JP2605619B2 - Notification method of maintenance operation information - Google Patents

Abstract

PURPOSE:To eliminate the need of a highly accurate timer in a radio base station and to construct an economical maintenance operation information system by reporting the information on the time and report time from a maintenance monitoring device to the radio base station. CONSTITUTION:The radio base station CS connects a call origination which is sent to a termination side of the maintenance monitoring device MS through a radio channel switchboard MX and an ISDN public network at the time of executing initial activation and reports the information of the initial activation to the maintenance monitoring device MS on a communication channel after the communication channel is set between the radio base station CS and the maintenance monitoring device MS. Then, the maintenance monitoring device MS transmits response signals including the information of the time and the report time to the radio base station CS. The radio base station CS performs the call origination connection to the maintenance monitoring device MS by a procedure similar to the time of the initial activation at a timing based on the information of the time and the report time and the maintenance monitoring device MS which receives periodical report information transmits the response signals including the time and the report time to the radio base station CS.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication network including a plurality of radio base stations CS and a circuit switching station MX, and a maintenance monitoring device M connected to the mobile communication network via an ISDN public network.
S, particularly when this communication system is constructed, when the maintenance monitoring device MS is connected to a plurality of wireless base stations CS in the communication system via the ISDN public network, the state of the device and the failure in the communication line are affected. The present invention relates to a method of notifying maintenance and operation information for enabling collection of information on occurrence and recovery of communication and communication traffic and the like.

[0002]

2. Description of the Related Art Conventionally, when centrally monitoring communication traffic from a plurality of radio base stations CS in a mobile communication network and the state of the apparatus or communication line of the radio base station CS, a maintenance monitor having this monitoring function is provided. The device MS has issued a signal requesting a report to the monitored radio base station CS and has requested a response. When the radio base station CS detects a device failure or a communication line failure, it notifies the maintenance monitoring device MS each time it occurs. Further, there has been a case where a clock function is provided in the wireless base station device, and the wireless base station device periodically sends a report signal at a predetermined time.

An example of this type of monitoring system is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-70321.

[0004]

By the way, in a communication system having a large number of radio base stations CS and in which the device status and communication traffic information of the radio base stations CS are centrally managed by the maintenance monitoring device MS, the following will be described. Points are required.
That is, when the timings of the report signals sent from the radio base station CS to the maintenance monitoring device MS are asynchronous with each other,
A state where communication requests are temporarily concentrated on the maintenance monitoring device MS may occur. For this reason, when designing the system, it is necessary to determine the processing capability of the maintenance monitoring device MS in consideration of the overload state, and a sufficient margin is required for the number of communication lines to be used.

In order to operate a large number of radio base stations CS in synchronization, each radio base station CS needs a high-precision clock function, or it is necessary to supply a timing signal to the radio base stations CS. A special communication line and a device for distributing the timing signal are required. For this reason, it is difficult to realize an economical communication system, and the cost of maintenance and operation of the communication system increases.

[0006] In view of the above problems, an object of the present invention is to provide a maintenance and monitoring apparatus MS which is capable of generating a fault in a device state or a communication line from a plurality of radio base stations CS in a communication system via an ISDN public network. An object of the present invention is to provide a method of notifying maintenance operation information to enable collection of information relating to recovery, communication traffic, and the like.

[0007]

According to the present invention, there is provided a method of notifying maintenance and operation information through a mobile communication network including a plurality of radio base stations and a circuit switching station, and via the mobile communication network and an ISDN public network. In a communication system comprising a maintenance monitoring device to be connected, the radio base station transmits an outgoing connection including the maintenance monitoring device number to the ISDN public network via the circuit exchange at the time of initial startup. After making a request and setting up a communication line between the wireless base station and the maintenance monitoring device, the wireless base station notifies the maintenance monitoring device of initial startup, and the maintenance monitoring device In response to the initial startup notification, a response signal including current time information and report time information is notified to the radio base station.

According to the present invention, the radio base station further comprises:
Based on the report time information included in the received response signal of the initial startup, the maintenance monitoring device sends a periodic report signal to the maintenance monitoring device, and the maintenance monitoring device that has received the periodic report signal outputs the current time information and the report as a response signal. A method of notifying maintenance operation information is provided, wherein a response signal including time information is notified to the radio base station.

[0009] The periodic report signal includes information on a device failure and a communication line failure detected by the radio base station, and a detection time added by the radio base station.

[0010]

According to the present invention, the radio base station CS makes an outgoing connection with the radio circuit switching office MX via the ISDN public network and the maintenance and monitoring device MS on the receiving side at the time of initial startup. After the communication line is set up between the maintenance monitoring devices MS, the information of the initial startup to the maintenance monitoring device MS is notified on the communication line. The maintenance monitoring device MS that has received the notification of the initial startup sends a response signal including the information of the time and the reporting time to the radio base station CS. Upon receiving the response signal to the initial startup, the radio base station CS makes an outgoing connection to the maintenance monitoring device MS at the timing based on the time / report time information in the same procedure as at the time of the initial startup, and transmits the periodic report information. The data is transferred to the maintenance monitoring device MS. The maintenance monitoring device MS that has received the periodic report information sends a response signal including time and report time information to the radio base station CS.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 schematically shows the configuration of a target mobile communication system, and includes a plurality of radio base stations CS _{1 to} CS _n.
And a mobile switching center MX, and a maintenance monitoring device MS connected to the mobile communication network via the ISDN public network 10. Radio base stations CS _{1 to} CS _n
And the circuit exchange MX are connected by digital transmission lines L _{1 to} L _n , respectively, and this connection is a digital transmission line having a channel structure of (4B + D) based on the CCITT I interface. PS _{1 to} PS _j indicate mobile stations, and the call connection protocol with the radio base stations CS _{1 to} CS _n is RCR-
Complies with SDT28.

A call between the mobile station PS ₁ and the fixed telephone TEL is transmitted via the radio base station CS ₁ and the circuit exchange MX to the IS.
This is performed by being connected to the DN public network 10. The maintenance monitoring device MS is provided for the purpose of collecting a control monitoring function and communication traffic data for a plurality of radio base stations CS.
(CCITT I interface compliant, 2B + D) connected to the ISDN public network 10.

FIG. 2 shows a processing sequence when the radio base station CS is initialized. As an example, the radio base station CS
_{When 1} is initialized (power is turned on, the device is reset), the radio base station CS ₁ transmits a call setup signal including a calling number and a called number (subscriber number of the maintenance monitoring device MS) and having a transmission capability of unrestricted digital transmission line. It is sent to the exchange MX. The subsequent communication protocol including the transmission of the call setting signal is CCITT Recommendation Q.3. 931 / I. 451, so a detailed description is omitted.
S ₁ and maintenance and the monitoring device MS is set in communication (unrestricted digital mode) state. On this time allocated communication channel (B channel), a radio base station CS ₁ sends the initial activation signal to maintenance monitoring device MS. The maintenance / monitoring device MS that has received the initial start signal transmits the signal to the radio base station C.
Send initial start response signal to the S _1. The initial start response signal corresponding to the initial start notification includes the current time and the periodic report time information.

FIG. 3 shows a case where the radio base station CS ₁ is connected to the maintenance monitoring device M.
7 shows a sequence for performing a periodic report to S. While the call connection procedure is the same as the initial activation, the wireless base station CS ₁ starts transmission operation at the time specified in the periodic report time information.
That is, the transmission of the call setting signal by the start of the timer causes the radio base station CS ₁ and the maintenance monitoring device MS to be in a communicating (unrestricted digital mode) state, and then the radio base station CS _1. Sends a periodic report signal including device status data and communication traffic data to the maintenance monitoring device MS. Maintenance monitoring device MS receives this periodic report signal, and sends the periodic report response signal to the radio base station CS _1. This periodic report response signal includes current time and periodic report time information.

FIG. 4 shows the configuration of the radio base station CS. The radio transmission / reception unit TRX has modulation, demodulation, power amplification, alarm detection, error detection, and radio traffic measurement functions. The alarm includes a synthesizer alarm and a power alarm caused by a device failure. The error includes an error in a received signal caused by a communication line failure. Radio traffic is transmitted and received between a mobile station PS and a radio base station CS. Targets control signals. The channel control unit SCNT
The circuit exchange MX is a digital transmission line L (L ₁ to L _{1 in} FIG. 1).
It is shown by L _n. ). Channel control unit SCN
T is a signal (voice) of a communication channel between the mobile station PS and the circuit switching station MX, which is ADPMC of the radio section.
The function converts the signal and the μlaw rule PCM signal in the wired section to each other, performs the call connection control function, and measures the wired traffic for the call connection control signal transmitted and received between the circuit exchange MX and the radio base station CS. Have.

The maintenance monitoring control unit MCNT sends and receives initial startup data to and from the maintenance monitoring device MS via the communication path control unit SCNT. The maintenance monitoring control unit MCNT further includes
It receives alarm, error, and wireless traffic information from the wireless transmission / reception unit TRX, receives wired traffic information from the channel control unit SCNT, and obtains the time of occurrence from the timer unit TIM described below for errors and alarms, and performs maintenance monitoring. The device MS is notified as periodic report information.

The timer unit TIM has a function of managing the time and the periodic report time, and obtains the current time and the periodic report time from the response data to the initial startup data or the periodic report data sent from the maintenance monitoring device MS. A start-up notification is sent to the maintenance monitoring control unit MCNT at the regular reporting time.

As an example, if the current time is 12:00 from the circuit switching center MX and the initial start-up data is received for a periodical reporting time of 30 minutes, the radio base station CS transmits a periodic report signal at 12:30. It is sent to the exchange MX.

FIG. 5 shows the configuration of the maintenance monitoring device MS. 931 / I. 45
1 and has a call control function based on the wire transmission line Lm (FIG. 1).
Lm) is connected to the ISDN public network 10 (FIG. 1). The information processing unit ICNT sends and receives initial startup data and periodic report data to and from the radio base station CS on the communication channel via the call control unit CCNT.

[0020]

According to the method of the present invention, the maintenance monitoring device MS
Notifies the radio base station CS of the time / report time information, so that the radio base station CS does not need to have a high-precision timer, and an economical maintenance and operation information system can be constructed. In addition, since the notification timing can be specified for the radio base station CS, concentration of signals for notification can be eliminated, the processing load on the maintenance monitoring device MS can be leveled, and the reliability of information transfer can be improved. Further, the radio base station CS and the maintenance monitoring device MS
Since the communication between them is performed by activating the radio base station CS, even when the outgoing connection from the maintenance monitoring device MS to the radio base station CS cannot be made, the maintenance monitoring device MS can maintain the radio base station CS.
There is an effect that traffic information and the like can be collected at a certain timing.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a configuration of a mobile communication system to which the present invention is applied.

FIG. 2 is a diagram showing a processing sequence when the radio base station CS is initialized.

FIG. 3 is a diagram showing a processing sequence in which a radio base station CS periodically reports to a maintenance monitoring device MS.

FIG. 4 is a diagram showing a configuration outline of a radio base station CS.

FIG. 5 is a diagram showing a configuration outline of a maintenance monitoring device MS.

[Explanation of symbols]

CS _{1 to} CS _n Radio base station MX Circuit switching station L, L _{1 to} L _n Digital transmission line Lm Wire transmission line PS _{1 to} PS _j Mobile station MS Maintenance monitoring device TRX Radio transmission / reception unit SCNT Communication path control unit TIM Timer unit CCNT Call control unit ICNT information processing unit

Claims (3)

(57) [Claims] 1. A communication system comprising: a mobile communication network including a plurality of radio base stations and a circuit switching station; and a maintenance monitoring device connected via the mobile communication network and an ISDN public network. At the time of initial startup, the radio base station issues an outgoing connection request including the maintenance monitoring device number to the ISDN public network via the circuit switching station, and establishes a connection between the radio base station and the maintenance monitoring device. After the communication line is set up, the wireless base station notifies the maintenance monitoring device of the initial startup, and the maintenance monitoring device responds to the received initial startup notification, and outputs the current time information and the reporting time. A method of notifying maintenance operation information, comprising notifying a response signal including information to the radio base station. 2. The radio base station sends a periodic report signal to the maintenance monitoring device based on the report time information included in the received response signal of the initial startup, and receives the periodic report signal from the maintenance monitoring device. The method according to claim 1, wherein the apparatus notifies the radio base station of a response signal including current time information and report time information as a response signal. 3. The periodic report signal according to claim 2, wherein the information on the device failure and the communication line failure detected by the radio base station and the detection time added by the radio base station are included. Notification method of maintenance operation information.