CN116471662A

CN116471662A - Search positioning method, device and storage medium based on mobile communication network

Info

Publication number: CN116471662A
Application number: CN202310589491.7A
Authority: CN
Inventors: 戈东; 吴岩; 舒康
Original assignee: Shenzhen Skycomm Co ltd
Current assignee: Shenzhen Skycomm Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-07-21

Abstract

The embodiment of the application provides a search positioning method, a search positioning device and a storage medium based on a mobile communication network. The method comprises the steps of receiving a positioning event message from the background management system, and determining a reference frequency point of a reference frequency band needing to be searched for positioning preferentially according to package subscription conditions of one or more mobile phone numbers in the received positioning event message; acquiring the IMSI of the user equipment working at the reference frequency point in the signal coverage area; sending the IMSI of the user equipment to the background management system; if a positioning success message from the background management system is received, verifying the user equipment consistent with the IMSI of the target user; and if the verification is passed, positioning the user equipment. By adopting the embodiment of the application, the efficiency of searching and positioning the user equipment by the searching and positioning equipment is improved.

Description

Search positioning method, device and storage medium based on mobile communication network

Technical Field

The present disclosure relates to the field of wireless communications technologies, and in particular, to a search positioning method, apparatus, and storage medium based on a mobile communication network.

Background

The communication searching and positioning equipment is based on the principle of wireless communication base station technology, provides stronger signals than a public network base station through simulating broadcast induction signals of a mobile communication network (mobile/communication/telecommunication) of an operator, enables surrounding mobile phones or terminals in standby state to detect position area changes, initiates a position area updating process, registers and reports IMEI/IMSI (4G) or SUPI/SUCI (5G) to the communication searching and positioning equipment, completes public network user terminal information acquisition in a coverage area, transmits acquired IMEI/IMSI or SUPI/SUCI to a background data management system center in real time in a wired or wireless backhaul mode, enables a user to be connected to an acquisition center through client software and a background management system to see information of the acquired mobile terminals in real time, and can be widely applied to related departments such as national security, public security, army and the like, and field/desert/offshore emergency rescue scenes.

Because network access parameters and frequency points of different networks are different, namely PLMNs of three operators of mobile, communication and telecom are different, and meanwhile, supported frequency bands and frequency points are different, 5G frequency spectrums supported by mobile are 2515-2675MHz and 4800-4900MHz, telecom is 3400-3500MHz, communication is 3500-3600MHz, meanwhile, telecom, communication and broadcasting share the frequency band of 3300-3400Mhz indoors, the prior art can adopt a full-frequency band and frequency point traversal search method when searching and positioning terminal equipment of a plurality of operators at the same time, which can consume quite much time and reduce search and positioning efficiency.

Disclosure of Invention

The embodiment of the application provides a search positioning method, a device and a storage medium based on a mobile communication network, which can improve the efficiency of searching and positioning user equipment by search positioning equipment without full-band traversal type search.

In a first aspect, an embodiment of the present application provides a search positioning method based on a mobile communication network, which is applied to a search positioning device of a search positioning system, where the search positioning system includes the search positioning device, a user equipment, a public network base station, and a background management system, and the search positioning device is communicatively connected with the background management system through the public network base station, where the method includes:

receiving a positioning event message from the background management system, wherein the positioning event message comprises package subscription conditions of one or more mobile phone numbers of a target user to be positioned and an International Mobile Subscriber Identity (IMSI);

determining a reference frequency point of a reference frequency band needing to be searched and positioned preferentially according to package subscription conditions of one or more mobile phone numbers in the received positioning event message;

acquiring the IMSI of the user equipment working at the reference frequency point in the signal coverage area;

sending the IMSI of the user equipment to the background management system;

If a positioning success message from the background management system is received, verifying the user equipment consistent with the IMSI of the target user, wherein the positioning success message comprises a response message sent by the background management system after determining that the user equipment consistent with the IMSI of the target user exists;

and if the verification is passed, positioning the user equipment.

Specifically, the method aims at the existing full-band traversal type searching method applied when detecting the terminal equipment, and provides a method for reducing the frequency band range to be detected according to the subscription condition of the mobile phone package of the target user to be positioned so as to improve the searching and positioning efficiency; generally, the mobile phone package includes call duration and flow, the flow can be divided into intra-provincial flow and national flow according to the use region, and can be divided into 4G flow and 5G flow according to the attribute, and the frequency band and/or frequency point accessed by the target user, namely the reference frequency band and the reference frequency point can be estimated according to the content contained in the mobile phone package.

After the reference frequency band and the reference frequency point are determined, acquiring the IMSI of the user equipment in the signal coverage range of the search equipment on the reference frequency band and the reference frequency point; and comparing the acquired IMSI of the user equipment with the IMSI of the known target user to determine whether the target user is in the signal coverage area, and if so, performing further accurate positioning.

In still another possible implementation manner of the first aspect, the determining, according to a package subscription condition of one or more mobile phone numbers in the received positioning event message, a reference frequency point of a reference frequency band that needs to be searched for positioning preferentially includes:

determining an operator to which the one or more mobile phone numbers belong, and a frequency band and a frequency point of the operator according to the number segments of the one or more mobile phone numbers;

according to the package subscription condition of the one or more mobile phone numbers, the frequency band and the frequency point range of the operator are reduced;

and determining the reduced frequency band and frequency point of the operator as the reference frequency point of the reference frequency band needing to be searched and positioned preferentially.

Specifically, first, the first three digits of the one or more mobile phone numbers are roughly estimated, and the operators of the one or more mobile phone numbers, such as the chinese electric signal segment, are determined: 133. 149, 153, 173, 177, 180, 181, 189, 191, 199; chinese Unicom number section: 130. 131, 132, 145, 155, 156, 166, 171, 175, 176, 185, 186; chinese movement number section: 134 (0-8), 135, 136, 137, 138, 139, 147, 150, 151, 152, 157, 158, 159, 172, 178, 182, 183, 184, 187, 188, 198, and then interact with the corresponding operator to determine that the mobile phone number of the target user is attributed to the corresponding operator.

The communication frequency bands divided by each operator are different, for example, the china mobile 4G frequency: TD-LTE frequency: 1880-1900MHz, 2320-2370MHz, 2575-2635MHz; chinese telecommunication 4G frequency: TD-LTE frequency: 2370-2390MHz, 2635-2655MHz, fdd-LTE frequency: 1755-1785MHz, 1850-1880MHz; china Unicom 4G frequency: TD-LTE frequency: 2300-2320MHz, 2555-2575MHz, FDD-LTE frequency: 1755-1765MHz, 1850-1860MHz. The LTE is a network system, and there are two current 4G standards based on LTE: LTE-FDD and LTE-TDD (TD-LTE), respectively. Both standards are based on different branches of LTE, TD-LTE for hot spot area coverage and FDD for wide area coverage.

Therefore, after the mobile phone number of the target user is determined, the frequency band and the frequency point of the preferential detection can be determined according to the operator to which the mobile phone number belongs, further, according to the mobile phone package condition subscribed by the mobile phone number, such as a 4G package or a 5G package, the frequency band and the frequency point range of the preferential detection are reduced, further, according to the mobile phone package subscription condition, a further supplementary frequency band and the frequency point range, such as a wifi frequency band, are determined, and therefore the detection efficiency is improved.

In still another possible implementation manner of the first aspect, the narrowing the range of the frequency band and the frequency point of the operator according to the package subscription condition of the one or more mobile phone numbers includes:

acquiring usage records of a plurality of mobile phone numbers of the target user;

determining part of mobile phone numbers of the last use time of the mobile phone numbers within a preset period according to the use records of the mobile phone numbers of the target user;

and according to the package subscription condition of the part of mobile phone numbers, the frequency band and the frequency point range of the operator are reduced.

According to the embodiment, through analyzing the use frequency of the mobile phone number of the target user, the mobile phone number frequently used by the target user is determined, the frequency band of an operator to which the frequently used mobile phone number belongs is used as a reference frequency band, and according to the details of the mobile phone package of the frequently used mobile phone number, the range of the reference frequency band is reduced, or the range of the reference frequency point is reduced.

according to the use records of a plurality of mobile phone numbers of the target user, confirming whether special conditions exist in the use of the mobile phone numbers or not, wherein the special conditions comprise alternate use or random switching use;

if special conditions exist, pre-judging the pre-used mobile phone numbers of the target user according to the use records of the plurality of mobile phone numbers of the target user;

and according to the package subscription condition of the pre-used mobile phone number of the target user, the frequency band and the frequency point range of the operator are reduced.

According to the embodiment, the mobile phone usage rule of the target user is determined by analyzing the mobile phone usage record of the target user, the mobile phone number pre-used by the target user is estimated according to the mobile phone usage rule, and then the frequency band and the frequency point range of the preferential detection are reduced.

In a further possible implementation manner of the first aspect, the IMSI of the user equipment operating at the reference frequency point within the acquisition signal coverage area includes:

broadcasting and transmitting synchronous information of a virtual working cell and virtual working cell parameters to a target area in a signal coverage area, and enabling the priority of the virtual working cell to be higher than the priority of each cell in the target area by adjusting the reselection bias parameters of the virtual working cell so as to enable user equipment in the target area to initiate a location area update request;

and receiving a location area update request of the user equipment in the target area, starting a location area update flow, and acquiring the IMSI of the user equipment in the target area.

The embodiment aims at the prior art that in the process of monitoring and controlling the communication of the mobile terminal, the communication information of the mobile communication terminal and the base station is intercepted for a long time, and when the mobile user terminal is updated in a position area and periodically updated, the mobile user terminal information is obtained, so that the method for monitoring and controlling the communication of the mobile user is realized, but if the mobile communication terminal does not move, the updating in the position area is impossible, and in order to lighten the communication burden and increase the system capacity, the periodic position updating period is often set to be very long, so that the waiting time for monitoring and controlling the mobile communication is long and uncertain;

Determining parameters of a virtual working cell by acquiring parameter information of each cell in a target area, broadcasting and transmitting synchronous information of the virtual working cell and the parameter information of the virtual working cell to the target area, receiving a position area update request of a mobile terminal in the target area by adjusting the priority of the virtual cell, starting a position area update process, acquiring user identity information of the user terminal in the target area, and monitoring the mobile terminal with specific position in the target area according to the acquired user identity information of the user terminal in the target area.

In a further possible implementation manner of the first aspect, the verifying the user equipment consistent with the IMSI of the target user if the positioning success message is received from the background management system includes:

initiating paging to user equipment consistent with the IMSI of the target user through the IMSI;

forwarding an authentication request of a public network base station and an authentication response of the user equipment according to the paging response of the user equipment to finish authentication;

sending a mobile phone number inquiry short message containing the IMSI to a public network base station;

analyzing the response message sent by the public network base station to obtain the reference mobile phone number of the user equipment;

And if the reference mobile phone number is detected to be consistent with the mobile phone number in one or more mobile phone numbers of the target user, determining that the target user equipment passes verification.

In this embodiment, the paging response and the authentication response of the user equipment to be verified are forwarded to obtain the mobile phone number including the IMSI of the user equipment to be verified sent by the public network base station for detection, and if the reference mobile phone number is detected to be consistent with the mobile phone number in the one or more mobile phone numbers of the target user, the target user equipment is determined to pass the verification, and the identity of the user equipment consistent with the IMSI of the target user is further determined, which is generally applied to the scene of detecting codes by public security and special police.

In a further possible implementation manner of the first aspect, after the locating the user equipment if the verification is passed, the method further includes:

adjusting the decoding individual equipment to enable the decoding individual equipment to be in downlink synchronization with the searching and positioning equipment and align with a frame head;

reserving a fixed Resource Block (RB), modulating and encoding strategy (MCS) to target user equipment;

transmitting the cell radio network temporary identifier C-RNTI to decoding individual equipment so that the decoding individual equipment can demodulate an uplink signal of target user equipment;

When the signal intensity from the signal of the uplink shared channel PUSCH of the target user equipment to the decoding individual equipment and the signal intensity from the surrounding interference signals to the decoding individual equipment are equal, comparing the signal intensities of the decoding individual equipment in two directions of the target user equipment and the target user equipment not to determine the direction of the target user equipment.

In this embodiment, the individual device decodes the individual device to accurately locate the user device consistent with the IMSI of the target user, specifically, the locating vehicle reserves a fixed RB, MCS (Modulation and Coding Scheme, modulation and coding strategy) for the user device consistent with the IMSI of the target user, and sends a C-RNTI (CELL Radio Network TemporyIdentity, cell radio network temporary identifier) to the individual, so that the individual can demodulate an uplink signal of the user device consistent with the IMSI of the target user, and when the uplink PUSCH (Physical uplink shared channel, uplink shared channel) signal of the user device consistent with the IMSI of the target user reaches the individual strength and the surrounding interference signal strength in the opposite directions, the individual is compared with the directions of the individual facing the target UE and not facing the target UE, and the decoding success rate of the individual is high due to the directional antenna. At this time, the directions of the target UE can be indicated by multiplying the signal intensities of all the solutions by the weighted value, and the problem of multi-interference scenes of users and individual directivity is solved through the process.

In a further possible implementation manner of the first aspect, the background management system is a package subscription condition of one or more mobile phone numbers of the target user obtained through basic identity information of the target user to be located.

The background management system is a background system or a server of the searching and positioning equipment applying the method, and can interact with a public security system and an operator server so as to collect basic identity information of a target user to be positioned and one or more mobile phone numbers of the target user, and further obtain package subscription conditions of the one or more mobile phone numbers of the target user.

In a further possible implementation manner of the first aspect, the IMSI of the one or more mobile phone numbers of the target user may be a SUPI, sui.

The difference between SUPI and SUCI is UE terminal identification, in that IMSI is wireless network terminal (4G) identification, SUPI is 5G non-encryption terminal identification, which is generally equal to IMSI, SUCI is 5G encryption terminal identification, and SUPI can be obtained after decryption.

In a mobile communication system, an operator typically assigns a unique identity to each SIM card, which is an IMSI in 4G and a SUPI (subscriber permanent identifier) in 5G, which is more than a "identity card" of the subscriber. Since 5G decides the mechanism to introduce the public key, the public key is used for disclosure and encryption, and the private key is used for retention and decryption. Storing the public key in the mobile phone end and the private key in the operator; therefore, only the operator can decrypt the real identity information of the mobile phone, an attacker can only obtain the encrypted information, and the real identity information of the user cannot be solved without a private key.

Therefore, when the embodiment is applied, after the SUPI of the user equipment within the signal coverage area is collected, the SUPI is sent to the operator server for comparison, so as to obtain the sui of the target user, and further determine whether the collected user equipment is the target user equipment.

In a second aspect, an embodiment of the present application provides a mobile communication network based search positioning device, where the mobile communication network based search positioning device at least includes a receiving unit, a determining unit, an acquisition unit, a first sending unit, a verification unit, and an adsorption unit. The mobile communication network-based search positioning device is configured to implement the method described in any implementation manner of the first aspect, where the description of the receiving unit, the determining unit, the collecting unit, the first sending unit, the verifying unit, and the adsorbing unit is as follows:

a receiving unit, configured to receive a positioning event message from the background management system, where the positioning event message includes a package subscription condition of one or more mobile phone numbers of a target user to be positioned and an international mobile subscriber identity IMSI, where the package subscription condition includes a 4G package or a 5G package;

the determining unit is used for determining a reference frequency point of a reference frequency band needing to be searched and positioned preferentially according to package subscription conditions of one or more mobile phone numbers in the received positioning event message;

The acquisition unit is used for acquiring the IMSI of the user equipment working at the reference frequency point in the signal coverage area;

a first sending unit, configured to send an IMSI of the user equipment to the background management system;

the verification unit is used for verifying the user equipment consistent with the IMSI of the target user if a positioning success message from the background management system is received, wherein the positioning success message comprises a response message sent by the background management system after the user equipment consistent with the IMSI of the target user is determined to exist;

and the adsorption unit is used for positioning the user equipment if the verification is passed.

In a further possible implementation manner of the second aspect, the determining unit is specifically configured to:

Therefore, after determining the mobile phone number of the target user, the frequency band and the frequency point to be preferentially detected can be determined according to the operator to which the mobile phone number belongs, and further, according to the mobile phone package condition subscribed by the mobile phone number, for example, 4G package

Meal or 5G package reduces above-mentioned frequency channel and frequency point scope that detects of priority, and is further, confirms further supplementary frequency channel and frequency point scope according to the cell-phone package subscription condition, for example, wifi frequency channel to improve the efficiency of detecting.

In a further possible implementation manner of the second aspect, in the aspect of narrowing the range of the frequency band and the frequency point of the operator according to the package subscription situation of the one or more mobile phone numbers, the determining unit is specifically configured to:

In a further possible implementation manner of the second aspect, the acquisition unit is specifically configured to:

In a further possible implementation manner of the second aspect, the verification unit is specifically configured to:

In a further possible implementation manner of the second aspect, the apparatus further includes:

the adjusting unit is used for adjusting the decoding individual equipment to enable the decoding individual equipment to be in downlink synchronization with the searching and positioning equipment and align with the frame head;

a modulation unit, configured to reserve a fixed resource block RB, and modulate and encode a policy MCS to a target user equipment;

the second sending unit is used for sending the cell radio network temporary identifier C-RNTI to the decoding individual equipment so that the decoding individual equipment can demodulate the uplink signal of the target user equipment;

and the comparison unit is used for comparing the signal strengths of the decoding individual equipment in two directions of the target user equipment and the target user equipment when the signal strength of the uplink shared channel PUSCH of the target user equipment to the decoding individual equipment is equal to the signal strength of the surrounding interference signals to the decoding individual equipment so as to determine the direction of the target user equipment.

In a third aspect, embodiments of the present application provide a mobile communication network-based search positioning device, including a processor, a memory, and a communication interface; a memory having a computer program stored therein; the communication interface, when executed by the processor, is adapted to transmit and/or receive data, and the mobile communication network based search positioning device is adapted to perform the method as described in the first aspect or any of the possible implementations of the first aspect.

It should be noted that the processor included in the mobile communication network-based search positioning apparatus described in this aspect may be a processor (for convenience and distinction, a dedicated processor) dedicated to performing the methods, or may be a processor that performs the methods by calling a computer program, for example, a general-purpose processor. In the alternative, the at least one processor may also include both special purpose and general purpose processors.

Alternatively, the above-mentioned computer program may be stored in a memory. For example, the Memory may be a non-transitory (non-transitory) Memory, such as a Read Only Memory (ROM), which may be integrated on the same device as the processor, or may be separately disposed on different devices, and the type of the Memory and the manner in which the Memory and the processor are disposed in the embodiments of the present application are not limited.

In a possible embodiment, the at least one memory is located outside the mobile communication network based search positioning device.

In a further possible embodiment, the at least one memory is located within the mobile communication network based search positioning device.

In a further possible embodiment, a part of the memory of the at least one memory is located inside the mobile communication network based search positioning device and another part of the memory is located outside the mobile communication network based search positioning device.

In this application, the processor and the memory may also be integrated in one device, i.e. the processor and the memory may also be integrated together.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having a computer program stored therein, which when executed on at least one processor, implements the method described in the foregoing first aspect or any of the alternatives of the first aspect.

In a fifth aspect, the present application provides a computer program product comprising a computer program for implementing the method of the first aspect or any of the alternatives of the first aspect, when said program is run on at least one processor.

Alternatively, the computer program product may be a software installation package, which may be downloaded and executed on a computing device in case the aforementioned method is required.

The technical solutions provided in the third to fifth aspects of the present application may refer to the beneficial effects of the technical solutions in the first aspect and the second aspect, and are not described herein again.

Drawings

The drawings that are used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic architecture diagram of a search positioning system based on a mobile communication network according to an embodiment of the present application;

fig. 2 is a flow chart of a search positioning method based on a mobile communication network according to an embodiment of the present application;

fig. 3 is a flowchart of a method for determining a reference frequency band and a reference frequency point according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a search positioning device based on a mobile communication network according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a search positioning device based on a mobile communication network according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The following describes a system architecture applied to the embodiment of the present application. It should be noted that, the system architecture and the service scenario described in the present application are for more clearly describing the technical solution of the present application, and do not constitute a limitation on the technical solution provided in the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of the new service scenario, the technical solution provided in the present application is also applicable to similar technical problems.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a search positioning system based on a mobile communication network according to an embodiment of the present application, where the system includes a search positioning device 11 (also called a code detection device, a code detection apparatus), a user equipment 12, a public network base station 13, and a background management system 14, and the search positioning device 11 establishes a communication connection with the background management system 14, where:

the searching and positioning device 11 is a device applied to various searching or searching and rescuing scenes such as public security, national security, search and rescue, and the IMSI sequence of the user device 12 can be obtained by using the searching and positioning method provided by the application, so that services are provided for the fields of national defense and public security.

The user equipment 12 is a mobile phone, a mobile terminal, a conference teaching tablet, an industrial control computer and other terminal equipment provided with a SIM card, the user equipment 12 is equipment within the signal coverage range of the public network base station 13, in general, the user equipment 12 establishes communication connection with the public network base station 13, and after being trapped by the signal of the search positioning equipment 11, the user equipment 12 is disconnected with the public network base station 13 and establishes connection with the search positioning equipment 11.

The public network base station 13 is the service base station with the best signal in the area where the target user is located, and the public network base station 13 can establish communication connection with the search positioning equipment 11 to perform information interaction.

The background management system 14 may be a server or a server cluster formed by a plurality of servers, or may be a cloud server providing cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, big data, artificial intelligence platforms and other basic cloud computing services, or may be a terminal device such as a mobile phone, a mobile terminal, a conference teaching tablet, an industrial control computer, etc., and may communicate with the search positioning device 11 through the public network base station 13, and perform screening on the IMSI of the user device 12 obtained by the search positioning device 11 to determine a user device consistent with the IMSI of the target user. Further, the IMSI of the target subscriber is obtained by the background management system 14 interacting with the operator server.

Specifically, the background management system 14 sends the acquired package subscription condition and IMSI of one or more mobile phone numbers of the target user to be located to the search location device 11, the search location device 11 determines a reference frequency point of a reference frequency band to be preferentially searched for location according to the received package subscription condition, collects the IMSI of the user device 12 working in the reference frequency point within the signal coverage area, the search location device 11 sends the collected IMSI to the background management system 14, the background management system 14 compares the received IMSI of the user device 12 according to the existing IMSI of the target user until the IMSI of the user device 12 consistent with the IMSI of the target user is determined, and sends a location success message to the search location device 11, and after receiving the location success message, the search location device 11 verifies the user device consistent with the IMSI of the target user, if the verification passes, the user device is accurately located according to the cell frequency point and the physical cell identifier of the user device consistent with the IMSI of the target user.

Referring to fig. 2, fig. 2 is a flow chart of a search positioning method based on a mobile communication network according to an embodiment of the present application, where the search positioning method may be implemented based on the system architecture diagram shown in fig. 1, or may be implemented based on other architectures; it should be noted that, the execution subject of the method embodiment described below may be the above-described search positioning apparatus. The method includes, but is not limited to, the steps of:

step S201: a positioning event message is received from a background management system.

The positioning event message comprises package subscription conditions of one or more mobile phone numbers of a target user to be positioned and an International Mobile Subscriber Identity (IMSI); optionally, the package subscription condition of one or more mobile phone numbers of the target user to be located in the location event message and the IMSI corresponding to the one or more mobile phone numbers are determined by the background management system through client software, and the basic identity information (for example, an identity card number) of the target user to be located and the IMSI corresponding to the one or more mobile phone numbers specified by the public security personnel are determined, so that the package subscription condition of the one or more mobile phone numbers of the target user is obtained through interaction between the basic identity information and an operator server.

In this embodiment, the search positioning device is in communication connection with the background management system, and the background management system sends a package subscription condition carrying one or more mobile phone numbers of the target user and a positioning event message of the IMSI to the search positioning device.

Step S202: and determining a reference frequency point of the reference frequency band needing to be searched and positioned preferentially according to package subscription conditions of one or more mobile phone numbers in the received positioning event message.

And the searching and positioning equipment analyzes the received positioning event message to obtain package subscription conditions of one or more mobile phone numbers of the target user to be positioned.

Determining a reference frequency point of a reference frequency band needing to be preferentially searched and positioned according to the package subscription condition; it should be noted that, the process of determining the reference frequency point of the reference frequency band of the preferential search positioning may be obtained by analyzing the processor of the search positioning device itself, or may be obtained by receiving the analysis result sent by the server connected in a wired or wireless connection manner.

In an alternative implementation, there are multiple methods for determining the reference frequency point of the reference frequency band to be preferentially searched and located, and in an alternative implementation, there are multiple methods for determining the reference frequency point of the reference frequency band to be preferentially searched and located directly according to the operator to which the one or more mobile phone numbers belong and the package subscription condition, as shown in fig. 3, fig. 3 is a flow chart of a method for determining the reference frequency band and the reference frequency point provided in this embodiment, which specifically includes the following steps:

Step S301: and determining an operator to which the one or more mobile phone numbers belong, and a frequency band and a frequency point of the operator according to the number segments of the one or more mobile phone numbers.

Specifically, first, the first three digits of the one or more mobile phone numbers are roughly estimated, and the operators of the one or more mobile phone numbers, such as the chinese electric signal segment, are determined: 133. 149, 153, 173, 177, 180, 181, 189, 191, 199; chinese Unicom number section: 130. 131, 132, 145, 155, 156, 166, 171, 175, 176, 185, 186; chinese movement number section: 134 (0-8), 135, 136, 137, 138, 139, 147, 150, 151, 152, 157, 158, 159, 172, 178, 182, 183, 184, 187, 188, 198.

And according to the first three digits of the number segments of the one or more mobile phone numbers, interacting with the corresponding operator server, and determining that the mobile phone number of the target user belongs to the corresponding operator.

Further, the communication frequency bands divided by each operator are different, for example, the china mobile 4G frequency band: TD-LTE (TD-SCDMA Long Term Evolution, long term evolution) frequency band: 1880-1900MHz, 2320-2370MHz, 2575-2635MHz; chinese telecom 4G frequency band: TD-LTE frequency band: 2370-2390MHz, 2635-2655MHz, FDD-LTE (Time division duplexLong Term Evolution, frequency division Duplex Length Cheng Yanjin) band: 1755-1785MHz, 1850-1880MHz; china Unicom 4G frequency band: TD-LTE frequency band: 2300-2320MHz, 2555-2575MHz, FDD-LTE frequency band: 1755-1765MHz, 1850-1860MHz. The LTE is a network system, and there are two current 4G standards based on LTE: LTE-FDD and LTE-TDD (TD-LTE), respectively. Both standards are based on different branches of LTE, TD-LTE for hot spot area coverage and FDD for wide area coverage.

Therefore, after the mobile phone number of the target user is determined, the frequency band and the frequency point of the preferential detection can be determined according to the operator to which the mobile phone number belongs.

Optionally, when the target user to be located has a plurality of mobile phone numbers, determining operators of the mobile phone numbers in turn;

according to the operators to which the mobile phone numbers belong, the frequency band of the operator with the most attribution frequency is used as a reference frequency band for searching and positioning preferentially, and the number of other operators attributed is used as the searching and positioning sequence of the corresponding frequency band.

Step S302: and according to the package subscription condition of the one or more mobile phone numbers, the frequency band and the frequency point range of the operator are reduced.

The package subscription condition is generally a 4G package or a 5G package, which includes call duration and intra-provincial traffic/domestic traffic, wherein the intra-provincial traffic and the domestic traffic are keys for dividing the 4G package and the 5G package, most of the mobile phones currently applied are still 4G traffic in the 4G package, and specific frequency bands applied by the 4G traffic refer to the frequency band contents of three major operators related to china telecom, mobile and UNICOM. The total of 29 frequency bands of 5G traffic application in the 5G package is mainly divided into two frequency spectrum ranges, wherein the total of 26 frequency bands below 6GHz (collectively called Sub6 GHz) and the millimeter wave frequency band are 3. At present, the frequency range of Sub6GHz, which comprises 7 frequency ranges of n1/n3/n28/n41/n77/n78/n79, is mainly used in China.

Further, according to the current 3GPP division, 5G NR mainly includes two large frequency spectrum ranges, the 450MHz-6000MHz band range is FR1, namely Sub-6GHz, and the 24250MHz-52600MHz band range is FR2, namely millimeter wave; wherein, FR1 comprises 26 frequency bands from n1/n2/n3, and FR2 comprises three frequency bands of n257, n258 and mn260, and currently, the total of 7 frequency bands of n1/n3/n28/n41/n77/n78/n79 are mainly used at home and abroad. The frequency band of the domestic 5G network is mainly n78 frequency bands used by China telecom and China Unicom, and n41 and n79 frequency bands are used by China Mobile, so that 5G frequency spectrums supported by mobile are 2515-2675MHz and 4800-4900MHz, telecom is 3400-3500MHz and Unicom is 3500-3600MHz, and simultaneously telecom, unicom and broadcast television share the frequency band of 3300-3400Mhz in a room.

Therefore, if the operator to which the mobile phone number of the target user belongs is China mobile and the corresponding mobile phone package is 5G package, the reference frequency bands for searching and positioning preferentially are 2515-2675MHz and 4800-4900MHz; therefore, if the operator to which the mobile phone number of the target user belongs is China telecom and the corresponding mobile phone package is 5G package, the reference frequency band for preferential searching and positioning is 3300-3400Mhz and 3400-3500MHz; therefore, if the operator to which the mobile phone number of the target user belongs is China Unicom and the corresponding mobile phone package is 5G package, the reference frequency band for preferential searching and positioning is 3300-3400Mhz and 3500-3600MHz.

In the above embodiment, the IMSI of the one or more mobile phone numbers of the target user may be SUPI or sui.

In an alternative embodiment, according to the network connection state of the target ue to be located, the frequency band and the frequency point range to be searched are further supplemented, for example, after all the reference frequency bands and the reference frequency points are searched and located, and no ue consistent with the IMSI of the target ue is found, the target ue is pre-determined to actively disconnect the connection state with the public network base station, so that the wifi frequency band is monitored, and the success rate of detection is improved.

In an optional implementation manner, when the number of mobile phones of the target user is multiple, the pre-used mobile phone number of the target user is pre-determined according to the use condition of the mobile phone number of the target user, so as to reduce the range of the reference frequency band and the reference frequency point of the operator needing to be searched preferentially, which is specifically realized through two cases, including:

case one, obtaining the use records of a plurality of mobile phone numbers of the target user; the usage record may be obtained by the background management system through interaction with an operator server, where the usage record includes usage conditions of a plurality of mobile phone numbers of the target user in a preset time;

determining part of mobile phone numbers of the last use time of the mobile phone numbers within a preset period according to the use records of the mobile phone numbers of the target user; because the usage record includes the usage of a plurality of mobile phone numbers of the target user within a preset time, part of mobile phone numbers of the last usage time of the plurality of mobile phone numbers within a preset time period can be determined;

And determining a reference frequency band and a reference frequency point corresponding to the package subscription condition according to the package subscription condition of part of mobile phone numbers in a preset time period of the last use time, so as to reduce the range of the reference frequency band and the reference frequency point of the operator needing to be searched preferentially.

Case two, obtaining the use records of a plurality of mobile phone numbers of the target user;

if a special situation exists, the preset mobile phone number of the target user is obtained through prejudging according to the special situation, namely alternate use or random switching use and the use records of a plurality of mobile phone numbers of the target user, or the mobile phone number used by the target user is eliminated, so that the preset mobile phone number is obtained.

In practical applications, it is necessary to analyze the roles and characters of the target users to be located by using either of the cases one and two, and generally, the method presented by the case one is generally used for the target users whose facts to be searched and located are unclear, and the method presented by the case two is generally used for the target users whose facts to be searched and located are clear.

Step S303: and determining the reduced frequency band and frequency point of the operator as the reference frequency point of the reference frequency band needing to be searched and positioned preferentially.

Finally, searching and positioning the target user equipment according to the determined reference frequency points of the reference frequency band which needs to be searched and positioned preferentially or the reference frequency band which needs to be searched and positioned preferentially.

Step S203: and acquiring the IMSI of the user equipment working at the reference frequency point in the signal coverage range.

After the reference frequency band and the reference frequency point are determined, broadcasting and transmitting synchronous information of a virtual working cell and virtual working cell parameters to a target area in a signal coverage area at the reference frequency point of the reference frequency band, and adjusting the virtual working cell reselection bias parameters to enable the priority of the virtual working cell to be higher than the priority of each cell in the target area, namely enabling a C2 value calculated by mobile user equipment to exceed the sum of a power maximum cell C2 value and a cell reselection hysteresis parameter, so that the user equipment in the target area initiates a position area update request; the virtual working cell refers to a base station which has the same attribute information as the public network base station, namely a pseudo base station, and is formed by cloning the public network base station. Both have the same frequency point, the same LAC (location area code ) value, the same neighbor cell, and the same signal quality.

Further, receiving a location area update request of the user equipment in the target area, starting a location area update flow, and obtaining the IMSI of the user equipment in the target area.

Specifically, since the priority of the virtual working cell is higher than that of surrounding cells, when the mobile terminal in the virtual working cell receives the cell parameters broadcasted by the virtual working cell, the mobile terminal in the virtual working cell will start the location area update, and send a request to the search positioning device through the random access channel, the search positioning device allocates a dedicated control channel to the mobile terminal after receiving the request and establishes a second layer connection, and sends an identification request message to the mobile user terminal through the dedicated control channel, and the user device responds to the message and sends mobile user terminal identity information to the search positioning device and resides in the virtual working cell, wherein the user identity information comprises the international mobile user identification number IMSI and/or the international mobile device identity code of the mobile terminal.

Step S204: and sending the IMSI of the user equipment to the background management system.

And after the searching and positioning equipment searches one IMSI, the IMSI is sent to the background management system until the user equipment consistent with the IMSI of the mobile phone number of the target user is searched. If the reference frequency point of a certain reference frequency band is searched, and the user equipment consistent with the IMSI of the mobile phone number of the target user is not searched, the frequency band or the frequency point is switched to search, and the switched frequency band or frequency point still belongs to the range of the reference frequency band or the reference frequency point.

Step S205: and if the positioning success message from the background management system is received, verifying the user equipment consistent with the IMSI of the target user.

The positioning success message comprises a response message sent by the background management system after determining that the user equipment consistent with the IMSI of the target user exists.

And after receiving the successful positioning message from the background management system, carrying out continuous adsorption according to the cell frequency point of the user equipment consistent with the IMSI of the target user and the physical cell identifier PCI so as to facilitate the development of subsequent positioning work.

Optionally, for the user equipment accessed into the virtual working cell, if the IMSI of the mobile phone number of the target user is inconsistent with the IMSI of the mobile phone number of the target user, feeding back a TAU reject signaling carrying EMM cause12"TrackingArea Not Allowed" to the target user, so that the target user exits the current network and returns to the public network cell.

In an optional implementation manner, the verification process is mobile phone number comparison, and whether the user equipment is the target user equipment to be located is determined by acquiring the mobile phone number of the user equipment consistent with the IMSI of the target user. The specific steps are as follows:

firstly, based on the foregoing process, user equipment consistent with the IMSI of the target user has accessed to the virtual working cell, and based on the IMSI, the service request of the user equipment for initiating a short message to the public network base station is cloned, so that the public network base station initiates authentication to the target user.

Further, requesting to initiate paging to a user equipment consistent with the IMSI of the target user through the virtual working cell and the IMSI;

sending a mobile phone number inquiry short message containing the IMSI to a public network base station; after receiving the mobile phone number inquiry short message containing the IMSI, the public network base station sends a corresponding message containing the IMSI and the mobile phone number of the user equipment to the cloned user equipment, namely the pseudo user equipment.

and finally, if the reference mobile phone number is detected to be consistent with the mobile phone number in one or more mobile phone numbers of the target user, determining that the verification of the target user equipment is passed.

Step S206: and if the verification is passed, positioning the user equipment.

In an alternative embodiment, the decoding individual equipment is adjusted to enable the decoding individual equipment to be in downlink synchronization with the searching and positioning equipment and to be aligned with a frame header, and the cell frequency point and the physical cell identifier PCI of the user equipment which are consistent with the IMSI of the target user are absorbed at the same time;

transmitting the cell radio network temporary identifier C-RNTI to decoding individual equipment so that the decoding individual equipment can demodulate an uplink signal of target user equipment; adsorbing according to a cell frequency point of user equipment consistent with the IMSI of the target user and a physical cell identifier PCI; when the signal intensity from the signal of the uplink shared channel PUSCH of the target user equipment to the decoding individual equipment and the signal intensity from the surrounding interference signals to the decoding individual equipment are equal, comparing the signal intensities of the decoding individual equipment in two directions of the target user equipment and the target user equipment not to determine the direction of the target user equipment.

The above procedure has the advantage that when the signal of the uplink shared channel of the UE, which is consistent with the IMSI of the target UE, is equal to the strength of the individual and the strength of the surrounding interference signal, the decoding success rate of the former is high compared with the two directions of the individual facing the target UE and not facing the target UE due to the directional antenna. At this time, the directions of the target UEs can be indicated by multiplying the signal strengths of all the solutions by the weighting values.

According to the mobile phone package subscription condition of one or more mobile phone numbers of the target user to be located, the reference frequency band and the reference frequency point of an operator corresponding to the one or more mobile phone numbers to be searched and located are reduced, the searching and locating efficiency is improved, and the mobile phone package subscription condition has great significance in scenes such as public security, national defense and search and rescue.

The foregoing details the method of embodiments of the present application, and the apparatus of embodiments of the present application is provided below.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a search positioning apparatus 40 based on a mobile communication network according to an embodiment of the present application, where the apparatus 40 may be the aforementioned search positioning device or a device in the search positioning device, and the apparatus 40 may include a receiving unit 401, a determining unit 402, an acquisition unit 403, a first transmitting unit 404, a verification unit 405, and an adsorbing unit 406, where the detailed descriptions of the respective units are as follows.

A receiving unit 401, configured to receive a positioning event message from the background management system, where the positioning event message includes a package subscription condition of one or more mobile phone numbers of a target user to be positioned and an international mobile subscriber identity IMSI, and the package subscription condition includes a 4G package or a 5G package;

A determining unit 402, configured to determine, according to a package subscription condition of one or more mobile phone numbers in the received positioning event message, a reference frequency point of a reference frequency band that needs to be preferentially searched for positioning;

the acquisition unit 403 is configured to acquire an IMSI of a user equipment operating at the reference frequency point within a signal coverage area;

a first sending unit 404, configured to send an IMSI of the user equipment to the background management system;

a verification unit 405, configured to verify, if a positioning success message from the background management system is received, a user equipment consistent with an IMSI of the target user, where the positioning success message includes a response message sent by the background management system after determining that there is a user equipment consistent with the IMSI of the target user;

and the adsorption unit 406 is configured to locate the ue if the verification is passed.

In a possible implementation manner, the determining unit 402 is specifically configured to:

In one possible implementation manner, in the aspect of narrowing the frequency band and the range of frequency points of the operator according to the package subscription situation of the one or more mobile phone numbers, the determining unit 402 is specifically configured to:

In a possible embodiment, the acquisition unit 403 is specifically configured to:

In a possible implementation manner, the verification unit 405 is specifically configured to:

In one possible embodiment, the apparatus 40 further comprises:

Referring to fig. 5, fig. 5 is a schematic structural diagram of a search positioning device 50 based on a mobile communication network according to an embodiment of the present application, where the search positioning device 50 based on a mobile communication network may be the search positioning device illustrated in fig. one. The mobile communication network-based search positioning apparatus 50 includes: a processor 501, a communication interface 502 and a memory 503. The processor 501, the communication interface 502, and the memory 503 may be connected by a bus or other means, which is exemplified in the embodiment of the present application.

The processor 501 is a computing core and a control core of the mobile communication network-based search positioning device 50, and may parse various instructions in the mobile communication network-based search positioning device 50 and various data of the mobile communication network-based search positioning device 50, for example: the processor 501 may be a central processing unit (Central Processing Unit, CPU) that may transmit various types of interaction data between the internal structures of the mobile communication network based search positioning apparatus 50, etc. Communication interface 502 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI, mobile communication interface, etc.), and may be controlled by processor 501 to receive and transmit data; the communication interface 502 may also be used for transmission and interaction of signaling or instructions within the mobile communication network based search positioning device 50. The Memory 503 (Memory) is a Memory device in the mobile communication network-based search positioning apparatus 50 for storing programs and data. It will be appreciated that the memory 503 herein may include both a built-in memory of the mobile communication network based search positioning device 50 and an extended memory supported by the mobile communication network based search positioning device 50. The memory 503 provides a storage space storing an operating system of the mobile communication network based search positioning device 50, and also storing program codes or instructions required for the processor to perform the corresponding operations, and optionally, storing related data generated after the processor performs the corresponding operations.

In the present embodiment, the processor 501 executes executable program code in the memory 503 for performing the following operations:

sending the IMSI of the user equipment to the background management system;

and if the verification is passed, positioning the user equipment.

In an alternative, the processor 501 is configured to determine, according to a package subscription condition of one or more mobile phone numbers in the received positioning event message, a reference frequency point aspect of a reference frequency band that needs to be preferentially searched for positioning, where:

In an alternative, the aspect of narrowing the frequency band and the range of the frequency point of the operator according to the package subscription situation of the one or more mobile phone numbers, the processor 501 is further configured to:

In an alternative, the processor 501 is configured to:

In an alternative, if a positioning success message from the background management system is received, the processor 501 is configured to perform verification on a user equipment consistent with the IMSI of the target user:

In an alternative, the processor 501 is further configured to:

It should be noted that the implementation of the respective operations may also correspond to the corresponding description of the method embodiment shown on the side of the search positioning device with reference to fig. 2 and 3.

Embodiments of the present application provide a computer readable storage medium storing a computer program comprising program instructions that, when executed by a processor, cause the processor to perform the operations performed by the search positioning device in the embodiments described in fig. 2 and 3.

Embodiments of the present application also provide a computer program product that, when run on a processor, performs the operations performed by the search positioning device in the embodiments described in fig. 2 and 3.

Those skilled in the art will appreciate that implementing all or part of the above-described embodiment methods may be accomplished by a program that instructs related hardware, and the program may be stored in a computer-readable storage medium, and the program may include the above-described embodiment methods when executed. And the aforementioned storage medium includes: various media capable of storing program code, such as ROM, RAM, magnetic or optical disks.

Claims

1. The search positioning method based on the mobile communication network is characterized by being applied to search positioning equipment of a search positioning system, wherein the search positioning system comprises the search positioning equipment, user equipment, a public network base station and a background management system, and the search positioning equipment is in communication connection with the background management system through the public network base station, and the method comprises the following steps:

sending the IMSI of the user equipment to the background management system;

And if the verification is passed, positioning the user equipment.

2. The method of claim 1, wherein the determining the reference frequency point of the reference frequency band that needs to be searched for positioning preferentially according to the package subscription condition of the one or more mobile phone numbers in the received positioning event message includes:

3. The method of claim 2, wherein the narrowing the frequency band and the frequency point range of the operator according to the package subscription condition of the one or more mobile phone numbers comprises:

4. The method of claim 2, wherein the narrowing the frequency band and the frequency point range of the operator according to the package subscription condition of the one or more mobile phone numbers comprises:

5. The method of claim 1, wherein the acquiring the IMSI of the ue operating at the reference frequency within the signal coverage area comprises:

6. The method of claim 1, wherein authenticating the user device that is consistent with the IMSI of the target user if a positioning success message is received from the background management system comprises:

7. The method according to claim 1, wherein the method is applied to a search positioning device; after the user equipment is positioned if the verification is passed, the method further comprises the following steps:

8. A mobile communication network-based search positioning apparatus, the apparatus comprising:

the mobile terminal comprises a receiving unit, a background management system and a positioning unit, wherein the receiving unit is used for receiving a positioning event message from the background management system, the positioning event message comprises package subscription conditions of one or more mobile phone numbers of a target user to be positioned and an International Mobile Subscriber Identity (IMSI), and the package subscription conditions comprise a 4G package or a 5G package;

9. A mobile communication network based search positioning device, characterized in that it comprises at least one processor, a communication interface for transmitting and/or receiving data, and a memory for storing a computer program, said at least one processor being adapted to invoke the computer program stored in the at least one memory for implementing the method according to any of claims 1-7.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program which, when run on a processor, implements the method according to any of claims 1-7.