JPH07111677A - Mobile communication system - Google Patents

Abstract

PURPOSE:To resume a telephone call again even if the call is cut by shift by storing a telephone line between one mobile station and the other telephone part and informing the telephone part that the call is possible or not when the call cannot be made. CONSTITUTION:When the mobile station 13b goes out of a radio area M2, the telephone line with the mobile station 13a is cut. The cut signal is transmitted from the station 13b to a fixed station 12b and RAM of an exchange 11. The stations 13b and 13a are written and stored. The exchange 11 informs the station 13a that the station 13b exists beyond the radio area M2. When the station 13b shifts from a radio area M3 to a radio area M4, the radio wave of the area M4 becomes stronger with the shift of the station 13b. When the station 13b shifts to the area M4, the fixed station 12d recognizes the position of the station 13b and informs the exchange 11 of it. The exchange 11 judges stored information of RAM and transmits an incoming signal from the station 12d to the station 13b. When the station 13b generates a response signal as against the incoming signal, stored information of RAM is eliminated and the call is resumed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication system, and in particular, when a mobile station in a call moves out of a wireless area due to movement and cannot make a call, the mobile station stores the information and stores it in the wireless area. The present invention relates to a mobile communication system that enables a call to be resumed when a mobile call is made.

[0002]

2. Description of the Related Art In a conventional mobile communication system, a plurality of fixed stations are connected to a telephone exchange, and a mobile station within a radio area of these fixed stations calls a mobile station, a telephone section, etc. within another radio area. It was made possible.

In this mobile communication system, one mobile station on the phone may move from the radio area of one fixed station to the radio area of another fixed station. In such a case, if there is a vacancy in the wireless line of another fixed station, connection will be established with the vacant wireless line, the previous wireless line during the call will be disconnected, and the call will be made via the destination wireless line. I am trying to continue.

However, if the wireless lines of other fixed stations are all blocked, the mobile station cannot connect to the telephone line in use and the call is disconnected after issuing a warning sound.

Such disconnection is the same when one mobile station is outside the radio area of one fixed station.

[0006]

As described above, in the conventional mobile communication system, once the call is disconnected due to the movement of the mobile station, the call is resumed even if the mobile station moves within the radio area where the mobile station can call. could not.

Therefore, there is a problem that the user cannot make a call even when he / she moves out of the wireless area for a short time, and when the call is continued, the phone operation must be repeated again.

In order to solve the above problems, the present invention provides a mobile communication system capable of restarting a call when the mobile station moves to a wireless area where the call can be made even if the call is disconnected due to movement. With the goal.

[0009]

The present invention comprises a telephone exchange for exchanging telephone lines, a plurality of fixed stations connected to the telephone exchange, and a mobile station wirelessly connected to these fixed stations. In the mobile communication system, in the telephone exchange, while the first mobile station is talking with another telephone section through the fixed station, the first mobile station moves out of the wireless area and cannot make a call. At this time, because the storage means for storing the telephone line between the mobile station of 1 and the other telephone section and the other telephone section of the telephone line destination stored by the storage means cannot be called by the mobile station of 1 Notifying means for notifying that the telephone is withheld for a while, and notifying that another telephone unit will resume the call when the mobile station of 1 moves into the wireless area and can make a telephone call. And a notification resuming means. There is provided a mobile communication system that.

Further, the fact that the one mobile station has moved out of the wireless area and cannot make a call with another telephone unit is stored in the storage means, and the one mobile station moves into the wireless area. There is provided a mobile communication system characterized in that the mobile communication system is provided with deletion means for storing in the storage means and deleting the telephone line after notifying the telephone section that the telephone is to be restarted.

[0011]

When the mobile station of 1 is in a call with another telephone section and the mobile station of 1 moves out of the wireless area and cannot make a call, the telephone line between the mobile station of 1 and the other telephone section is stored. To do. Notify the other telephone units that the mobile station of 1 is no longer able to make a call and will withhold the call for a while.

When one mobile station moves into the wireless area and can make a call, it notifies the other telephone units that the call can be resumed.

When one mobile station moves out of the wireless area and cannot call the other telephone units, it is stored and when the one mobile station moves into the wireless area and can make a call. Notify the telephone department of to restart the call, store it, and delete the telephone line.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the mobile communication system of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the mobile communication system 10 is provided with a telephone exchange 11.

The telephone exchange 11 has a plurality of office line terminals,
Extension terminals (neither shown), fixed stations 12a, 12b
... are connected to control these connections.

The fixed stations 12a, 12b ... Are each provided with a radio antenna, and a radio wave is radiated from these.

The reachable range of this radio wave is the radio areas M1, M2 ..., And one mobile station such as 13a within the range is another mobile station such as 13b ... or another station line terminal, extension terminal ( (Hereinafter referred to as the "telephone department").

The telephone exchange 11 has a CP as shown in FIG.
A RAM 15 controlled by U (not shown) is provided. This RAM 15 stores the mobile station and the telephone section in the call when the mobile station in the call becomes unable to make a call.
If this memory is stored, the disconnection notification, the reservation control, and the restart notification are sent to the telephone section under the control of the CPU.

The mobile communication system 1 configured as described above
The operation of 0 will be described with reference to FIGS. 1 to 4 and 5.

Now, for convenience of explanation, each fixed station 1
2a, 12b, ... Have only one wireless line, and if one mobile station 13a is busy, another mobile station 13c cannot be called.

Under such conditions, the mobile station 13b
Is in a call with the mobile station 13a through the fixed station 12b, the telephone exchange 11 and the fixed station 12a, and the mobile station 13c is in a call with another telephone section through the fixed station 12c and the telephone exchange 11. (See FIG. 1).

At this time, the mobile station 13b is in the radio area M2.
When moving to the wireless area M3 from, the wireless wave in the wireless area M2 weakens and the wireless wave in the wireless area M3 intensifies as the mobile station 13b moves.

However, since the mobile station 13c is in a telephone call with another telephone section via the fixed station 12c and the telephone exchange 11, the mobile station 13b has the fixed station 12c, the telephone exchange 11 and the fixed station 1.
2a, there is no telephone line to call the mobile station 13a.

Therefore, the mobile station 13b is in the wireless area M2.
When outside, the telephone line with the mobile station 13a is disconnected.
This disconnection signal is sent from the mobile station 13b to the RAM 15 via the fixed station 12b, the CPU of the telephone exchange 11, and the like. The mobile station 13b and the mobile station 13a are written and stored in the RAM 15.

At the same time as this storage, the telephone exchange 11 informs the mobile station 13a via the fixed station 12a that the mobile station 13b is outside the wireless area M2 by a recording voice or the like. When the telephone line is disconnected, RAM1
As long as the mobile station 13b and the mobile station 13a are stored in 5, the telephones cannot be called from other telephone units, and the continuation of the telephones is reserved (see FIG. 2). .

Further, when the mobile station 13b moves from the radio area M3 to the radio area M4, the radio wave in the radio area M3 becomes weaker and the radio wave in the radio area M4 becomes stronger as the mobile station 13b moves. When the mobile station 13b moves to the wireless area M4 (see FIG. 3), the fixed station 12d
Confirms the position of the mobile station 13b and notifies the telephone exchange 11 of it. The telephone exchange 11 judges the information stored in the RAM 15 and sends an incoming signal from the fixed station 12d to the mobile station 13b.

When the mobile station 13b generates a response signal to this incoming signal, it forms a telephone line to the mobile station 13a via the mobile station 13b, the fixed station 12d, the telephone exchange 11 and the fixed station 12a, and the recorded voice. Etc. are canceled, the stored information in the RAM 15 is deleted, and the telephone is restarted.

Therefore, even if the mobile station 13b is temporarily unable to make a call, the call can be restarted if the mobile station 13b moves to a wireless area where the call can be made. As a result, the mobile station 13b does not have to perform the dial operation or the like again.

In the above embodiment, the case where the mobile station 13b moved to the wireless area and was temporarily unable to make a call and was able to make a call again was explained.
b temporarily moves out of its own wireless area M2, and again,
Similarly, when the user moves into his / her own wireless area M2, the call can be recovered.

In the above case, the case where one fixed station 12a has one wireless line has been described, but the same applies to the case where there are two or more wireless lines.

[0031]

As described above, in the mobile communication system of the present invention, a telephone exchange for exchanging telephone lines, a plurality of fixed stations connected to the telephone exchange, and wireless connection to these fixed stations are provided. In a mobile communication system including a mobile station, one of the mobile stations is one in the telephone exchange.
During a call with another telephone section via the fixed station, when the first mobile station moves out of the wireless area and cannot make a call, the telephone line between the first mobile station and the other telephone section is stored. Storage means and notification means for notifying the other telephone section of the telephone line destination stored in the storage means that the mobile station is unable to make a phone call for a while because the mobile station cannot make a call. When the mobile station of 1 moves into the wireless area and becomes able to make a call, it is equipped with a notification resuming means for notifying the other telephone section that the call is restarted. You can continue to call again if you pass or if you enter the wireless area where you can call even outside the wireless area temporarily.

Further, the fact that one mobile station has moved to the outside of the wireless area and cannot call the other telephone section is stored in the storage means, and the one mobile station moves to the other telephone section within the wireless area. Since the deletion means for storing in the storage means and deleting the telephone line is provided after notifying that the call is to be resumed, one mobile station can continue to make a call while calling another telephone part. When is finished, it can be put in a standby state.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of operation of a mobile communication system of the present invention.

FIG. 2 is a block diagram showing an outline of another operation of the mobile communication system of the present invention.

FIG. 3 is a block diagram showing an outline of still another operation of the mobile communication system of the present invention.

FIG. 4 is a block diagram showing an outline of another operation of the mobile communication system of the present invention.

5 is an explanatory diagram showing a storage example of the telephone exchange shown in FIG. 1. FIG.

[Explanation of symbols]

 10 Mobile Communication System 11 Telephone Switch 12a, 12b Fixed Station 13a, 13b Mobile Station 15 RAM

Claims (2)

[Claims] 1. A mobile communication system comprising: a telephone exchange for exchanging telephone lines; a plurality of fixed stations connected to the telephone exchange; and a mobile station wirelessly connected to these fixed stations, wherein: The telephone exchange includes the mobile station of 1 when the mobile station of 1 moves to the outside of the wireless area and cannot make a call while the mobile station of 1 is talking with another telephone unit via the fixed station of 1. And a storage means for storing a telephone line with the other telephone section, and withholding the call for a while because the mobile station of the above 1 cannot make a call to the other telephone section of the telephone line destination stored by this storage means. And a notification resuming means for notifying the other telephone unit of resuming the call when the first mobile station moves into the wireless area and can make a call. Mobile communication system characterized by Beam. 2. The storage means stores the fact that the one mobile station has moved out of the wireless area and cannot make a call with another telephone unit, and the one mobile station moves into the wireless area and other The mobile communication system according to claim 1, further comprising: a deleting unit that stores the phone line in the memory unit and deletes the telephone line after notifying the telephone unit that the telephone is restarted.