JP4532298B2 - POSITION INFORMATION INTEGRATED MANAGEMENT DEVICE AND POSITION INFORMATION INTEGRATED MANAGEMENT METHOD - Google Patents

Description

  The present invention relates to a location information integrated management apparatus and a location information integrated management method for managing location information of mobile terminals used in a mobile communication network in an integrated manner.

  Conventionally, in a third generation mobile communication network, a location registration area of a mobile terminal is managed by a location registration process defined by 3GPP (3rd Generation Partnership Project) (for example, see Non-Patent Documents 1 to 4). . Usually, the location registration area is defined as LA (Location Area) or RA (Routing Area). This LA / RA is a group in which a plurality of sectors (also referred to as “cells”) serving as a service area of a radio base station are grouped. When there is an incoming call (call connection request) to the mobile terminal, the mobile communication network performs a paging (simultaneous calling of the mobile terminal) process by transmitting a paging signal to the location registration area where the mobile terminal is located. Do. Hereinafter, an area where a paging signal is transmitted is referred to as a paging area.

On the other hand, in recent years, mobile terminals having a GPS (Global Positioning System) function have become widespread. For this reason, the mobile terminal can acquire the position information of the mobile terminal from the GPS satellite, and various techniques using the GPS position information of the mobile terminal have been proposed (for example, see Patent Document 1).
JP 2001-2111474 A 3GPP TS 22.071 V6.5.0 “Location management procedures” 3GPP TS 23.012 V5.2.0 “Location management procedures” 3GPP TS 23.171 V3.10.0 “Functional stage 2 description of location services in UMTS” 3GPP TS 24.008 V6.2.0 “Mobile radio interface Layer 3 specification; Core network protocols; Stage 3”

  As described above, since it is possible to acquire GPS location information by the mobile terminal, processing for acquiring and managing the location registration area of the mobile terminal by location registration processing in order to perform paging and call connection processing in the mobile communication network, The two independent processes of acquiring and managing the GPS position information of the mobile terminal are mixed. That is, the mobile communication network manages the position information of different representation formats of the same terminal twice, and performs processing separately.

For this reason, for example, when GPS position information acquisition processing and paging processing of a mobile terminal occur continuously, the location area of the mobile terminal can be accurately specified within a narrow range at the time of paging processing by using GPS position information. Nevertheless, the mobile communication network specifies the paging area using the location registration area of the mobile terminal acquired and managed by the location registration process. For this reason, a wide range of paging processing is performed, which is inefficient.
The present invention has been made in view of the above problems, and provides a position information integrated management apparatus and a position information integrated management method capable of improving the efficiency of position information management and paging processing. For the purpose.

In order to solve the above-mentioned problem, the invention described in claim 1 includes location registration area information acquired by location registration processing in a mobile communication network, and GPS location information acquired by a GPS function provided in a mobile terminal. A time-series position information management means for managing a history of the position information of the mobile terminal, and a paging process when receiving an incoming call to the mobile terminal based on the latest position information managed by the time-series position information management means A paging area specifying means for specifying a paging area to be performed ;
Position information conversion means for converting the GPS position information into the position registration area information ,
The paging area specifying means is:
When the latest position information managed by the time-series position information management means is GPS position information, the position registration area represented by the position registration area information converted by the position information conversion means the providing location information integrated management system for a particular be characterized Rukoto as the paging area.

According to this configuration, the location information integrated management device manages the history of location information of the mobile terminal including location registration area information and GPS location information, and identifies the paging area based on the latest location information managed. Therefore, in addition to the position registration area information, the GPS position information can be easily used for specifying the paging area, and the efficiency of position information management and paging processing can be improved. In addition, since the position information integrated management device can convert the GPS position information into position registration area information that is a representation format of position information used at the time of paging processing, the paging area can be easily specified. .

According to a second aspect of the present invention, in the positional information integrated management device according to the first aspect, when there is an incoming call to the mobile terminal, the paging area specified by the paging area specifying means is subjected to paging processing. A paging area notifying unit for notifying an external device to be performed is further provided.
According to this configuration, the external device can perform paging in the paging area specified using the GPS position information, and can improve the efficiency of the paging process.

According to a third aspect of the present invention, in the positional information integrated management device according to the first or second aspect , the latitude / longitude information of the center of the position registration area represented by the position registration area information and the radius of the position registration area Further, the position information conversion means performs the conversion using the conversion table.
According to this configuration, the position information integrated management device can easily convert the GPS position information into the position registration area information using the conversion table, and can easily identify the paging area.

According to a fourth aspect of the present invention, in the location information integrated management device according to any one of the first to third aspects, the location registration area information includes a service area of a local exchange and a service area of a radio control station. And identification information representing at least one of the service area of the radio base station.
According to this configuration, the location registration area information can be expressed by identification information representing an area smaller than the conventional one, and the location of the mobile terminal can be specified with high accuracy. In addition, the location registration area can be expressed in various sizes, and the size of the location registration area can be changed according to the use in the mobile communication network such as paging processing and the movement status of the mobile terminal. .

According to a fifth aspect of the present invention, in the positional information integrated management device according to any one of the first to fourth aspects, the movement status of the mobile terminal is based on a difference in acquisition time of the positional information of the mobile terminal. The paging area specifying means changes the size of the specified paging area based on the movement status of the mobile terminal managed by the movement status management means. Features.
According to this configuration, the location information integrated management device can change the size of the paging area to an appropriate size based on the movement status of the mobile terminal, and can perform efficient paging processing. Become.

According to a sixth aspect of the present invention, in the positional information integrated management device according to the fifth aspect , the position information of the mobile terminal is acquired based on the movement status of the mobile terminal managed by the movement status management means. It is further characterized by further comprising a position registration cycle changing means for changing the cycle.
According to this configuration, the positional information integrated management device changes the period in which the location information of the mobile terminal is acquired based on the movement status of the mobile terminal. Accordingly, position information for specifying an appropriate paging area can be acquired and managed.

The invention according to claim 7 is the location information of the mobile terminal including location registration area information acquired by location registration processing in the mobile communication network and GPS location information acquired by a GPS function provided in the mobile terminal. When the latest position information managed in the time series position information management step for managing history and the time series position information management step is GPS position information, the GPS position information is converted into the position registration area information. A conversion step; a paging area specifying step for specifying a location registration area represented by the location registration area information converted in the conversion step as a paging area to be subjected to a paging process upon arrival at the mobile terminal; and the paging area Performs paging processing in the paging area specified in the specific step. To provide location information integrated management method characterized by having a paging process step.

  According to this method, a history of location information of a mobile terminal including location registration area information and GPS location information is managed, a paging area is identified based on the latest location information managed, and the identified paging area In addition to location registration area information, GPS location information can be easily used for specifying a paging area, and location information management and paging processing can be made more efficient. Become.

  According to the present invention, the location information integrated management device manages a history of location information of a mobile terminal including location registration area information and GPS location information, and specifies a paging area based on the latest location information managed. Therefore, in addition to the position registration area information, the GPS position information can be easily used for specifying the paging area, and the efficiency of position information management and paging processing can be improved.

Next, embodiments for carrying out the present invention will be described with reference to the drawings. In each drawing referred to in the following description, the same reference numerals are given to the same parts as in the other drawings.
FIG. 1 shows the overall configuration of a location information integrated management system according to an embodiment of the present invention. As shown in the figure, the location information integrated management system includes a location information integrated management device 10, an HLR (Home Location Register) 20 and a VLR (visitor location register) which are devices included in a third generation mobile communication network compliant with 3GPP. ) 30, G-MSC (Gateway Mobile Service Switching Center) 40, L-MSC (Local Mobile Service Switching Center) 50, RNC (Radio Network Controller) 60, BS (Base Station) A wireless base station) 70, a mobile terminal 80, and a GMLC (Gateway Mobile Location Center) 90. In FIG. 1, only one mobile terminal 80 is shown, but there are actually a plurality of mobile terminals 80.

The mobile terminal 80 is a general mobile phone equipped with a GPS receiver. The GPS receiver has a GPS function for acquiring GPS position information by a signal from a GPS satellite. The mobile terminal 80 stores MSI (Mobile Subscriber Identity) and MSN (Mobile Subscriber Name) as identification information of the mobile terminal 80 in a memory.
The HLR 20 and the VLR 30 are devices that manage information on subscribers who have subscribed to the mobile communication service and location information of the mobile terminals 80 possessed by the subscribers.
The GMLC 90 is a control station having a function of providing a location information providing service, and plays a role of an SCP (Service Control Point).

[Configuration of integrated location information management device]
The location information integrated management device 10 includes a CPU (Central Processing Unit), a storage device, and a communication interface, and has a general computer hardware configuration. The storage device of the location information integrated management device 10 stores software (program, database, etc.) for executing various calculations and integrating and managing location information of the mobile terminal 80.
FIG. 2 shows a functional configuration realized by the position information integrated management apparatus 10 by using these hardware and software. As shown in the figure, the location information integrated management device 10 includes a location information conversion unit 11, a time-series location information management unit 12, a movement status management unit 13, a paging area specifying unit 14, and a paging area notification unit 15. And an access interface (I / F) unit 16, a location registration cycle changing unit 18, and a location registration cycle management unit 19. Each function will be described below.

[Time Series Location Information Management Department]
The time-series position information management unit 12 manages a history of position information of the mobile terminal 80. Here, the location information of the mobile terminal 80 includes location registration area information acquired by location registration processing in the mobile communication network and GPS location information acquired by the GPS function of the mobile terminal 80.
As a specific location information management method, during location registration processing, the location information integrated management apparatus 10 accepts transfer of a location information registration signal from the VLR 30 or the HLR 20. The time-series position information management unit 12 registers the position registration area information included in the position information registration signal in a database held by the position information integrated management apparatus 10 together with information indicating an error in the acquisition time and the position registration area information. .

  Here, the “location registration area information” is information that has been conventionally managed by the HLR 20 or the VLR 30. Hereinafter, the location registration area information is also referred to as “VLR / HLR location information”. Conventionally, the location registration area information is expressed by LAI (Location Area Identification) or RAI (Routing Area Identifier), but in the present embodiment, the location registration area information Is represented by at least one identification information of LAI, RAI, sector identifier (also referred to as “sector number”), radio control station identifier (also referred to as “RNC-ID”), and base station identifier. .

  “LAI” is an area identifier used for circuit switching, and “RAI” is an area identifier used for packet switching. LAI / RAI represents a service area covered by the L-MSC 50. “Sector identifier” is an identifier of a sector and represents a service area covered by the BS 70. A set of multiple sectors is defined as LA / RA. “Radio control station identifier” is an identifier of the RNC 60 and represents a service area covered by the RNC 60. “Base station identifier” is an identifier of the BS 70. The expression format of LAI / RAI, sector identifier, and radio control station identifier is defined in 3GPP TS 23.003 V6.4.0.

Further, the time-series position information management unit 12 registers the acquired GPS position information in the database together with the acquisition time and the GPS position information error, triggered by the GPS position information acquisition process of the mobile terminal 80. The GPS position information acquisition process in the present embodiment refers to a process in which the mobile terminal 80 acquires GPS position information by a GPS function by a predetermined trigger and transmits the GPS position information to the VLR 30 or the HLR 20. The GPS position information is information represented by latitude and longitude, and the expression format is defined by 3GPP TS V23.032 V5.0.0.
The access interface unit 16 is an interface for accessing the position information managed by the time-series position information management unit 12 from the outside.

[Location information converter]
The position information conversion unit 11 performs position information conversion processing that mutually converts GPS position information and position registration area information position information and changes the expression format of the position information.
When performing the position information conversion process, the conversion table 17 stored in the storage device of the position information integrated management apparatus 10 is used. The conversion table 17 is a mapping table in which the latitude / longitude information of the center of the position registration area represented by the position registration area information is associated with area radius information indicating the radius of the position registration area.

FIG. 3 shows an example of the data structure of the conversion table 17. As shown in the figure, the conversion table 17 includes “LAI”, “center GPS position information” indicating the latitude and longitude of the center of LA identified by LAI, “area radius” indicating the radius of LA, It includes “sector number”, “center GPS position information” indicating the latitude and longitude of the center of the sector identified by the sector number, and “area radius” indicating the radius of the sector. The position information conversion unit 11 converts a certain GPS position information into an LAI for identifying a certain LA or a sector number for identifying a certain sector when the certain GPS position information is included within a certain LA or certain sector. Convert.
In the conversion table 17 shown in FIG. 3, the LAI and the sector number are used as the location registration area information, but a radio control station identifier, a radio base station identifier, or the like may be used.

[Movement Status Management Department]
The movement status management unit 13 manages the movement status of the mobile terminal 80. The function of the movement status management unit 13 will be described in more detail. The movement status management unit 13 includes a movement speed information management function 132 and an acceleration information management function 131.
The movement speed information management function 132 registers and manages the movement speed of the mobile terminal 80 calculated based on the difference in the acquisition time of the position information of the mobile terminal 80 in a database. When the movement speed information management function 132 receives the movement speed information of the mobile terminal 80 from an external device that can directly measure the movement speed of the mobile terminal 80, the movement speed information management function 132 receives the movement speed of the mobile terminal 80. Register and manage information in the database.

The acceleration information management function 131 registers and manages the acceleration of the mobile terminal 80 calculated based on the difference in the acquisition time of the position information of the mobile terminal 80 in the database. In addition, when the acceleration information management function 131 receives the acceleration of the mobile terminal 80 from an external device that can directly measure the acceleration of the mobile terminal 80, the acceleration information management function 131 registers the received acceleration of the mobile terminal 80 in the database. Manage.
FIG. 4 shows an example of information managed in the database by the time-series position information management unit 12 and the movement status management unit 13. The time-series position information management unit 12 manages the LAI, LAI error, radio base station identifier, sector identifier, GPS position information, and GPS position information error history shown in FIG. Further, the history of acceleration and moving speed shown in FIG.

[Paging area specific part]
The paging area specifying unit 14 specifies a paging area where paging processing should be performed based on the latest position information managed by the time-series position information management unit 12.
Specifically, the paging area specifying unit 14 receives a location information inquiry signal from the VLR 30 or HLR 20 via the access interface unit 16 when an incoming information call signal is transmitted to the VLR 30 or HLR 20. When receiving the position information inquiry signal, the paging area specifying unit 14 obtains the latest position information from the history of position information managed by the time-series position information management unit 12. When the data type of the latest position information acquired is the data type of GPS position information, the paging area specifying unit 14 converts the acquired GPS position information into position registration area information by the position information conversion unit 11. The paging area specifying unit 14 specifies the position registration area represented by the converted position registration area information as a paging area. Here, if the correspondence relationship between the GPS position information and the sector is stored in the conversion table 17, the paging area can be specified in units of sectors, which is the minimum unit of the position registration area information.

  On the other hand, when the data type of the acquired latest position information is the data type of the position registration area information, the paging area specifying unit 14 sets the position registration area represented by the acquired latest position information as the paging area. Identify. Here, if the sector identifier is managed as the position registration area information in the time-series position information management unit 12, the paging area can be specified on a sector basis.

Further, the paging area specifying unit 14 changes the size of the paging area by changing the identifier for specifying the paging area based on the moving status of the mobile terminal 80 managed by the moving status managing unit 13. Let For example, the paging area specifying unit 14 increases the specified paging area as at least one of the moving speed and acceleration managed by the time-series position information management unit 12 increases. That is, in order to enlarge the paging area, the paging area specifying unit 14 changes the identifier for specifying the paging area to an identifier indicating a wider area, such as sector identifier → radio control station identifier → LAI / RAI.
The paging area notifying unit 15 receives the location information inquiry signal of the mobile terminal 80 from an external device such as the HLR 20 or the VLR 30 when an incoming call to the mobile terminal 80 occurs, and the paging area specified by the paging area specifying unit 14 To be notified.

[Location registration cycle change section]
The location registration cycle changing unit 18 is a cycle (time interval) in which the location information of the mobile terminal 80 is registered in the HLR 20 or the VLR 30 based on the travel status of the mobile terminal 80 managed by the travel status management unit 13, that is, The time series position information management unit 12 changes the period for acquiring the position information of the mobile terminal 80 (hereinafter referred to as “position registration period”).

  For example, the location registration cycle changing unit 18 changes the location registration cycle so that the location information of the mobile terminal 80 is registered every time the mobile terminal 80 moves by a predetermined distance. This predetermined distance can be set according to the radius or diameter of the radio frequency area or the service area covered by the L-MSC 50. In order to perform registration of position information every time the mobile terminal 80 moves by a predetermined distance, the position registration cycle changing unit 18 determines that the mobile terminal 80 changes when the moving speed of the mobile terminal 80 changes at high speed. The position registration cycle is changed to a cycle shorter than before. On the other hand, when the moving speed of the mobile terminal 80 changes to a low speed, the location registration cycle changing unit 18 changes the location registration cycle of the mobile terminal 80 to a longer cycle than before. Further, when the mobile terminal 80 is hardly moving, the location registration cycle changing unit 18 does not change the location registration cycle of the mobile terminal 80.

As a specific procedure, the location registration cycle changing unit 18 changes the location registration cycle as follows, for example.
(1) First, the location registration cycle changing unit 18 determines whether or not to change the location registration cycle based on acceleration information managed by the acceleration information management function 131 of the movement status management unit 13.
Specifically, when the absolute value of the difference between the current acceleration information V _i and the latest past acceleration information V _i-1 is less than or equal to a predetermined value α (α is an integer of 0 or more) (that is, | V _i In the case of −V _i−1 | ≦ α), since the change in the moving speed of the mobile terminal 80 is very small, the position registration cycle changing unit 18 determines that it is not necessary to change the position registration cycle.
On the other hand, when the absolute value of the difference between the current acceleration information V _i and the latest past acceleration information V _i-1 exceeds a predetermined value α (that is, | V _i −V _i-1 |> α. In the case), since the moving speed of the mobile terminal 80 is changing, the position registration cycle changing unit 18 determines that the position registration cycle needs to be changed.

(2) When it is determined in (1) that it is necessary to change the location registration cycle, the location registration cycle changing unit 18 manages the mobile terminal managed by the moving speed information management function 132 of the moving status management unit 13. Based on the moving speed information of 80, the changed position registration cycle is determined. For example, when the latest moving speed information of the mobile terminal 80 is Sm / min and it is necessary to register the position information every predetermined distance Xm, the position registration cycle changing unit 18 sets the position registration cycle to X Decide to change to / S minute interval. The location registration cycle changing unit 18 registers the determined location registration cycle in the location registration cycle management unit 19. In addition, the mobile terminal 80 is notified of the determined location registration cycle.

The location registration cycle management unit 19 records and manages the location registration cycle for each mobile terminal 80 in a database. The mobile terminal 80 transmits position information to the mobile communication network at the notified cycle.
In addition to determining whether or not to change the location registration cycle based on the acceleration information, it is also possible to determine whether or not to change the location registration cycle based on the traffic situation of the mobile communication network. Specifically, the location registration cycle changing unit 18 acquires the traffic status of the mobile communication network and determines whether congestion has occurred. When it is determined that no congestion has occurred, the location registration cycle changing unit 18 determines to change the location registration cycle. On the other hand, when it is determined that the current congestion state is present, the location registration cycle changing unit 18 Decide not to make any changes.

In addition to the method for changing the location registration cycle described above, the location registration cycle may be changed depending on whether the moving speed of the mobile terminal 80 exceeds a certain threshold.
The position registration cycle changing unit 18 may change the position registration cycle of both the position registration area information of the mobile terminal 80 and the GPS position information, or the position registration of only one of the position information. The period may be changed.

(Location information management procedure)
Next, with reference to FIG. 5, a procedure in which the time-series location information management unit 12 acquires and manages location information of the mobile terminal 80 will be described.
When the HLR 20 receives a location information registration signal including the location information of the mobile terminal 80 from an external device (step S111), the HLR 20 transfers the location information registration signal to the location information integrated management device 10 (step S121).
Further, when the VLR 30 receives a location information registration signal from an external device (step S112), the VLR 30 transfers the location information registration signal to the location information integrated management device 10 (step S122).

Further, when the GMLC 90 acquires the position information of the mobile terminal 80, the GMLC 90 transmits a position information registration signal including the position information of the mobile terminal 80 to the position information integrated management apparatus 10 (step S113).
The time-series position information management unit 12 of the position information integrated management apparatus 10 registers the position information of the mobile terminal 80 included in the received position information registration signal in a database held by the own apparatus 10 (step S131).

  If the position information included in the received position information registration signal is GPS position information, the GPS position information may be registered in the database after being converted into position registration area information by the position information conversion unit 11. (Step S132). This eliminates the need to convert the GPS location information into location registration area information when receiving an incoming call to the mobile terminal 80, and improves the processing efficiency when receiving an incoming call.

  After registering the position information in the database, the time-series position information management unit 12 returns a position information registration response signal to the HLR 20 that has transmitted the position information registration signal in step S121 (step S141). The HLR 20 returns a position information registration response signal to the external device that has transmitted the position information registration signal in step S111 (step S151).

The time-series position information management unit 12 returns a position information registration response signal to the VLR 30 that has transmitted the position information registration signal in step S122 (step S142). The VLR 30 returns a position information registration response signal to the external device that has transmitted the position information registration signal in step S112 (step S152).
In addition, the time-series position information management unit 12 returns a position information registration response signal to the GMLC 90 that has transmitted the position information registration signal in step S113 (step S143).

(Location registration process)
Next, the procedure of location registration processing in the mobile communication network will be described with reference to FIG. This location registration process is performed for each location registration cycle managed by the location registration cycle management unit 19.
As shown in the figure, during the location registration process, a location information registration signal is transmitted from the mobile terminal 80 to the VLR 30 via the BS 70, the RNC 60, and the L-MSC 50. The VLR 30 stores position information included in the position information registration signal. In the location information registration signal, as location information, in addition to the conventional location registration area information (MSI / MSN and LAI / RAI), newly added location registration area information (where the mobile terminal 80 is located) RNC 60 radio control station identifier, BS 70 sector identifier), and GPS location information. The HLR 20 manages the correspondence between the MSI / MSN and the VLR 30 as position information.

In response to this location registration processing, location information is also registered in the location information integrated management apparatus 10.
The newly added information (radio control station identifier, sector identifier, and GPS location information) may be managed only by the location information integrated management device 10 without being managed by the VLR 30. Further, the location information registration signal may further include an identifier of the BS 70. In addition, the location information registration signal at the time of location registration processing only needs to include at least identification information (MSI / MSN) and location registration area information of the mobile terminal 80, and does not include GPS location information. It doesn't matter.

(GPS location information registration process)
Next, GPS position information registration processing will be described with reference to FIG. The GPS location information registration process shown in FIG. 7 is performed for each location registration cycle managed by the location registration cycle management unit 19 or from another network such as an ISP (Internet Service Provider) to the location information service. This is performed when an acquisition request signal for position information to be used is received.
When the SCP receives a location information acquisition request signal for location information service from the ISP (step S201), the location information acquisition request signal is transferred to the G-MSC 40, L-MSC 50, RNC 60, BS 70, and mobile terminal 80. (Steps S202, S203, S204, S205, S206).

  When receiving the position information acquisition request signal, the mobile terminal 80 returns a position information acquisition request response signal including MSI / MSN, LAI / RAI, radio control station identifier, sector identifier, and GPS position information (step S207). The position information acquisition request response signal is transferred to the BS 70, the RNC 60, and the VLR 30 (steps S208 and S209). The VLR 30 registers the position information included in the position information acquisition request response signal in the memory. Thereafter, the position information acquisition request response signal is transferred from the VLR 30 to the G-MSC 40, the SCP, and the ISP (steps S210, S211, and S212). The HLR 20 manages the correspondence between the MSI / MSN and the VLR 30 as position information. With the above GPS position information registration process, the GPS position information is also registered in the position information integrated management apparatus 10.

In addition, the identifier of the BS 70 may be included in the position information acquisition request response signal. In addition, the position information acquisition request response signal at the time of the GPS position information registration process may include at least the identification information (MSI / MSN) of the mobile terminal 80 and the GPS position information, and the position registration area information (LAI). / RAI, radio control station identifier, and sector identifier) may not be included. Further, the GPS position information may be managed only by the position information integrated management device 10.
Thus, the location information integrated management system that has received a location information service request from another network such as an ISP can acquire GPS location information in cooperation with the mobile terminal 80 and the BS 70.

(Mobile terminal status management)
Next, the movement status management of the mobile terminal 80 by the movement status management unit 13 will be described with reference to FIG.
When the movement speed information management function 132 of the movement status management unit 13 directly receives a movement speed information notification signal including movement speed information of the mobile terminal 80 from an external device (step S301), the movement speed information management function 132 includes the movement speed information notification signal. The moving speed information of the mobile terminal 80 to be registered is registered in the database (step S302).

  In addition, the moving speed information management function 132 calculates the moving speed of the mobile terminal 80 when the moving speed information of the mobile terminal 80 cannot be directly received. Specifically, the movement speed information management function 132 receives the new position information of the mobile terminal 80 from the external device, the acquisition time of the position information, and the latest information managed by the time-series position information management unit 12. The moving speed of the mobile terminal 80 is calculated based on the difference from the acquisition time of the position information (the calculation formula is the difference in the distance of the position information / the difference in the acquisition time of the position information). The moving speed information management function 132 registers the calculated moving speed information in the database (step S303).

When the acceleration information management function 131 directly receives the acceleration information notification signal including the acceleration information of the mobile terminal 80 from the external device (step S304), the acceleration information management function 131 stores the acceleration information of the mobile terminal 80 included in the acceleration information notification signal in the database. Registration is performed (step S305).
The acceleration information management function 131 may calculate the acceleration of the mobile terminal 80 when the acceleration information of the mobile terminal 80 cannot be directly received. Specifically, when the acceleration information management function 131 receives new position information of the mobile terminal 80 from the external device, the acceleration information management function 131 acquires the acquisition time of the position information and the latest information managed by the time-series position information management unit 12. Based on the difference from the acquisition time of the position information, the acceleration of the mobile terminal 80 is calculated (the calculation formula is the difference of the distance of the position information / the square of the difference of the acquisition time of the position information). The acceleration information management function 131 registers the calculated acceleration information in the database.

(Process when receiving incoming call signal)
Next, a processing procedure when the HLR 20 or the VLR 30 receives an incoming information call signal when receiving an incoming call to the mobile terminal 80 will be described with reference to FIG.
First, when receiving an incoming information call signal (step S401), the HLR 20 transmits a location information inquiry signal to the location information integrated management device 10 (step S402).
When the position information integrated management apparatus 10 receives the position information inquiry signal, the time-series position information management unit 12 reads the latest position information from the database in time (step S4031).

  The paging area specifying unit 14 specifies a paging area based on the latest position information read from the database. Specifically, the paging area specifying unit 14 determines whether or not the data type of the latest read position information is the GPS position information type (step S4032). When the location information data type is the GPS location information type (step S4032; Yes), the paging area specifying unit 14 converts the GPS location information into the VLR / HLR location information (LAI / RAI, RNC−) by the location information conversion unit 11. ID and sector identifier) (step S4033). On the other hand, if the data type of the latest read position information is already the VLR / HLR position information type (step S4032; No), the read latest position information is not performed without performing the position information conversion process. The location registration area represented by the information is specified as the paging area.

  The paging area specifying unit 14 specifies a paging area as small as possible in order to perform efficient paging processing, but specifies it based on the movement status of the mobile terminal 80 managed by the movement status management unit 13. The size of the paging area may be changed. For example, when the moving speed or acceleration of the mobile terminal 80 is equal to or greater than a predetermined first threshold, the paging area specifying unit 14 sets the paging area in units of LAI / RAI in order to increase the paging area. Identify. Specifically, the paging area specifying unit 14 determines the maximum location registration area when the latest location information read from the database includes, for example, an LAI / RAI, an RNC-ID, and a sector identifier. The unit LAI / RAI is selected as the paging area identifier. In addition, when the latest position information read from the database is GPS position information, the paging area specifying unit 14 converts the GPS position information into LAI / RAI by the position information conversion unit 11, and the LAI / RAI Let RAI be a paging area identifier. On the other hand, when the moving speed or acceleration of the mobile terminal 80 is less than the first threshold and greater than or equal to the second threshold, the paging area specifying unit 14 specifies the paging area in units of RNC-IDs. . On the other hand, when the moving speed or acceleration of the mobile terminal 80 is less than the second threshold value, the paging area specifying unit 14 specifies the paging area in units of sectors that are the minimum units of the position registration area.

The paging area notification unit 15 sets information (LAI / RAI, RNC-ID, and sector identifier) about the paging area specified by the paging area specifying unit 14 in the position information inquiry response signal, and sets the access interface unit 16 Via the HLR 20 (step S404).
The HLR 20 sets information about the paging area in the incoming information call response signal, and returns an incoming information call response signal to the external device that has transmitted the incoming information call signal in step S401 (step S405). The external device transmits a paging signal toward the sector identified by the sector identifier based on the information about the paging area included in the returned incoming information call response signal, and performs paging processing.
Since the processing procedure when the VLR 30 receives the incoming information call signal is the same as the processing procedure when the HLR 20 receives the incoming information call signal, a duplicate description is omitted.

(Location information conversion process)
Next, details of the position information conversion process performed by the position information conversion unit 11 will be described with reference to FIG. Since the GPS position information is represented by latitude and longitude, when the latest position information managed by the time-series position information management unit 12 is GPS position information, the GPS position information is stored in the position registration area in order to perform paging processing. It is necessary to identify the paging area by converting it into information.

The position information conversion unit 11 uses the conversion table 17 to determine in which position registration area the GPS position information is included.
In the example illustrated in FIG. 10, the time-series position information management unit 12 sets the GPS position information L1 “N35.13.32.19, E139.39.48.10” registered at 15:30 on October 29 as the latest position information. (See FIG. 10A). The latest GPS position information L1 is a sector (sector number is “258”) identified by the center GPS position information “N35.13.32.21, E139.39.48.10” and the area radius r “100 m”. (See the conversion table 17 in FIG. 10B).

  Also, the latest GPS position information L1 is obtained from the conversion table 17 by identifying the center GPS position information as “N35.13.32, E139.39.48” and the area radius r as “1 km” (LAI is “ 1 ”(LA). Therefore, the position information conversion unit 11 converts the GPS position information L1 “N35.13.32.19, E139.39.48.10” into the sector number “258” and LAI “1”. This sector number “258” represents the minimum paging area for performing the paging process.

(Paging process)
Next, a paging process performed by the location information integrated management system will be described with reference to FIG.
First, at the time of a call connection request (incoming call) from another network, the G-MSC 40 transmits an incoming call information call signal to the HLR 20 (step S501).
When receiving the incoming information call signal, the HLR 20 transmits a location information inquiry signal to the location information integrated management apparatus 10 (step S502).
The paging area specifying unit 14 of the position information integrated management device 10 acquires the latest position information from the database managed by the time-series position information management unit 12. When the acquired latest position information is GPS position information, the paging area specifying unit 14 uses the position information conversion unit 11 to convert the GPS position information into position registration area information (LAI / RAI, RNC-ID, and sector). Number).

The paging area notifying unit 15 sets the location registration area information indicating the paging area specified by the paging area specifying unit 14 in the location inquiry response signal, and returns the location inquiry response signal to the HLR 20 (step S503).
The HLR 20 sets the notified location registration area information as a paging signal (incoming information call signal) and transmits it (step S504). The paging signal is sequentially transferred to the L-MSC 50, the RNC 60, and the BS 70 based on the set information, and the paging process is performed in a spot manner in the sector identified by the sector number (steps S505 and S506). As described above, since the paging process can be performed in the sector that is the minimum unit area managed by the mobile communication network, the efficient paging process can be performed.

  As described above, when the position registration process and the GPS position information acquisition process occur, position information having different representation formats of the position registration area information and the GPS position information is integratedly managed by the time-series position information management unit 12. Since the latest position information managed by the time-series position information management unit 12 can be easily acquired when an incoming call is received, the GPS position information can be used to specify a paging area, and the position information management and paging process can be performed. Efficiency can be improved.

In addition, since the sector identifier can be included in the location registration area information and the conversion table 17 managed by the time-series location information management unit 12, the minimum paging area can be specified and efficient paging processing can be performed. .
In addition, since the size of the paging area is changed depending on the movement status of the mobile terminal 80, the paging area having the optimum size can be specified depending on the movement status of the mobile terminal 80 while limiting the paging area to a small range. Is possible.

In addition, since the period at which the location information of the mobile terminal 80 is acquired is changed based on the travel status of the mobile terminal 80, the time-series location information management unit 12 appropriately changes according to the travel status of the mobile terminal 80. It is possible to acquire and manage position information for identifying a specific paging area.
In the above-described embodiment, the position information integrated management device 10 has been described as being configured by a single device, but may be configured by a plurality of devices. Further, the HLR 20, VLR 30, or L-MSC 50 may have the function of the time-series position information management unit 12 and the function of the position information conversion unit 11 included in the position information integrated management device 10.

  In the above-described embodiment, the sector identifier is added to the position information registration signal at the time of the location registration process, and the time-series position information management unit 12 manages the sector identifier. 12 may manage only LAI / RAI. Even in this case, by registering the correspondence between the GPS position information and the sector in the conversion table 17, the GPS position information can be converted into a sector identifier and the paging area can be specified in units of sectors. It is possible to specify a small paging area.

In the above-described embodiment, the minimum unit of the location registration area is described as a sector. However, when there is a smaller unit of the location registration area, the information is converted to the time-series location information management unit 12 or the conversion unit. Management may be performed in the table 17.
In the above-described embodiment, the position registration area is described as being represented by the center latitude and longitude and the radius, that is, as a circle. However, this is merely an example, and for example, the position registration area May be represented by a hexagon or an ellipse.

  The location registration area information and GPS location information of the mobile terminal can be managed in an integrated manner, and can be used for efficient paging processing using the GPS location information.

It is a figure showing the whole position information integrated management system composition concerning an embodiment of the invention. It is a block diagram which shows the function structure of the positional information integrated management apparatus which concerns on the embodiment. It is a figure which shows an example of the data structure of the conversion table which concerns on the embodiment. It is a figure which shows an example of the information managed by the time series position information management part and movement status management part which concern on the embodiment. It is a figure for demonstrating the procedure in which the time-sequential location information management part which concerns on the embodiment acquires and manages the location information of a mobile terminal. It is a figure for demonstrating the position registration process which concerns on the same embodiment. It is a figure for demonstrating the registration process of GPS position information which concerns on the embodiment. It is a figure for demonstrating the movement status management which concerns on the same embodiment. It is a figure for demonstrating the process sequence at the time of reception of the incoming call information call signal based on the embodiment. It is a figure for demonstrating the positional information conversion process which concerns on the same embodiment. It is a figure for demonstrating the paging process which concerns on the same embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Position information integrated management apparatus 11 Position information conversion part 12 Time-sequential position information management part 13 Movement situation management part 131 Acceleration information management function 132 Movement speed information management function 14 Paging area specification part 15 Paging area notification part 16 Access interface part 17 Conversion Table 18 Location registration cycle change unit 19 Location registration cycle management unit 20 HLR
30 VLR
40 G-MSC
50 L-MSC
60 RNC
70 BS
80 Mobile terminal 90 GMLC

Claims (7)

Managing a history of location information of the mobile terminal including location registration area information acquired by location registration processing in a mobile communication network and GPS location information acquired by a GPS (Global Positioning System) function provided in the mobile terminal Time-series location information management means;
Paging area specifying means for specifying a paging area to be subjected to paging processing upon arrival at the mobile terminal based on the latest position information managed by the time-series position information managing means ;
Position information conversion means for converting the GPS position information into the position registration area information ,
The paging area specifying means is:
When the latest position information managed by the time-series position information management means is GPS position information, the position registration area represented by the position registration area information converted by the position information conversion means position information integrated management system for a particular be characterized Rukoto as the paging area of. The paging area notifying means for notifying the paging area specified by the paging area specifying means to an external device that performs paging processing when there is an incoming call to the mobile terminal. The location information integrated management device described. A conversion table associating the latitude and longitude information of the center of the position registration area represented by the position registration area information with area radius information indicating the radius of the position registration area;
The position information conversion means performs the conversion using the conversion table.
The position information integrated management apparatus according to claim 1 or 2. The location registration area information includes identification information representing at least one of a service area of a local exchange, a service area of a radio control station, and a service area of a radio base station.
The position information integrated management apparatus according to any one of claims 1 to 3. Based on the difference in the acquisition time of the location information of the mobile terminal, further comprises a movement status management means for managing the movement status of the mobile terminal,
The paging area specifying means is:
The size of the specified paging area is changed based on the movement status of the mobile terminal managed by the movement status management means.
The location information integrated management device according to any one of claims 1 to 4. The apparatus further comprises position registration period changing means for changing a period in which position information of the mobile terminal is acquired based on the movement status of the mobile terminal managed by the movement status management means.
The position information integrated management apparatus according to claim 5. Time-series location information management for managing a history of location information of the mobile terminal including location registration area information obtained by location registration processing in a mobile communication network and GPS location information obtained by a GPS function provided in the mobile terminal Steps,
A conversion step of converting the GPS location information into the location registration area information when the latest location information managed in the time-series location information management step is GPS location information;
A paging area specifying step for specifying a position registration area represented by the position registration area information converted in the conversion step as a paging area to be subjected to paging processing when receiving an incoming call to the mobile terminal;
A paging process step for performing a paging process in the paging area identified in the paging area identifying step;
A location information integrated management method characterized by comprising:

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