JPH0537462A - Mobile communication terminal - Google Patents

Abstract

PURPOSE:To easily obtain a current position or a peripheral map by the user of the mobile equipment by providing a map data storing means, map data retrieving means to retrieve map data based on identification information from a base station and map display part at the mobile equipment. CONSTITUTION:When the user of a mobile equipment 20 operates a key input part 29 and inputs the instruction of displaying the map of a peripheral area, a link request is transmitted to the base station. When a link ground is returned within fixed time, a microcomputer 27 extracts the identification information (link reference ID) of the base station. The map data retrieving means of a map data generating circuit 22 retrieves the correspondent map data from the map data in the map data storing means based on the link reference ID at such a time. When the map data exist, the map data are transmitted to a map display part 23, and the map is displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication terminal such as a so-called mobile phone of a mobile communication system.

[0002]

2. Description of the Related Art Conventionally, in a mobile communication system, for example, a mobile communication terminal such as a mobile phone accesses a plurality of base stations each having individual identification information and responds to the access. There is a communication system in which the mobile communication terminal communicates via the base station using the identification information from the base station. Furthermore, in this mobile communication system, LID (Link
So-called CT-2 (Second gene) using Reference ID
There is a standard for ration cordless telephon. Here, the specifications of this CT-2 standard are so-called ETSI (Europea).
nTlecommunication Standard institute's CAI (Commo
n air interface standard).

[0003] For example, the so-called telepoint in CT-2 is about 100 m around the base unit of a cordless telephone for public use, that is, the base station (CFP, base station).
Within the range, a person who has a cordless telephone slave unit, that is, a mobile communication terminal (CPP, mobile unit), which meets the CAI specifications and is registered with a domestic line operator, connects to a so-called PSTN line via the base station. It is a system that can.

Here, the LID (Link Reference ID)
Is a number individually indicating the base station (CFP). In addition, in the LID, a link reference (Link Refe
rence) and BID (Base ID), which are numbers uniquely assigned to the respective base stations of the above-mentioned telepoint.

The mobile station (CPP) issues a link request when performing a telepoint access. This link request includes a PID (Personal ID) which is a unique number of the mobile device.
The PID is the HID (Han of the CT-2 standard).
dset Identification Code) and MID (ManufacturerIde
ntification Code).

When the base station (CFP) receives the link request, it returns a link grant. The link grant includes the LID, and the LID in this case is the above-mentioned link reference that is a number indicating each base station (CFP).

[0007]

The above-mentioned mobile device is usually
A person who uses the mobile device individually carries the mobile device when going out.

By the way, this user may want to know where he is when he goes out, for example. In such a case, the current position is usually known by looking at a map or by asking a neighbor.

There are also cases where the user looks for a map or works for a person to search for a destination to be reached from the current position, for example.

However, as described above, it is inconvenient to carry a map around at all times, and in some cases, it may not be possible for a person to hear the map.

As a positioning system for knowing the current position, there are, for example, so-called Loran C, Omega, NNSS, GPS and other dedicated positioning systems. However, these devices require a dedicated receiver to know the location, and therefore cost
It requires special space and is usually not suitable for people to carry around.

[0012] Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and a user carrying a mobile communication terminal can easily carry out without carrying other maps or devices specially. It is an object of the present invention to provide a mobile communication terminal to which a map display function capable of obtaining a current position and a map of the surrounding area is added.

[0013]

The mobile communication terminal of the present invention is proposed to achieve the above-mentioned object, and accesses a plurality of base stations each having individual identification information, In a mobile communication terminal that receives identification information from a base station that responds to this access and uses this identification information to perform communication via the base station, a map data storage unit that stores map data and access to the above Map data search means for searching the map data in the map data storage means based on the identification information from the responding base station, and a map for displaying a map based on the map data read from the map data storage means. And a display means.

Further, the mobile communication terminal of the present invention accesses a plurality of base stations each having individual identification information, receives the identification information from the base station responding to this access, and receives this identification information. A mobile communication terminal capable of receiving map data corresponding to each of the plurality of base stations while performing communication via the base station using the identification information from the base station responding to the access. It has a map display means for receiving corresponding map data and displaying a map based on the received map data.

At this time, for example, a map in each coverage area is stored for each of the base stations, and the base station responding to the access from the mobile communication terminal maps in accordance with the identification information of the base station. By sending data to the mobile communication terminal, the mobile communication terminal can obtain map data. The map data can also be stored in a fixed station (for example, a so-called service center) connected to each base station, and in this case, the identification information of the base station that responded to the access of the mobile communication terminal is used. The fixed station searches the corresponding map data and sends the searched map data to the mobile communication terminal via the base station.

[0016]

According to the present invention, map data is stored in the mobile communication terminal itself or in, for example, a base station or a fixed station, and from the stored map data, for example, the base accessed by the mobile communication terminal. Map data around the base station is searched according to the identification information of the station. By displaying the retrieved map data on the map display means provided in the mobile communication terminal, the user can obtain the map information of his / her current position and the surrounding area.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The mobile communication terminal of the present invention is
As in the first embodiment shown in FIGS. 1 and 2, a plurality of base stations 10 each having individual identification information (link reference ID) (for example, base stations 10 _n , 10 _m shown in FIG. 2).
Base station 1 that has accessed and responded to this access
The link reference ID from 0 is received and the link reference ID is used, and the base station 10 (see FIG.
In this example, the mobile device 20 that communicates via the base station 10 _n )
Is.

The mobile unit 20 corresponds to a so-called cordless telephone slave unit, and the base station 10 corresponds to a public master unit of the cordless telephone. In addition, the first embodiment is based on the above-mentioned CT-2 (Second generation cordl).
This is an example of applying the ess telephon) standard. Therefore, in the first embodiment, the so-called telepoint function in CT-2 can be used to make a call to the subscriber such as the PSTN. That is, when a person having a cordless telephone slave unit, that is, a mobile unit (CPP) 20 makes a telepoint call according to the protocol defined in the ETSI, the base station (telepoint CFP) 10 that receives the call makes the above identification. The information (link reference ID) is returned to the mobile device (CPP) 20. Needless to say, the present invention is not limited to the CT-2 standard, as long as each of the plurality of base stations has individual identification information and communication is performed using this identification information. It may be something else.

Further, the mobile unit 20 of the first embodiment is shown in FIG.
As shown in, the map data storage means (map recording memory) for storing the map data and the map data based on the link reference ID from the base station 10 (for example, the base station 10 _{n in} FIG. 2) responding to the access. A map data generating circuit 22 comprising a map data searching means (map searching portion) for searching map data in the storing means, and a map display based on the map data read from the map data storing means of the map data generating circuit 22. And a map display section 23 for performing.

The map data storage means is, for example, a map recording memory for storing map data of each surrounding area where the plurality of base stations 10 are installed. The surrounding area may be, for example, an area within a radius of about 100 m (cover area CE) around the base unit of the public cordless telephone, that is, the base station (CFP) 10. That is, in this map data storage means,
For example, the base station 10 ₁ of the link reference ID (LI
Map data corresponding to D ₁ ) and map data corresponding to the link reference ID (LID ₂ ) of the base station 10 ₂ .
..., a plurality of map data corresponding to the respective link reference IDs (LID _n ) of the plurality of base stations 10 _n are stored. Note that it is possible to store map data in a wider range than the above-mentioned cover area CE for each link reference ID of each base station 10 in this map data storage means, and the map data can be designated by the map data. The ranges may overlap. Further, the map data storage means is specifically constituted by a ROM, a so-called memory card, or the like. For example, if the memory card is used as the map data storage means, a map of a wide area can be displayed by replacing the memory card.

As the map data display means, for example, a dot matrix LCD (liquid crystal display) capable of displaying graphics is used.

In FIG. 1, the structure surrounded by a dotted line in the drawing shows the structure of a normal cordless telephone (mobile unit: CPP) 21 and a transmitting / receiving microphone 30.
And the speaker 31, the receiving circuit 25 and the transmitting circuit 26
And a key input unit 29 for dialing or data input,
A microcomputer 27 that controls each part and controls the map data generation circuit 22 and the map display part 23, and a program R for the microcomputer 27.
It comprises an OM 28 and an antenna 24 for transmitting and receiving signals.

The mobile unit 20 of the first embodiment shown in FIG.
The flowchart of the map search display process using is shown.

That is, in this flowchart,
In step S1, the user of the mobile device (CPP) 20 operates, for example, the key input unit 29 on the mobile device (child device: CPP) 20 to display a map of the surrounding area where the user is located. Input to order.

As a result, in step S2, a link request is transmitted from the mobile station 20 to the base station (telepoint CFP) 10. At this time, in the mobile device 20, it is determined whether or not the link grant is returned from the base station (CFP) 10 within a fixed time (step S3). In step S3, if the link grant is not returned within the fixed time (No), the user is informed that the current position is outside the cover area CE (outside the service area) (for example, Display). On the other hand, in step S3, if the link grant is returned within the fixed time (Yes), the process proceeds to step S4.

In step S4, the base station (CFP)
From the link grant returned from 10, the microcomputer 27 extracts the identification information (link reference ID) of the base station 10 concerned.

At this time, the map data retrieving means of the map data generating circuit 22 retrieves corresponding map data from the map data in the map data storing means on the basis of the extracted link reference ID. (Step S5), and in step S6, it is determined whether the map data corresponding to the extracted link reference ID exists in the map data storage means. If it is determined in step S6 that the map data corresponding to the link reference ID does not exist in the map data storage means (No), the process proceeds to step S9 to notify the user that the map data is not stored. . On the other hand, if the map data exists (Yes), the process proceeds to step S8.

In step S8, the map data read out from the map data storage means based on the search by the map data search means is sent to the map display section 23,
A map corresponding to the map data is displayed on the map display unit 23.

From the above, according to the mobile device 20 of the first embodiment, a person who uses the mobile device 20 is particularly required to know where he is when he goes out. This makes it possible to easily obtain the current position and a map of the surrounding area without having to carry around a map or a device.

The mobile communication terminal of the present invention can also be configured as in the second embodiment described below. The mobile communication terminal of the second embodiment is designed not to store the map data in the terminal itself but to obtain the map data from the outside, and display the map data obtained from the outside. I am trying.

That is, the mobile unit 40 of the second embodiment shown in FIG. 4 accesses a plurality of base stations each having an individual link reference ID, and the link reference ID from the base station responding to this access. Is a mobile communication terminal capable of receiving the map data corresponding to each of the plurality of base stations while performing communication via the base station using the link reference ID,
The map display unit 23 is a map display unit that receives map data corresponding to the link reference ID from the base station responding to the access and displays a map based on the received map data.

Here, the map data received by the mobile communication terminal of the second embodiment is fixed as shown in FIG. 5 and is connected to each base station 10 (10 _n ) via a so-called PSTN network. It is stored in the station (for example, a so-called service center) 60, and a plurality of types are provided corresponding to the respective link reference IDs of the plurality of base stations. Therefore, in the case of the second embodiment, the base station 10 that responds to the access of the mobile unit 40.
Of the plurality of map data stored in the fixed station 60, and sends the searched map data to the mobile station 40 via the base station 10. ing.

In FIGS. 4 and 5, the same components as those in FIGS. 1 and 2 described above are designated by the same reference numerals, and the description thereof will be omitted.

Here, the fixed station 60 functions as a database, and has a structure as shown in FIG. 6, for example. That is, in FIG. 6, the fixed station 60
Is composed of, for example, a magnetic disk or a large-capacity memory, and each link reference I of each of the plurality of base stations 10 _n.
Corresponding to the link reference ID from the base station 10 that responds to the access of the mobile device 40 from the map data storage means 80 and the map data storage means 80 that stores a plurality of map data corresponding to D The fixed station 60 comprises a computer 81 for retrieving map data to be stored, a ROM 82 for storing a program of the computer 81, a communication interface 83 for communication, and a so-called NCU (network control unit) 84. Each base station 1 through the network
0 (10 _n ) is connected.

FIG. 7 shows the mobile unit 40 of the second embodiment.
8 shows a flowchart of map search display processing by the fixed station 60. In addition, in the flowchart,
The same steps as those in the flowchart of FIG. 11 are designated by the same reference numerals, and detailed description thereof will be omitted.

That is, in the flow chart of FIG. 7, steps S1 to S4 and S7 are the same as those in FIG. 3, and the link grant returned from the base station (CFP) 10 in step S4 causes the base station 10 When the identification information (link reference ID) is extracted, the mobile device 40 dials the dial number of the fixed station 60 with respect to the base station 10 (step S15), and proceeds to step S16.

In step S16, the fixed station 60 is
It is judged whether or not the line is connected to. The fixed station 60
If the line is not connected to (No), step S2
Go to 2. In step S22, the call is made again after a certain time, and then the process returns to step S2. On the other hand, when the line is connected to the fixed station 60 in step S16 (Yes), the process proceeds to step S18.

In step S18, the fixed station 60 is
To the base station 10 that responded to the access of the mobile device 40
Send a link reference ID of and request a search for map data. As a result, the fixed station 60 uses the link reference ID to search the map data in the map data storage means 80 for the corresponding map data.

After the map data is searched in step S18, the map data sent from the fixed station 60 is received by the mobile unit 40 in step S19. When the mobile device 40 receives the map data, it requests the base station 10 to disconnect the line with the fixed station 60 (step S20).

Thereafter, the map display section 23 displays a map based on the sent map data (step S21).

Further, FIG. 8 shows a flowchart of the map search processing in the fixed station 60.

In the flow chart of FIG. 8, if a call is made from the mobile station 40 in step S31 and the link reference ID of the base station 10 from the mobile station 40 is received in step S32, the fixed station 6 concerned.
In step S33, 0 retrieves the map data corresponding to the link reference ID of the base station 10 from the map data storage means 80.

When the map data is searched in step S33, the map data is returned to the mobile unit 40 in step S34. At this time, the fixed station 60 records, for example, that the map data search service has been provided to the mobile device 40 (step S35).
After that, the line is disconnected in step S36, and a call from another mobile device or the like is waited in step S37.

As described above, according to the mobile unit 40 of the second embodiment, the mobile unit 4 is the same as that of the first embodiment.
For example, when a person who uses 0 wants to know where he / she is when he goes out, he / she can easily obtain the current position and the surrounding map without carrying a special map or device. . Further, since the map data is stored in the fixed station 60 instead of being stored in the mobile station as in the first embodiment, the configuration of the mobile station 40 is simplified and downsized, and the cost is reduced. It is also advantageous in terms. Further, in the case of the mobile device 20 of the first embodiment, for example, when a base station is newly installed, there is no map data corresponding to the identification information of the newly installed base station. Map data needs to be updated,
The map data also needs to be updated when the topography (map) is changed due to construction work or construction of a new building. In this case, since the mobile device 20 of the first embodiment is possessed by a general user, it is difficult to update the map data quickly, whereas according to the second embodiment, the fixed station 60 is Since it is provided centrally at one place or a small number of places, it is generally easy to update the map data, etc., and it becomes possible to quickly respond to new base station construction, topographic changes, and the like.

Further, in the present invention, as the third embodiment, instead of storing the map data in the fixed station 60 as in the second embodiment, for example, the map data is stored for each of a plurality of base stations. It is also possible to do so.

That is, in the third embodiment, the mobile communication terminal has a plurality of base stations each having individual identification information (link reference ID) and map data storing means for storing map data. Access this link reference ID from the base station that responded to this access, and receive this link reference ID
A mobile device that communicates via the base station by using, and receives and receives the map data read and transmitted from the map data storage means provided in the base station that responded to the access. It has a map display means (map display section) for displaying a map based on the map data.

Here, the map data stored in each base station in the third embodiment can be map data within the service area of the base station.
Therefore, in this case, the base station transmits the map data stored in the base station to the mobile device in response to the map data request signal from the mobile device.

In addition, as a fourth embodiment, the map data stored in each base station is not limited to the map data within the service area of the base station as described above. It is also possible to include the service areas of a plurality of base stations, and each base station stores a plurality of map data corresponding to the link reference IDs of all the base stations as in the second embodiment. Is also possible.

In this case, each base station has map data generating means including map data storing means for storing a plurality of map data and map data searching means for searching map data in the map data storing means. To be done. Therefore, the base station according to the fourth embodiment retrieves the map data stored in the base station according to the map data request signal from the mobile station, and the mobile station according to the fourth embodiment. Receives the map data from the map data generating means of the base station in response to the access from the mobile device, and displays the map on the map displaying means based on the received map data.

As described above, according to the mobile units of the third and fourth embodiments, as in the first embodiment, a person who uses the mobile unit can, for example, whereabouts when he / she goes out. When it is desired to know whether there is any special map or device, it is possible to easily obtain the current position and the surrounding map. Further, by storing the map data in each base station, the configuration of the mobile device is simplified and downsized, and it is advantageous in terms of cost.
In addition, for example, when a base station is newly installed, new map data is stored in the newly installed base station, so that the mobile device can always obtain new map data. Furthermore, even if the terrain (map) is changed due to construction or the construction of a new building, it is generally easy to update the map data at each base station. You will be able to respond.

[0051]

As described above, in the mobile communication terminal of the present invention, the map data storing means for storing the map data and the map data searching means for searching the map data based on the identification information from the base station. By including a map display means for displaying a map based on the map data,
A person who uses a mobile communication terminal can easily obtain the current position and a map of the surrounding area, for example, when he / she wants to know where he / she is when he / she goes out, without having to carry around a map or a device. Like

The mobile communication terminal of the present invention can receive the map data corresponding to each of the plurality of base stations, and receives the map data corresponding to the identification information from the base station responding to the access, By having the map display means for displaying the map based on the received map data, the user of the mobile communication terminal can easily obtain the current position and the surrounding map, as described above. It is possible to simplify the configuration, reduce the size, and reduce the cost. In addition, it becomes possible to quickly respond to new base stations, topographic changes, etc., and display an accurate map.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a mobile communication terminal according to a first embodiment.

FIG. 2 is a diagram for explaining a state of communication between a mobile communication terminal and a base station according to the first embodiment.

FIG. 3 is a flowchart of a map search display process in the first embodiment.

FIG. 4 is a block diagram showing a schematic configuration of a mobile communication terminal according to a second embodiment.

FIG. 5 is a diagram for explaining the manner of communication between a mobile communication terminal of the second embodiment, a base station and a fixed station.

FIG. 6 is a block diagram showing a configuration of a fixed station according to a second embodiment.

FIG. 7 is a flowchart of map search display processing in the second embodiment.

FIG. 8 is a flowchart of map search processing in a fixed station according to a second embodiment.

[Explanation of symbols]

10 ... Base station 20,40 ... Mobile 22 ... ・ Map data generation circuit 23 ... ・ Map display 24 ・ ・ ・ ・ ・ ・ Antenna 25 ・ ・ ・ ・ ・ ・ Transmission circuit 26 .... Reception circuit 27 ... Microcomputer 28 ... ROM 29 ... Key input section 30 ... Mike 31 ... Speaker 60 ・ ・ Fixed station

Claims (2)

[Claims] 1. Accessing a plurality of base stations each having individual identification information, receiving identification information from the base station responding to this access, and using this identification information,
In a mobile communication terminal that communicates via the base station, map data storage means for storing map data, and map data in the map data storage means based on the identification information from the base station responding to the access. A mobile communication terminal, comprising: map data searching means for searching and map display means for displaying a map based on the map data read from the map data storing means. 2. Accessing a plurality of base stations each having individual identification information, receiving identification information from the base station responding to the access, and communicating via the base station using the identification information. A mobile communication terminal capable of receiving map data corresponding to each of the plurality of base stations, and receiving map data corresponding to the identification information from the base station responding to the access, A mobile communication terminal comprising map display means for displaying a map based on the received map data.