KR100216574B1 - Method for configuring data of signaling network using data assignment table in ATM switch - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Signaling network data composition using data allocation table in ATM switching system.

2. The technical problem to be solved by the invention

Efficiently construct and manage signal network data such as signal link and signal point in ATM switching system.

3. Summary of Solution to Invention

A first step of constructing a separate signal network data pointer assignment table from a signal network related database with a separate pointer identifying a signal network element; A second step of adding signal network information to a signal network information relation of a database by allocating a new pointer from the signal network data pointer allocation table when adding information according to a request for adding signal network information during operation; And deleting the signal network information of the database when deleting the information according to the request for deleting the signal network information during operation, and then deleting the allocation state of the pointer from the signal network data pointer allocation table.

4. Important uses of the invention

Applied to construct signaling network data for signaling between network nodes in ATM switching system.

Description

Method for configuring data of signaling network using data assignment table in ATM switch}

The present invention relates to a method for configuring signal network data using a data allocation table in an asynchronous transfer mode (hereinafter referred to as ATM) switching system.

The conventional switching system that implements the network node interface (NNI) signaling scheme implements the functions of the message transfer unit and its upper and lower layers according to their structure. Accordingly, in order to implement the NNI signaling scheme in the ATM switching system, There is a need for a method of configuring and managing signal network data suitable for the structure and distributed structure of MTP-3.

Data constituting the signal network, such as signal link and signal point, is referred to from the various blocks constituting the NNI signaling method, the configuration form of this data directly affects the performance of the signal network.

In addition, the number of signal network data stored and operated in the actual switching system is relatively small compared to the range of key values for distinguishing the signal network data, thereby efficiently storing the signal network data and reducing the search time when processing the signal message. I need a way.

Therefore, the present invention devised to meet the above demands, the efficient configuration and management of the signal network data, such as signal link, signal point, the addition / deletion of data in accordance with the change of the signal network during operation and the signal network A method of constructing signal network data using a data allocation table to facilitate data modification according to a change of state and to improve signal message processing capability of a switching system by shortening a retrieval time of data referenced in processing a signal message. The purpose is to provide.

1 is an exemplary configuration diagram of a message transfer unit of an ATM switching system to which the present invention is applied.

2 is a structural diagram of a signal network database relation and pointer allocation table used in the present invention;

3 is a flow diagram of an embodiment of a method for configuring signal network data using a data allocation table according to the present invention;

* Explanation of symbols for the main parts of the drawings

1: OMP 2: CCCP

3: signaling link management block 4: signaling traffic management block

5: Signal message processing block 6: Database management block

7: Signaling network related database

In order to achieve the above object, the present invention provides a signal network data pointer allocation table from a signal network related database having a separate pointer for identifying a signal network element in a signal network data construction method applied to an asynchronous delivery mode switching system. A first step of constructing; A second step of adding signal network information to a signal network information relation of a database by allocating a new pointer from the signal network data pointer allocation table when adding information according to a request for adding signal network information during operation; And deleting the signal network information of the database upon deleting the information according to the signal network information deletion request during operation, and then deleting the allocation state of the pointer from the signal network data pointer allocation table.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is an exemplary configuration diagram of a message transfer unit of an ATM switching system to which the present invention is applied.

The ATM switching system includes one Central Switching Subsystem (hereinafter referred to as ACS) and a plurality of ATM Local Switching Subsystems (hereinafter referred to as ALS).

ACS has an Operating and Maintenance Processor (hereinafter referred to as OMP) (1), which is a processor equipped with a system-wide control function such as operation maintenance, network management, and routing control, and ALS is ALS. A call and connection control processor (hereinafter referred to as CCCP) 2 which is a processor that is in charge of call control signal processing, operation, maintenance, and so on.

CCCP (2) is performed by mounting the subscriber-related block or relay line-related blocks in accordance with the characteristics of the ALS. The message transfer unit to which the present invention is applied is implemented in a distributed manner in OMP 1 of ACS and CCCP 2 of ALS having a relay line function.

As shown in the figure, a message transfer part level 3 (hereinafter referred to as MTP-3) functional block is a signaling link management block (hereinafter referred to as SLM) 3 Signaling Traffic Management (hereinafter referred to as STM) 4 and Signaling Message Handling Block (hereinafter referred to as SMH) 5. Here, SLM (3) controls the activation and deactivation of the signal link, STM (4) is responsible for changing the routing of signal traffic according to the signal network status, SMH (5) is the user portion and the signal ATM adaptation layer ( It is in charge of actual signal message processing between Signaling ATM Adaptation Layer (SAAL).

In the ATM switching system architecture, the SMH (5), which requires real-time processing in connection with the actual message transmission, is implemented in each CCCP (2), and the SLM (3), which requires integrated management of the signal network components connected to each power station, and STM 4 is implemented in OMP 1 of ACS. The signal network data, which is mainly managed by the SLM 3 and STM 4 and referenced by the SMH 5, is stored in the OMP 1 in relation to the database 7 and accessed through the database management block 6. do.

In addition, the signal network data is added and deleted by the SLM 3 and the STM 4 at the request of the operator, and changed according to the state of the signal network. The SMH 5 consults the database to refer to the status of the signaling network when transmitting and receiving signaling messages to or from the network.

Therefore, signal network data is more frequently searched for the status of the signal network than addition and deletion, which affects the performance of the switching system. The present invention seeks to find a data construction method that reduces the search time of a frequent database while effectively adding and deleting signal network data.

2 is a structural diagram of a signal network data structure and a pointer allocation table used in the present invention.

As shown in the figure, a signal point is composed of a 2-bit network identifier (NI) 12 of a signal network to which a switching system serving as a signal point belongs and a 14-bit signal point code (SPC) 13 assigned to the signal point. Is defined. In addition to the network identifier and the signal point code, the signal point information relation 10 stores information 14 related to signal points such as the number of signal links connected to the signal points, the number of available signal links, the signal point availability status, and the like.

In the signaling network, a signal point represents one switching system that processes a signaling method, and is defined by a network identifier (0 to 3) and a signal point code (0 to 16383), and stores signal point data in a database in the switching system. If the network identifier and signal point code are used as key values, the number of 4x16384 signal points is required. However, since the number of signal points defined and used within one exchange system represents the number of exchange systems that are connected and communicated, 128 ~ 512 numbers are generally defined and used according to the capacity of the exchange system. Therefore, since the number of signal points actually defined and used is much smaller than the case of using the network identifier and the signal point code as key values, the present invention designates signal points internally to prevent a large amount of storage space wasted. A separate integer pointer (signal point pointer) 11 is provided to store one signal point information in a tuple of a position corresponding to the pointer.

Therefore, in order to store the signal point information at the position of the signal point pointer, the signal point pointer must be allocated first. The signal point pointer assignment table 8 used in the present invention has an array structure indicating whether signal point data is allocated for each signal point pointer, and when each data point is assigned signal point data to the signal point pointer value, It has a value of '1' or '0', and the signal point pointer assignment table is stored as local data of the SLM.

In addition, a signal link is defined by a signal point and a signal link code to be connected. Therefore, when designating one signal link, a 2-bit network identifier of a connected signal point, a 14-bit signal point code, and a 4-bit signal link code are used. Therefore, the signal link may have 4x16384x16 values. The signal link also constitutes a signal link pointer and a signal link pointer assignment table 9 for the same reasons as the signal point data. The signal link information relation 15 storing data for a signal link in an ATM switching system constitutes a signal link in addition to a signal point pointer 17 and a signal link code 18 indicating a signal point connected to each signal link. It stores information and state 19 related to a signal link such as a path and a speed indicating a signal channel, a next signal link connected to the same destination, an available state of the signal link, a prohibition of management, and routing information.

Similar to the signal point, each signal link-specific information is assigned to a tuple of initial network data data or a position of a signal link pointer allocated during operation. The signal link pointer assignment table 9 is an array structure indicating whether signal link data is allocated for each signal link pointer. Each data is '1' or '0' when signal point data is assigned to the signal link pointer value. Has a value.

3 is a flowchart illustrating a method of configuring signal network data using a data allocation table according to the present invention.

As shown in the figure, the asynchronous delivery mode switching system initializes the signal point pointer assignment table to '0' in order to reconstruct the signal point pointer assignment table previously allocated at startup or restart (20).

Subsequently, the signal point information defined from the signal point information relation is searched for signal point pointers in order (22) and the existence of the tuple is checked (23). If there is, the corresponding signal point pointer position in the signal point pointer assignment table is set to '1'. In this case, the next defined signal point is searched (25) until the database search state indicates that there are no more defined tuples. Do this for the signal link to configure the signal link pointer table.

On the other hand, when the asynchronous transfer mode switching system receives a request for adding signal point information from the operator during operation (27), the signal point pointer assignment table is continuously checked from the beginning to obtain an unassigned signal point pointer whose content is '0'. (28), add a tuple to the database with the signal point related data input from the operator at the position of the signal point pointer as input data of the database (29), and if the tuple addition is successful, the corresponding signal network data in the signal point pointer assignment table The position is marked as '1' (30).

On the other hand, when the asynchronous delivery mode switching system receives the signal point information deletion request from the operator during operation (31), the input signal point information is deleted from the signal point information relation (the network identifier and the tuple corresponding to the signal point code are deleted). (32), the corresponding signal point pointer position of the signal point pointer assignment table is indicated by '0' (33). The signal link is also configured in the same way as the signal point, and is added and deleted. In the case of the signal link, the input network identifier and the signal point code are obtained from the signal point information relation as the search condition of the database, and then stored in the signal link information.

Accordingly, the method of configuring a signal network data using a data allocation table according to the present invention uses a signal network data pointer table, stores only defined data in a database, and stores the defined data in a database as much as the maximum possible pointer value in a conventional narrowband ISDN switching system. If you preconfigure tuples and place an attribute in the database that indicates whether they are assigned to each other, you need to search the database to obtain unallocated tuples when adding network data, and modify the tuples to store the data. Can be reduced. In addition, in the conventional case, when deleting the signal network data, the database tuples should be modified to unassigned state, and access to the database is relatively necessary since the processing of the signal message with a large number of data retrieval during operation should always check whether the signal network data is allocated. Since more time is required, this can be improved by using signal point and signal link pointer assignment tables.

The present invention described above is capable of various substitutions, modifications, and changes within the scope without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains, and thus is limited to the above-described embodiments and drawings. It is not.

Therefore, in the present invention, in configuring the signaling network data for signaling between network nodes in an ATM switching system, a separate signaling point pointer assignment table and a signal link pointer assignment table are constructed, and the signal network is manipulated by manipulating the configuration of the signaling network data. By storing only the values for the allocated pointers in the data relations, you can reduce the number of database accesses by obtaining the unallocated pointers from the local data when adding the network data, and reduce the number of accesses to the database due to the initialization of the data. In addition, it is possible to improve the performance of the signal network function by reducing the entire search time of the data by storing only the data necessary for the use of the data in the database.

Claims (5)

(correction) A signal network data composition method applied to an asynchronous transfer mode switching system, A first step of constructing a separate signal network data pointer assignment table from a signal network related database with a separate pointer identifying a signal network element; A second step of adding signal network information to a signal network information relation of a database by allocating a new pointer from the signal network data pointer allocation table when adding information according to a request for adding signal network information during operation; And A third step of deleting the signal network information of the database and deleting the pointer allocation state from the signal network data pointer allocation table when deleting the information according to the request for deleting the network network information during operation; Signal network data configuration method using a data allocation table comprising a. (newly open) The method of claim 1, The first step is, A fourth step of the asynchronous delivery mode switching system initializing the signal network data pointer assignment table to configure a separate signal network data pointer assignment table from a signal network related database with a separate pointer identifying a signal network element; A fifth step of checking whether a tuple exists by sequentially searching signal network information defined from the signal network information relation and indicating a corresponding signal network data pointer position of the signal network data pointer allocation table as a corresponding identifier; And A sixth step of configuring the signal network data pointer allocation table by repeating the fifth step until a database search state indicates that there are no more defined tuples; Signal network data configuration method using a data allocation table comprising a. (newly open) The method according to claim 1 or 2, The second step, A seventh step of obtaining an unassigned signal network data pointer by examining the signal network data pointer assignment table when the asynchronous delivery mode switching system receives a request for adding network information from the operator during operation; An eighth step of adding the obtained signal network data pointer and signal network information input from an operator to a signal point information relation; And A ninth step of displaying a corresponding signal network data pointer position of the signal network data pointer allocation table by a corresponding identifier; Signal network data configuration method using a data allocation table comprising a. (newly open) The method of claim 3, wherein The third step, A tenth step of deleting the input signal network information from the signal network information relation when the asynchronous delivery mode switching system receives a signal network information deletion request from the operator during operation; And An eleventh step of indicating a location of a corresponding signal network data pointer in the signal network data pointer assignment table by using a corresponding identifier; Signal network data configuration method using a data allocation table comprising a. (newly open) The method of claim 4, wherein The signal network element, Signal network data construction method using a data allocation table comprising a signal link and a signal point.