JPH10336721A - Mobile communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid reliability deterioration of communication control in a whole system by connection-switching the mobile station of one control office to the other control office when the system-down of one control office is generated due to serious failure. SOLUTION: In a control office zone 1, the control of base stations 11 and 12 and the monitoring of the mobile station registered data of mobile stations 13 and 14 are operated by a control office 2. In a control office zone 15, the the control of base stations 17 and 18 and the monitoring of the mobile station registered data of mobile stations 19 and 20 are operated by a control office 16. When the system-down of the control office 2 is generated, or failure is generated in control lines 3 and 4 between the control office 2 and the base stations 11 and 12, the mobile station registered data are transmitted from the control office 2 through a communication line 21 to the control office 16. The control office 16 receives this, and operates the control or state monitoring of the base stations 11 and 12 through control lines 7 and 8 for system-back, and the monitoring of the base station registered data of the mobile stations 13 and 24.

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 in which a control station and a plurality of base stations are provided for each control station zone, and mobile station control information is exchanged between them.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a conventional mobile communication system. In the figure, reference numerals 22 and 30 denote independent control station zones, each of which has a plurality (here, two by two). ) Base stations 26 and 27 and base station 3
Control stations 23 and 31 are provided to control the control stations 4 and 35. In addition, each control station 23, 31 is connected to each base station 2
6, 27 and the control lines 24,
25 and control lines 32 and 33.
These base stations 26 and 27 and base stations 34 and 35
Has its own wireless zone as a communicable area for each of the mobile stations 28 and 29 and the mobile stations 36 and 37.

Further, mobile stations 28 and 29 belong to control station 23 via base station 26 or 27, and mobile stations 36 and 3
7 belongs to the control station 31 via the base stations 34 and 35, and is connected between the control station 23 and the base stations 26 and 27 and the mobile stations 28 and 29, and between the control station 31 and the base stations 34 and 35 and the mobile station 3
The monitoring and control of each mobile station registration data between the control stations 6 and 37 are independently performed only by the control stations 23 and 31.

[0004]

However, in such a conventional mobile communication system, the base stations 26 and 27 are provided.
And the base stations 34 and 35 are the control station 23 and the control station 31 respectively.
Can operate only in each of the control station zones 22 and 30. For example, when the control station 23 is down, or when a failure occurs in the control lines 24 and 25 between the control station 23 and the base stations 26 and 27. In such a case, the lower base station 26,
Since all 27 stops functioning, it is possible to make a call back to the base station between the mobile stations 28 and 29, but there is a problem that the reliability of the entire system is reduced until the call is restored.

The present invention solves the above-mentioned problem. When one of the control stations goes down due to a serious failure or the like, the mobile station of the control station whose system went down is connected to the other control station. By doing so, it is an object of the present invention to provide a mobile communication system capable of relieving a base station or a mobile station in a control station zone where the system is down and avoiding a decrease in reliability of communication control in the entire system.

[0006]

According to a first aspect of the present invention, there is provided a mobile communication system in which a control station and a plurality of base stations are provided for each control station zone. A mobile communication system for performing communication between stations, in which control stations in different control station zones are connected so as to exchange mobile station registration data in a control station zone of a partner with each other.

Further, in the mobile communication system according to the present invention, the control stations in different control station zones are connected to each other via a communication line for exchanging mobile station registration data in the control station zone of the other party. Connected.

A mobile communication system according to a third aspect of the present invention is a mobile communication system in which a mobile station under the control of one control station is connected to the other control station via a control line for system backup.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a mobile communication system according to the present invention.
Are independent control station zones, each of which is provided with a plurality of (here, two) base stations 11 and 12 and control stations 2 and 16 for controlling base stations 17 and 18 respectively. . The control stations 2 and 16 respectively control the control lines 3 and 12 for the base stations 11 and 12 and the base stations 17 and 18 respectively.
4, 9, 10 and control lines 5, 6, 7, and 8. Here, each control line 7, 8 and control line 9,
Reference numeral 10 is used to rescue the control station zones 1 and 15 when the control stations 2 and 16 are down. Each of these base stations 11, 12 and base stations 17, 18 has its own wireless zone as a communicable area.

Further, reference numerals 13, 14 and 19, 20 denote mobile stations within the radio zone of each of the base stations 11, 12 and base stations 17, 18. The stations 13 and 14 belong to the control station 2 via the base station 11 or 12, and the mobile stations 19 and 20
It belongs to the control station 16 via 18. In the normal state, the control station 2, the base stations 11, 12 and the mobile station 1
3 and 14, and between the control station 16 and the base stations 17 and 18 and the mobile stations 19 and 20, monitoring and control of each mobile station registration data are performed in parallel by the control stations 2 and 16. .

On the other hand, when the control station 16 is abnormal, the control station 2 controls the control station 16 and the base stations 17, 18 and the mobile stations 19,
Monitoring and control of mobile station registration data between the control station 1 and the control station 1 can be performed via control lines 9 and 10.
6 indicates that the control station 2 and the base stations 11, 1
The monitoring and control of mobile station registration data between the mobile station 2 and the mobile stations 13 and 14 can be performed via control lines 7 and 8. A communication line 21 connects the control stations 2 and 16 to each other and exchanges mobile station registration data in the control station zones 1 and 15.

Next, the operation will be described. Now, in the control station zone 1, the control station 2 and the base stations 11 and 12 and the mobile station 1
Monitoring of mobile station registration data of 3, 14 and base station 11,
It is assumed that control 12 is performed via control lines 3 and 4. At this time, even in the control station zone 15, the control station 1
It is assumed that monitoring of mobile station registration data of the base stations 17 and 18 and mobile stations 19 and 20 and control of the base stations 17 and 18 are performed via control lines 5 and 6 at 6.

In this state, the control station 2 goes down due to a serious failure, or the control station 2 and the base stations 11 and 12
If a failure occurs in the control lines 3 and 4 between the control station 2 and the mobile station registration data, the control station 2 sends the mobile station registration data to the control station 16 via the communication line 21. For this reason, the control station 16 receives the mobile station registration data, controls the base stations 11 and 12 and monitors the status of the base stations 11 and 12, and further controls the mobile stations 13 and 14 through the system backup control lines 7 and 8. Monitoring of mobile station registration will be performed.

On the other hand, when the control station 16 goes down due to a serious failure, or when a failure occurs on the control lines 5 and 6 between the control station 16 and the base stations 17 and 18, The mobile station registration data is sent to the control station 2 via the communication line 21. For this reason, the control station 2 receives the mobile station registration data, controls the base stations 17 and 18 and monitors the status of the base stations 17 and 18 via the system backup control lines 9 and 10, and further controls the mobile stations 19 and 20. Mobile station registration will be monitored

[0015]

As described above, according to the present invention, each control station in a different control station zone is configured to exchange mobile station registration data in the other control station zone with each other. When a station goes down due to a serious failure, the mobile station of the control station that has gone down is reconnected to the other control station, so that base stations and mobile stations in the control station zone that has gone down can be rescued. To reduce the reliability of communication control in the entire system,
The effect that low cost can be avoided with a simple system configuration is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a conventional mobile communication system.

[Explanation of symbols]

 1,15 control station zone 2,16 control station 7-10 control line for system backup 11,12,17,18 base station 13,14,19,20 mobile station

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04M 3/22

Claims (3)

[Claims] 1. A mobile communication system in which a control station and a plurality of base stations are installed for each control station zone, and communication is performed between the control station and each base station. A mobile communication system characterized in that the mobile communication systems are connected to exchange mobile station registration data in a control station zone of a partner. 2. The control stations of different control station zones are connected to each other via a communication line for exchanging mobile station registration data of the other control station zone with each other. A mobile communication system according to claim 1. 3. The mobile communication system according to claim 1, wherein a mobile station under the control of one control station is connected to the other control station via a control line for system backup. .