KR100236905B1 - Signal terminal alignment method of pcs - Google Patents

Abstract

The present invention is to effectively assign a signal terminal to a signal link in a system using the No.7 protocol. In the present invention, while the signal terminal is unassigned to the signal link, the terminal state of the signal terminal is normal and initial synchronization is achieved. By checking whether there is no failure to perform the procedure, by updating the signal link database and assigning the signal link, it is possible to prevent the deactivation of the signal link and automatically allocate the signal terminal.

Description

Signaling terminal allocation method in personal mobile communication system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Personal Communication System (PCS) system, and more particularly, to a method for effectively allocating a signal terminal to a signal link in a system using No. 7 protocol.

In general, the PCS system is a system that allows each individual to carry a small terminal, while moving and communication.

In order to interoperate with other systems using the No.7 protocol in such PCS system, the No.7 protocol hierarchy must be provided. As shown in Fig. 1, the block structure of the No. 7 protocol includes a visitor location register (VLR) 10 that stores location information of a mobile terminal that has entered the comprehensive range of the switching center 20. Wow; A mobile switching center (MSC) 20 for transmitting a call processing request of a mobile terminal through a public network or a dedicated network so that personal mobile communication service can be performed; An ISDN user unit 30 for providing an ISDN (Integrated Services Digital Network) service to a subscriber; A transaction capability application part (TCAP) 40 for processing the command of the visitor location registration unit 10 and the exchange station 20 and transmitting the command to the signal connection control unit 50; A Signaling Connection Control Part (SCCP) 50 for controlling the signal of the ISDN user unit 30 and the question-and-answer function application unit 40 to be connected to the message transfer unit 60; Level 3 (61) connected to the ISDN user unit 30 and the signal connection control unit 50, 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 (62) defining procedures and functions related to signal message transfer operation through one signal data link, and level 1 (63) defining physical and electrical characteristics of the signal data link. It was composed of a message delivery unit 60 for performing a delivery function.

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 undergo a signal link test to make the signal link useful for signal transmission, and deactivation of the signal link is performed by the operator. ) A series of actions that cause the message delivery service to be stopped for users.

The conventional signal terminal allocation method assigns a signal terminal of level 3 (61) and a signal data link of level 1 (63) to a signal link of level 2 (62) so as to correspond to No. 7 protocol hierarchy. The procedure was performed. If this initial synchronization procedure is successful, the test is initiated on that signal link, and if the test is successful, the signaling message service is available.

However, in the conventional method, since a signal terminal is statically assigned as a signal link at the initial operation of a system, an initial synchronization procedure, which is an initial operation between two systems using the same protocol, is performed to make the signal link available to a message transfer service. When the signal terminal fails after the signal terminal is statically allocated, there is a problem that the initial synchronization procedure using the failed signal terminal is not successfully performed.

In addition, it is difficult to know that the cause of the signal terminal failure that the initial synchronous procedure was not successfully performed, and the inconvenience that the user has to replace the signal terminal after replacing the signal terminal even after finding out that the cause is due to the failure of the signal terminal. There was a ham.

Accordingly, the present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to automatically allocate a signal terminal to a signal link when performing an initial synchronization procedure in a system using the No. 7 protocol. The present invention provides a signal terminal allocation method for a personal mobile communication system.

Signal terminal allocation method of the personal mobile communication system according to the present invention in order to achieve the above object,

When the signal terminal automatic allocation execution request is input, comparing the temporary assignment of the signal terminal number with a signal terminal number that is greater than the signal terminal maximum value by temporarily allocating an initial value of the signal terminal database signal terminal number; Checking the state of the signal terminal if the signal terminal number is less than or equal to the maximum value of the signal terminal, and performing an initial synchronization procedure to determine whether the initial synchronization procedure was successful; If the initial synchronization procedure fails, setting the failure experience to 'yes', temporarily increasing the signal terminal number by one and comparing whether the signal terminal number is greater than the maximum value; Setting the failure experience to 'none' when the initial synchronization procedure is successful, updating the signal link database signal terminal field to the corresponding temporary signal terminal number, and notifying the signal link management unit of successful signal terminal allocation; If the signal terminal number is greater than the signal terminal maximum, the method comprises a step of notifying the signal link management unit that there is no signal terminal to be assigned.

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

2 is a flowchart illustrating a signal terminal allocation method of a PCS system according to the present invention;

<Explanation of symbols for main parts of the drawings>

10: visitor location register 20: exchange bureau

30: ISDN user unit 40: question and answer function application unit

50: signal connection control unit 60: message transfer unit

61: level 3 (signal network) 62: level 2 (signal link)

63: Level 1 (Signal Data Link)

Hereinafter, an embodiment according to the technical spirit of the signal terminal allocation method of the present invention configured as described above is described in detail.

2 is a flowchart illustrating a signal terminal allocation method of a PCS system according to the present invention.

As shown in the figure, when a signal terminal automatic allocation execution request is inputted, temporarily assigning the initial value of the signal terminal database signal terminal number and comparing whether the temporarily allocated signal terminal number is larger than the signal terminal maximum value (ST1-ST3). Wow; If the signal terminal number is less than or equal to the maximum value of the signal terminal, checking the state of the signal terminal and performing an initial synchronization procedure to determine whether the initial synchronization procedure was successful (ST4-ST6); If the initial synchronization procedure fails, set the failure experience to 'Yes', temporarily increase the signal terminal number by one, and compare whether the signal terminal number is greater than the maximum value (ST7) (ST8); If the initial synchronization procedure is successful, set the failure experience to 'none', update the signal link database signal terminal field with the corresponding temporary signal terminal number, and notify the signal link management that the signal terminal allocation is successful (ST9-ST12). Wow; If the signal terminal number is larger than the signal terminal maximum value, the step of notifying the signal link management unit that there is no signal terminal to be allocated (ST13).

The step ST4 of checking the state of the signal terminal is characterized in that whether the signal terminal is unassigned to the signal link and the terminal state of the signal terminal is normal and there is no experience of performing initial synchronization procedure failure. .

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

First, the database of signal links is configured as shown in Table 1 below.

Signal link number One 2 … … 127 128 Signal link status (available, not available) Signal terminal number Signal Data Link

Here, when attempting to activate a signal link corresponding to a specific signal link number in the signal link database, if a signal terminal allocated to the signal data link of the signal link number in the signal link database is connected, the signal link is completed after the initial synchronization procedure. Tests may be performed to enable message delivery services.

The database of signal terminals is configured as shown in Table 2 below.

Signal terminal number One 2 … … 127 128 Signal terminal status (normal, abnormal) Failure experience (with or without) Assignment status (assigned, unassigned)

Accordingly, when a signal terminal automatic assignment execution request is input from the signal link management unit (ST1), the initial value of the signal terminal database signal terminal number is temporarily assigned (ST2), and the temporary allocated signal terminal number is compared with the signal terminal maximum value. (ST3).

Thus, if the signal terminal number is less than or equal to the signal terminal maximum, it is checked whether the signal terminal is unassigned to the signal link and the terminal state of the signal terminal is normal and there is no experience of performing initial synchronization procedure failure (ST4). If all are not satisfied, the signal terminal number is increased by one to be temporarily allocated, and the signal terminal number is compared with the signal terminal maximum value again (ST8). If the signal terminal is unassigned to the signal link and the terminal state of the signal terminal is normal and there is no failure in performing the initial synchronization procedure, the initial synchronization procedure is performed (ST5). If the result is a failure, the failure experience indication of the signal terminal database is displayed. Update to 'Yes' (ST6) (ST7), increase and temporarily allocate the signal terminal number, and compare whether the signal terminal number is larger than the maximum value (ST8).

If the initial synchronization procedure is successful, the failure experience of the signal terminal database is set to 'None' (ST9), and the signal link database signal terminal field is updated with the corresponding temporary signal terminal number (ST10) to allocate the signal terminal to the signal link management unit. Notification of success (ST11) (ST12).

On the other hand, if the signal terminal number is greater than the signal terminal maximum, the signal terminal assignment status is 'unassigned', the signal terminal status is 'normal', and there is no signal terminal with an initial synchronization procedure failure experience. The signaling link management unit is notified of the absence and the procedure is terminated (ST13).

In this way, signal terminals can be automatically assigned to signal links within a system using the No.7 protocol.

As described above, the signal terminal allocation method of the personal mobile communication system according to the present invention does not detect a failure of a signal terminal unlike static assignment of the signal terminal to a signal link in a system using the No.7 protocol. Therefore, the signal link can be prevented from being deactivated, and the signal terminal can be automatically assigned.

Claims (2)

When the signal terminal automatic allocation execution request is input, comparing the temporary assignment of the signal terminal number with a signal terminal number that is greater than the signal terminal maximum value by temporarily allocating an initial value of the signal terminal database signal terminal number; Checking the state of the signal terminal if the signal terminal number is less than or equal to the maximum value of the signal terminal, and performing an initial synchronization procedure to determine whether the initial synchronization procedure was successful; If the initial synchronization procedure fails, setting the failure experience to 'yes', temporarily increasing the signal terminal number by one and comparing whether the signal terminal number is greater than the maximum value; Setting the failure experience to 'none' when the initial synchronization procedure is successful, updating the signal link database signal terminal field to the corresponding temporary signal terminal number, and notifying the signal link management unit of successful signal terminal allocation; And notifying the signal link management unit that there is no signal terminal to be allocated if the signal terminal number is greater than the signal terminal maximum value. The method of claim 1, wherein the step of checking the state of the signal terminal comprises checking whether the signal terminal is unassigned to the signal link and the terminal state of the signal terminal is normal and there is no experience of performing initial synchronization procedure failure. Signaling terminal allocation method in personal mobile communication system.

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