KR20020000061A - MESSAGE MONITORING METHOD OF No.7 BLOCK IN MOBILE COMMUNICATION EXCHANGER - Google Patents

Abstract

PURPOSE: A method for monitoring messages in a No.7 block in a mobile switching center is provided to store information for an SLTM(Signaling Link Test Message) and an SLTA(Signaling Link Test Acknowledge) in a circular buffer, in case that the messages are received in a No.7 block, to fetch the most recent information stored in the buffer when a signaling line is shut down, and to store it in another buffer so that an operator can confirm it. CONSTITUTION: A spos(signaling message handling processor operating system) in an SSPA(Signaling System Processor board Assembly) initializes the time data stored in an SLTM buffer, an SLTA buffer, a down buffer, and an error buffer to 0 respectively(S1). The spos receives an SLTM from the firmware of an SSFA(Signaling System Four channel signaling terminal board Assembly) and stores the received time in the SLTM buffer(S2). In response to the SLTM, the spos transmits an SLTA, transmitted from an ASP(Access Switching Processor), to the firmware of the SSFA and stores the transmitted time in the SLTA buffer(S3). The spos checks whether a signaling link was shut down(S4). If the signaling link was shut down, the spos receives an SLDOWN(Signaling Link DOWN) from the firmware of the SSFA and stores the signaling link downed time in the down buffer(S5). The spos fetches the transmitted and received time data for two most recently transmitted and received SLTMs and SLTAs from the SLTA buffer and the SLTA buffer respectively and stores them in the error buffer. Also the spos fetches the downed time from the down buffer and stores it in the error buffer together(S6). The spos outputs the transmitted and received time data stored in the error buffer to an operator terminal(S7).

Description

Message monitoring method in block No.7 in mobile communication exchange {MESSAGE MONITORING METHOD OF No.7 BLOCK IN MOBILE COMMUNICATION EXCHANGER}

The present invention relates to a message monitoring method in a block No.7 in a mobile communication exchange, and more particularly, a signaling link test message (hereinafter referred to as 'SLTM') and a signal link test response message in a block No.7. (Signaling Link Test Acknowledge; hereinafter referred to as 'SLTA') When receiving, information about SLTM and SLTA is stored in the circular buffer, and when the signal link is down, the most recently stored information is read from the circular buffer and stored in another circular buffer. The present invention relates to a message monitoring method in block No. 7 of a mobile communication switch that enables an operator to confirm this.

1 is a block diagram of a block No. 7 in a general mobile communication switch, and the block No. 7 in the mobile communication switch for transmitting and receiving a message No. 7 with the power station 40 includes an access switching processor (ASP) 10, It consists of a Signaling System Processor board Assembly (SSPA) 20 and a Signaling System Four channel signaling terminal board Assembly (SSFA) 30.

The No.7 block configured as described above monitors whether the No.7 message is normally delivered by transmitting and receiving the SLTM and SLTA.

That is, as in the transmission / reception flow of the SLTM and SLTA normally performed in the block No.7 shown in FIG. 2, when the station 40 transmits the SLTM to monitor the normal transmission of the message No.7 to the SSFA 30, This SLTM is transmitted to the ASP 10 via the SSFA 30 and the SSPA 20.

Subsequently, the ASP 10 transmits the SLTA as a response message to the SLTM to the power station 40 via the SSPA 20 and the SSFA 30.

On the other hand, as a result of monitoring the messages of SLTM and SLTA in the SSPA 20, when the SLTM transmitted from the power station 40 passes the SSPA 20 via the SSFA 30 and the response from the ASP 10 again. The time when the SLTA was received, that is, the time from the SSPA 20 to the ASP 10 and back, was about 32 ms.

However, during actual operation, an abnormal message flow may be monitored as shown in FIG. 3.

That is, as in the transmission / reception flow of the SLTM and SLTA which are abnormally performed in the block No. 7 shown in FIG. 3, the large station 40 transmits the SLTM to the ASP 10 for a predetermined time (for example, 10 seconds). If the SLTA is not received within a certain time, the SLTM is transmitted again after a certain time (for example, 10 seconds).

However, if the SLTA is not received again, it determines that the signal link is down and transmits a corresponding signal link number and a signal link down signal (Signaling Link DOWN: hereinafter referred to as 'SLDOWN').

Then, the ASP 10 manages the corresponding signal link down while transmitting the SLDOWN to the power station 40 in response to the SLDOWN.

Meanwhile, as a result of monitoring the messages of SLTM and SLTA in the SSPA 20, the first and second SLTAs for the first SLTM and the second SLTM are received to the SSPA 20 later than the response of the ASP 10 for the SLDOWN. It can be confirmed that this is because, for some reason, the SLTA, which is a response to the SLTM, arrives from the ASP 10 to the SSPA 20 in a delayed manner.

In addition, unlike the above state, there may be a case where the SLTA is not received at all.

As described above, the SLTA is received later than the response of the ASP 10 to the SLDOWN or not received at all, such that an abnormal state due to the loss of the SLTM and the SLTA occurs.

Accordingly, in order to debug the loss of the SLTM and SLTA by monitoring the SLTM and the SLTA, the terminal is connected to the debugging port (RS232C) for every SSPA and the operator monitors for 24 hours whether the problem such as the SLTM or the SLTA is lost. It was visually confirmed.

However, the conventional message monitoring method has to monitor days and days for 24 hours in order to debug a problem that occurs once every few days when the problem rarely occurs.

In other words, it takes too much time to continuously monitor and it is difficult to monitor only in one place, the conventional message monitoring method is very cumbersome and inefficient.

This was because it could be confirmed only through the message printed on the terminal when transmitting and receiving SLTM and SLTA.

The present invention is to solve the above problems, the object of which is to store the time information and other information about the SLTM, SLTA in the circular buffer when receiving the SLTM, SLTA in block No.7, and when the signal link down the circular buffer Reads the most recently stored information from the system and stores it in another circular buffer, and then monitors the message in block No.7 of the mobile switching center where the information stored in the circular buffer can be transferred to the operator's terminal or can be checked directly by the operator. To provide a way.

1 is a block diagram of a block No. 7 in a general mobile communication switch,

2 is a flowchart showing transmission and reception of SLTM and SLTA normally performed in block No.7;

3 is a flowchart illustrating transmission and reception of SLTM and SLTA abnormally performed in block No. 7;

4 is a flowchart illustrating a message monitoring method in block No. 7 in a mobile communication switch according to the present invention;

5 is a view for explaining the information storage operation in SSPA in block No. 7 of the present invention;

6 is a diagram illustrating a message monitoring method in block No. 7 in a mobile communication switch according to the present invention;

7 is a flowchart illustrating a method of checking signal link down information using an MMC command;

8 is a flowchart illustrating a method of checking signal link down information using a shell command.

<Description of the symbols for the main parts of the drawings>

10: ASP 20: SSPA

21: SLTM Buffer 22: SLTA Buffer

23: Down buffer 24: Error buffer

30: SSFA 40: Power

In order to achieve the above object, the message monitoring method in block No.7 of the present invention includes a SLTM buffer for storing SLTM reception time and other information in SSPA of block No.7, SLTA transmission time and others. SLTA buffer for storing information, down time for down signal link and downlink for storing signal link down information, reception time stored in the SLTM buffer, SLTA buffer, down buffer for down signal link, transmission time, down A buffer having an error buffer for reading and storing time and various other information; and after performing the buffering step, the SSPA receives the SLTM transmitted from the SSFA and stores the SLTM reception time and other information at the time in the SLTM buffer. After storing the SLTM receiving and receiving time storing step, and storing the SLTM receiving and receiving time storing step, SSPA sends SLTA, which is a response to the SLTM, to SSFA. After performing the SLTA transmission and transmission time storing step of storing the SLTA transmission time and other information in the SLTA buffer, and performing the SLTA transmission and transmission time storing step, it is determined whether the signal link is down and the SLTM is not down. Proceed to the receiving and receiving time storage step and repeat the following steps.If the signal link is down, the SSPA receives the SLDOWN transmitted from the SSFA and stores the down time and the signal link down information in the down buffer. After performing the time storage step and the SLDOWN reception and down time storage step, the two transmission and reception times and down times stored in accordance with the most recently transmitted and received SLTM and SLTA on the downlink signal link of the SSPA are stored in the SLTM buffer and the SLTA buffer and down time. Transmitting and receiving time storing step of reading from buffer and storing in error buffer, and performing transmitting and receiving time storing step After that, SSPA outputs the transmission and reception time information stored in the error buffer to the operator terminal via IPC to inform the operator or provide information for the operator to directly check the transmission and reception time information stored in the error buffer using an MMC command or a shell command and Characterized in that the confirmation step.

Hereinafter, with reference to the accompanying drawings will be described in detail the message monitoring method in block No. 7 in the mobile communication switch according to the present invention.

4 is a flowchart illustrating a message monitoring method in block No. 7 in a mobile communication switch according to the present invention, and FIG. 5 is a view for explaining information storage operation in SSPA 20 in block No. 7 of the present invention. 6 is a diagram illustrating a message monitoring method in block No. 7 of a mobile communication switch according to the present invention.

7 is a flowchart illustrating a method of confirming signal link down information using an MMC command, and FIG. 8 is a flowchart illustrating a method of confirming signal link down information using a shell command.

Referring to FIG. 4 to FIG. 8, the message monitoring method in block No. 7 of the mobile communication switch according to the present invention will be described.

Meanwhile, the message monitoring operation according to the present invention is performed between a signaling message handling processor operating system (spos) in the SSPA 20 of the block No. 7 and firmware in the SSFA 30, and the spos is performed by the SSPA 20. An operating system that runs on.

In the SSPA 20, as shown in FIG. 5, when the spos receives the SLTM from the firmware in the SSFA 30, the SLPA buffer 21 stores the SLTM reception time and other information. 30) SLTA buffer 22 for storing SLTA transmission time and other information in case of transmitting SLTA with my firmware, and down time and signal link down information when spos receives SLDOWN from firmware in SSFA 30. The down buffer 23 and the spos at the time of signal link down read the reception time, transmission time, down time and various other information stored in the SLTM buffer 21, SLTA buffer 22, down buffer 23 It comprises an error buffer 24 for storing.

The SLTM buffer 21, the SLTA buffer 22, the down buffer 23, and the error buffer 24 have five circular queues, which can store up to five information, for each of 16 signal links. It is configured separately.

The error buffer 24 reads and stores the reception time stored in the SLTM buffer 21 and the SLTA buffer 22, the most recent reception time of the transmission time, and two transmission times, and stores the received time in the down buffer 23. Read and save the stored downtime.

First, in the initialization step S1, the time stored in the SLTM buffer 21, the SLTA buffer 22, the down buffer 23, and the error buffer 24 in the spos in the SSPA 20 is initialized to 0, respectively. do.

After the initialization step (S1) proceeds to the SLTM reception and reception time storage step (S2), the spos receives the SLTM transmitted from the firmware in the SSFA 30 and transmits it to the ASP (10), the SLTM reception time and other The information is stored in the SLTM buffer 21.

That is, when the SLTM is transmitted from the firmware in the SSFA 30, which is the lower stage, to the SSPA 20, the spos receives it and stores the reception time in the queue indicated by the SLTM buffer [corresponding signal link number].

After the SLTM reception and reception time storage step S2, the process proceeds to the SLTA transmission and transmission time storage step S3, and in the ASP 10 in which the spos in the SSPA 20 is the upper MP (Main Processor) in response to the SLTM. The received SLTA is transmitted to the firmware in the SSFA 30, and the SLTA transmission time and other information at that time are stored in the SLTA buffer 22.

That is, spos transmits the SLTA to the firmware in SSFA 30, and stores the SLTA transmission time and other information at this time in the queue indicated by the SLTA buffer (corresponding signal link number).

After the SLTA transmission and transmission time storage step (S3) proceeds to the signal link down confirmation step (S4) to determine whether the signal link is down, and if the signal link is not down at this time, the SLTM reception and reception time storage step (S1) Proceeds to repeating the following steps, if the signal link is down proceeds to the SLDOWN receiving and down time storage step (S5).

In the SLDOWN receiving and down time storing step (S5), the spos receives the SLDOWN transmitted from the firmware in the SSFA 30 according to the down of the signal link, and the down time and the signal link down information at that time are stored in the down buffer 23. Save it.

After the SLDOWN reception and down time storage step (S5) proceeds to the transmission and reception time storage step (S6) and the spos is the SLTM buffer 21 for each of two transmission and reception times according to the SLTM, SLTA most recently transmitted and received on the corresponding signal link. Read from the SLTA 22 and store in the error buffer 24, and the down time of the signal link is read from the down buffer 23 and stored in the error buffer 24 together.

After the transmission and reception time storage step (S6) proceeds to the information providing and confirmation step (S7) and spos outputs the transmission and reception time information stored in the error buffer 24 to the operator terminal via IPC to inform the operator or the operator directly MMC Check the transmission and reception time information stored in the error buffer 24 using a command or a shell command.

That is, in the present invention, when the SLTM and SLTA are normally transmitted and received as shown in FIG. 5, the information is continuously updated in the SLTM buffer 21 and the SLTA buffer 22, respectively.

If the SLTA for the SLTM is not received twice in a row, the spos receives the SLDOWN from the SSFA 30, and accordingly, the SLTM buffer when the signal link is down in the order of 1), 2), 3), 4), and 5). The latest information stored in the 21 and the SLTA buffer 22 is stored in the error buffer 24.

6, when the signal link down occurs in the signal link 15, the information stored in the SLTM buffer [15], the SLTA buffer [15] and the down buffer [15] is stored in the error buffer [15] in the order of the numbers shown in FIG. Stored.

The information providing and checking step S7 may include transmitting information of the error buffer 24 to an operator terminal, checking information of the error buffer 24 using an MMC command, and using an shell command. Checking the information of the buffer 24 is made.

The process of checking the information of the error buffer 24 using the MMC command is performed when the operator inputs an MMC command in the MMC command input step S11 as shown in FIG. 7. In step S12), the spos transmits the information stored in the error buffer 24, that is, the transmission / reception time information and the signal link down information, to the operator terminal through the IPC, according to the MMC command, so that the operator can check.

The process of checking the information of the error buffer 24 using the shell command is performed when the operator inputs a shell command in the shell command input step S21 as shown in FIG. 8. In step S22, the spos searches only the queue in which the information in the error buffer 24 is stored according to the shell command, and then proceeds to the screen output step S23 where the operator sees only the information in the retrieved error buffer 24. Output through the screen so that.

The operator then checks the contents of the error buffer 24 and implements the corresponding action.

Meanwhile, the shell command is implemented as follows to check information on the SLTM and SLTA transmission / reception times for the most recently received SLDOWN.

slt start: Display the SLTM and SLTA transmission / reception times for all signal link numbers where the signal link has been down.

slt clear: Erases all information stored in the queue of the error buffer 24. Therefore, if a SLDOWN is received frequently, it will erase all stored information and help you check what has happened since that time.

For example, if you used a shell command:

SPOS S2.0: 154> slt start

; It means that you have not received SLDOWN at this time.

SPOS S2.0: 154> 1time

0 day 0: 1: 51 is elapsed since this processor starts

; The time elapsed since the processor was running is 1 minute 51 seconds.

SPOS S2.0: 154> slt start

SL 2 (Ox4340) TM: 0day 0hour 1min 30sec 608ms

SL 2 (Ox4340) TA: 0day 0hour 0min 0sec 0ms

SL 2 (Ox4340) TM: 0day 0hour 1min 40sec 984ms

SL 2 (Ox4340) TA: 0day 0hour 0min 0sec 0ms

SL 2 (Ox4340) DN: 0day 0hour 1min 51sec 320ms

; After receiving SLDOWN for signal link 2, the time of SLTM and SLTA of signal link 2 most recently transmitted / received is displayed on the screen.

In more detail, the SLTM was received from the SSFA 30 at intervals of about 10 seconds, but the SLTA was not received from the upper ASP 10 for 20 seconds (since the time was initially initialized to 0). The transmission time of the SLTA output above means that there was no actual transmitted signal). Accordingly, SLDOWN is received and the transmission / reception time information and the signal link down information are stored in the error buffer [2]. Will be confirmed.

As described above, the present invention stores information on the SLTM and SLTA in the circular buffer when receiving the SLTM and SLTA in the block No.7, and reads the most recently stored information from the circular buffer when the signal link is down. It is much easier to monitor and debug problems by storing the information in another circular buffer and sending the information stored in this circular buffer to the operator terminal or by allowing the operator to check it through commands. It also has the effect of easy access.

In addition, as soon as a problem occurs, the operator terminal can show the occurrence time and other information to the operator so that the user can quickly take measures to solve the problem, as well as dramatically reducing the operating expenses.

Claims (5)

SLTM buffer for storing SLTM reception time and other information in SSPA of No.7 block, SLTA buffer for storing SLTA transmission time and other information, and for storing down time and signal link down information when signal link down A buffer having a down buffer and an error buffer for reading and storing the SLTM buffer, the SLTA buffer, the reception time stored in the down buffer, the transmission time, the down time, and various other information when the signal link is down; After performing the step of providing the buffer, the SLPA receiving and receiving time storing step of receiving the SLTM transmitted from the SSFA and storing the SLTM receiving time and other information at the time in the SLTM buffer; After performing the SLTM reception and reception time storing step, an SLTA transmission and transmission time storing step of transmitting a SLTA, which is a response to the SLTM, to the SSFA and storing the SLTA transmission time and other information in the SLTA buffer; After performing the SLTA transmission and transmission time storage step, if it is determined that the signal link is down and the signal link is not down, proceed to the SLTM reception and reception time storage step and repeat the following steps, and if the signal link is down, SSPA is A SLDOWN reception and down time storing step of receiving SLDOWN transmitted from SSFA and storing down time and signal link down information at the time in a down buffer; After performing the SLDOWN reception and storage of the down time, an error is obtained by reading two transmission / reception times and down times stored according to the most recently transmitted / received SLTM and SLTA in the downlink signal link of the SSPA from the SLTM buffer, the SLTA buffer, and the down buffer. Transmitting and receiving time storing step of storing in a buffer, After performing the transmit / receive time storing step, SSPA outputs the transmit / receive time information stored in the error buffer to the operator terminal through IPC to inform the operator or the operator directly transmits / receives time information stored in the error buffer using an MMC command or a shell command. Message monitoring method in block No.7 in the mobile communication switch comprising the step of providing information to confirm and confirm. The method of claim 1, wherein in the buffering step, the SLTM buffer, the SLTA buffer, the down buffer, and the error buffer are composed of five circular queues and configured for each signal link. Way. The method of claim 1, wherein the providing and confirming of the information comprises: transmitting information of the error buffer to an operator terminal, confirming the information of the error buffer using an MMC command, and using the shell command. A message monitoring method in block No. 7 of a mobile communication switch, characterized in that the step of confirming the information. The method of claim 3, wherein the checking of the information in the error buffer using the MMC command comprises: an MMC command input step in which an operator inputs an MMC command, and an SSPA error in response to the MMC command input in the MMC command input step. A message monitoring method in block No.7 of a mobile communication exchange, comprising the step of transmitting information of an error buffer to transmit information stored in a buffer to an operator terminal through IPC. The method of claim 3, wherein the checking of the information in the error buffer by using the shell command comprises: a shell command input step in which an operator inputs a shell command, and an SSPA error according to the shell command input in the shell command input step; Information retrieval step of retrieving only the queue in which information is stored in the buffer, and a screen output step of outputting through the screen so that the operator can see only the information of the error buffer retrieved at the SSPA retrieval step Message monitoring method in block No.7 in the mobile communication switch, characterized in that made.