KR960009546B1 - Method for controlling data from message processing department in common line signal device - Google Patents

Abstract

initializing all variables and calling NDC(10) by resetting a network changing variable data to '0'(14) when a recovery function program of message signal processing is running; and calling MTP and SCCP recovery functions for recovering a network data with a signal message processor; thereby increasing the reliability of the system. The method also has an effect of preventing deterioration of traffic processing capability caused by failure of message processing unit by maintaining the number of normal processing.

Description

Data processing method of message processor in common line signal device

1 is a hardware configuration diagram of a common common line signal device.

2 is a software block diagram to which the present invention is applied.

3 is an overall flow chart of the recovery function according to the present invention.

4 is a flow diagram for recovering a message transfer unit and a signal connection control unit.

5 is a flowchart of a network data change confirmation function.

6 is a flowchart of a retry recovery function.

* Explanation of symbols for main parts of the drawings

1: Access Switching Processor (ASP)

2: Signaling Message Handling Processor (SMHP)

3: Control Networking (CI)

4: Signaling Terminal Network (STN)

5: Signaling Terminal Group (STG)

6: Time Switch Unit (TLU)

7: Access Switching Maintenance Processor (ASMP)

The present invention relates to a message processing unit data control method of a common line signal device.

In the process of restoring the signal network data of the message transmission unit and the signal connection control unit from the signaling room management unit to the signal message processor among the NO.7 signaling methods recommended by the International Telegraph and Telephone Committee (hereinafter referred to as CCITT). It is required to check whether data is correctly delivered and to retry if it is not correct, and to check whether the data has been recovered correctly by checking whether the network data is updated or not and recovering it during data recovery.

The present invention devised to meet the above requirements, the signal network data of the message transfer unit and the signal connection control unit from the signal network management unit to the message processing unit of the No. 7 signaling system, which is an international communication protocol recommended by the International Telegraph and Telephone Commission It is an object of the present invention to provide a data processing method of a message processing unit of a common line signal device for verifying whether or not a signal has been restored.

In order to achieve the above object, the present invention provides an Access Switching Processor (ASP), a Signaling Message Handling Processor (SMHP), a Control Network (CI), and a Signaling Terminal (STN). Network Management Block (SNM) in hardware with Network, Signaling Terminal Group (STG), Time Switch Unit (TLU), and Access Switching Maintenance Processor (ASMP) Common signal network with MTP signaling message processing block (S7MH), network data change checking function block (NDC), signaling network data initialization and recovery block (SDIR), SCCP routing and connected / disconnected control block (SMHS) In the data control method applied to the software, when the signal message processor recovery function program is executed, all internal variables are initialized and network change data variable values are reset to '0' (14). A first step of calling the NDC W; And a second step of restoring network data to a signal message processor by calling an MTP and SCCP recovery function after the NDC call.

Hereinafter, an embodiment of the present invention with reference to the accompanying drawings in detail as follows.

FIG. 1 is a hardware structure diagram for implementing No. 7 signaling, in which the functions of the message transfer unit and the signal connection control unit are implemented in this system.

The network management function of the message transfer unit and the signal connection control unit and the maintenance function for maintenance are mounted in the Access Switching Processor (ASP) to perform the integrated control management function of the system and to provide a plurality of signal messages. Signaling Message Handling Processor (SMHP) (2) is a processor in charge of message processing and data functions of the message transfer unit and the signal connection control unit. Control Interneterworking (CI), (3), is responsible for communicating with ASPs, signal message processors, and other systems.

Signaling Terminal Network (STN), (4), Signaling Terminal Group (STG), (5), Time Switch Unit (TLU), (6) It is the subordinate function of the message delivery unit as the actual hardware for the connection.

An Access Switching Maintenance Processor (ASMP) 7 is a processor that detects and informs of failure and recovery of this system.

Signal network data recovery function is to recover the network data and network state data necessary for normal operation of the restored message processing period when the hardware of the message processor is restored and all the software to be operated is loaded. It is installed in the ASP to communicate with the message handler through the CI. And, FOL stands for Fiber Optic Link.

2 is a software configuration diagram for performing the No.7 signaling function, and includes a signal network management unit, a message transfer unit, a signal message processing unit (S7MH (Signalling No. 7 Message Handling)), a signal connection control unit routing, and a connected / disconnected control unit ( Signaling Message Handling Subsystem (SMHS), Network Data Change Check (hereinafter referred to as NDC (Network Data Change check)), Signaling Network Data Initialization and Restoration Function (hereinafter referred to as SDIR (Signalling Data Initialization and Restoration)) It is composed.

The message processing function of the message transfer part and the routing and connection / no connection type control part of the signal connection control part are mounted together with a signal message processor to perform the function. Each of these parts communicates with each other and performs the data recovery function of the signal message processor. The signal network manager 8 manages the signal network data and the signal message processor state, and changes in the signal network data are displayed by calling the NDC 10 function, and notifies the SDIR 11 when the signal message processor state changes. The S7MH 9 of the signal message processor performs the function of processing the message transfer unit data and the SMHS 12 the signal connection control unit data. SDIR (11) is a signal message processor that receives the signal network data recovery request from the signal network management unit (8) when the system initializes the signal network data at the initial start-up, the signal transmission unit, the signal connection control unit, and recovers after a failure of the signal message processor. Perform a recovery.

NDC (10) is a function to indicate whether or not the network data changes during the recovery period of the signal network data to the signal message processor to call the NDC (10) when changing the network data in the signal network management unit 8 to retrieve the network data variable value It will count as '1'.

SDIR (11) calls NDC (10) to reset network data variable value to '0' at the start of signal message processor recovery, and calls NDC (10) again after signal message processor is restored to '1'. Check if the network data is changed and check if network data is changed. The signal message processor is composed of multiplexing to distribute traffic. Therefore, the recovery data of the new signal message processor can be operated normally only when the signal message processor data already in operation and the signal network manager 8 network data value match. Therefore, during the recovery, it checks whether there is any change in the signal network data and judges that it has been restored normally only when there is no change, and operates normally. The signal message recovery function recovers this data and also checks whether it matches the operating signal message data.

The recovery of the new signal message processor is performed at the request of the signal network management unit 8 at SDIR 11, and the SDIR 11 reads the signal network data so that the message transfer unit data is S7MH 9 and the signal connection control unit data is SMHS. Send to (12) to perform the recovery function of the signal message processor. When the signal message processor recovery is completed, the signal network manager 8 configures a new signal message processor multiplexing to distribute the traffic.

3 is an overall flowchart of a method of recovering a signal message processor according to the present invention.

When the signal message processor recovery function program is executed, all internal variables are initialized (13) and the NDC is called (15) by resetting the network change data variable value to '0' (14). At this time, setting the variable value to '0' indicates that the NDC starts to recover the signal message processor. After the NDC call, the message transmission unit and the signal connection control unit are called to restore the network data to the signal message processor (16).

4 is a flow diagram of a message transfer unit and a signal connection controller recovery function, and shows two methods for confirming that network data is correctly restored after recovery. In the first SDIR, each time the message transmitter and the signal connection controller network data are restored to the signal message processor, the number of transmission messages is increased by '1', and after all network data recovery, the message transmitter and the signal connection controller network data are received. Receive 18 a response. In this case, the signal message processor sends the number of messages received from the SDIR in response to the reception, and confirms the completion of the recovery of the message transfer unit and the signal connection controller by comparing the number of transmitted messages with the number of signal message processor received messages in the SDIR (19). . If the number of transmitted / received messages is the same, the NDC function is called by determining that the message transfer unit and the signal connection control unit have completed recovery, and if they are different, the retry recovery function is called by determining that the message transfer unit and the signal connection control unit have failed to recover (21). )do. The second checks the value of network data change variable returned from NDC when NDC function is called. That is, if the variable value is '1' and compares it with '22', if the value is '1', the retry recovery function is judged as the failure of the signal message processor recovery due to the network data change during the signal message recovery period, and the signal message processor recovery is started again. Call 24 and notify the signal network management unit 23 of the successful signal message processor recovery.

5 is a flowchart illustrating a network data change confirmation function.

NDC is called by both signaling network management unit and SDIR function. First, when the NDC function is started, it is determined whether the function that called NDC is SDIR (25). If it is determined as SDIR, the current network data variable value is transmitted (26), and network data is assigned to '0' (28). do. At this time, if there is a network data change, '1' is transmitted. If there is no change, it is transmitted as '0'. In the SDIR function, it is called at the start of recovery to initialize network data to '0' to indicate the start of recovery and at the end of recovery, the network data is read to check whether or not network data has changed during the recovery period of the signal message processor. On the other hand, if the call is from the signal network manager, the network data variable is assigned to '1' (27) to indicate the change of the signal network data.

6 is a flowchart of a retry recovery function, in which a signal message processor recovery operation is attempted again due to a failure of the signal message processor recovery.

First, it is called from SDIR when the signal processor recovery fails because of the transmission / reception problem. The second case is that the recovery of the signal message processor is judged to be failed due to the network data change during the recovery of the signal message processor, and the recovery of the signal message processor is started again. First, when this function is started, the recovery repeat variable value is increased by '1'. Thereafter, when the recovery repeat variable value is compared with '2' (30) and greater than '2', it is determined that the signal message processor has failed to recover the signal message processor more than two times, and notifies the signal network management unit (31). If it is less than '2', the message transfer unit and the signal connection control unit restore function are called 33 by setting the value of the number of messages transmitted from the message transfer unit and the signal connection control unit to '0' 32.

The present invention as described above can increase the reliability of the recovery by detecting the change of the network and the failure of the recovery in recovering data in the event of failure of the message processing unit of the common line signaling device, and also transfer the message through the recovery of the message processing unit Even after the fault recovery, the current state is maintained to enable normal operation, thereby enabling traffic transmission, and by recovering the faulty message processing unit, the number of message processing units performing normal functions is kept constant, resulting in failure of the message processing unit. There is an effect that can prevent the degradation of the processing capacity of the traffic.

Claims (4)

Access Switching Processor (ASP) (1), Signaling Message Handling Processor (SMHP) (2), Control Network (CI), (3) Signaling Terminal Network (STN) (4), Signaling Terminal Group (STG) (5), Time Switch Unit (TLU) (6), Access Switching Maintenance Processor (ASMP) (7) Signal network management block (SNM), (8), MTP signal message processing block (S7MH), (9), network data change confirmation function block (NDC), (10), signal network data initialization and recovery block in hardware In the data control method applied to the common line signal network software having (SDIR), (11), SCCP routing and connected / disconnected control blocks (SMHS), (12), the signal message processing recovery function program is executed. Initialize all variables and reset network change data variable value to '0' (14) A first step of calling C 10; And a second step of recovering network data with a signal message processor by calling an MTP and SCCP recovery function after the NDC (10) call. The method of claim 1, wherein the second step comprises: a first step of transmitting MTP and SCCP data from SDIR and confirming completion of MTP and SCCP recovery when a data reception response is received; A second step of checking whether a network data variable is '1' after invoking a retry recovery function if not completed and a network data change confirmation function if completed after the first process is performed; After performing the second process, if the network data variable is '1', the message processing unit data control of the common line signal device comprises a third process of invoking the retry return function or otherwise notifying after the completion of SMHP recovery completion. Way. The method of claim 2, wherein the second process comprises: examining a calling process; If the called function is SDIR, it sends the current network data variable value, assigns network data to '0', and if it is SNM, assigns network data variable to '1' and ends the process of indicating the change of signal network data Message processing unit data control method of a common line signal device comprising a. 3. The method of claim 2, wherein the retry recovery process in the second process and the third process comprises: checking whether the recovery variable is greater than 2 by increasing the recovery number variable value by one; If it is greater than 2, it notifies and exits the SMHP data recovery failure, and if it is not large, the MTP and SCCP recovery message is set to '0'. Message processor data control method.