JP2541782B2 - Roaming system between stations - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-station roaming system, and more particularly to an inter-station roaming system by broadcast notification in a mobile communication system.

[0002]

2. Description of the Related Art In the conventional inter-office roaming system, when one private branch electronic exchange services a private branch radio telephone which is not under control, the other private branch electronic exchanges are searched in order and The home memory station of the premises radio telephone is indexed, and the location of the premises electronic exchange of the home memory station is confirmed to confirm which premises electronic exchange the premises radio telephone is currently under management.

Further, as another example of the prior art, for example, in the "roaming registration / cancellation method" disclosed in Japanese Patent Laid-Open No. 63-280524, an ID unique to each system is used.
The mobile radio telephone that has given a number and moved from the system of the home memory station to the system of another ID forcibly receives the notification signal having the system number periodically sent from the connection device in the movement destination system, and then the mobile radio telephone forcibly moves to the destination ID system. Automatic location registration is performed on the wireless line control device, and when the mobile wireless phone moves from the system to the home memory station to the system of the home memory station or any system again, the wireless network control from the mobile wireless phone to the destination at regular intervals If the device is not accessed within a certain period of time to register the mobile location, it is considered that the mobile phone has been moved to another system, the wireless telephone is deregistered, and the PBX is connected and managed. There is.

[0004]

However, in this conventional inter-office roaming system, when one private branch electronic exchange services a private branch radio telephone which is not under control, another private branch electronic exchange is used. To find out the home memory station of the premises radiotelephone, confirm the position of the premises electronic exchange of the home memory station, and determine which premises electronic exchange the premises radiotelephone is currently under management. There is a problem that it takes a long time to provide the service because it is necessary to take many steps to confirm.

Further, in the conventional roaming registration / cancellation method, when the home memory station system is transferred to another ID system, automatic location registration is performed to secure a connection line with a new PBX, and a wireless telephone or wireless By maintaining and managing the connection with the PBX by performing access from the line control unit for a fixed period, the connection line with the PBX, which was previously secured, is released when the wireless telephone system transitions again. Then, the purpose is to secure the connection line for a long time or to avoid the release failure due to timer management or the like, which is completely different from the inter-station roaming method by the broadcast notification of the present invention.

An object of the present invention is to manage the location registration area information of all the indoor radio telephones by the all-premises electronic exchange so that the location registration area information at the time of calling the indoor radio telephone that has been roamed between stations can be stored. An object of the present invention is to provide an inter-office roaming method that can be confirmed in a private branch electronic exchange.

[0007]

According to the present invention, a plurality of radio base stations capable of accommodating a plurality of indoor radio telephones in respective radio wave ranges and each of the radio base stations in the same system area are controlled. Line control device, a plurality of private branch electronic exchanges that control the private branch radio telephone via each of the private link control devices and the radio base stations, and a line that connects the private branch electronic switches. In the mobile communication system provided, each of the private branch electronic exchanges manages location registration information for managing the location registration area information of all the private branch wireless telephones, and when new location registration occurs from the private branch wireless telephones. Broadcast notification means for broadcasting location registration area information to all of the private branch exchanges through the line, and the location registration error broadcast by the broadcast notification means. Inter-station roaming method characterized by comprising a writing means for writing restore information to said location registration information management unit is obtained.

The private branch electronic exchange stores a storage device having a location registration area information table for storing and managing the location registration area information of all the private branch wireless telephones, and newly registering the location from the private branch wireless telephones. When this occurs, the location registration area information is broadcast to all the electronic exchanges for the premises through the line, and the location registration area information thus broadcast is written in the location registration area information table. An inter-station roaming method is obtained which is characterized by including the following.

[0009]

Next, the present invention will be described with reference to the drawings.

FIG. 1A is a system block diagram of a mobile communication system showing an embodiment of an inter-office roaming system of the present invention, and FIG. 1B is a diagram showing an internal configuration of a private branch exchange in FIG. 1A. 2 is a diagram showing an example of the contents of the position registration area information table in FIG. 1 (b).

Referring to FIG. 1, the mobile communication system of this embodiment comprises a plurality of system areas 1a, 1b and 1c connected by a line 10.

The system area 1a includes a plurality of radio base stations (BS) capable of accommodating a plurality of indoor radio telephones (MSS) 9a, ... And 9b, ... In respective radio wave areas (calling areas) 7a and 7b. 8a and 8b, a line controller (LNC) 6a for controlling each BS 8a and 8b in the same system area 1a, and the LNCs 6a and B
MSS9a, ... Or 9 via S7a or 7b
.., and a private branch electronic exchange (MTS) 2a.

Similarly, in the system area 1b, a plurality of Bs capable of accommodating a plurality of MSSs 9c, ... And 9d, ... In respective radio wave areas (calling areas) 7c and 7d.
S8c and 8d and each B in the same system area 1b
LNC6b controlling S8c and 8d and this LNC
MSS 9c, ... via 6b and BS 7c or 7d.
Or 9d, ... And MTS2b for controlling.
In addition, the system area 1c has a plurality of MSSs 9 in the respective radio wave areas (calling areas) 7e and 7f.
, 9f, ..., a plurality of BSs 8e and 8f capable of accommodating e, ... And 9f, ..., An LNC 6c for controlling each BS 8e and 8f in the same system area 1c, and these LNC 6c and BS.
MSS 9e, ... Or 9 via 7e or 7f
It is comprised with MTS2c which controls f, ...

Then, as shown in FIG. 1B, the MTS 2a stores a central processing unit (CPU) 4a that controls all sequence control in the MTS 2a and a processing program (PGM) 52a executed by the CPU 4a, and stores its own data. All the MSSs 8a, ..., 8b in the system area 1a
And a storage device (MEM) 5a having a position registration area information table (TBL) 51a for storing and managing the position registration area information.

The CPU 4a is a PGM 52a in the MEM 5a.
By executing the following, the transmission / reception unit (R) transmits / receives the broadcast notification of the new location registration area information from the managed MSS.
S) 3a and LNCs 6a, ... Are centrally controlled.

The LNC 6a is connected to the BS 8a,
The line control of 8b is performed. In addition, BS8a, ..., 8
b is each radio wave area (calling area) using radio waves
.., 9b in 7a, ..., 7b are controlled.

Similarly, the MTS 2b stores the CPU 4b that controls all sequence control in the MTS 2b and the PGM 52b executed by the CPU 4b, and stores the location registration area information of all the MSSs 8c, ..., 8d, ... In the own system area 1b. And a MEM 5b having a TBL 51b for storing and managing.

The CPU 4b is the PGM 52b in the MEM 5b.
By executing the above, the MSS under the control sends and receives the broadcast notification of the new location registration area information through the RS 3b, and the LNCs 6b, ... Are centrally controlled.

The LNC 6b is connected to the BS 8c,
The line control of 8d is performed. Furthermore, BS8c, ..., 8
d is each calling area 7c, ..., 7d using radio waves
, 9d in the inside are controlled.

Similarly, the MTS 2c stores the CPU 4c that controls all sequence control in the MTS 2c and the PGM 52c executed by the CPU 4c, and stores the location registration area information of all MSSs 8e, ..., 8f, ... In the own system area 1c. And a MEM 5c having a TBL 51c for storing and managing.

The CPU 4c is a PGM 52c in the MEM 5c.
By executing the above, the MSS under the control sends and receives the broadcast notification of the new location registration area information through the RS 3c, and the LNCs 6c, ... Are centrally controlled.

Further, the LNCs 6c, ... Perform line control of the BSs 8e ,. In addition, BS
8e, ..., 8f are each calling area 7 using radio waves.
, 9f in e, ..., 7f are controlled.

T in each MEM 5a, 5b and 5c
BL51a, 51b and 51c are as shown in FIG.
It is composed of a telephone number (terminal ID) of each MSS, device numbers of MTS and LNC in the system area in which the MSS is located, and a calling area number.

Next, the operation of this embodiment will be described with reference to FIGS. Here, it is assumed that the MSS 9e existing in the calling area 7d (shown by a broken line) has moved to the calling area 7e as indicated by a solid arrow.

When the MSS 9e moves as described above,
The location registration request is made to the BS 8e by a generally known method. The BS 8e receives this location registration request and requests the LNC 6c to update the location registration information.
The c notifies the MTS 2c of this location registration information update request.

MT which has received this location registration information update request
In S2c, the CPU 4c causes the MEM 5c as shown in FIG.
MTS number 2b corresponding to terminal ID 9e of TBL 51c in
To the MTS number 2c.

Further, the CPU 4c sends a broadcast notification to the other MTSs 2a and 2b through the RS 3c and the line 10, and M
In TS2a and 2b, RS3a and 3b receive this broadcast notification, and the terminal ID of each TBL 51a and 51b.
The MTS number 2b corresponding to 9e, the LNC number 6b, and the calling area number 7d are rewritten to 2c, 6c, and 7e, respectively.

Thus, all M's of the mobile communication system are
The TBLs of TS2a, 2b, and 2c are rewritten at the same time to have the same contents.

Therefore, after this point, the MTS 2a, 2b which has received the outgoing / incoming service request to the MSS 9e.
And 2c are TBLs 51a, 51b and 5 in each station.
By searching for 1c, it can be recognized that the MSS 9e is currently in the calling area 7e, and the MTS 2c and LNC 6c control it.

[0030]

As described above, according to the present invention, a plurality of radio base stations capable of accommodating a plurality of indoor radio telephones within their respective radio wave ranges and a circuit for controlling each radio base station within the same system area. In a mobile communication system comprising a control device, a plurality of private branch electronic exchanges for controlling a private branch radio telephone via each line control device and a radio base station, and a line connecting between the private branch electronic exchanges, Each on-premises electronic exchange manages location registration information for managing location registration area information of all on-premises wireless telephones, and when new location registration occurs from the on-premises wireless telephone, this location registration area information is sent to all Broadcast notification means for sending a broadcast notification to the on-premises electronic exchange, and writing means for writing the location registration area information broadcast notified from the broadcast notification means into the location registration information management means. By providing the position of the wireless telephone for premises at which there is an outgoing call service request may be confirmed by referring to the location registration information management means of each private branch electronic exchange.

That is, it is not necessary to sequentially make a position confirmation request to a plurality of private branch exchanges when a call is made to a private branch radio telephone that has roamed between stations. Therefore, the time to provide the service is significantly shortened,
This has the effect of improving the processing capacity of the electronic exchange for the premises.

[Brief description of drawings]

FIG. 1A is a system block diagram of a mobile communication system showing an embodiment of an inter-station roaming system of the present invention,
(B) is a figure which shows the internal structure of the electronic switch for private use in the same figure (a).

FIG. 2 is a diagram showing an example of the contents of a location registration area information table in FIG. 1 (b).

[Explanation of symbols]

1a, 1b, 1c System Area 2a, 2b, 2c Electronic Exchange (MTS) 3a, 3b, 3c for Premises Transceiver (RS) 4a, 4b, 4c Central Processing Unit (CPU) 5a, 5b, 5c Storage Device (MEM) 6a, 6b, 6c Line control device (LNC) 7a, 7b, 7c, 7d, 7e, 7f Radio wave range (calling area) 8a, 8b, 8c, 8d, 8e, 8f Radio base station (BS) 9a, 9b, 9c, 9d, 9e, 9f Premises wireless telephone (MSS) 10 lines 51a, 51b, 51c Location registration area information table (TBL) 52a, 52b, 52c Processing program (PGM)

Claims (2)

(57) [Claims] 1. A plurality of radio base stations capable of accommodating a plurality of indoor radio telephones in respective radio wave ranges, a line control device for controlling the respective radio base stations in the same system area, and the respective line controls. In a mobile communication system comprising a plurality of private branch electronic exchanges for controlling the private branch telephone via an apparatus and the wireless base station, and a line connecting the private branch electronic switches, The electronic exchange manages the location registration area information of all the indoor radio telephones, and the location registration area information when new location registration occurs from the indoor radio telephones through all the lines. Broadcast notification means for sending a broadcast notification to the on-premises electronic exchange, and the location registration information management manual for the location registration area information broadcast from the broadcast notification means. An inter-office roaming method, comprising: writing means for writing data in stages. 2. A storage device having a location registration area information table for storing and managing location registration area information of all of the private branch wireless telephones in the private branch electronic exchange; and new location registration from the private branch wireless telephones. When this occurs, the location registration area information is broadcast to all the electronic exchanges for the premises through the line, and the location registration area information thus broadcast is written in the location registration area information table. The inter-office roaming system according to claim 1, further comprising: