calculation process of grid number 1 is P1 + 10 1; the calculation process of grid number 2 is P2 + 20 2.
Further, acquiring latitude and longitude information of each grid unit in the base station geographic grid includes:
let the coordinate point of the grid base point be (0,0) and the longitude and latitude of the grid base point be (long0, lat0), the longitude and latitude (long N, latM) of the coordinate (N, M) are determined as follows:
in the above formula, d is the distance between the coordinates (0,0) and the coordinates (N, M), α is the azimuth angle between the coordinates (0,0) and the coordinates (N, M), and arc is the radius of the equator;
the longitude and latitude of the four coordinates corresponding to each grid cell is obtained by using the formula (2).
For example, as shown in fig. 3, assuming that the true north direction is 0 degrees, the azimuth angle α is as shown in the figure.
It should be noted that the four coordinate points of each grid unit can be obtained by calculating according to the coordinates (0,0) of the grid base point, that is, the starting point (0 point), and matching with the preset grid granularity (400 m × 400).
Further, step 102 includes:
and when the longitude and latitude of the base station in the key data are within the longitude and latitude of four coordinates corresponding to a certain grid unit in a pre-established base station grid fingerprint database, the grid number of the grid unit is the grid number of the base station in the key data.
For example, as shown in fig. 4, assuming that four coordinate points of the grid cell with the grid number 5 are (N1, M1), (N2, M1), (N1, M2), (N2, M2), respectively, if the latitude and longitude information of one base station is (X, Y), if the longitude X of the base station is between known grid longitudes N1 and N2 and the latitude Y of the base station is between known grid latitudes M1 and M2, the base station belongs to the grid cell and performs grid label printing on the base station, that is, the grid number of the base station is 5.
Further, step 103 includes:
sequentially putting key data with the same grid number of a base station into a time window body of a hash table in a streaming mode, making the key data in the time window body of the first hash table as a record 1, making the key data in the time window body of the second hash table as a record 2, making the key data in the time window body of the third hash table as a record 3, and so on;
judging whether other records in the same time window body with the record 1 exist or not, and whether the terminal tac8 of the record 1 is the same, the service type is the same and the terminal imei is different, if so, the record and the record 1 are a double-card matching record; if not, the record 1 is cleared, the time window body of the hash table is subjected to bit filling, whether other records in the same time window body with the record 2 exist or not and whether the terminal tac8 of the record 2 is the same, the service type is the same, the terminal imei is different, and the like are judged.
It should be noted that, in the embodiment of the present invention, the time of the time window is not limited, and may be selected by a person skilled in the art according to experimental data, and in some embodiments, the time window may be set to be, but is not limited to, 5 seconds.
For example, as shown in fig. 5, assuming that the terminal tac8 of record 3 and record 1 in the time window is the same, the service type is the same, and the terminal imei is different, record 3 and record 1 are a dual-card paired record;
if no record exists in the records 2-4, the record is the same as the terminal tac8 of the record 1, the service type is the same, and the terminal imei is different, the record 1 is cleared; and (5) complementing the position of the record 5, and continuing to judge whether a certain record in the records 3-5 in the time window body is the same as the terminal tac8 of the record 1, the same in service type and different in terminal imei, and so on.
Because the preliminarily judged terminal user may have the influence of special conditions such as deviation of judgment logic or fitting degree of a base station grid fingerprint database, reliability judgment needs to be carried out on the 5G terminal dual-card user, reliability label printing needs to be carried out on the terminal, and the reliability of dual-card pairing needs to be determined according to the dual-card pairing record. Therefore, further, the method further comprises:
step 104: and determining the reliability of the double-card pairing according to the double-card pairing record, and judging the reliability of the double-card user of the same terminal based on the determined reliability.
Specifically, determining the reliability of the dual-card pairing according to the dual-card pairing record includes:
and acquiring the occurrence times of the same double-card pairing record in a preset time period, and determining the credibility of double-card users who are the same terminal according to the occurrence times.
For example, when the same dual-card pairing record appears once within a preset time period, the reliability of the dual-card pairing record is zero;
when the same double-card matching record occurs twice within a preset time period, the reliability of the double-card matching record is 50%;
when the same double-card matching record appears three times within a preset time period, the credibility of the double-card matching record is 60%;
when the same double-card matching record appears four times in a preset time period, the credibility of the double-card matching record is 70%;
when the same double-card matching record occurs five times within a preset time period, the reliability of the double-card matching record is 80%;
when the same double-card matching record appears six times in a preset time period, the reliability of the double-card matching record is 90%;
when the same double-card matching record appears seven times or more in a preset time period, the credibility of the double-card matching record is 100%.
In some embodiments, the confidence level of the same two-card pair record is less than 50% when the same two-card pair record occurs once within a preset time period.
It can be understood that the operator can automatically determine whether the users belonging to the dual cards are the same according to the credibility of the dual card pairing record or the dual card pairing record. The higher the credibility of the double-card matching record is, the higher the probability that the double cards belong to the same user is.
It should be noted that, the credibility of the same double-card matching record appearing once in the preset time period is zero, and the double-card matching record can be cleared, because the reason may be a passer or an identification error, the significance to local marketing is not great. When the same double-card pairing record occurs twice within a preset time period (namely, a record pair with larger double-card flow), the reliability of the double-card pairing record is 50%, because the general user may use a 5G card to surf the internet and the record pair is relatively fixed.
It should be further noted that, in the embodiments of the present invention, the preset time period is not limited, and may be set by a person skilled in the art according to experimental data or actual requirements, and in some embodiments, the preset time period may be, but is not limited to, one month.
According to the method for identifying the double-card users of the 5G terminal, provided by the embodiment of the invention, the mobile communication data is preprocessed to obtain a plurality of pieces of key data, the grid numbers of the base stations in the key data are determined according to the pre-established grid fingerprint library of the base stations, the key data with the same grid numbers of the base stations are subjected to Hash time window judgment to judge whether the key data are the double-card users of the same terminal or not by obtaining the double-card pairing records, the reliability of the double-card pairing is determined according to the double-card pairing records, the reliability of the double-card users of the same terminal is judged based on the determined reliability, and the accuracy and the efficiency of judging the double-card users of the 5G terminal are improved.
The embodiment of the invention also provides a readable storage medium, wherein an executable program is stored on the readable storage medium, and the executable program realizes the steps of the 5G terminal double-card user identification method when being executed by a processor.
In order to implement the above-mentioned 5G terminal dual-card user identification method in a coordinated manner, an embodiment of the present invention provides a 5G terminal dual-card user identification apparatus, and with reference to fig. 6, the apparatus includes:
the mobile communication device comprises a preprocessing unit, a data processing unit and a data processing unit, wherein the preprocessing unit is used for preprocessing mobile communication data to acquire a plurality of pieces of key data;
the numbering unit is used for determining the grid number of the base station in the key data according to a pre-established base station grid fingerprint database;
and the Hash time window unit is used for carrying out Hash time window judgment on the key data with the same grid number of the base station and judging whether the key data is a dual-card user of the same terminal or not by acquiring the dual-card pairing record.
It should be noted that the mobile communication data of the 4G network is generally S1MME protocol data; the mobile communication data of the 5G network is generally N1N2 protocol data.
Further, the preprocessing unit is specifically configured to:
and based on the preset field type, performing data cleaning on the mobile communication data to obtain a plurality of pieces of key data.
Specifically, the preset field types include: start time, base station information, terminal tac8, terminal imei, terminal number, type of service, and network information.
Further, the apparatus further comprises: and the fingerprint database establishing unit is used for establishing a pre-established base station grid fingerprint database.
Specifically, the fingerprint database establishing unit is specifically configured to:
determining a grid base point, and dividing the geographical position according to a preset grid granularity by taking the grid base point as a starting point to obtain a base station geographical grid;
and acquiring the number and longitude and latitude information of each grid unit in the geographical grid of the base station to obtain a pre-established base station grid fingerprint database.
In some embodiments, the predetermined grid granularity may be, but is not limited to, 400 meters by 400 meters. At present, the coverage distance of 5G base stations is about 200 meters, the coverage distance of 4G base stations is about 400 meters, and the grid granularity of 400 x 400 is better as the fingerprint granularity of a fingerprint database according to the experimental data.
Further, acquiring the number of each grid unit in the base station geographic grid includes:
setting longitude as abscissa, latitude as ordinate and grid base point as starting point to establish coordinate axis;
the number P of each grid cell is determined as follows:
p is N + N M formula (1)
In the above formula, N is the abscissa where the grid unit is located, and M is the ordinate where the grid unit is located.
Further, acquiring latitude and longitude information of each grid unit in the base station geographic grid includes:
let the coordinate point of the grid base point be (0,0) and the longitude and latitude of the grid base point be (long0, lat0), the longitude and latitude (long N, latM) of the coordinate (N, M) are determined as follows:
in the above formula, d is the distance between the coordinates (0,0) and the coordinates (N, M), α is the azimuth angle between the coordinates (0,0) and the coordinates (N, M), and arc is the radius of the equator;
the longitude and latitude of the four coordinates corresponding to each grid cell is obtained by using the formula (2).
Further, the numbering unit is specifically configured to:
and when the longitude and latitude of the base station in the key data are within the longitude and latitude of four coordinates corresponding to a certain grid unit in a pre-established base station grid fingerprint database, the grid number of the grid unit is the grid number of the base station in the key data.
Further, the hash time window unit is specifically configured to:
sequentially putting key data with the same grid number of a base station into a time window body of a hash table in a streaming mode, making the key data in the time window body of the first hash table as a record 1, making the key data in the time window body of the second hash table as a record 2, making the key data in the time window body of the third hash table as a record 3, and so on;
judging whether other records in the same time window body with the record 1 exist or not, and whether the terminal tac8 of the record 1 is the same, the service type is the same and the terminal imei is different, if so, the record and the record 1 are a double-card matching record; if not, the record 1 is cleared, the time window body of the hash table is subjected to bit complementing, and whether other records in the same time window body with the record 2 exist or not and the terminal tac8 of the record 2 are the same, the service types are the same, the terminal imei is different, and the like.
Further, the apparatus further comprises: and the credibility unit is used for determining the credibility of the double-card pairing according to the double-card pairing record and judging the reliability of the double-card user of the same terminal based on the determined credibility.
Specifically, determining the reliability of the dual-card pairing according to the dual-card pairing record includes:
and acquiring the occurrence times of the same double-card pairing record in a preset time period, and determining the credibility of double-card users who are the same terminal according to the occurrence times.
For example, when the same two-card pairing record appears once within a preset time period, the two-card pairing record is discarded;
when the same double-card matching record occurs twice within a preset time period, the reliability of the double-card matching record is 50%;
when the same double-card matching record appears three times within a preset time period, the credibility of the double-card matching record is 60%;
when the same double-card matching record appears four times in a preset time period, the credibility of the double-card matching record is 70%;
when the same double-card matching record occurs five times within a preset time period, the reliability of the double-card matching record is 80%;
when the same double-card matching record appears six times in a preset time period, the reliability of the double-card matching record is 90%;
when the same double-card matching record appears seven times or more in a preset time period, the credibility of the double-card matching record is 100%.
In some embodiments, the confidence level of the same two-card pair record is less than 50% when the same two-card pair record occurs once within a preset time period.
It can be understood that the operator can automatically determine whether the users belonging to the dual cards are the same according to the credibility of the dual card pairing record or the dual card pairing record. The higher the credibility of the double-card matching record is, the higher the probability that the double cards belong to the same user is.
It should be noted that, the credibility of the same double-card matching record appearing once in the preset time period is zero, and the double-card matching record can be cleared, because the reason may be a passer or an identification error, the significance to local marketing is not great. When the same double-card pairing record occurs twice within a preset time period (namely, a record pair with larger double-card flow), the reliability of the double-card pairing record is 50%, because the general user may use a 5G card to surf the internet and the record pair is relatively fixed.
It should be further noted that, in the embodiments of the present invention, the preset time period is not limited, and may be set by a person skilled in the art according to experimental data or actual requirements, and in some embodiments, the preset time period may be, but is not limited to, one month.
According to the 5G terminal double-card user identification device provided by the embodiment of the invention, the mobile communication data is preprocessed through the preprocessing unit to obtain a plurality of pieces of key data, the numbering unit determines the grid number of the base station in the key data according to the pre-established base station grid fingerprint library, the Hash time window unit judges the Hash time window of the key data with the same grid number of the base station, whether the key data is a double-card user of the same terminal is judged through obtaining the double-card pairing record, the credibility unit determines the credibility of the double-card pairing according to the double-card pairing record, the reliability of the double-card user of the same terminal is judged based on the determined credibility, and the accuracy and the efficiency of judging the 5G terminal double-card user are improved.
It is to be understood that the apparatus embodiments provided above correspond to the method embodiments described above, and corresponding specific contents may be referred to each other, which are not described herein again.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A5G terminal double-card user identification method is characterized by comprising the following steps:
preprocessing mobile communication data to obtain a plurality of pieces of key data;
determining the grid number of the base station in the key data according to a pre-established base station grid fingerprint database;
and performing Hash time window judgment on the key data with the same grid number of the base station, and judging whether the key data is a dual-card user of the same terminal by acquiring the dual-card pairing record.
2. The method according to claim 1, wherein the performing hash time window determination on the key data with the same grid number of the base station to obtain the dual card pairing record comprises:
sequentially putting key data with the same grid number of a base station into a time window body of a hash table in a streaming mode, making the key data in the time window body of the first hash table as a record 1, making the key data in the time window body of the second hash table as a record 2, making the key data in the time window body of the third hash table as a record 3, and so on;
judging whether other records in the same time window body with the record 1 exist or not, and whether the terminal tac8 of the record 1 is the same, the service type is the same and the terminal imei is different, if so, the record and the record 1 are a double-card matching record; if not, the record 1 is cleared, the time window body of the hash table is subjected to bit complementing, and whether other records in the same time window body with the record 2 exist or not and the terminal tac8 of the record 2 are the same, the service types are the same, the terminal imei is different, and the like.
3. The method of claim 1, wherein the preprocessing the mobile communication data to obtain several pieces of key data comprises:
and based on the type of the preset field, carrying out data cleaning on the mobile communication data to obtain the plurality of pieces of key data.
4. The method of claim 3, wherein the preset field types comprise: start time, base station information, terminal tac8, terminal imei, terminal number, type of service, and network information.
5. The method of claim 1, further comprising: and establishing the pre-established base station grid fingerprint database.
6. The method of claim 5, wherein the creating the pre-established base station grid fingerprint database comprises:
determining a grid base point, and dividing geographic positions according to preset grid granularity by taking the grid base point as a starting point to obtain a base station geographic grid;
and acquiring the serial number and longitude and latitude information of each grid unit in the base station geographic grid to obtain the pre-established base station grid fingerprint database.
7. The method of claim 6, wherein obtaining the number of each grid cell in the geographic grid of the base station comprises:
setting longitude as abscissa, latitude as ordinate and the grid base point as starting point to establish coordinate axis;
the number P of each of the grid cells is determined as follows:
p is N + N M formula (1)
In the above formula, N is the abscissa where the grid unit is located, and M is the ordinate where the grid unit is located.
8. The method of claim 7, wherein obtaining latitude and longitude information for each grid cell in the geographic grid of the base station comprises:
let the coordinate point of the grid base point be (0,0), the longitude and latitude of the grid base point be (long0, lat0), and the longitude and latitude (long N, latM) of the coordinate (N, M) are determined according to the following formula:
in the above formula, d is the distance between the coordinates (0,0) and the coordinates (N, M), α is the azimuth angle between the coordinates (0,0) and the coordinates (N, M), and arc is the radius of the equator;
the longitude and latitude of the four coordinates corresponding to each grid cell is obtained by using the formula (2).
9. The method of claim 6, wherein determining the grid number of the base station in the key data according to a pre-established grid fingerprint database of the base station comprises:
and when the longitude and latitude of the base station in the key data belong to the longitude and latitude of four coordinates corresponding to a certain grid unit in the pre-established base station grid fingerprint database, the grid number of the grid unit is the grid number of the base station in the key data.
10. The method of claim 1, further comprising: determining the reliability of the double-card pairing according to the double-card pairing record, and judging the reliability of the double-card user of the same terminal based on the determined reliability;
the determining the credibility of the double-card pairing according to the double-card pairing record comprises the following steps:
and acquiring the occurrence times of the same double-card pairing record in a preset time period, and determining the credibility of double-card users who are the same terminal according to the occurrence times.
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