JP3240044B2 - Wide area network access method in mobile communication terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to one or more VAs.
The present invention relates to a method for accessing a wide area network in a portable mobile communication terminal such as a mobile phone or a PHS system for accessing an N service or other wide area network (hereinafter, simply referred to as a network). TECHNICAL FIELD The present invention relates to an invention that can always establish economical communication from an optimal access point without being aware of the situation.

[0002]

2. Description of the Related Art Generally, mobile communication terminals communicate with each other or communication terminals via a subscriber line exchange while moving through a plurality of communication areas. Access to a wide area network using this mobile communication terminal has been increasing in recent years. Each wide area network has an access point for each major area in consideration of the convenience of users scattered all over the country, and subscribers can select any access point and connect. I have.

[0003] In this case, the subscriber wants to connect to an economically optimal access point, but it is not clear where the nearest access point is while moving with the mobile communication terminal. Since only one access point was fixedly used, it was extremely uneconomical. That is, to search for the nearest access point,
Mobile subscribers must always recognize the area code of the communication area at the destination and input it to the mobile communication terminal, but usually mobile subscribers may use cars or transportation. Because there are many, it is common that the area code of each applicable area is not recognized, and even if it is recognized, if there is no access point corresponding to the city area, which access point is closest I don't know.

[0004] Wide area networks include PCVAN and Ni.
There is a commercial network (VAN service) by a plurality of carriers such as ftyserve, a large number of LANs, or a wide area network such as the Internet. For this reason, it is practically impossible for the mobile subscriber to always select an access point at the destination for each of the wide area networks, and it is difficult for the subscriber to afford economic communication.

[0005]

At present, there is no technique for overcoming such disadvantages. For example, in the case of NTT telephones, there is an automatic access point selection system disclosed in Japanese Patent Application Laid-Open No. 3-283961. A user of a VAN service can use a database to store all positional relationships between his / her central station and a plurality of access points. There is a system that manages and converts each distance value by the square block number of the central station and determines the access point that is the shortest distance from its own central station by distance calculation, but the access point is located at a position where different cities are adjacent. In some cases, it is unclear whether the access point that is the shortest distance from the centralized station has the lowest communication cost. Also, in the access point automatic selection system based on distance calculation, if a user tries to access various networks while moving through a plurality of communication areas like a PHS, the subscriber is forced to perform more complicated operations than necessary.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and provides an invention capable of selecting an economically optimal access point by a portable mobile communication terminal and automatically connecting to the access point. Aim.

[0007]

Of the object solutions for] claim 1 for solving the above problems the invention, the location registration information from the base fabric station via the PHS other mobile communication terminal capable of moving a plurality of location registration areas And using this location registration information as a key , one or more of the same area code or related area codes
A mobile communication terminal that communicates with a desired wide area network via a subscriber line exchange by searching for a VAN service or other wide area network access point and making a call based on the searched access point .
In the wide area network access method, the location registration
Corresponding area code and related area code using information as a key
Area code conversion table to search for, and the area code conversion
Area code storage to store the area code found in the table
Means and associated city searched in the area code conversion table
A related area code memory for storing an area code, and the area code
Area code or related area code stored in storage means
Access to the related area code stored in the
Supports access points to search for phone numbers of point
And a location registration information acquired from the base station.
By searching the area code conversion table with the
Every time the area code stored in the area code storage means is changed
The related area code in the related area code memory is also rewritten.
As well as the access point support table
To the area code stored in the area code storage means.
If there is no corresponding access point, the relevant area
Access using the relevant area code stored in
The best access point by searching for the next candidate of the point
In a wide area network access method in a mobile communication terminal.

In order to search for access points in the same area code area or the nearest area code area using the position registration information as a key, an access search table is created for each VAN service. It is preferable to use a table in which the access points of the corresponding VAN service are arranged in correspondence with the area code group of each location registration information.

In this case, if an attempt is made to search for an access point directly from the location registration information, not only does the search table become large, but also because the location registration information does not correspond to the area code, even if the access point is searched directly. It may be difficult to select an economically cheap access point. Therefore, the present invention provides a method for storing an area code stored in an area code storage means.
Every time the area code is changed, the related area code memory is also rewritten
As well as access point support tables
Area code access point corresponding to location information in Bull
If there is no access point,
Search for the next candidate of the event and select the best access point
I did it.

A second aspect of the present invention provides a PHS for effectively implementing such a wide area network access method.
It relates to another mobile communication terminal, a plurality of position registration
PHS and other mobile communication terminals that can move
One or more VAN services or other wide area networks via
Access the network and access points of each network
Mobile communication terminal that communicates with the
Oite, location registration information from the communication control signal from the base station
(Hereinafter referred to as position information) position data detection means
And the area code corresponding to this location information and the area code
Area code conversion table to search for related related area codes
And an area code saver for saving the searched area code
And a related area storing the searched related area code
Area code memory and area code stored in the area code storage means
Every time the area code is changed, it is stored in the related area code memory
Rewriting means for rewriting related area codes
And the area code stored in the area code storage means.
Or the relevant area code stored in the relevant area code memory
Number to search for the access point phone number.
Access point correspondence table and the access point pair
Area table stored in the area code storage means
If there is no access point corresponding to the number, the relevant area
Access using the relevant area code stored in
And means for the next candidate search scan point location registration
Area code or area code corresponding to location information for each move
Select the next candidate access point of the related area code and
The mobile communication terminal is characterized by performing communication.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings based on embodiments of the present invention. However, the functions, combinations, and the like of the components described in the embodiment are not intended to limit the scope of the present invention only to them, unless otherwise specified, but are merely illustrative examples. First, as shown in FIG. 2, the PHS mobile communication system has a PHS management center 40 for storing location information, a common line signaling network 30 and a digital exchange 31 (subscriber line exchange).
PHS connection device (relay station 32) wired through
And a plurality of base stations 20 wired to the relay station 32. The relay station 32 creates location information based on a location registration request from the base station 20.

[0012] The location registration in such a device is performed by first receiving location information broadcast from the radio base station 20 on the terminal 1 side, and if the location registration information stored in the PHS terminal 1 is different, the PHS terminal 1 It sends out a location registration signal to the wireless base station 20 in the wireless zone (location registration area) where you are located. Management center 40 via relay station 32
A position registration signal converted into a form required for the switching connection arrives at the terminal, and the position information is stored. Hereinafter, the above operation is repeated every time the PHS terminal 1 moves and the location registration area changes.

Therefore, the PHS terminal 1 always stores the information of the location registration area where the PHS terminal 1 is located. This is basically a similar system except that the location registration area in the case of a car phone is increased.

FIG. 1 is a block diagram showing an internal configuration of a PHS communication terminal according to an embodiment of the present invention. The PHS terminal 1 includes a PHS main unit 100 for performing location registration, calling, receiving and the like with the base station, an access point searching unit 200 for accessing each wide area network via the PHS main unit 100, Point search means 20
0 and a communication program 300 for instructing communication. 2 is an antenna.

The PHS main unit 100 includes a communication control unit 110 for controlling communications such as location registration with the base station, outgoing calls, incoming calls and the like.
A position data detecting unit 112 for detecting position registration information (position data) from the received contents; and an automatic calling unit for automatically calling based on the access point telephone number extracted by the access point searching unit 200. 113 and a call control unit 114. The position data detected by the position data
0 to convert the area code. The area code conversion means 120, as shown in FIG. 3, uses the area code table 121 in which the correspondence between the position data and the area code is arranged to obtain the area code corresponding to the position data detected by the position data detection means 112. The area code is read out and stored in the area code storage means 123 together with the location registration information.

That is, specifically, the area code table 121
As shown in FIG. 3, the area code corresponding to each area code and the surrounding area code, especially the area code of the ordinance-designated city or the prefectural office located closest to the corresponding area code, corresponds to the area code as the relevant area code. They are arranged. The position data conversion means 120 searches the area code table 121 using the position registration information as a key, and searches and reads an area code corresponding to the position registration information and a related area code around the area code.
The corresponding area code and the related area code around the area code are stored in the area code storage means 123.

The access point searching means 200 includes a business selecting means 220 for selecting one corresponding business table from the plurality of access point correspondence tables 211 to 213 based on an instruction from the communication program 300;
Corresponds to a plurality of access point correspondence tables 211 to 213 corresponding to each business operator, which arranges the relationship between a plurality of access points and area codes for each business operator, and the location registration information read from the area code storage means 123. Related area code memory 22 for temporarily storing the area code to be used and the related area code
1 to 223 and the associated area code memory 22 when there is no access point of the area code corresponding to the location registration information.
And a next candidate search unit 230 for finding the nearest access point based on 1 to 223.

Access point correspondence tables 211 and 2
Numeral 13 is provided for each communication carrier of each network as shown in FIG. 4. Each access point is represented by its telephone number, and a group of area codes that can be most economically connected to each access point is arranged. I have.

The related area code memories 221 to 223 are configured so that the area code stored in the area code storage means 123 is rewritten each time the area code is changed. Therefore, even if the PHS terminal moves from the current location registration area to the adjacent location registration area, the corresponding area code can be provided immediately. The next candidate search means 230 stores the related area code memories 221 to 22
The access point correspondence tables 211 to 213 are searched by using each area code of No. 3 as a key, and the telephone number of the corresponding access point having the lowest communication cost is obtained and PHS
Notify the automatic calling unit 113 of the main unit 100.

The PHS terminal 1 specifies the access point correspondence tables 211 to 213 corresponding to the target wide area network by the communication program 300, searches for a specific access point by the access point search means 200, and based on the point. A call is made via the automatic calling unit 113 and the call control unit 114, and a connection is made to the nearest access point via the base station 20 or the like. still,
The access point searching means 200 is configured not to operate during communication, so that there is no problem even if the subscriber performs network communication while moving through a plurality of location registration areas during access.

[0021]

As described above, according to the present invention, the telephone number of each access point is set in advance in a plurality of access point correspondence tables. For this reason, the subscriber does not need to store the telephone numbers of the access points for various networks, and can access without being aware of the movement of the communication area (location registration area). Also,
The nearest one can be automatically searched from the subscriber's location registration information. Therefore, even if the subscriber does not instruct the portable mobile communication terminal to perform a complicated operation, an economically optimal access point can be selected and automatically connected to the access point. Has a significant effect.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an internal configuration of a PHS communication terminal according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a PHS mobile communication system in the PHS communication terminal of FIG. 1;

FIG. 3 is an explanatory diagram showing an area code table in which correspondence between position data and area codes is arranged.

FIG. 4 is an access point correspondence table provided for each communication carrier of each network and arranging the telephone numbers of each access point in a group of area codes to which the most economical connection is possible.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 PS terminal 2 Antenna 20 Base station 31 Digital exchange 34 Location registration area 110 Communication control unit 112 Location data detection means 113 Automatic calling unit 114 Call control unit 120 Location data conversion means 121 Area code conversion table 123 Area code storage Means 200 Access point search means 211-213 Access point correspondence table 221-223 Related area code memory 220 Business selection means 230 Next candidate search means 300 Communication program

────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI H04B 7/26 109M (56) References JP-A-8-149564 (JP, A) JP-A 8-190574 (JP, A) JP-A-8-251056 (JP, A) JP-A-3-70354 (JP, A) JP-A-8-84197 (JP, A) JP-A-8-181794 (JP, A) JP-A-6-22054 (JP, A) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04B ^7/ 24-7/26 H04Q ⁷ /00-7/38

Claims (2)

(57) [Claims] (1)PH that can move to multiple location registration areas
S Location registration from base station via other mobile communication terminal
Get the information and use this location registration information as a key
One or more VAN services in the area code or related area code area
Services and other wide area network access points
Search and make a call based on the search access point
Depending on the situation, the desired wide area network can be
workWhenWide area network for mobile communication terminals performing communication
In the work access method, Key the location registration information
To find the corresponding area code and its related area code
Area code conversion table, Stores the area code searched in the area code conversion table
Area code storage means, The relevant area code found in the area code conversion table is
A related area code memory to memorize, The area code stored in the area code storage means
Is the relevant area code stored in the relevant area code memory.
Access to find the access point phone number in the key
With a point correspondence table, Using the location registration information obtained from the base station as a key
Search area code conversion table to save area code
Every time the saved area code changes, the relevant area code memo
Related area codes in the
To Area code storage means in the access point correspondence table
Access point corresponding to the area code stored in
If there is no A related area code stored in the related area code memory
Search for the next candidate access point using
Access points are selected.
 Wide Area Network Access Method for Mobile Communication Terminal
Law. (2)PH that can move to multiple location registration areas
S or other VANs via other mobile communication terminals
Access services and other wide area networks, and
Network access point and the local exchange
In a mobile communication terminal that performs communication, Location registration information (hereinafter referred to as location
Information) Position data detecting means; The area code corresponding to this location information and the area code
Area code conversion table to search for related area codes, Area code storage means for storing the searched area code
When, A related area code to store the searched related area code
With Mori, The area code stored in the area code storage means is changed.
Related area code stored in the related area code memory
Rewriting means for allowing rewriting; The area code stored in the area code storage means
Is the relevant area code stored in the relevant area code memory.
Access to find the access point phone number in the key
Point correspondence table, Area code storage means in the access point correspondence table
Access point corresponding to the area code stored in
If there is no relation stored in the area code memory
Search for the next candidate of access point using area code
And means, Area code corresponding to location information for each movement in location registration area
Or select the next candidate access point of the related area code
A mobile communication terminal characterized by selectively performing communication.