KR20010103318A - Method for checking sending and receiving messages in down No.7 signal link at mobile communication exchange - Google Patents

Abstract

According to the present invention, when a mobile communication exchange checks a transmission / reception message for each section of an internal signal link, when the mobile communication exchange detects the corresponding signal link down by the mobile station when the mobile communication exchange transmits or receives a message through the No.7 signal link with the power station, The present invention provides a method for specifically providing an operator with fault information on a signal link. The present invention provides a method for receiving a signal link deactivation signal from a power station due to a loss or delay of a signal link management message after signal link activation. In this case, by automatically outputting data on the signal link management message type, transmission / reception time and failure interval in the signal link section in the exchange, the operator can easily recognize the failure in the signal link path inside the exchange.

Description

No.7 Method for checking sending and receiving messages in down No.7 signal link at mobile communication exchange}

The present invention relates to an exchange that performs signaling with a power station in No. 7 signaling in a mobile communication system. In particular, a signal link management message is lost or delayed from a power station due to a delay after signal link activation. When the signal is received, it automatically outputs data on the signal link management message type and transmission / reception time in the signal link section in the exchange, so that the operator can easily recognize the failure in the signal link path inside the exchange. The present invention relates to a method for checking message transmission / reception per link section during downlink of No.7 signal link in a communication exchange.

Figure 1 is a typical No. 7 protocol stack diagram.

As shown, MAP (Mobile Application Part), which is the highest mobile subscriber application unit, Transaction Capabilities Application Part (TCAP), which is a Q & A function unit, Signaling Connection Control Part (SCCP), which is a signal connection control unit, and performs a signaling message transfer function It is composed of a hierarchical structure such as a message transfer part (MTP). MTP provides Level 1 (Signaling Data Link), which defines the physical and functional characteristics of the signaling data link, and Level 2 (Signaling Link), which defines the procedures and functions related to the operation of transmitting signaling messages through one signal data link. It consists of Level 3 (Signaling Network) that defines the procedures and functions related to the operation of transferring messages between signal points of the signal network. Signal network function level 3 is composed of a signal message processor and a signal network manager.

In general mobile communication exchange using No.7 signaling method, the signal link is made level 1 and level 2 of MTP active, and then the signal link management message (SLTM) and signal link are connected through this signal link. This signaling link is managed in an active state after a management message response (response message to SLTM) is exchanged with a large station. And the signal link management message is exchanged with the power station periodically for the reliability of this signal link path.

If the signal link is deactivated for some reason after being activated, it can detect the deactivation status in the power station or the own station.

When the local station (its exchange) detects a path failure of a signal link, its own exchange can output the information about the failure section of the internal path and the corresponding message to the operator. This allows the operator to quickly take action on the failure of their own signaling link path.

However, when the response message for the signal link management message transmitted from the power station is lost or the response message is delayed, the power station detects a failure of the link path. In this way, when the signal link deactivation signal is received from the power station, the self station cannot know the problem in the path specifically. Therefore, the operator could not quickly identify the problem of the failure of the signal link, and it was difficult to access the path problem.

The present invention is proposed to solve the above disadvantages, the object of the present invention is

If the signal link management message is lost after the signal link is activated or a signal link deactivation signal is received from the power station due to a delay, data on the signal link management message type, transmission / reception time, and fault section in the signal link section in the exchange are displayed. The present invention provides a method for checking message transmission / reception per link section during downlink of No.7 signal link in a mobile communication switch, which enables the operator to know the failure of the signal link path inside the switch in a specific and easy way.

In order to achieve the above object, in the mobile communication exchange according to the present invention, a method for checking transmission / reception of messages per link section during downlink of No.7 signal link is provided.

SSHP performs a signal link down report to the ASP when a signal link deactivation signal is received from the power station;

When the signal link down report is received, checking whether a signal link is assigned to an SSFA;

And if the corresponding signal link is assigned, performing the step of outputting information on the failure status, such as the failure link interval information and the failure message type and failure time, received at the signal link down report to the operator. It is characterized by the configuration.

In order to achieve the above object, in the mobile communication switch according to the present invention, a method for checking transmission / reception of messages for each link section during signal link down is provided.

If a command is input from the operator to display information on the signal link failure interval and the failure message type, checking whether the input command is correct and the test condition is met;

Checking whether the corresponding ASP and the SSHP are active and the corresponding SSFA is in a normal state if the command is correct and the test condition is met;

If the corresponding ASP and SSHP are active and the signal terminal is in a normal state, requesting the SSHP to report a signal link down;

As a result of the request, when a normal response is received from the SSHP, a method of outputting information on a failure state such as information on a failure link section, a failure message type, and a failure time is performed.

1 is a No.7 protocol stack diagram;

2 is a signal link path diagram of No. 7 of a mobile communication switch to which the present invention is applied;

3 is an internal block diagram of SSHP and SSFA;

4 is a flowchart illustrating a message transmission / reception check method for each link section when no.7 signal link is down in a mobile communication switch according to an operator command according to the present invention;

5 is a flowchart illustrating a method for checking message transmission / reception per No. 7 signal link section in a mobile communication switch by receiving a signal link deactivation signal from a power station according to the present invention.

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

10: ASP01 20: SSHP

30: SSFA 40: TSW

50: SSW 60: Trunk

Hereinafter, a method of checking the transmission / reception of messages per link section during downlink signal link No.7 in a mobile communication switch according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating a No. 7 signal link path inside a mobile communication switch to which the present invention is applied.

This indicates an interval for buffering the time of the signal link management message transmitted and received through the corresponding link when the signal link management message is lost and delayed.

An ASP01 (Access Switching Processor) 10 is a main processor that performs access control with a power station, and a Signaling System Handling Processor (SSHP) 20 is a processor that processes a No. 7 signal message. Signaling System Four link board Assembly (SSFA) 30 performs a signal terminal function, Time SWitch (TSW) 40 is a time switch, SSW (Space SWitch) 50 is a space switch, The trunk 60 is a relay line for transmitting and receiving information with the power station.

Among the signal link path sections of the local station as described above, the sections which are likely to be lost or delayed are the ASP01 (10), SSHP (20), and SSFA (30) sections. Management message loss, delay interval and failure time can be seen.

3 shows an internal block configuration of SSHP 20 and SSFA 30.

The SSHP 20 is composed of a Signaling System Processor Assembly (SSPA) 21 that processes an MTP level 3 function and an Integrated Global Communication Board Assembly (IGCA) 22 that performs a matching function with the upper processor 10. The SSHP 20 is a device that handles Common Channel Signaling (CCS) No. 7 processing in a mobile communication switch such as a personal mobile communication (PCS) system. The SSHP 20 is matched with the time switch 40 to process MTP level 1 and level 2 functions. Located between the SSFA 30 and the ASP01 (10) performs a matching function. In the IGCA 22, the registration with the upper processor 10 is performed through IPC (Inter Processor Communication) through the Global Bus.

The SSFA 30 is a CPU 32, a friend matching unit 31, a static RAM (SRAM) 34, a sub-highway matching unit 33, and a DMA (Direct Memory Access) unit 35. It is composed. Thus, the matching of the SSPA 21 and the SSFA 30 is performed through the SIPC similar to the IPC format through the internal serial bus SC-BUS. In addition, the MTP level 2 function of the SSFA 30 is performed by the CPU 32, and the rate matching of the MTP level 1 function is performed by the subhighway matching unit 33.

4 is a flowchart illustrating a message transmission / reception check method for each link section when no. 7 signal link is down in a mobile communication switch according to an operator command according to the present invention.

As shown, if a command to display the information on the signal link failure interval and the type of failure message from the operator is input, checking whether the input command is correct and the test conditions (ST11, ST12); Checking whether the corresponding ASP (10) and the SSHP (20) are active and the signal terminal is in a normal state if the command is correct and the test condition is satisfied (ST13); If the corresponding ASP and the SSHP are active and the signal terminal is in a normal state, requesting the SSHP (20) to report the signal link down (ST14); As a result of the request, when a normal response is received from the SSHP 20, a step (ST16) of outputting information on a failure state such as a failure link section information, a failure message type, and a failure time to the operator is performed.

5 is a flowchart illustrating a message transmission / reception check method for each No. 7 signal link section in a mobile communication switch by receiving a signal link deactivation signal from a power station according to the present invention.

As shown, when the signal link deactivation signal is received from the power station, the SSHP 20 performs a signal link down report to the ASP01 10 (ST21); When the signal link down report is received, checking whether a signal link is assigned to the corresponding SSFA (ST22); If the corresponding signal link is assigned as a result of the check, the step (ST23) of outputting information on the failure status such as the failure link interval information and the failure message type and failure time received when the signal link down report is performed is performed (ST23). .

The message transmission / reception checking method for each link section when No.7 signal link in the mobile communication switch according to the present invention as described above is as follows.

In the mobile communication system using the No.7 signaling method, the signal link is active after the MTP level 1 and level 2 are activated, and then exchanges the signal link management message (SLTM) and management message response (SLTA) with each other. Manage by state. And for the reliability of the signal link path to the periodic transmission and reception of the management message with the power station, in the process of receiving a signal to deactivate the signal link due to the non-receipt of the signal link management message in the process, the local station in the ASP01 (10), The SSFA 30 checks the transmission / reception time of the signal link management message in the SSHP 20 and notifies the operator in real time. In addition, for the link deactivation that the operator did not check, the operator can enter the command again later to check the link deactivation status.

First, when a link deactivation signal from a large station is received in a local station, a method of outputting a failure section, a failure message type, and a failure time to an operator in real time will be described.

This is a flowchart illustrating a method for checking message transmission / reception per No. 7 signal link section in a mobile communication exchange by receiving a signal link deactivation signal from a power station.

When a large station fails to receive a signaling link management message due to a loss or delay of the signaling link management message through a corresponding signaling link that has been activated with the own station, the large station fails in the signaling link. And a signal link deactivation signal to the local station. This link deactivation signal is then received to SSHP 20 via trunk 60, SSW 50, TSW 40, SSFA 30 in sequence.

Meanwhile, the SSHP 20 stores and manages information on messages transmitted and received between the ASP01 10 and the SSFA 30. That is, information about the type of transmission / reception message, transmission / reception time, transmission / reception interval, and the like is stored.

When the link deactivation signal from the power station is received by the SSHP 20, the SSHP 20 transmits information on the corresponding signal link management message in the state just before a failure occurs to the ASP01 10 as a signal link down report. (ST21).

Thus, ASP01 (10) checks whether the signal link to be checked has been formed. That is, it is checked whether the corresponding signal link is assigned to the SSFA 30 (ST22). If the corresponding signal link is allocated, the information on the failure link interval received during the signaling link down report, the type of the failure message, the failure time, etc. Information on the failure status is output to the operator (ST23). Therefore, when the operator detects the deactivation of the signal link between the own station and the country, the operator can know the fault section, the fault message type, and the fault time of the station in real time.

Next, a description will be given of a method in which the operator outputs a signal link failure interval, a failure signal link management message type, and a failure time when the operator inputs a command later because the operator does not check it.

When a command is input from the operator to display information on the signal link failure interval and the failure message type, it is checked whether the input command is correct and test conditions are satisfied (ST11, ST12). As a result of the check, if the command is correct and the test condition is met, it is checked whether the corresponding signal link of the command is actually configured (ST13). That is, it is checked whether the corresponding ASP 10 and the SSHP 20 are active and the signal terminal is in a normal state. As a result, when the ASP 10 and the SSHP 20 are active and the signal terminal is in a normal state, the request for the signal link down report is requested to the SSHP 20 (ST14).

Then, the SSHP 20 transmits the information on the type, the transmission time, and the like of the signal link management message transmitted and received by the ASP01 10 and the SSFA 30 when the corresponding signal link is deactivated, to the ASP01 10 for the down report request. The response is transmitted (ST15).

In ASP01 (10), if a normal response is received, information on the failure status, such as the failure link interval information, the failure message type, and the failure time, is output to the operator (ST16).

The output form at this time can be output as follows.

"DIS-SLT-INFO: SSHG = a, SEQ = b"

Where SSHG represents a signal terminal group number. Four signal terminals (signal terminals) are provided in one SSFA 30, and one group of signal terminals is composed of four SSFAs 30 and is composed of 16 signal terminals. The SEQ represents 8 signal terminals (0-7 or 8-15) of one group of 16 signal terminals. Transmitting / receiving times of the management messages (SLTM, SLTA) of the signal link assigned to the corresponding signal terminal are outputted in eight according to SEQ.

In this way, the operator can easily identify faulty signal link intervals, fault message types, fault times, etc. using commands.

As described above, the method for checking the transmission / reception of messages per link section when the signal link is down in the mobile communication switch according to the present invention, the signal link management message is lost after the signal link is activated or the signal link is deactivated from the large station due to delay. When a signal is received, the operator automatically outputs data on the signal link management message type, transmission / reception time, and failure section in the signal link section in the exchange, so that an operator can easily recognize a failure in the signal link path inside the exchange. It is effective. In addition, by allowing the operator to quickly identify the obstacle section, it is possible to quickly identify the problem of the problem, thereby reducing the economic loss such as time and cost of problem solving, thereby improving operational efficiency.

Claims (3)

In the method that checks the transmission / reception of messages of each station's No.7 signal link section when receiving a signal link deactivation signal from a large station in the host station that configures ASP, SSHP, and SSFA as the No.7 signal link path, The SSHP performing a signal link down report to the ASP when a signal link deactivation signal is received from a power station; When the signal link down report is received, checking whether a signal link is assigned to the corresponding SSFA; And if the corresponding signal link is assigned, outputting information on the failure status such as the failure link interval information and the failure message type and failure time, which are received when the signal link down is reported, to the operator. Method to check message transmission / reception per link section when No.7 signal link is down in mobile communication exchange. The method of claim 1, wherein the signal link down report is performed. While storing information on the type, transmission and reception time, transmission and reception interval of the message transmitted and received between the ASP and SSFA through each signal link in the SSHP, when a report request is received, the information on the status of signal link deactivation is reported. Method of checking message transmission / reception per link section when No.7 signal link is down in mobile communication switch. In the method that checks the transmission / reception of messages of each station's No.7 signal link section when receiving a signal link deactivation signal from a large station in the host station that configures ASP, SSHP, and SSFA as the No.7 signal link path, If a command is input from the operator to display information on the signal link failure interval and the failure message type, checking whether the input command is correct and the test condition is met; Checking whether the corresponding ASP and the SSHP are active and the corresponding SSFA is in a normal state if the command is correct and the test condition is met; If the corresponding ASP and SSHP are active and the signal terminal is in a normal state, requesting the SSHP to report a signal link down; When a normal response is received from the SSHP as a result of the request, a No.7 signal in the mobile communication switch is performed, which outputs information on a failure status, such as a failure link interval information, a failure message type, and a failure time. Checking method of sending / receiving message per link section when link is down.