JP2828043B2 - How to reconnect a call - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a mobile radio system, and more particularly to a method for reconnecting a call which has entered a radio wave insensitive zone during a call and has been put on hold.

[0002]

2. Description of the Related Art Hitherto, a reconnecting method has been proposed for a call which has been temporarily suspended due to being unable to talk when passing through a radio wave blind zone. An example of a conventional reconnection method is described in Japanese Patent Application Laid-Open No. 6-315006. As shown in FIG. 2, when the mobile station 1 enters a radio wave insensitive zone (such as a tunnel) and a radio wave interruption occurs, as shown in FIG. Keeps transmitting a predetermined message, so that the base station 5
Alternatively, when the mobile device 1 detects a predetermined message, the exchange 3 releases the hold of the call and causes the telephone 2 and the mobile device 1 to reconnect.

[0003]

SUMMARY OF THE INVENTION
For example, when a dead zone such as a tunnel exists continuously at short intervals, for example, reconnection is performed every time the base station 5 receives a predetermined message transmitted from the mobile device 1.
Immediately, the radio wave is interrupted and the call is put on hold, and the connection and holding of the call must be repeated many times.

[0004] It is an object of the present invention to provide a reconnection method that does not perform unnecessary reconnection such that connection is immediately suspended.

[0005]

According to the method for reconnecting a call of the present invention, an area in which it is not possible to expect a continuation of a stable call due to radio wave propagation conditions is registered in advance in the information processing apparatus as an insensitive area, When the reception radio wave from the base station in communication is interrupted, the reception of the reception radio wave is continued, and when the interruption of the reception radio wave is restored, the location information indicating the location of the receiver is transmitted to the base station. The information is transferred to the information processing apparatus, and the information processing apparatus notifies the exchange of the result of comparing the location of the receiver indicated in the location information with the registered dead area. Reconnect the call on hold when at.

[0006] The call on hold may be a call that is put on hold when the call becomes unavailable due to the movement of the mobile station or when the location of the mobile station enters inside the dead zone.

[0007] A call on hold may be disconnected without reconnecting when the hold time exceeds a separately determined time.

The position information sent from the mobile device may be position information obtained by a GPS user device provided in the mobile device.

[0009]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of the main components of a mobile radio system to which the call reconnection method of the present invention is applied. The mobile radio system shown in FIG. 1 includes a mobile device 1 used by a user 1, a telephone set 2 used by a user 2, an exchange 3, an information processing device 4 connected to the exchange 3, a base station 5, and a blind zone. 6 is comprised. Dead area 6
Means that the business operator has, for example, a plurality of radio wave dead zones (6a,
An area in which it is not possible to expect a continuation of a call that is more stable than the radio wave propagation conditions, for example, b) is defined as the insensitive area 6, and is registered in the information processing apparatus 4 in advance. In addition, the mobile device 1 is a GPS (Global Positionin).
g System).

In FIG. 1, a mobile station 1 is located in a dead zone 6a.
When the mobile station 1 and the base station 5 detect the disconnection of the radio wave, the base station 5 notifies the exchange 3 of the interruption of the radio wave, and the exchange 3 suspends the line between the user 2 and the telephone. . The mobile device 1 continues to receive the radio wave and the GPS radio wave even after detecting the radio wave interruption from the base station 5. When the mobile station 1 leaves the dead zone 6a, the base station 5 receives GPS location information indicating its location from the mobile station 1 and transfers the location information to the exchange 3. The exchange 3 sends the position information to the information processing device 4, and the information processing device 4 compares the registered data of the dead area with the position information from the mobile device 1, and transmits the result to the exchange 3. Now, the mobile device 1 is located between the dead zone 6a and the dead zone 6b, and the dead zone 6 defined by the operator.
The exchange 3 does not perform the reconnection process. If the mobile device 1 has passed through the dead zone 6b adjacent to the dead zone 6a and has reached the outside of the dead zone 6, the exchange 3
Performs reconnection processing of the held call. That is, even if the mobile device 1 can communicate with the base station 5, if the mobile device 1 does not go out of the registered dead area 6, reconnection is not performed.

[0012] If a long time is required to hold a call because a large number of dead zones are continuous, a call set by the timer set in the exchange 3 is used to disconnect the call after a predetermined time has elapsed. .

In this embodiment, there is one exchange and one base station.
Although two dead zones have been described, the number is not limited, and the above-described embodiment can be similarly realized when the telephone 2 is replaced with a mobile device in FIG.

[0014]

According to the present invention, an area where a stable call cannot be expected to continue due to radio wave propagation conditions is registered as a dead zone, and once a call is disabled and held, the call is not reconnected unless the mobile station leaves the dead zone. Even when a dead zone such as a tunnel is continuous, there is an effect that connection and holding of a call are not unnecessarily repeated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of a main configuration of a mobile radio system to which a call reconnection method according to the present invention is applied.

FIG. 2 is a block diagram showing an example of a main configuration of a mobile radio system to which a conventional call reconnection method is applied.

[Explanation of symbols]

 Reference Signs List 1 mobile station 2 telephone 3 exchange 4 information processing apparatus 5 base station 6 dead area 6a, 6b dead zone (tunnel etc.)

Claims (4)

(57) [Claims] 1. A method for reconnecting a held call in a mobile radio system for reconnecting a call once held in an exchange when the mobile device passes through a radio wave insensitive area such as a tunnel. An area where call continuation cannot be expected is registered in advance as a dead area in the information processing device, and the mobile station continues receiving the received radio wave when the received radio wave from the base station in communication is interrupted. When the interruption of the radio wave is restored, position information indicating the location of the receiver is transmitted to the base station, the base station transfers the position information to the information processing device, and the information processing device Notifying the exchange of the result of comparing the location of the receiver with the dead area indicated in the above, the exchange reconnects the held call when the location is outside the dead area. Characterized Rukoto, reconnection method call on hold. 2. The call on hold according to claim 1, wherein the call on hold is a call held when the call becomes unavailable due to the movement of the mobile station or when the location of the mobile station enters the inside of the dead zone. How to reconnect a pending call as described. 3. The method for reconnecting a call according to claim 1, wherein the call on hold is disconnected without reconnecting when the hold time exceeds a separately determined time. 4. The call on hold according to claim 1, wherein the location information sent from the mobile device is location information obtained by a GPS user device provided in the mobile device. How to reconnect.