JPH06245251A - Radio communication system - Google Patents

Abstract

PURPOSE:To quickly send information when mobile terminal equipment having been resident at the outside of a service area enters the service area and makes a position registration request by connecting a means storing information to the mobile terminal equipment to a network and allowing a base station to call the storage means when a position registration is made from the mobile terminal equipment. CONSTITUTION:When a communication terminal equipment 104 selects a voice mail service, a controller 102 stores the identification number of a destination mobile terminal equipment 31 and the message of a communication terminal equipment 104 to a storage device 103. When the mobile terminal equipment 31 having been resident at the outside of a service area SA10 of the base station 10 enters the service area SA10 and makes position registration to the base station 10, a communication control section 11 reports it to the controller 102 and receives a control signal representing it that the message is stored in the storage device 103 and sets up a radio channel with the mobile terminal equipment 31. Thus, the mobile terminal equipment 31 immediately recognizes the message from the communication terminal equipment 104.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system including a plurality of base stations connected to a network and having different service areas, and a plurality of mobile terminals connected to the base stations by wireless lines. In particular, the present invention relates to a wireless communication system that realizes a voice mail service, a message service, an information providing service, etc. for a plurality of mobile terminals using a storage device connected to a network or a storage device provided in a base station.

[0002]

2. Description of the Related Art Conventionally, in a wireless communication system composed of a plurality of base stations each having a different service area and a plurality of mobile terminals connected to the base stations by radio lines, each mobile terminal constantly registers its position. By registering, the service area of each mobile terminal is registered in the database of the center connected to the wired network, and when calling the mobile terminal, the mobile terminal is moved via the base station whose location is registered. It is known to be configured to call a terminal.

By the way, if the configuration is such that each mobile terminal constantly performs location registration, the load on the system increases. Therefore, only when there is a location registration request from each mobile terminal, location registration of the mobile terminal is performed, and the location is registered. A configuration is also considered in which the mobile terminal is called via the base station that has registered the location according to the registration.

However, with such a configuration, the mobile terminal does not always exist in the service area of the base station in which the location has been registered. For example, in a system in which the service areas of a plurality of base stations do not cover all the moving range of the mobile terminal, the movement of the mobile terminal causes the mobile terminal not to belong to the service area of any base station. In other words, it may be outside the service area of the base station. In this case, even if the mobile terminal is called via the base station that has registered the location, the mobile terminal cannot respond.

That is, when the mobile terminal goes out of the service area of the base station, the mobile terminal enters into the service area of one of the base stations, and unless the mobile terminal makes a location registration request, the base station can call. Can not.

[0006] Therefore, conventionally, when the mobile terminal does not respond even when the mobile terminal is called through the base station that has registered the location, the mobile terminal is within the service area of the base station for the caller. Notify you that you are not.

However, even if a mobile terminal outside the service area of the base station enters the service area of one of the base stations and makes a location registration request there, the caller cannot know this. Therefore, if it is absolutely necessary to call the mobile terminal, the caller repeatedly calls the mobile terminal. In this case, until the mobile terminal outside the service area of the base station enters the service area of one of the base stations and makes a location registration request here,
The mobile terminal cannot be called, and all the calls become invalid. This causes not only the mobile terminal not being able to make a call, but also the problem that the load on the network side is significantly increased due to an increase in invalid calls.

[0008]

As described above, in the conventional wireless communication system, the mobile terminal which is out of the service area enters into the service area of any base station, and the location registration request is made there. However, since the caller cannot know this, there is a problem that the mobile terminal cannot immediately communicate with the mobile terminal. Until entering the area and making a location registration request, the caller's call to the mobile terminal becomes an invalid call, and the increase in the invalid call causes a problem that the load on the network side also increases significantly.

Therefore, according to the present invention, even for a mobile terminal which is out of the service area, the mobile terminal enters the service area,
An object of the present invention is to provide a wireless communication system capable of promptly transmitting information when there is a location registration request.

[0010]

In order to achieve the above object, a first invention is a plurality of base stations connected to a network, each base station having a different service area, and a plurality of base stations connected to each other by a wireless line. In a wireless communication system including the mobile terminal of, a storage unit that is connected to the previous network and stores information for a specific mobile terminal of the plurality of mobile terminals, and the mobile terminal is provided in the mobile terminal. Location registration means for performing location registration with respect to a base station corresponding to the service area when entering the service area of any one of the plurality of base stations; and location registration provided from the mobile terminal. If there is,
Inquiring whether the information corresponding to the location-registered mobile terminal is stored in the storage means by calling the storage means, and the information corresponding to the location-registered mobile terminal is stored in the storage means Is a communication control means for automatically establishing a wireless line between the location-registered mobile terminal and transmitting information corresponding to the location-registered mobile terminal stored in the storage means to the mobile terminal. Is provided.

A second aspect of the present invention is a radio communication system comprising a plurality of base stations connected to a network and having different service areas, and a plurality of mobile terminals connected to the base stations by radio lines. A storage unit provided in the base station for storing information on a specific mobile terminal of the plurality of mobile terminals; and a service provided in the mobile terminal, the mobile terminal being one of the plurality of base stations. Location registration means for performing location registration with a base station corresponding to the service area when entering the area;
When the location registration is provided from the mobile terminal provided in the base station, it is checked whether or not the information corresponding to the location-registered mobile terminal is stored in the storage means of the base station. If the corresponding information has been accumulated,
A communication control means for automatically establishing a wireless link with the location-registered mobile terminal and transmitting to the mobile terminal information stored in the storage means and corresponding to the location-registered mobile terminal. It is characterized by having done.

A third aspect of the present invention is a radio communication system comprising a plurality of base stations connected to a network and having different service areas, and a plurality of mobile terminals connected to the base stations by radio lines. A first storage means connected to the network for storing predetermined information; a second storage means provided in the base station for storing predetermined information; and a mobile terminal provided in the base station. When there is a request for a predetermined service from, the required information stored in the first storage means or the required information stored in the second storage means is selected in accordance with the content of the service, and then And a communication control means for automatically establishing a wireless line with a mobile terminal that has requested the service and transmitting the selected information to the mobile terminal.

[0013]

According to the first aspect of the present invention, when the storage means for storing information for a specific mobile terminal among a plurality of mobile terminals is connected to the network and the mobile terminal registers the location, the communication control means of the base station By invoking the storage means via the network, it is inquired whether or not the information corresponding to the position-registered mobile terminal is stored in the storage means, and the information corresponding to the position-registered mobile terminal is stored in the storage means. In this case, a wireless line is automatically established between the location-registered mobile terminal and the information corresponding to the location-registered mobile terminal stored in the storage means is automatically transmitted to the mobile terminal. Further, in the second invention, the base station is provided with a storage means for storing information on a specific mobile terminal among the plurality of mobile terminals, and when the mobile terminal registers the location, the communication control means of the base station Check whether the information corresponding to the location-registered mobile terminal is stored in the storage means of the base station,
When the information corresponding to the location-registered mobile terminal is stored, a wireless line is automatically established between the location-registered mobile terminal and the location-registered movement stored in the storage means. Information corresponding to the terminal is automatically transmitted to the mobile terminal.

According to the third aspect of the invention, the first storage means for storing predetermined information is connected to the network, and the second storage means for storing predetermined information is provided in the base station so that the mobile terminal can access the predetermined information. Request for the service, the communication control means of the base station responds to the first content in response to the content of the service.
The required information stored in the storage means or the required information stored in the second storage means, and then automatically establishes a wireless line with the mobile terminal that requested the service, The selected information is transmitted to the mobile terminal.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a wireless communication system according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the overall configuration of an embodiment of a wireless communication system of the present invention. In FIG. 1, the wireless communication system of this embodiment includes a plurality of base stations 10 and 20 connected to a wired network 100 and a plurality of mobile terminals 31, 32 and 33 connected to the base stations 10 and 20 by wireless lines. It is configured to include. Here, the base station 10 includes a communication control unit 11, a storage device 12, and a control device 1.
3 is provided, and similarly, the base station 20 includes the communication control unit 2
1, a storage device 22, and a control device 23 are provided.

The wired network 100 is also connected with an information service control device 101, a control device 102, a storage device 103, and a communication terminal 104.

The base stations 10 and 20 are set with service areas SA10 and SA20, respectively, and the mobile terminal 3
1, 32, and 33 are set to be movable between service areas SA10 and SA20 of each base station 10 and 20,
Service areas SA10, SA2 of each base station 10, 20
0 does not cover all the moving areas of the mobile terminals 31, 32 and 33. That is, the mobile terminals 31, 32, 33
Are service areas SA10, SA of the base stations 10, 20
20 may belong to any of the base stations 10, 2
There may be a case where the service area does not belong to the service areas SA10 and SA20 of 0. When the mobile terminals 31, 32, 33 enter any one of the service areas SA10, SA20 of the base stations 10, 20, the mobile terminals 31, 32, 33 perform location registration with the base stations 10, 20. It is sent to the control device 102 via 100 and is registered and managed here.

For example, consider a case where a call is made from the communication terminal 104 connected to the wired line 104 to make a call with the mobile terminal 31. In this case, first, the mobile terminal 3 registered in the control device 102 is communicated with the control device 102.
If the base station in which the mobile terminal 31 exists is the base station 10, the mobile terminal 31 is called via the base station 10, and when the mobile terminal 31 responds to this, the communication terminal 104 Then, the mobile terminal 31 enters the call state.

Here, although the mobile terminal 31 has registered its location with the base station 10, the service area SA of the base station 10 is registered.
If the mobile terminal 10 has moved outside 10, the communication terminal 104 cannot call the mobile terminal 31 via the base station 10. In this case, from the base station 10 to the communication terminal 104, the mobile terminal 31 has the service area SA10 of the base station 10.
A notification that the mobile terminal 31 is not present is made, and the call to the mobile terminal 31 becomes an invalid call. In this case, the communication terminal 104 returns the mobile terminal 31 to the service area SA10 of the base station 10 or enters the service area SA20 of another base station, for example, the base station 20, and performs new location registration here. Until then, this mobile terminal 31 cannot be called.

Therefore, if the communication terminal 104 inevitably wants to talk with the mobile terminal 31, the mobile terminal 31 must be called many times, and invalid calls are generated each time, and due to the increase in invalid calls, the wired network 100 is increased. Will increase the load.

Therefore, in this embodiment, a function called a voice mail service is provided.

First, the voice mail service will be described.

When the voice mail service communication terminal 104 makes a call to call the mobile terminal 31, but the location of the mobile terminal 31 is registered, for example, when the base station 10 cannot call the mobile terminal 31, the base station 10 Receives a notification from the communication terminal 104 that the mobile terminal 31 is not within the service area SA10 of the base station 10. In this case, the communication terminal 104 selects the voicemail service. The selection of the voice mail service is performed, for example, by pressing a predetermined key (not shown) of the communication terminal 104.

The flow of signals when the voice mail service is selected will be described below with reference to FIGS. 2 and 3. When the voice mail service is selected on the communication terminal 104, as shown in FIG. 2, a control signal indicating that effect is sent from the communication terminal 104 to the control device 10 via the wired network 100.
Sent to 2. In this case, the control device 102 is the communication terminal 1
The voice message input from 04 is stored in the storage device 103 together with the identification number of the mobile terminal 31 which is the destination of this voice message.

In this state, the mobile terminal 31 existing outside the service area SA10 of the base station 10 enters the service area SA10 of the base station 10 as shown in FIG. Suppose The control signal indicating this location registration is transmitted to the mobile terminal 31 and the base station 1.
Communication control unit 1 of the base station 10 via a wireless line between
1 and the communication control unit 11 of the base station 10 receives the control signal indicating the location registration, the communication control unit 11 transmits this to the control device 102 via the wired network 100.

When the control device 102 receives the control signal indicating the position registration from the communication control unit 11 of the base station 10, the control device 102 searches the storage device 103 regarding whether or not a voice message is stored for the mobile terminal 31 that has registered the position. in this case,
Since the voice message addressed to the mobile terminal 31 is accumulated from the communication terminal 104, the control device 102 transmits a control signal indicating this to the communication control unit 11 of the base station 10.

When the communication control unit 11 of the base station 10 receives a control signal from the control device 102 indicating that the voice message addressed to the mobile terminal 31 is stored in the storage device 103, the communication control unit 11 automatically communicates with the mobile terminal 31. Establish a wireless line to.

After that, the control device 102 controls the storage device 103.
The voice message addressed to the mobile terminal 31 stored in the storage device 103 is read from the storage device 103, and the voice message is read from the wired network 100, the communication control unit 11 of the base station 10, the base station 10 and the mobile terminal 31.
It is transmitted to the mobile terminal 31 via the wireless line established between Thereby, the mobile terminal 31 can immediately know the voice message input from the communication terminal 104.

In this case, although the voice message from the storage device 103 may be immediately pronounced in the mobile terminal 31, the mobile terminal 31 is provided with a memory (not shown) for storing the voice message, and this memory is used. Alternatively, the voice message may be stored in the mobile terminal 31, and the voice message may be reproduced later by a predetermined operation on the mobile terminal 31. In this case, the mobile terminal 31 is informed that the voice message is stored in the memory, for example, by blinking a light emitting diode.
Further, the voice message stored in the memory may be not only pronounced as a voice but also displayed as character information on a display (not shown) of the mobile terminal 31.

In the above description, the wired network 100 is used.
The case where the communication terminal 104 directly connected to the user selects the voicemail service and inputs the voice message is shown. However, the above voicemail service is also provided from the mobile terminal connected to the wired network 100 via the base station. It can also be used. In this case, for example, a control signal for selecting a voicemail service is sent to the control device 102 via the communication control unit 21 of the base station 20, and a voice message input from the mobile terminal is sent to the communication control unit of the base station 20. The data is stored in the storage device 103 via 21.

As described above, in this embodiment, by selecting the voice mail service, the voice message input from any terminal can be surely and quickly transmitted to the destination terminal.

Further, in this embodiment, a message service function is provided. Next, this message service will be described.

Message Service The message service is used when the place and time of the partner terminal transmitting the message are specified. For example,
The mobile terminal 31 in the service area SA10 of the base station 10 is not in the service area of any base station at the moment, but the service area S of the base station 10 is reached after a predetermined time.
This is a case where a predetermined voice message is transmitted to the mobile terminal 32 scheduled to enter the A10.

In this case, the service area S of the base station 10
The mobile terminal 31 in A10 cannot call the mobile terminal 32 because the mobile terminal 32 is not in the service area of any base station. Therefore,
The mobile terminal 31 selects the message service. The selection of the message service is performed, for example, by pressing a predetermined key (not shown) of the mobile terminal 31.

The signal flow when this message service is selected will be described with reference to FIGS. 4 and 5. When the message service is selected by the mobile terminal 31, as shown in FIG. 4, a control signal indicating that is sent from the mobile terminal 31 to the control device 13 of the base station 10 via the wireless line. In this case, the control device 13 of the base station 10 receives the voice message input from the mobile terminal 31 via the wireless line, and stores this voice message together with the identification number of the destination mobile terminal 32 in the storage device of the base station 10. Accumulate to 12.

In this state, the mobile terminal 32 existing outside the service area SA10 of the base station 10 enters the service area SA10 of the base station 10 as shown in FIG. Suppose The control signal indicating this location registration is transmitted to the mobile terminal 32 and the base station 1.
Communication control unit 1 of the base station 10 via a wireless line between
1 and the communication control unit 11 of the base station 10 receives the control signal indicating the location registration, it notifies the control device 13 of the base station 10 of the control signal.

In response to this, the control device 13 of the base station 10 searches the storage device 12 regarding whether or not a voice message is stored with respect to the position-registered mobile terminal 32.
In this case, since voice messages addressed to the mobile terminal 32 are stored in the storage device 12, the control device 13 automatically establishes a wireless line with the mobile terminal 32 that has registered the location, and the storage device 12 stores the radio line. The stored voice message addressed to the mobile terminal 32 is read from the storage device 12, and this is transmitted to the mobile terminal 32 via a wireless line established with the mobile terminal 32. As a result, the mobile terminal 32 can immediately know the voice message input from the mobile terminal 31.

In this case, although the voice message from the storage device 12 may be immediately pronounced in the mobile terminal 32, the mobile terminal 32 is provided with a memory (not shown) for storing the voice message, and the memory is provided. The voice message may be stored in the mobile terminal 32 and the voice message may be reproduced later by a predetermined operation on the mobile terminal 32. In this case, the mobile terminal 32 is informed that the voice message is stored in the memory, for example, by blinking a light emitting diode. Further, the voice message stored in the memory may be not only pronounced as a voice but also displayed as character information on a display (not shown) of the mobile terminal 32.

In the case of this transmission service, the control is closed in the base station 10 without notifying the wired network 100 of anything, so that the load on the wired network 100 does not increase.

Further, in this embodiment, a function called an information providing service is provided. Next, this information providing service will be described.

Information Providing Service In the information providing service, when the owner of the mobile terminal applies in advance for the information menu, the time zone for receiving the information, and the place for receiving the information, the owner of the mobile terminal provides the information. This service allows you to receive desired information each time you register your location at the receiving location. As a specific information menu, traffic information, economic information, weather forecast, etc. can be considered. Further, the time zone for receiving information may be, for example, from 7 am to 8 am in the morning, and the place for receiving information may be, for example, a boarding / alighting station used for commuting. 6 and 7 show the signal flow when this information providing service is selected.
Will be described with reference to.

For example, when there is an application for an information providing service from the mobile terminal 31, the information service control device in which the end information menu related to this application, the time zone for receiving the information, and the place for receiving the information are connected to the wired network 100. It is registered in 101. In this case, the information service control device 101
As shown in FIG. 6, based on the information menu of the applicant, the time zone for receiving the information, and the place for receiving the information, the base station 20 having the service area including the place for receiving the information, for example, the service area AS20 is displayed. On the other hand, the periodically updated information is transmitted together with the applicant ID and the management information of the time zone. This periodically updated information is stored in, for example, the storage device 103 connected to the wired network 100, and the information service control device 101 is stored in the storage device 10 by the information service control device 101.
The periodically updated information accumulated in 3 is read out and transmitted to the base station 20.

When the base station 20 receives this periodically updated information, it stores it in the storage device 22 of the base station 20 and waits for location registration from the mobile terminal 31.

In this state, as shown in FIG. 7, it is assumed that the mobile terminal 31 enters the service area SA20 of the base station 20 in the applied time zone and registers its position with the base station 20. The control signal indicating the location registration is transmitted to the communication control unit 21 of the base station 20 via the wireless line. When the communication control unit 21 of the base station 20 receives the control signal, the communication control unit 21 of the base station 20 sends the control signal to the control device of the base station 20. Tell 23. In response to the control signal, the control device 13 of the base station 10 searches the storage device 22 for the information regarding the information providing service regarding the mobile terminal 31 whose position has been registered. In this case, the storage device 22 includes the mobile terminal 3
Since the information relating to the information providing service addressed to 1 is stored, the control device 23 automatically establishes a wireless line with the position-registered mobile terminal 31, and the mobile terminal stored in the storage device 22. The information related to the information providing service addressed to 32 is read from the storage device 22, and this is read by the mobile terminal 3
1 to the mobile terminal 31 via the wireless line established between the mobile terminal 31 and the mobile terminal 31. Thereby, the mobile terminal 31 can receive a desired information providing service.

In this case, the mobile terminal 31 may be configured to reproduce the received information as voice,
Further, the mobile terminal 31 may be configured to display it as character information or graphic information on a display (not shown).

[0047]

As described above, according to the present invention, when the mobile terminal is out of the predetermined service area and cannot call, the mobile terminal is connected to the storage device provided in the wired network or the predetermined base station. The storage device stores the information to be transmitted first, and automatically establishes a wireless line with the destination mobile terminal when the destination mobile terminal registers its location in the service area of any base station. Since the information to be transmitted to the other party stored in the above is configured to be transmitted to the other party's mobile terminal, there is an effect that necessary information can be promptly transmitted to the other party's mobile terminal.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an embodiment of a wireless communication system of the present invention.

FIG. 2 is a diagram showing a signal flow when a voice mail service is selected in the embodiment shown in FIG. 1, and a diagram showing an operation when a communication terminal stores a voice message in a storage device.

FIG. 3 is a diagram showing a signal flow when a voice mail service is selected in the embodiment shown in FIG. 1, showing an operation when a mobile terminal registers a location and receives a voice message stored in a storage device. FIG.

FIG. 4 is a diagram showing a signal flow when a message service is selected in the embodiment shown in FIG. 1, showing an operation when a mobile terminal stores a voice message in a storage device of a base station.

5 is a diagram showing a signal flow when the message service in the embodiment shown in FIG. 1 is selected, when a mobile terminal registers a location and receives a voice message stored in a storage device of a base station. The figure which shows operation.

FIG. 6 is a diagram showing a signal flow when an information providing service is selected in the embodiment shown in FIG. 1, in which regularly updated information stored in a storage device under control of an information service control device is stored in a base station; The figure which shows the operation | movement transmitted to a station.

7 is a diagram showing a signal flow when an information providing service is selected in the embodiment shown in FIG. 1, and relates to an information providing service stored by a mobile terminal in a storage device of a base station. The figure which shows the operation | movement at the time of receiving information.

[Explanation of symbols]

 10, 20 Base station 11, 21 Communication control unit 12, 22 Storage device 13, 23 Control device 31, 32, 33 Mobile terminal 100 Wired network 101 Information service control device 102 Control device 103 Storage device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiko Minami Hichi, Hino City, Tokyo 1-chome, 3-chome, Asahigaoka Toshiba Corporation Hino factory inside

Claims (3)

[Claims] 1. A wireless communication system comprising: a plurality of base stations connected to a network, each base station having a different service area; and a plurality of mobile terminals connected to the base station via a wireless line. A storage unit that stores information for a specific mobile terminal among the plurality of mobile terminals, and the mobile terminal is provided in the mobile terminal and enters the service area of any one of the plurality of base stations, Location registration means for performing location registration with respect to a base station corresponding to the service area; and when the location registration is provided by the mobile terminal and the mobile terminal calls the storage means, the location registered movement is performed. Queries whether the information corresponding to the terminal is accumulated in the accumulating means, and accumulates the information corresponding to the location-registered mobile terminal in the accumulating means. If it is, automatically establishes a radio channel between a mobile terminal which has the location registration,
A wireless communication system comprising: a communication control unit that transmits to the mobile terminal the information corresponding to the location-registered mobile terminal stored in the storage unit. 2. A wireless communication system comprising: a plurality of base stations connected to a network and having different service areas; and a plurality of mobile terminals connected to the base station via a wireless line. Storage means for storing information on a specific mobile terminal among the plurality of mobile terminals, and when the mobile terminal enters the service area of any of the plurality of base stations provided in the mobile terminal , Location registration means for performing location registration with respect to a base station corresponding to the service area, and when the location registration is provided from the mobile terminal, the location registration is performed in the storage means of the base station. Check if the information corresponding to the mobile terminal is stored, and if the information corresponding to the location-registered mobile terminal is stored,
A communication control means for automatically establishing a wireless link with the location-registered mobile terminal and transmitting to the mobile terminal information stored in the storage means and corresponding to the location-registered mobile terminal. A wireless communication system characterized by the above. 3. A wireless communication system comprising: a plurality of base stations connected to a network, each base station having a different service area; and a plurality of mobile terminals connected to the base station via a wireless line. A first storage unit for storing predetermined information; a second storage unit provided in the base station for storing predetermined information; and a second service unit provided in the base station for requesting a predetermined service from the mobile terminal. Then, the required information stored in the first storage means or the required information stored in the second storage means is selected according to the content of the service, and then the service is requested. A wireless communication system comprising: a communication control means for automatically establishing a wireless line with a mobile terminal and transmitting the selected information to the mobile terminal.