JPH043534A - Mobile radio terminal equipment - Google Patents

Abstract

PURPOSE:To attain position registration in response to an opposite base station by informing it to a carrier of a mobile radio terminal equipment when the movement to a zone different from a radio base station resident at present is detected, displaying the radio base station at a moved zone and allowing the terminal equipment to register its position to the radio base station automatically. CONSTITUTION:When a mobile radio terminal equipment 108 moves from a zone of a small radio base station 105 to a zone of a small radio base station 106, the electric field strength of a control channel of the received small radio base station 105 is decreased. When a control section 201 of the mobile radio terminal equipment 108 detects the decrease in the strength, the control section 201 controls a transmission/ reception section 202 to seek a control channel with a high electric field strength thereby acquiring the control channel of the small radio base station 106. The control section 201 recognizes the necessity of position registration because the number of the small radio base station 106 differs from the umber of the small radio base station recorded in a memory 206 of the mobile radio terminal equipment 108. When the control section 201 recognizes it that the zone is a zone to be subject to automatic position registration, the position is registered automatically. Thus, efficient position registration is implemented.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a service area consisting of a plurality of radio base station zones of different sizes, and calls are possible within the small radio base station zone; Within the radio base station zone, it concerns the location registration of mobile radio terminals where only paging, such as paging, or one-way data transmission is possible.

[Prior Art] As a conventional mobile communication system that performs automatic location registration, there is a car telephone system. In the car telephone system, the service area is covered by many wireless zones, and the multiple wireless zones constitute one location registration area. When a mobile radio terminal moves into this location registration area, it learns that the radio waves from the new radio base station have become stronger and automatically performs location registration operations.

In this case, the size of each wireless base station zone is 3 to 5 kilometers in radius, and the size of the location registration area is several tens of kilometers in radius, so even if the mobile wireless terminal moves at high speed within the zone, location registration will not be possible. It doesn't happen very often. In addition, the location registration area is covered by wireless base stations, and the area where automatic location registration can be performed is sufficiently wide, so there will be no inconvenience in terms of service.

[Problem to be solved by the invention] However, assuming that in the future each individual will own a mobile radio terminal as a mobile phone, the number of such terminals will be enormous, so it is difficult to effectively use the limited radio frequency. Therefore, the radius of the wireless base station zone is extremely small, 50 to 100 meters, and the location registration area is also considered to have a radius of several kilometers.

When a mobile radio terminal moves at high speed in this location registration area, location registration occurs frequently, and the effective use of radio frequencies is impaired by location registration traffic. Also radius 5
It is impossible to cover the entire area where individuals move with a wireless zone of 0-100 meters.

Therefore, in places where there is no such a small wireless zone, a method has been considered in which a wireless base station with a large zone such as a pager is used to cover the area and allow only calls to be made.

Naturally, radio waves from mobile wireless terminals cannot reach such large areas, so automatic location registration is not possible. Therefore, it is necessary to register the location using a regular telephone, but it is also necessary to inform the user that automatic location registration is not possible in the area.

[Means for Solving the Problems] The present invention has been made to solve the above-mentioned conventional problems. It is an object of the present invention to provide a mobile radio terminal that allows a user to recognize a change in the number of base stations and to perform location registration according to the partner base station.

That is, the present invention provides a mobile radio terminal used in a mobile communication system in which a service area is configured of at least one small radio base station zone and at least one large radio base station zone, A function that receives radio waves from a large wireless base station and uses the received information to detect when you have moved to a zone of a wireless base station different from the wireless base station you are currently in, and When it is detected that you have moved to a different wireless base station zone,
In addition to notifying the user of the mobile radio terminal of this, there is also a means for displaying whether the radio base station to which the mobile radio terminal is moving is a large radio base station or a small radio base station; This is a mobile radio terminal equipped with a button for automatically starting the operation of performing location registration.

[Function] In the present invention, in a place where there is a risk of frequent location registration, a message indicating that location registration is necessary is displayed on the terminal, and the user is allowed to decide whether or not to perform location registration. Additionally, in areas where automatic location registration is not possible, the terminal displays a location registration method suitable for wireless conditions, such as displaying on the terminal that manual location registration is required from a regular telephone or the like.

By adopting this method, it is possible to eliminate invalid location registration traffic even in cases where the number of subscribers will be extremely large, such as in the case of future mobile phones, and where individuals move around with location registration wireless terminals. It is. Furthermore, even if you are in an area where there are no small wireless base stations, you can manually register your location from a regular telephone, expanding your service area.

[Example] FIG. 1 is a wireless zone configuration diagram for explaining the present invention in detail, in which 101 is a telephone station, 102 is a wireless control station, and 103 is a wireless zone configuration diagram for explaining the present invention in detail.
is a large wireless base station, 104 to 107 are small wireless base stations, 10
8 to 109 are mobile radio terminals, 110 is a telephone, and 112 is a location registration memory. FIG. 2 is a block diagram of the mobile radio terminal of the present invention, in which 201 is a control unit;
202 is a transmitting and receiving unit, 203 is a display unit, 204 is a sounding unit,
205 represents a sound connection section, 206 represents a memory, and 207 represents a location registration button.

Normally, multiple small wireless base station zones as shown by numbers 104 to 109 in Figure 1 are collected as a location registration area. Assume that is the location registration area. That is, a mobile radio terminal can register its location with the radio control station in units of small radio base stations such as 104 and 105, and in units of large radio base stations 103.

However, unless the mobile radio terminal is within a small radio base station zone, the mobile radio terminal cannot register its location by radio because the transmission power of radio waves is weak. Therefore, in a zone where there are only large wireless base stations, a general telephone is connected to the wireless control station and location registration is performed by wire.

The radio control station receives calls from the mobile radio terminal from the radio base station when the mobile radio terminal is within the small radio base station zone, and receives calls from the large radio base station when the mobile radio terminal is registered in the large radio base station zone. Only calls and data transmission are performed from the terminal, and no two-way communication is performed.

Small wireless base stations 104 to 107 and large wireless base station 10
3 periodically sends out a signal corresponding to its own base station number on a radio control channel that is always regulated.

If the mobile radio terminal 108 is within the zone of the small radio base station 105 and is performing location registration, the radio control station 102
The number of the radio base station 108 is recorded in the location registration memory of the mobile radio terminal 108. The number of the small wireless base station 108 is also recorded in the memory 206 of the mobile wireless terminal whose configuration is shown in FIG.

When the mobile radio terminal 108 moves from the zone of the small radio base station 105 to the zone of the small radio base station 106, the electric field strength of the control channel of the small radio base station 105 that has been receiving the signal decreases. When the control unit 201 of the mobile radio terminal 108 detects the decrease, it controls the transmitting/receiving unit 202, starts searching for a control channel with high field strength, and supplements the control channel of the small radio base station 106.

The number of the small wireless base station 106 is transmitted on this control channel. Therefore, the control unit 201
Since the number is different from the number of the small radio base station recorded in the memory 206 of the mobile radio terminal 108, it can be seen that location registration is required.

When the control unit 201 learns that this zone is a zone for automatic location registration, it automatically performs location registration.

Possible methods for determining whether a zone is one in which automatic location registration is performed include including the information in a signal sent from a wireless base station, or storing the information in the memory 206 of the mobile wireless terminal 108.

If it is determined that this zone is a zone in which the user is required to make a decision regarding location registration, the control unit 201 causes the sound unit 20 to
4 generates a sound and displays on the display section 203 that the location has been moved to a new location registration zone.

An example of the display content may be "You have entered a new zone. If necessary, please press the location registration button." The owner of the mobile radio terminal 108 who sees this display,
If the user wishes to register the location in the zone of the base station 106, the user presses the location registration button 207.

When the location registration button 207 is pressed, the control unit 201 transmits a location registration signal from the transmitting/receiving unit 202 to the small wireless base station 106 . This location registration signal is composed of a control code indicating location registration, a number of the mobile radio terminal 108, and, if necessary, a number of the small radio base station 106. The small wireless base station 106 that received this location registration signal transfers the signal to the wireless control station 102.

The radio control station 102 writes the number of the small radio base station 107 instead of the previous number of the small radio base station 105 in the location of the mobile radio terminal 108 in its own location registration memory. The mobile radio terminal 108 also writes the number of the small radio base station 106 in the memo IJ 206, and the location registration is completed.

On the other hand, the owner of the mobile radio terminal 108 presses the location registration button 2.
If 07 is not pressed, no location registration operation is performed, and the number of the previous small radio base station 105 remains in the mobile radio terminal 108 of the location registration memory of the wireless control station 102. .

Next, when the mobile radio terminal 108 passes through the small radio base station 106 and enters the zone of the small radio base station 107, in the same way as it moved from the small radio base station 105 to the small radio base station 106,
This time, the electric field strength of the control channel of the small wireless base station 106 that was receiving the signal decreases.

As before, the mobile radio terminal 108 is connected to the small radio base station 107.
The control channel is supplemented, the sound section 204 generates a sound, and the necessity of location registration is displayed on the display section 203. Location registration wireless terminal holder presses location registration button 20
If you press 7, the location will be registered to the small wireless base station 107, and if you do not press the location registration button, the location will remain registered to the small wireless base station 105 as before.

Next, a case where the mobile terminal 108 moves from the small radio base station zone 107 to a zone containing only the large radio base station 103, that is, the case where the mobile terminal 108 moves to the position where the mobile radio terminal 109 is located in FIG. 1 will be explained.

When the mobile radio terminal 108 moves away from the zone of the small radio base station 107, the electric field strength of the control channel of the small radio base station 107 that it has been receiving decreases, so it cannot receive the radio waves of the control channel of other small radio base stations. Scan and look for channels with strong electric field strength.

However, since the radio waves of any small radio base station cannot reach the location where the mobile radio terminal 109 is located, it is not possible to capture the control channel of a small radio base station with a strong electric field strength. When the control channel of the small radio base station cannot be acquired, the mobile radio terminal 108 starts receiving the control channel of the large radio base station.

Naturally, since the control channel of the large wireless base station 102 is strongly received, that channel is captured.

Since the number of the large wireless base station 102 is transmitted on this control channel, the control unit 201 controls the large wireless base station 102.
Since the number of the mobile radio terminal 108 is different from the number of the small radio base station 107 recorded in the memory 206 of the mobile radio terminal 108, the sound unit 204 generates a sound and the display unit 203 indicates that the mobile radio terminal 108 has moved to a new location registration zone. control so that it is displayed. However, in this zone, radio waves transmitted by mobile radio terminals do not reach the base station, so wireless location registration is not possible. Therefore, the displayed content may be, for example, "You have entered a reception-only zone. Please register your location from a regular telephone."

If the owner of the mobile radio terminal 108 sees this display and wishes to perform location registration in the zone of the base station 102, he or she goes to a nearby telephone 110 and if the telephone is a push-button telephone. In this case, place the sound connecting section 205 on the transmitter of the telephone and press the connection button 208. Then, the control section 201 reads out the connection number to the radio control station from the memory 206, and sends it out from the sound connection section 205 as a push button signal. If the telephone is a dial-pulse telephone, the holder of the mobile radio terminal 108 dials the connection number to the radio control.

This number may be displayed on the mobile radio terminal as a label or the like, and it can also be easily configured to be displayed on the display unit 203 when the connection button 208 is pressed.

Regardless of the method, when the connection number to the radio control station is sent, the telephone station 101 connects the line to the radio control station. When the reception tone or reception voice is returned from the radio control station, the user places the sound connection unit 205 on the transmitter of the telephone 110 and presses the location registration button 207. Then, a location registration signal is sent to the radio control station by the push button signal.

The location registration signal includes a control code indicating location registration;
It consists of the mobile radio terminal 108 number and the large radio base station 106 number. The radio control station 102 that has received this location registration signal transmits the information to the mobile radio terminal 10 in its own location registration memory.
Write the number of the large radio base station 103 in place of the number of the small radio base station 107 in place 8. The mobile radio terminal 108 also writes the number of the large radio base station 103 in the memory 206, and the location registration is completed.

The number of the large radio base station 103 may be written in the memory 206 of the mobile radio terminal 108 by the owner of the mobile radio terminal through a telephone line, but there is a way to do this more reliably and accurately. , the radio control station sends a signal indicating that location registration has been performed to the location registration terminal 108 via the large radio base station 106, and the mobile radio terminal 10
It is also possible to perform this by receiving the signal at 8.

On the other hand, if the owner of the mobile radio terminal 108 does not perform a location registration operation from the telephone, no location registration operation is performed, and the previous mobile radio terminal 108 is stored in the location registration memory of the radio control station 102. The number of the small wireless base station will remain.

FIG. 3 shows the control flow of the mobile radio terminal in this location registration operation.

In Figure 3, when receiving the control channel of a large wireless base station,
The control channel of the large wireless base station is received until the field strength decreases, but if a wireless zone configuration is adopted in which the large wireless base station and the small wireless base station overlap, During reception of a control channel of a small radio base station, by occasionally searching for a control channel of a small radio base station with a strong electric field strength, it becomes possible to perform a location registration operation giving priority to small radio base stations.

In addition, even when receiving the control channel of a small wireless base station, the field strength at the large wireless base station is occasionally detected and displayed on the mobile wireless terminal, so that the wireless terminal owner can receive information about the large wireless base station. It is also possible to select whether to register the location using a small wireless base station or a small wireless base station.

If the electric field is strong in both the M control channel of the small wireless base station and the control channel of the large wireless base station, the owner of the location registration wireless terminal presses the button to select location registration with the large wireless base station. In this case, manual location registration from the telephone is not required, and the same control as the location registration at the small wireless base station explained above using the control channel of the small wireless base station,
This can be easily achieved by transmitting the number of a large wireless base station.

[Effects of the Invention] As explained above, according to the present invention, when location registration is required on a mobile radio terminal, this is displayed and the terminal owner is made to select location registration, so that it will not be realized in the future. Even when the location registration zone is extremely small and the time spent in the location registration zone is short, such as in the case of a mobile phone, which is expected to have a large number of users, it is possible to perform efficient location registration without performing invalid location registration. In addition, if large wireless base station zones and small wireless base station zones coexist, a message indicating that location registration is required from a regular telephone is displayed on the mobile wireless terminal, and as explained in the example, The dialed digits required for location registration from a telephone can be stored in the mobile radio terminal and can be displayed and transmitted automatically through acoustic combination, making it easy to perform manual location registration operations. There are advantages.

Furthermore, according to the present invention, in areas where location registration traffic is not a big problem even if automatic location registration similar to that of a car phone is performed, mobile radio terminals can be made to perform automatic location registration to avoid the risk of frequent location registration. In some places, a message indicating that location registration is required is displayed on the terminal, and the user is allowed to decide whether or not to register based on his or her will. On the other hand, in areas where automatic location registration is not possible, manual location registration from a land-line phone, etc. is required. This has the advantage of being able to adopt a location registration method that is appropriate for the environmental conditions, such as displaying on the terminal that it is necessary to do so.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a radio zone configuration for explaining the present invention in detail, FIG. 2 is a diagram showing an example of a block configuration of a mobile radio terminal according to the present invention, and FIG. 3 is a diagram showing a control of a mobile radio terminal. 2 is a flowchart showing an example. 101...Telephone station, 102...Radio control station, 103...Large radio base station, 104-10
7...Small wireless base station, 108-109...
...Mobile radio terminal, 110...Telephone, 112
...Location registration memory, 201...Control unit, 202...Transmission/reception unit, 203...
Display hole, 204... Sound part, 205...
・Sound section, 206...Memory, 207...
・Location registration button

Claims (1)

[Scope of Claims] A mobile radio terminal used in a mobile communication system in which a service area is configured of at least one small radio base station zone and at least one large radio base station zone, the mobile radio terminal comprising a small radio base station and A function that receives radio waves from a large wireless base station and uses the received information to detect when you have moved to a zone of a wireless base station different from the wireless base station you are currently in. When it is detected that the user has moved to a different wireless base station zone, the user of the mobile wireless terminal is notified of this and whether the new wireless base station is a large wireless base station or a small wireless base station. What is claimed is: 1. A mobile radio terminal comprising: means for displaying a different location; and a button for starting an operation for automatically registering a location from a mobile radio terminal to a radio base station.