KR19990047890A - Signal terminal status checking method of mobile communication system - Google Patents

Abstract

The present invention is to automatically manage the level 2 signal link of the No.7 protocol periodically through an online test. The present invention provides an online test of a signal terminal group when the signal terminal group is mounted and the signal message processing processor is alive. Start the test, check the signal terminal status of the signal terminal group, update the status of the signal terminal and perform online test periodically until the last signal terminal. It can be seen that the signal link can be used stably.

Description

Signal terminal status checking method of mobile communication system

The present invention relates to a state check of a signaling terminal (ST) of a mobile communication system, and more particularly, to a method for stably maintaining a signal link by periodically managing a level 2 signal link of a No. 7 protocol.

In general, a mobile communication system is a system that enables communication while moving through a mobile terminal, and includes a personal communication system (PCS) system and a digital cellular system (DCS).

1 is a block diagram of a conventional PCS system No. 7 protocol.

As shown therein, a visitor location register (VLR) 1 for storing the location information of the mobile terminal which has entered the comprehensive range of the switching center 2; A mobile switching center (MSC) 2 for transmitting a call processing request of a mobile terminal through a public network or a dedicated network to enable a personal mobile communication service; An ISDN User Part (ISUP) 3 for providing an ISDN (Integrated Services Digital Network) service to subscribers; First and second Transaction Capability Application Part (TCAP) (4) (5) for processing commands from the visitor location registration unit (1) and the switching center (2) and transmitting them to the signal connection control unit (6); Signaling Connection Control Part (SCCP) 6 which controls the signal of the telephone user unit 3 and the first and second transaction function units 4 and 5 to be connected to the message transmitter 7. )Wow; Level 3 (8) connected to the telephone user unit 3 and the signal connection control unit 6, comprising a signal network management unit and a signal message processing unit, and defining procedures and functions related to message transfer operations between signal points of the signal network. And level 2 (9) defining procedures and functions related to signal message transfer operation through one signal data link, and level 1 (10) defining physical and electrical characteristics of the signal data link. It consists of a message transfer part (MTP) that performs a transfer function (7).

2 is a block diagram of a conventional digital cellular system.

As shown therein, ASS-7 (Access Switching Subsystem for No. 7 signaling), which is a subsystem processing the No. 7 protocol, including a main processor processing a higher layer of No. 7 signal, as shown in FIG. )and; First to eighth Signaling Subsystem Handling Processors (SSTPs) 12 to 14 connected to the ASS-7 (11) to manage a state of a signal terminal (STCA); According to the management of the first to eighth SSHP (12-14) it is composed of a plurality of Signaling Terminal Circuit board Assembly (STCA) (15-30) that performs a level 2 signal link function.

3 is a block diagram of a conventional improved mobile system.

As shown therein, ASS-7 (31) which is a subsystem for processing the No. 7 protocol, including a Main Processor for processing the upper layer of No. 7 signal; First to sixteenth message processing units (SMHPs 32-34) connected to the ASS-7 (31) to manage the state of the signal terminal and communicate with the level 2; A signaling terminal management logic board assembly (SMLA) 36 and a signaling terminal management processor assembly (SMPA) 37 which are in charge of the level 2 signal link according to the management of the first to sixteenth message processing units 32 to 34 and 1 to 16 signal terminals (ST, Signaling Terminal) (38-40).

In the No.7 protocol hierarchy configured as described above, Signaling Data Link (SDL) is used for actual transmission of a signaling message, and refers to a physical path composed of a digital or analog transmission medium. It is a bidirectional transmission channel consisting of two data channels running in opposite directions at the same speed. The signaling terminal (ST) is a device for performing all functions defined in the level 2 to reliably transmit a message using a signal data link. In addition, a signaling link (SL) is a link connected between signal points for the purpose of transmitting a signal message, and includes a signal data link and a signal terminal.

Wherein the signal network function corresponding to level 3 includes: a signal message processing unit for determining and distributing a message and performing a routing function; Signal traffic management function that performs Management Inhibit & Block, Traffic Flow Control, Changeover, Forced Rerouting, Controlled Rerouting, and Transmission Transfer Prohibited Procedures, Transfer Allowed Procedures, Signaling Route Set Test Procedures, Transfer Restricted Procedures, Transfer Controlled Procedures, and Root Congestion It consists of the signal network management unit including the signal route management function that performs the Route Set Congestion Test Procedure.

In addition, the signal link activation in the signal link management function of the signal network management refers to an operation function for creating a state in which the signal link is capable of transmitting a message message, and the signal link recovery is performed after the failure of the signal link is recognized. When the initial synchronization procedure is successful through the initial synchronization procedure of the signal link, it means a series of operations that the signal link is tested to make the signal link useful for signal transmission, and the channel link deactivation is performed by the operator. ) A series of actions that cause the message delivery service to be stopped for users.

However, because the operator does not know the status of the signal terminal, there is a problem that must be solved manually when a failure occurs in the signal terminal.

Accordingly, the present invention has been proposed to solve the above-mentioned conventional problems, and an object of the present invention is to maintain the signal link stably by periodically managing the level 2 signal link of the No. 7 protocol through an online test. There is provided a signal terminal state checking method of a mobile communication system.

In order to achieve the above object, a signal terminal state checking method of a mobile communication system according to the present invention,

Starting an online test of the signal terminal group if the signal terminal group is mounted and the signal message processing processor is alive; Checking the signal terminal state of the signal terminal group and updating the state of the signal terminal to perform an online test; The method comprises the step of periodically performing the online test to the last signal terminal.

1 is a block diagram of a conventional personal mobile communication system No. 7 protocol;

2 is a block diagram of a conventional digital cellular system,

Figure 3 is a block diagram of a conventional improved mobile system

4 is a block diagram of an improved message transmitter level 2 to which the present invention is applied;

5 is a flowchart illustrating a signal terminal state checking method of a mobile communication system according to the present invention.

<Explanation of symbols for main parts of the drawings>

1: Visitor Location Register 2: Exchange

3: telephone user unit 4: first transaction function unit

5: second transaction function part 6: signal connection control part

7: Message Transmitter 8: Level 3 (Signal Network)

9: Level 2 (Signal link) 10: Level 1 (Signal data link)

41-44: first to fourth SSFA 45-48: first to fourth IGCA

Hereinafter, an embodiment according to the technical idea of the signal terminal state checking method of the present invention configured as described above will be described in detail.

FIG. 4 is a block diagram of Level 2 of an enhanced message transfer part (MTP) 7 based on hardware belonging to an Access Switching Subsystem (ASS) of HDPX-HyunDai PCS eXchange (HDPX) -300 to which the present invention is applied.

As shown therein, the first to fourth SSFA (Signaling System level 2 Function board Assembly) 41 to 44 for processing the level 2 (9) of the message transmitting unit 7; SSPA (Signalling System no. 7 Processor board Assembly), ASP (Access Switching Processor) (not shown) and Signal Message Processor (SSHP) that processes Level 3 (8) of the message transmitter 7 And first and second integrated global communication board assembly (IGCA) 45 and 48 and first and second signaling system process board assembly (SSCA) providing communication paths between signaling subsystem handling processors (12-14) blocks. It is composed of

5 is a flowchart illustrating a signal terminal state checking method of a mobile communication system according to the present invention.

As shown therein, if the signal terminal group is mounted and the signal message processing processor is alive, starting the online test of the signal terminal group (ST1) (ST2); Checking the signal terminal state of the signal terminal group to update the state of the signal terminal to perform an online test (ST3-ST11); The online test is periodically performed to the last signal terminal (ST12).

In the above-described online test performing step (ST3-ST11), step (ST3) (ST4) for determining whether the signal link is unassigned or deactivated even if assigned; Testing the state of the signal terminal until the last signal terminal if the signal link is allocated (ST5); If the signal link is not assigned and is deactivated even if it is assigned, the method checks the state of the signal link periodically and updates the database (ST6 to ST11).

In the step of periodically checking the state of the signal link and updating the database (ST6-ST11), the SSFA (41-44) for processing the level 2 (9) of the message transmission unit 7 to the signal message processing processor Requesting a level 2 state of ST6; Determining whether the response result is normal (ST7) (ST8) if there is a response to the level 2 state of the SSFA (41-44); Updating the database by processing the state of Level 2 as normal if the response result is normal (ST9); If there is no response to the level 2 state of the SSFA 41-44 or if the response is not normal even if the level 2 state is answered, process the state of the level 2 as abnormal and update the database (ST10) (ST11) It consists of.

The database is characterized in that the signal terminal group of the mounting (Equip) and hernia (Not_Equip), the signal terminal state of normal and abnormal and alarm.

The operation of the signal terminal state checking method of the mobile communication system according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, it is determined whether the signal terminal group is mounted (ST1). Thus, if the signal terminal is mounted, the signal terminal group state of the database is updated to 'mount', and it is determined whether the signal message processing processor is alive (ST2). Therefore, if the signal terminal group is mounted and the signal message processing processor is alive, the online test of the signal terminal group is performed.

When the online test of the signal terminal starts as described above, it is determined whether the signal link is unassigned or deactivated even if assigned (ST3) (ST4). Therefore, if the signal link is assigned, the state of the signal terminal is tested up to the last signal terminal (ST5). If the signal link is not assigned and is deactivated even if it is assigned, periodically check the state of the signal link to update the database. do. That is, the signal message processing processor requests the level 2 state of the SSFA 41-44 (ST6). If there is a response in the level 2 state of the SSFAs 41-44, it is determined whether the response result is normal (ST7) (ST8). Therefore, if the response result is normal, the state of level 2 is processed as normal and the signal terminal state of the database is updated to 'normal' (ST9). If there is no response in the level 2 state of the SSFA (41-44) or the response is not normal even though the response is in the level 2 state, the status of the signal terminal of the database is updated to 'abnormal' by processing the state of the level 2 abnormally. (ST10) (ST11).

As such, the present invention maintains the signal link stably by periodically managing the level 2 signal link of the No. 7 protocol through an online test.

As described above, the signal terminal status checking method of the mobile communication system according to the present invention periodically manages the level 2 signal link of the No.7 protocol through an online test, thereby effectively providing information between the operators of the exchange. It is possible to know the status of the signal terminal from time to time, and there is an effect of using the signal link stably.

Claims (4)

In a mobile communication system providing a mobile communication service, Starting an online test of the signal terminal group if the signal terminal group is mounted and the signal message processing processor is alive; Checking the signal terminal state of the signal terminal group and updating the state of the signal terminal to perform an online test; And periodically performing the on-line test to the last signal terminal. The method of claim 1, wherein performing the online test comprises: Determining that the signal link is unassigned and deactivated even if assigned; Testing the state of the signal terminal until the last signal terminal if the signal link is allocated; And if the signal link is not assigned and is inactive even if assigned, the step of periodically checking the state of the signal link and updating the database. The method of claim 2, wherein periodically checking the state of the signal link to update the database comprises: Requesting the signal message processing processor a level 2 state of an SSFA for processing level 2 of a message transmitter; Determining whether the response result is normal when there is a response to the level 2 state of the SSFA; Updating the database by processing the state of Level 2 as normal if the response result is normal; If there is no response to the level 2 state of the SSFA or if the response is not normal even if the level 2 state is a response, the mobile communication system signal is configured to process the state of the level 2 abnormally and update the database. Terminal status checking method. The method according to claim 1, wherein the database comprises mounting and hernia of a signal terminal group state, normal and abnormality of a signal terminal state, and an alarm.