JPH1070757A - Position information management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the frequency of accessing the REP of a remote position by managing the home location information of a terminal which lately accessed a repository (REP) for managing the home location information of all portable terminals at the location. SOLUTION: In the respective regionally distributed plural locations 42, 43, 44,..., distribution control/management are performed by call processors 421, 431, 444... for processing calls from terminals present in an area and data base HLRs(home location registers) 422, 432, 442,... and VLRs(visitor location register) 423, 433 and 443.... The home location information of all the terminals is managed by one repository (REP) 41. HD Caches 426, 436 and 446 are installed to the respective locations and caching is performed to the respective locations 42, 43, 44,... for the home location information of the terminal which lately accessed the REP 41. Thus, the REP 41 of the remote position is less accessed and connection delay time is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable terminal which roams between locations by a plurality of location information management devices arranged at a plurality of locations dispersed in a region and distributed control / management by the location information management devices. The present invention relates to a location information management system that provides services such as search and communication connection.

[0002]

2. Description of the Related Art The location information of a portable terminal includes home location information which is correspondence information between the telephone number and the home location, and location location information which is correspondence information between the telephone number and the location. Exists. If the mobile terminal is located in the location where the location information management device is located, the location information is the CS requesting the location registration.
(Cell station) Indicates information (type 1) of the zone, and when roaming to another location, indicates information (type 2) of the roaming location.

In general, a location information management system manages a location in a mobile terminal by moving and receiving a location registration request from the mobile terminal, and based on the management information, searches for a location, a communication connection, and the like. Provide location information management services.

[0004] Such a location information management system has conventionally been provided with an HLR (Home Location Reg).
ister), VLR (Visitor Locati)
onRegister), REP (Repositor)
y), and a database called LD Cache. Here, the HLR manages the in-location information on the mobile terminal having the location as a home location. The VLR manages the location information on the mobile terminal roaming from another location to that location. The REP manages home location information for all mobile terminals. LD Cache is
Manages the location information of the portable terminal at the location that has recently accessed the REP (accessed to know the location information of the destination terminal when a call is made from a terminal within the location). However, this information does not show an accurate value if the mobile terminal changes the location after the acquisition.

FIGS. 1 to 3 show an HLR / V in which a home location can be freely set / changed regardless of a telephone number.
It is a conceptual diagram which shows each example of the conventional location information management system which employ | adopted the LR system.

FIG. 1 shows an example of a location information management system in which only one REP is installed. In FIG. 1, reference numeral 11 denotes a REP provided with only one REP in the entire system; Fig. 3 shows a location where a service is provided by the device. In FIG.
121, 131 and 141 are call processing means of the location information management device at the locations 12, 13 and 14;
2, 132 and 142 are locations 12, 13 and 1
HLR of the location information management device in No. 4, 123, 133
And 143 indicate VLRs of the location information management device at the locations 12, 13 and 14, respectively.

The procedure for inquiring the CS zone of the portable terminal located in the location 14 from the location information management apparatus of the location 12 as the home location (acquiring the located location information of type 1) is the same as the procedure described above. This will be described below with reference to the figures in parentheses in the figure.

(1), (2) HLR 122 and VL which are databases of the location information management device at the location 12
When the mobile terminal sends a request to obtain location information of the portable terminal to R123, a response indicating "none" is received from the HLR 122 and the VLR 123. (3) When the home location information acquisition request is sent to the REP 11, a response indicating that "the home location is the location 13" is received. (4) When a location information acquisition request for the portable terminal is sent to the HLR 132, which is a database of the location information management device at the location 13, a response indicating "location 14 (type 2)" is received from the HLR 132. (5) The mobile terminal sends a location information acquisition request to the VLR 143, which is a database of the location information management device of the location 14, and receives a response from the VLR 143 with type 1 location information.

FIG. 2 shows an example of a position information management system in which REPs are installed for each location.
Reference numerals 2, 23, and 24 indicate locations where services are provided by the respective location information management devices. In the same figure, 221, 231 and 241 are locations 2
The call processing means 222, 232 and 242 of the location information management device at 2, 23 and 24
HLR of location information management device in 3 and 24, 22
3, 233 and 243 are locations 22, 23 and 2
VLRs 224, 234 of the location information management device in FIG.
And 244 indicate REPs of the location information management device at the locations 22, 23 and 24, respectively.

The procedure for inquiring the CS zone of the portable terminal located in the location 24 from the location information management device of the location 22 with the location 23 as the home location will be described below with reference to the figures in parentheses in FIG. .

(1), (2) HLR 222 and VL which are databases of the location information management device of the location 22
When the location information acquisition request of the portable terminal is transmitted to R 223, a response indicating “none” is received from HLR 222 and VLR 223. (3) When the home location information acquisition request is sent to the REP 224 installed at the location 22, a response indicating that the home location is the location 23 is received. (4) When a location information acquisition request for the portable terminal is sent to the HLR 232, which is a database of the location information management device at the location 23, a response "location 24 (type 2)" is received from the HLR 232. (5) The mobile terminal sends a location information acquisition request to the VLR 243, which is a database of the location information management device at the location 24, and receives a response from the VLR 243 with the type 1 location information.

FIG. 3 shows a location information management system in which a database LDCache for caching location information of a portable terminal that has recently accessed only one REP (that is, not registered in the HLR / VLR) is installed for each location. As an example, in the figure, reference numeral 31 denotes only one REP provided in the entire system, and reference numerals 32, 33, and 34 denote locations provided with services by the location information management devices. In FIG.
21, 331 and 341 are call processing means of the location information management device at the locations 32, 33 and 34, 322,
332 and 342 are the HLRs of the location information management devices at the locations 32, 33 and 34, 323, 333 and 343 are the VLRs of the location information management devices at the locations 32, 33 and 34, 325, 335 and 345 are the locations 32, 33 and 34 Respectively shows the LD Cache of the position information management device.

A procedure for inquiring the CS zone of the portable terminal located in the location 34 from the location information management device of the location 32 with the location 33 as the home location will be described below with reference to the numbers in parentheses in FIG. . First, a case in which the location information of the portable terminal is registered in LD Cache 325 will be described.

(1), (2) HLR 322 and VL which are databases of the location information management device at the location 32
When the location request of the mobile terminal is acquired to R323, the HLR 322 and the VLR 323 receive a response indicating "none". (3) LD Cache installed at location 32
When the location information acquisition request of this mobile terminal is transmitted to 325, the location location information of this mobile terminal is registered in LD Cache 325, so that a response "location 34" is received. (6) As a result, the location information acquisition request of the portable terminal is sent to the VLR 343 which is the database of the location information management device at the location 34, and a response is received from the VLR 343 with the type 1 location information.

Next, a case where the location information of the portable terminal is not registered in the LD Cache 325 will be described.

(1), (2) HLR 322 and VL which are databases of the location information management device at the location 32
When the location request of the mobile terminal is acquired to R323, the HLR 322 and the VLR 323 receive a response indicating "none". (3) LD Cache installed at location 32
When the location request of the mobile terminal is transmitted to 325, a response indicating “none” is received because the location information of the mobile terminal is not registered in LD Cache 325. (4) When the home location information acquisition request is sent to the REP 31, a response indicating that "the home location is the location 33" is received. (5) When a location information acquisition request for the portable terminal is sent to the HLR 332, which is a database of the location information management device at the location 33, a response "location 34 (type 2)" is received from the HLR 332. (6) The mobile terminal sends a request for obtaining location information of the mobile terminal to the VLR 343, which is a database of the location information management device at the location 34, and receives a response from the VLR 343 with location information of the type 1 location. Since the location information of the mobile terminal is not registered in LD Cache 325,
The obtained location information of the portable terminal is transferred to LD Cach.
e325.

[0017]

According to the example of the location information management system shown in FIG. 1, if the location information of the portable terminal is not registered in the database of the inquiry area, it is usually installed at a remote location. Access to the REP 11 to increase the connection delay.
In addition, when the communication capacity with the REP is small, there is a disadvantage that the communication processing amount is reduced.

According to the example of the position information management system shown in FIG.
To install a plurality of REPs having the same information at a plurality of locations, respectively, register / change / update these REPs.
The management accompanying the deletion becomes complicated.

According to the example of the position information management system shown in FIG.
Since the location information is changed as the mobile terminal moves, if the movement is frequent, the probability that the location information in the LD Cache becomes erroneous increases, and the information is effectively used. More often not.

Therefore, the present invention solves the above-mentioned problems of the prior art. An object of the present invention is to provide a position information management system capable of reducing a connection delay time and increasing a communication processing amount.

Another object of the present invention is to provide a position information management system that can easily manage REPs.

Still another object of the present invention is to provide a position information management system which can correctly obtain information obtained from a database with a high probability and make it function effectively.

[0023]

According to the present invention, home location information, which is correspondence information between a telephone number for identifying a portable terminal and a home location of the portable terminal, is maintained, regardless of the telephone number. An HLR / VLR type location information management system capable of freely setting / changing a location, wherein home location information of a mobile communication terminal that has recently accessed a REP that manages home location information on all portable terminals at the location is managed. A position information management system is provided, in which means for performing the operations are arranged at each location.

Means for managing, in each location, home location information of the portable terminal of the location that recently accessed the REP (database HD Cache)
Is installed to cache the home location information of the mobile terminal. As described above, since the home location information of the mobile terminal once obtained can be used in the location, the frequency of accessing the REP installed at the remote location can be reduced, so that the connection delay time can be reduced,
The communication processing amount can be increased. Further, since the home location information in each unit (HD Cache) is not changed frequently, the probability that information obtained from this unit is erroneous is low, and the information often functions effectively.

Preferably, only one REP is provided in the entire system. Thereby, the home location information to be managed is not duplicated, and the management is facilitated.

[0026]

FIG. 4 is a conceptual diagram showing a position information management system according to an embodiment of the present invention.

This embodiment is an example of a location information management system having only one REP and having a new database HD Cache installed for each location. This HD Cache manages the home location information of the portable terminal at the location that has recently accessed the REP (accessed to know the home location of the terminating terminal at the time of location registration or calling from a terminal within the location). However, this information does not show an accurate value when the home location of the mobile terminal is changed after the acquisition.

In the figure, reference numeral 41 denotes only one REP provided in the entire system, reference numerals 42, 43, and 44 denote locations to which services are provided by each location information management device, reference numerals 421, 431, and 441 denote locations 42,
Call processing means of the location information management device in 43 and 44,
422, 432 and 442 are HLRs of the location information management devices at the locations 42, 43 and 44, 423 and 4
33 and 443 are VLRs, 426, 436 and 4 of the location information management devices at the locations 42, 43 and 44, respectively.
Reference numeral 46 denotes the HD Cache of the location information management device at the locations 42, 43, and 44, respectively.

The procedure for inquiring the CS zone of the portable terminal located in the location 44 from the location information management device of the location 42 with the location 43 as the home location will be described below with reference to the numerals in parentheses in FIG. . First, a case where the home location information of the portable terminal is registered in HD Cache 426 will be described.

(1), (2) HLR 422 and VL which are databases of the location information management device of the location 42
When the mobile terminal sends a request to obtain location information of the portable terminal to R423, a response indicating "none" is received from the HLR 422 and the VLR 423. (3) HD Cache installed at location 42
When the home location information acquisition request of the portable terminal is transmitted to 426, the home location information of the portable terminal is registered in HD Cache 426, and a response indicating that the home location is location 43 is received. (5) When the location information acquisition request of this portable terminal is sent to the HLR 432, which is the database of the location information management device at the location 43, a response “location 44 (type 2)” is received from the HLR 432. (6) As a result, a location information acquisition request for the portable terminal is sent to the VLR 443, which is a database of the location information management device at the location 44, and a response is received from the VLR 443 with type 1 location information.

Next, a case where the home location information of the portable terminal is not registered in HD Cache 426 will be described.

(1), (2) HLR 422 and VL which are databases of the location information management device of the location 42
When the mobile terminal sends a request to obtain location information of the portable terminal to R423, a response indicating "none" is received from the HLR 422 and the VLR 423. (3) HD Cache installed at location 42
When the home location information acquisition request of this mobile terminal is transmitted to 426, the home location information of this mobile terminal is not registered in HD Cache 426, and therefore, a response indicating “none” is received. (4) When the home location information acquisition request is sent to the REP 41, a response that “the home location is the location 43” is received. (5) When the location information acquisition request of this portable terminal is sent to the HLR 432, which is the database of the location information management device at the location 43, a response “location 44 (type 2)” is received from the HLR 432. (6) The mobile terminal sends a location information acquisition request for the portable terminal to the VLR 443, which is a database of the location information management device at the location 44, and receives a response from the VLR 443 with type 1 location information.

As described above, according to the present embodiment, the database HD Cache for managing the home location information of the mobile terminal of the location that has recently accessed the REP is installed in the location information management device of each location, It is configured to cache home location information. Therefore, the frequency of accessing the REP installed at a remote location can be reduced, so that the connection delay time can be reduced and the communication processing amount can be increased. Further, since only one REP is installed, the home location information to be managed is not duplicated, and the management is facilitated. Moreover, each HD
Since the home location information in the cache is not frequently changed, the probability that the information obtained from the HD cache is erroneous is low, and the information often functions effectively.

FIG. 5 is a block diagram showing a specific hardware configuration of the position information management system in the embodiment of FIG.

In the figure, reference numeral 51 denotes a public network / dedicated line;
2 is housed in the public network / dedicated line 51, and only one HD management device is installed in this system (in a state where a plurality of location information management devices are interconnected). Each of the locations where the service is provided by the management device is shown. In the example of FIG. 5, the locations 53 and 54 are managed by the high-performance private branch exchanges 531 and 541 (which constitute the location information management device in this example) accommodated in the public network / dedicated line 51, respectively. Indicates that the service will be provided. Similar services are provided for the locations 55 and 56, but their configuration is not described in detail in FIG.

The high-function private branch exchanges 531 and 541 have an I interface as a user-side interface, and are respectively CS532, CS533, and CS532.
542 and CS543. The calling zone (CS zone) of CS532 and CS533 and CS542 and CS543 is 5321, 5331, 5421.
And 5431. Further, 554 and 56
Reference numeral 4 denotes a mobile communication terminal having the locations 55 and 56 as home locations. in this case,
The mobile communication terminal 554 is located in the CS zone 5 of the location 53.
321, and the mobile communication terminal 564 is located in the CS zone 5431 of the location 54. These are identified by a unique telephone number DN within the network.

FIG. 6 is a diagram showing a functional configuration of the position information management system in the embodiment of FIG.

Within locations 53 and 54, 631 and 641, respectively, are sophisticated private branch exchanges 531.
And 541 have location information management functions, 632 and 63
3, 642 and 643 are CS functions of CS532 and 533 and CS542 and 543, and 654 and 664 are mobile communication functions of mobile communication terminals 554 and 564.

In the position information management function 631, a call processing function 6311 is a function of a call processing means, and has an information transmission function and an exchange function. HLR function 6312
Is a function of managing the location information of the mobile communication terminal having the location 53 as the home location. VLR
The function 6313 is a function of managing the location information of the mobile communication terminal roaming to the location 53.
The HD Cache function 6316 is a function of managing home location information of a mobile communication terminal that has recently accessed the REP at the location 53. Since this information is a value acquired by the HD management device 52, if the home location of the mobile communication terminal is changed after acquisition, the accurate value is not shown.

In the location information management function 641, a similar
A call processing function 6411, an HLR function 6412, a VLR function 6413, and an HD Cache function 6416 exist, and the other locations 55 and 56 have the same function as the location 53.

The HD management device 52 has only one REP function 62 provided in the system. The REP function 62 is a function for managing accurate home location information of all mobile communication terminals. The home location information is registered when the mobile communication terminal is newly registered, is changed when the mobile communication terminal is changed, and is deleted when the mobile communication terminal is deleted.

The public network / dedicated line 51 has a signal transfer function 61
1 and an information transfer function 612.

Next, an inter-location communication connection procedure in this embodiment will be described.

FIG. 7 shows a sequence in the case where the incoming mobile communication terminal 564 is not registered in the HD Cache function 6316 in the originating location 53 in the inter-location communication connection by the present system.

(1) Communication request of mobile communication terminal 554 (mobile communication terminal function 654) to mobile communication terminal 564 (mobile communication terminal function 664), (2) mobile communication terminal 554
A communication request to the mobile communication terminal 564, (3) a request to obtain authentication data (ATD) of the mobile communication terminal 554,
(4) ATD acquisition response of mobile communication terminal 554 (response to "none"), (5) ATD acquisition request of mobile communication terminal 554, (6) ATD acquisition response of mobile communication terminal 554 (response with ATD) (7) Authentication request of mobile communication terminal 554, (8) Authentication request of mobile communication terminal 554, (9) Authentication response of mobile communication terminal 554, (10) Mobile communication terminal 55
(11) Acquisition request of location information of mobile communication terminal 564, (12) Acquisition response of location information of mobile communication terminal 564 (response of "none"), (13) Mobile communication terminal (14) Acquisition response of the location information of the mobile communication terminal 564 (response to “none”), (15) Acquisition request of the home location information of the mobile communication terminal 564, (16) ) Acquisition response of home location information of mobile communication terminal 564 (response of “none”),
(17) Acquisition request of home location information of mobile communication terminal 564, (18) Acquisition request of home location information of mobile communication terminal 564, (19) Mobile communication terminal 564
Acquisition response of home location information (location 5
6), (20) Acquisition response of home location information of mobile communication terminal 564 (location 56 and response),
(21) a request to obtain the location information of the mobile communication terminal 564, (22) a request to obtain the location information of the mobile communication terminal 564, (23) a request to obtain the location information of the mobile communication terminal 564, (24) ) Acquisition response of location information of mobile communication terminal 564 (response as “location 54”), (25) Acquisition response of location information of location of mobile communication terminal 564 (response as “location 54”), (26) Movement Acquisition response of the location information of the communication terminal 564 (response as “location 54”), (27) Mobile communication terminal 56 of mobile communication terminal 554
(28) a communication request of the mobile communication terminal 554 to the mobile communication terminal 564, (29) a request to obtain the location information of the mobile communication terminal 564, and (30) a request of the location information of the mobile communication terminal 564. Acquisition response (response as “CS zone 5431”), (31) communication request of mobile communication terminal 554 to mobile communication terminal 564, (32) communication request of mobile communication terminal 554 to mobile communication terminal 564, --- during call- (33) The home location information of the mobile communication terminal 564 is registered in the HD Cache function 6316.

FIG. 8 shows a sequence in the case where the incoming mobile communication terminal 564 is registered in the HD Cache function 6316 in the originating location 53 in the inter-location communication connection by the present system.

(1) Communication request of mobile communication terminal 554 (mobile communication terminal function 654) to mobile communication terminal 564 (mobile communication terminal function 664), (2) mobile communication terminal 554
A communication request to the mobile communication terminal 564, (3) a request to obtain authentication data (ATD) of the mobile communication terminal 554,
(4) ATD acquisition response of mobile communication terminal 554 (response to "none"), (5) ATD acquisition request of mobile communication terminal 554, (6) ATD acquisition response of mobile communication terminal 554 (response with ATD) (7) Authentication request of mobile communication terminal 554, (8) Authentication request of mobile communication terminal 554, (9) Authentication response of mobile communication terminal 554, (10) Mobile communication terminal 55
(11) Acquisition request of location information of mobile communication terminal 564, (12) Acquisition response of location information of mobile communication terminal 564 (response of "none"), (13) Mobile communication terminal (14) Acquisition response of the location information of the mobile communication terminal 564 (response to “none”), (15) Acquisition request of the home location information of the mobile communication terminal 564, (16) ) Acquisition response of home location information of mobile communication terminal 564 (“location 5
6), (17) a request to obtain the location information of the mobile communication terminal 564, (18) a request to obtain the location information of the mobile communication terminal 564, and (19) the location information of the mobile communication terminal 564. (20) Acquisition response of location information of mobile communication terminal 564 (response with "location 54"), (21) Acquisition response of location information of mobile communication terminal 564 (response with "location 54") ), (22) Acquisition response of location information of mobile communication terminal 564 (response to “location 54”), (23) Communication request of mobile communication terminal 554 to mobile communication terminal 564, (24) Communication request of mobile communication terminal 554. A communication request to the mobile communication terminal 564,
(25) Acquisition request of the location information of the mobile communication terminal 564, (26) Acquisition response of the location information of the mobile communication terminal 564 (response with “CS zone 5431”), (27) Movement of the mobile communication terminal 554 (28) Mobile communication terminal 564 of mobile communication terminal 554
, Communication request for-

As described above, by providing the HD Cache in the high-performance school exchange device in the location, if the home location information is registered there, the inter-location communication for acquiring the information (inter-location communication) is performed. 7 (corresponding to (17) to (20) in FIG. 7) can be omitted, thereby greatly reducing the connection delay and reducing the signal amount between locations.

In the embodiment described above, a mobile terminal having a wireless interface has been described as a terminal of a communication system. However, the present invention is also applicable to a communication system having a mobile terminal having a wired interface as a terminal. Obviously, in this specification, these terminals are collectively referred to as portable terminals.

The embodiments described above all show the present invention by way of example and not by way of limitation, and the present invention can be embodied in various other modified and modified forms. Therefore, the scope of the present invention is defined only by the appended claims and their equivalents.

[0051]

As described in detail above, in the present invention,
By retaining home location information which is correspondence information between a telephone number for identifying a mobile terminal and a home location of the mobile terminal, the HLR / VLR system of the HLR / VLR system which can freely set / change the home location regardless of the telephone number. In a location information management system, means for managing home location information of a mobile communication terminal that has recently accessed a REP that manages home location information on all mobile terminals at the location is arranged at each location. That is, in each location, means for managing the home location information of the mobile terminal of the location that recently accessed the REP is installed, and the home location information of the mobile terminal is cached. Since the home location information of the mobile terminal once obtained can be used within that location, the REP installed at a remote location
Can reduce the frequency of access to the server, the connection delay time can be reduced, and the communication processing amount can be increased. Further, since the home location information in each means is not changed frequently, the probability that information obtained from this means is erroneous is low, and the information often functions effectively.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an example of a conventional location information management system.

FIG. 2 is a conceptual diagram showing an example of a conventional location information management system.

FIG. 3 is a conceptual diagram showing an example of a conventional location information management system.

FIG. 4 is a conceptual diagram illustrating a position information management system according to an embodiment of the present invention.

FIG. 5 is a block diagram showing a specific hardware configuration of the position information management system in the embodiment of FIG.

FIG. 6 is a diagram illustrating a functional configuration of a position information management system in the embodiment of FIG. 4;

FIG. 7 is a sequence diagram showing an example of an inter-location communication connection procedure in the system configuration of FIG. 6;

8 is a sequence diagram showing an example of an inter-location communication connection procedure in the system configuration of FIG. 6;

[Explanation of symbols]

41 REP 42, 43, 44, 53, 54, 55, 56 Location 51 Public network / dedicated line 52 HD management device 421, 431, 441 Call processing means 422, 432, 442 HLR 423, 433, 443 VLR 426, 436, 446 HD Cache 531, 541 High-performance private branch exchange 532, 533, 542, 543 CS 554, 564 Mobile communication terminal 5321, 5331, 5421, 5431 CS zone

Claims (2)

[Claims] 1. A home location can be freely set / changed irrespective of a telephone number by holding home location information which is correspondence information between a telephone number for identifying a mobile terminal and a home location of the mobile terminal. H
An LR / VLR type location information management system, wherein a means for managing home location information of a mobile communication terminal that has recently accessed a REP for managing home location information on all portable terminals at the location is arranged at each location. Characteristic location information management system. 2. The location information management system according to claim 1, wherein only one REP is provided in the entire system.