KR20000074068A - A mobile phone position detecting system - Google Patents

Abstract

PURPOSE: A method for implementing a location system using a mobile communication network is provided to establish a mobile communication system applying a network protocol detecting a present position of a subscriber having a mobile phone, and to transmit a message corresponding to the detected present position of the mobile phone, so that the present position of the subscriber having the mobile phone can be easily confirmed. CONSTITUTION: Identification information of a mobile phone, for which a location service is requested, such as a subscriber number and a terminal number is received. Communication resources of a base station and a mobile switching center(MSC) managing a present communication area, where the mobile phone corresponding to the identification information is positioned, are confirmed through silent paging. A present location of the mobile phone is supplied based on a fixed position of the confirmed communication resources.

Description

Positioning system using mobile communication network and positioning service method according to it {A mobile phone position detecting system}

The present invention relates to a positioning system using a mobile communication network and a positioning service method thereof, and more particularly, to detect a current position of a subscriber carrying a mobile telephone using a conventional mobile communication network, and to detect the detected position information. The present invention relates to a positioning system using a mobile communication network for transmitting and providing to a communication terminal requesting a positioning service, and a positioning service method thereof.

In general, a landline telephone using a public switched telephone network (PSTN) is the most common communication terminal fixedly installed and used at a specific location and region, and the location and subscriber information of the landline telephone is It is stored and managed by an exchange that services call access and call exchange.

Therefore, the location of the fixed-line telephone set as described above can be easily confirmed by using the location and subscriber information of the wired telephone stored and managed by the exchange, and the wired telephone is installed from the telephone number assigned to the wired telephone. You can roughly predict specific areas and locations.

On the other hand, a mobile telephone using a mobile communication network is a mobile communication terminal that is used while moving to an arbitrary region and location, unlike the landline telephone, and the location of the mobile telephone is a home location register (HLR) described later. A conventional mobile communication system in which the location information of the mobile phone is stored and managed and a location information storage management method thereof will be described in detail with reference to FIGS. 1 and 2. As follows.

First, FIG. 1 schematically shows the overall configuration of a conventional mobile communication system, wherein the mobile communication system includes a plurality of wireless communication devices that communicate wirelessly with mobile phones located in a communication area divided into three sectors. Base Station Tranceiver Subsystem (BTS) 6 ₁ ..6y; A plurality of base station controllers (BSCs) 5 ₁ .. 5x for controlling the base stations; A plurality of mobile switching centers (MSCs) 3 ₁ .. 3n connected to the base station controller to exchange requested call signals; A plurality of Visitor Location Registers (VLRs) (4 ₁ ..4n) for temporarily storing the location and subscriber information of the mobile telephone located in the communication area of the mobile switching center; And a plurality of home location registers (HLRs) (1 ₁ ..1k) connected to the mobile switch network through a network (2) to store and manage subscriber information and mobile phone location information subscribed to a mobile communication service. It is configured to include.

In the conventional mobile communication system configured as described above, as shown in FIG. 2, location information of the mobile telephone is registered and deleted in accordance with the movement of the subscriber carrying the mobile telephone. Hereinafter, the base station (BTS) And a base station controller (BSC) collectively referred to as a base station (BS) of a higher concept, and the location information registration and deletion operations will be described in detail.

First, when a subscriber carrying a mobile phone moves to a communication area managed by an arbitrary base station (BS), the base station connects the information of the mobile phone detected through wireless communication with the mobile phone to the base station. The mobile switching center and the visitor location register 3 ₁ and 4 ₁ are transmitted (S1).

Accordingly, the corresponding mobile switch and visitor location registers 3 ₁ and 4 ₁ detect the location information of the transmitted mobile phone and move the home location register 1k to manage subscriber information of the mobile phone. A location information registration request (REGNOTI) signal of a telephone is transmitted (S2), and the home location register 1k receiving the location information registration request (REFNOTI) signal is a subscriber of the mobile phone. Information For example, a mobile exchange and visitor location register (3n, 4n) which manages a communication area where a subscriber of the mobile phone was previously located by searching a database storing location information, which is an identification number of the mobile switch. In step S3, a registration cancellation deletion (REGCANI) signal of the mobile phone is transmitted.

The mobile switchboard and the visitor location registers 3n and 4n having received the location information deletion request (REGCANI) signal delete all the information of the subscriber and then receive a location information deletion response (REGCANR). Result) signal is returned to the home location register 1k that has transmitted the location information deletion request (REGCANI) signal (S4), and the home location register 1k that has received the location information deletion response (REGCANR) signal is returned. After updating and storing the new location information of the mobile phone in the database, the corresponding mobile switch and visitor location register (REGNOTR), which signals the update and save, transmits a registration notification return result (REGNOTR) signal to the communication area of the mobile phone. 3 ₁ , 4 ₁ ) (S5).

Accordingly, the corresponding mobile switchboard and visitor location registers 3 ₁ and 4 ₁ , in particular, the visitor location register 4 ₁ , which have received the location information registration response (REGNOTR) signal, return subscriber information of the mobile phone. .

Therefore, when a subscriber carrying a mobile telephone moves to a communication area controlled by another mobile switching center, the above-described operation causes the location information and the subscriber information of the mobile telephone to be changed into a mobile switching center (MSC) and a visitor location register ( VLR) and home location register (HLR).

However, the location information of the mobile phone stored in the home location register (HLR) is taken into consideration between the call loads of the mobile switching center (MSC), and the communication service area of the mobile switching device in which the mobile phone is established in the mobile communication network. Since the location information is updated and stored at a predetermined time interval, for example, at a set time interval, for example, at a time interval of 2 hours, and when moving between base stations (BS) in a communication service area of the same mobile switching center, such location information is moved from time to time in fact. There is an inaccurate problem in determining the current location of the mobile phone to be used, and since the current mobile communication service does not provide a so-called positioning service that provides the mobile phone subscriber with the location of the mobile phone, the mobile phone If you want to know the current location of a subscriber who is carrying Open expensive jipieseu calculated to determine the location: there is a problem you need to use (GPS Global Positioning System) equipment.

Therefore, the present invention was created to solve the above problems, to build a mobile communication system to which the network protocol (Network Protocol) is applied to detect the current location of the subscriber carrying a mobile phone using a mobile communication network, It is a communication terminal requesting a location service, and the present invention provides a location system using a mobile communication network that services a message corresponding to the current location of the detected mobile phone, and a location service method thereof.

1 shows an overall configuration of a general mobile communication system,

2 illustrates a process of registering / deleting mobile phone location information in a general mobile communication system.

Figure 3 shows the overall configuration of the positioning system using a mobile communication network according to the present invention,

4 illustrates a process of detecting and providing location information according to the present invention.

5 is a flowchart illustrating an operation in an originating mobile switching center (MSC) according to the present invention;

6 is a flowchart illustrating an operation in a home MSC according to the present invention;

7 is a flowchart illustrating an operation in a home location register (HLR) according to the present invention;

8 is a flowchart illustrating an operation in an incoming mobile switching center (MSC) according to the present invention.

※ Explanation of code for main part of drawing

1 ₁ ... 1k: Home Location Register (HLR) 2: Network

3 ₁ ... 3n: MSC 4 ₁ ... 4n: Visitor Location Register (VLR)

5 ₁ ... 5x: Base Station Controller (BSC) 6 ₁ ... 6y: Base Station (BTS)

100: positioning server (Server)

A location service method using a mobile communication network according to the present invention for achieving the above object comprises the steps of: receiving identification information of a mobile telephone for which a location service is requested; Identifying a communication resource in charge of a current communication area in which a mobile phone corresponding to the received identification information is located; And based on the identified fixed location of the communication resource, three steps of providing the current location of the mobile telephone.

In addition, a positioning system using a mobile communication network according to the present invention, the base station for wireless communication with the mobile telephone; A base station controller controlling the base station; A mobile switch connected with the base station controller to exchange a requested call signal; A visitor location register for temporarily storing a communication area location and subscriber information of a mobile telephone located within a communication area of the mobile switching center; A home location register connected to the mobile switch network and storing and managing a communication area location and subscriber information of the mobile phone; And storing and managing location information of the base station and corresponding geographic information in a database, and providing a location server for providing location information of a specific mobile phone.

Hereinafter, a positioning system using a mobile communication network and a positioning service method according to the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 3 schematically shows an overall configuration of a positioning system using a mobile communication network according to the present invention, wherein the positioning system includes a mobile phone located in a communication area divided into sectors. A plurality of base station (BTS) 6 ₁ .. 6y in wireless communication; A plurality of base station controllers (BSCs) 5 ₁ .. 5x for controlling the base station; A plurality of mobile switching centers (MSCs) 3 ₁ .. 3n connected with the base station controller to exchange requested call signals; A plurality of visitor location registers (VLRs) 4 ₁ .. 4n for temporarily storing the location and subscriber information of the mobile phone located in the communication area of the mobile exchange; And a plurality of home location registers (HLRs) 1 ₁ .. 1k connected to the mobile switch network via the network 2 to store and manage subscriber information and mobile phone location information subscribed to a mobile communication service. A location server that stores and manages a general mobile communication system, location information of the base station, and corresponding geographic information in a database, and provides location information of a specific mobile phone when requesting a location service according to the present invention. Location Server) is configured to include (100).

In the positioning system configured as described above, when requesting the positioning service according to the present invention as shown in FIG. 4, the location information of the requested specific mobile phone is detected and provided through the requested communication terminal. As described above, the base station (BTS) and the base station controller (BSC) are collectively referred to as a base station (BS) of a higher concept, and a detailed description will be given of a process of detecting and providing location information of the requested mobile phone. Is as follows.

First, FIG. 4 illustrates a process of detecting and providing location information according to the present invention when constructing a location server using a voice message service (VMS) device. The present location of a specific mobile phone is illustrated in FIG. When the caller who wants to receive the information attempts to call the representative telephone number providing the location service, the mobile switching center (MSC1) 3 ₁ that receives the call stores the home telephone number. Sends a Location Request Invoke (LOCREQI) signal to a location register (HLR1) 1 ₁ , requests routing information to the location server 100 (S10), and the home location register ( The HLR1 (1 ₁ ) may transmit a Location Request Return Result (LOCREQR) signal including a routing number (VSRN) of the positioning server 100 to the MSC1 (3 ₁ ). (S11).

Accordingly, the mobile switching center (MSC1) 3 ₁ sets up a call with the returned routing number VSRN. That is, a call with another MSC2 3 ₂ connected between the MSC1 3 ₁ and the positioning server 100 is established (S12), and the MS is set up with the call. (3 ₂ ) transmits a voice announcement message service connection request (VMSSVCRQ) signal to the positioning server 100 using the routing number VSRN (S13).

The positioning server 100 receiving the voice announcement message service access request (VMSSVCRQ) signal prepares a voice announcement message corresponding thereto, and returns a voice announcement message service connection request response (VMSSVCRP: VMS Service Response) signal (S14). ), A call is established between the mobile switching center (MSC2) 3 ₂ and the positioning server 100.

That is, a call is established between the MSC1 (3 ₁ ) and the location server 100 first connected to the caller's call, so that the caller listens to the voice announcement message of the location service, and the listened voice. The caller enters a phone number of a specific mobile phone to which the caller wants to receive a location service according to the guide message. The location checking server 100 receiving the inputted phone number includes, for example, the caller's identification information. Is using a mobile phone, a location information query request (PAGERQ) for querying the current location of the mobile phone corresponding to the inputted phone number together with subscriber information including the phone number of the mobile phone, etc. The signal is transmitted to the mobile switching center (MSC2) 3 ₂ (S16).

Accordingly, the MSC2 3 ₂ does not allocate a separate call path, but the subscriber number included in the PAGERQ signal, that is, the subscriber's number (MIN) of the mobile phone to confirm its location. The location information query request (PAGEREQI) signal is transmitted to the corresponding home location register (HLR2) 1k that is in charge of Mobile ID Number (S17).

The home location register (HLR2) 1k, having received the PAGEREQI signal, is a serving MSC n (3n) that manages the communication area in which the subscriber is currently located. A mobile switching device receiving a location information request message (PAGEREQI) including a subscriber number (MIN) and a terminal number (ESN: electric serial number) of the mobile phone to be transmitted (S18), and receiving the location information request message (PAGEREQI). (MSC n) (3n) is to determine the location of the terminal, that is, the mobile phone is requested to determine the location, MSCID (MSCID), Point Code Subsystem Number (PCSSN) and area identification number (S19) returning the location information of the identified mobile phone, including (LAID: Location Area ID), to the home location register (HLR2) 1k, or confirming when the location of the mobile phone is not known. Notify and inform the cause Reply the message.

Thereafter, the home location register (HLR2) 1k retransmits (S20) the location information of the returned mobile phone to the home MSC 3 ₂ that has transmitted the PAGEREQI signal. On the other hand, the home MSC 3 ₂ is a location information query response including the location information of the returned mobile phone, i.e., the mobile switch identification number (MSCID), the point code (PCSSN) and the area identification number (LAID). By transmitting the (PAGERP) signal to the positioning server 100 (S21), the positioning server 100 can provide the location information of the specific mobile phone to the caller (S22).

For reference, in the step S17, the home location register HLR2 returns a message indicating that it is an unassigned number if the corresponding subscriber number corresponding to the received subscriber number MIN is not found, and also returns the mobile phone. If the power is turned off, return the confirmation message due to the power off and then exit.

A detailed process of the location service method in the location system using the mobile communication network according to the present invention, which is configured and operated as described above, will be described in detail with reference to the accompanying drawings.

FIG. 5 is a flowchart illustrating an operation of the originating mobile switching center (MSC1) 1 ₁ of the positioning service method using the mobile communication network according to the present invention. First, a caller provides a representative telephone number for providing a positioning service. Dialing (S30), a mobile exchange that has received the dialed caller's call, for example, if the mobile exchange is an outgoing mobile exchange (MSC1) 3 ₁ , the outgoing mobile exchange (MSC1) (3). ₁ ) transmits a location information request (LOCREQI) signal to the home location register (HLR1) 1 ₁ where the station number of the dialed representative telephone number is accepted and requests a routing number (VSRN) to the positioning server 100. (S31).

At this time, as in the embodiment of the present invention, when building the positioning server 100 using a voice announcement message service (VMS) device, the home location register (HLR1) (1 ₁ ) location representative service representative number It is necessary to subscribe to a voice prompt message service, that is, a voice mail service in advance and maintain the activation state. In this state, when the home location register (HLR1) 1 ₁ receives a location information request (LOCREQI) signal, The routing number VSRN to the positioning server 100 is transmitted to the originating mobile switch MSC1 3 ₁ .

Subsequently, the originating mobile switching center (MSC1) 3 ₁ determines whether or not the routing number received from the home location register (HLR1) 1 ₁ is normally received (S32). A mobile exchange connected between the originating mobile exchange (MSC1) 3 ₁ and the positioning server 100. For example, if the mobile exchange is a home MSC2 (3 ₂ ), the home mobile exchange After setting the call path with (MSC2) (3 ₂ ) (S33), it is checked whether the call path is normally set (S35).

As a result of the check, if the call path is normally set, the caller is provided with the location service information provided from the positioning server 100 through the call path (S37), after which the caller ends or not, The call is terminated by releasing the call path according to whether the positioning service is provided (S38).

On the other hand, if it is determined that the routing number has been abnormally received as a result of the determination (S32), it informs that the routing is impossible (S34) and terminates. Also, when the confirmation (S35) indicates that the call path is not set, the call setting fails. (S36) and ends.

6 is a flowchart illustrating an operation of a home MSC in a positioning service method using a mobile communication network according to the present invention, wherein a caller dials a representative telephone number that provides a positioning service. Normally connected to the location server 100, according to the voice prompt message provided through the connected call, when the caller enters the phone number of the mobile phone to check the location, the location server 100 ) Transmits, to the home mobile switching center (MSC2) 3 ₂ , a location information query request (PAGERQ) signal including the telephone number of the mobile telephone input by the caller (S40).

Thereafter, the MSC 3 ₂ analyzes the phone number, that is, the subscriber number, of the mobile phone included in the PAGERQ signal, and manages the subscriber number. Search for HLR2) 1k, and transmit a location information query request (PAGERQI) signal including the subscriber number to the searched home location register (HLR2) 1k (S41), and locate the location from the home location register (HLR2). In response to determining whether or not the information query response (PAGEREQR) has been received, if received normally, the location information query response (PAGEREQR) signal returned from the home location register (HLR2) 1k is received, and the positioning server 100 is received. The position information inquiry and response (PAGERP) signal is returned (S43).

On the other hand, if it is abnormally transmitted as a result of the determination, the guide message (S44) for notifying the location service is not returned to the location server 100 and ends the operation.

FIG. 7 is a flowchart illustrating an operation of a home location register (HLR2) in a location service method using a mobile communication network according to the present invention. As described above with reference to FIG. 6, the home mobile switch (MSC2) ( 3 ₂ ) The home location register HLR2, which has received the PAGEREQI signal from (S50), searches for the subscriber number included in the PAGEREQI signal from the database (S51). If the corresponding subscriber number does not exist in the search result, the operation message is terminated after returning a notification message (S52) indicating that it is an unassigned subscriber number. If the corresponding subscriber number exists, the corresponding subscriber number exists. For example, the state of the mobile telephone is detected (S53).

If the power of the mobile phone is turned off as a result of the detection, the operation is terminated after returning a notification message S55 indicating the power off of the mobile phone, and the power of the mobile phone is detected. If On, the position information query request (PAGEREQI) signal is transmitted (S54) to the current MSC n in charge of the mobile telephone.

Thereafter, it is determined whether a normal PAGEREQR signal is received from the MSC n (S56), and if the PAGEREQR signal is not normally received, the location service. After returning the guide message S58 notifying of the impossibility, the operation is terminated, and when the determination result PAGEREQR signal is normally received, the received position information query response (PAGEREQR) signal is sent to the home mobile switch ( MSC2) (3 ₂ ) returns (S57).

8 is a flowchart illustrating an operation of a mobile switching center (MSC n) of the positioning service method using a mobile communication network according to the present invention. As described above with reference to FIG. 7, the home location register (HLR2) ( When the location information query request (PAGEREQI) signal transmitted from 1k) is received (S70) by the MSC n (3n), the MSC n (3n) receives a location information query request (PAGEREQI). If the subscriber number of the mobile phone included in the signal exists in the subscriber database that is owned by the user (S72), and if the subscriber number of the mobile phone does not exist, the subscriber number is an unassigned number. After returning to the home location register (HLR2) (1k) a notification message indicating that the operation is terminated, and if the subscriber number of the mobile phone, the search result mobile phone state of the subscriber number And detecting (S73) whether or not power-on / off (On / Off).

When the power of the mobile phone is turned off as a result of the detection, the operation message is terminated after the response message (S74) indicating the power off of the mobile phone is terminated, and the power of the mobile phone is detected. If On, the current base station controller (BSC) in charge of the mobile phone transmits a silent paging command (S76) to be described later.

Subsequently, the MSC 3n determines whether a paging response is received from the base station controller BSC, and when the paging response is not received, a notification message indicating a paging non-response (S76). After returning S77 to the home location register (HLR2) 1k, the operation ends, and if the paging response is received through any base station as a result of the determination, based on the response signal received from the base station controller BSC After generating a location information request response (PAGEEQR) signal, a location information reception processing operation for transmitting to the home location register (HLR2) 1k is performed (S78). In response to the response signal received from the base station controller, Since the identification value of the base station (BS) that manages the communication area of the mobile telephone and the identification value of the base station controller are included together and transmitted, the mobile switch 3n responds from the base station controller. The location information request response (PAGEREQR) signal is generated by adding the identification value of the mobile exchange itself to the response signal, which is transmitted to the home location register 1k, and the home location register 1k is a location server. 100), it is possible to determine the corresponding communication area where the mobile phone is located by comparing the identification value of each base station, base station controller and mobile switching device, that is, the unique information, stored in the home location register (HLR2) 1k. Will be.

For reference, the silent paging and general paging will be described below. First, general paging is a command that attempts to establish a call path between the originating mobile switch MSC1 and the destination mobile switch MSC n, and then actually establishes a call route between the corresponding mobile phone and the base station BS. When the mobile phone responds to the general paging, it allocates communication resources related to call setup, such as a base station controller (BSC) and a base station (BTS), so as to actually establish a call path with the corresponding subscriber.

On the other hand, in the silent paging, when the caller requests a call connection with a specific subscriber's mobile phone, the originating mobile switching center (MSC1) moves to the home location register (HLR) to obtain the subscriber's routing number. A location information request (LOCREQI) signal is transmitted, and the home location register (HLR) transmits a routing request (ROUTREQI) to a mobile switching center that manages a mobile phone of a subscriber who has requested a call connection, that is, a destination mobile switching center (MSC n). After the Invoke signal is transmitted, the incoming mobile switching center (MSC n) responds to the routing request (ROUTREQI) signal received from the home location register (HLR), and generates a routing number (TLDN: Temporary Local Directory Number), which is a command for confirming whether the subscriber is located in the communication area that he is actually managing prior to the routing number assignment. When a normal paging response is received from the mobile phone, only the routing number is transmitted to the home location register (HLR) without allocating the communication resource separately.

On the other hand, the positioning service according to the present invention uses the above-mentioned sirent (Silent) paging, the reason for this is as follows.

First, since the actual call with the subscriber is not for the purpose, but for the purpose of positioning, it prevents the waste of communication resources due to the use of general paging and also attempts the actual call while paging the mobile phone for positioning. If it is, the paging for the positioning is to prevent the call connection impossibility to establish the actual call call.

When the mobile station is paged using the siren paging, and it is determined that the call is in a busy state, the BS not immediately performs paging, but immediately returns its location information to the MSC. A communication area in which the mobile phone is located, by using unique information that is an identification value for a call resource allocated to the mobile phone in communication, that is, a base station, a base station controller, and a mobile switch, in a state in which the call state of the mobile phone is not disturbed. To provide location information.

The positioning system using the mobile communication network and the positioning service method according to the present invention configured as described above are subscribers carrying a mobile phone without expensive GPS equipment that calculates and checks the position using satellites. It is a very useful invention that can easily determine the current location of the, and also provides a location service using a mobile communication network does not affect the incoming / outgoing function of the mobile phone at all.

Claims (7)

A first step of receiving identification information of the mobile telephone for which the location service is requested; Identifying a communication resource in charge of a current communication area in which a mobile phone corresponding to the received identification information is located; And And a third step of providing the current location of the mobile telephone based on the fixed location of the identified communication resource. The method of claim 1, The identification information of the first step, the location service method using a mobile communication network, characterized in that it comprises a subscriber number and a terminal number of the mobile phone. The method of claim 1, The identified communication resource, the location service method using a mobile communication network, characterized in that it comprises a base station and a mobile switch for managing a communication area. The method of claim 3, wherein Wherein step 2, using the siren (Silent) paging, the location service method using a mobile communication network, characterized in that for identifying a communication resource for receiving a signal of the mobile phone in response thereto. The method of claim 4, wherein In the second step, when the mobile phone corresponding to the received identification information is in a call reception or outgoing state, the location service method using the mobile communication network, characterized in that for identifying the communication resources allocated to the call. In the mobile communication system, A base station in wireless communication with a mobile telephone; A base station controller controlling the base station; A mobile switch connected with the base station controller to exchange a requested call signal; A visitor location register for temporarily storing a communication area location and subscriber information of a mobile telephone located within a communication area of the mobile switching center; A home location register connected to the mobile switch network and storing and managing a communication area location and subscriber information of the mobile phone; And And storing and managing location information of the base station and corresponding geographic information in a database, and including a location server for providing location information of a specific mobile phone. The method of claim 6, The positioning server is a positioning system using a mobile communication network, characterized in that it comprises a voice message service device for serving the location information of the specific mobile phone as a voice message.