KR100325386B1 - Signaling Connection Control Part Message Routing Method In No.7 Signaling Network - Google Patents

Abstract

The present invention provides a virtual signal point code by grouping signal points related to the same service, thereby distributing signal traffic during routing of a message connection control unit message at a constant rate with respect to available signal points. Signal connection control message routing method.

In the conventional No.7 signal network, it is difficult to load balance the signal traffic when performing the signal routing control message routing, and it is inconvenient to manage additional information on the signal network when interworking with the signal points of other companies' signal networks. There is a drawback of inefficient operation and maintenance.

The present invention includes a virtual signal point code defined by grouping signal points related to the same service when routing a message connection control unit message in No.7 signal network in the destination address of the signal message, thereby performing the corresponding virtual signal without performing global title translation. By translating the point codes, the signal traffic can be distributed at a constant rate.

And when interworking with other companies' signal network, even if the network information of any one operator's signal network is changed, it is possible to route the corresponding signal connection control part message with minimal information change, thereby utilizing, operating and maintaining the corresponding No.7 signal network. The ease of use can be improved.

Description

No.7 Signaling Network in Signaling Connection Control Part Message Routing Method in Seven Signaling Network

The present invention relates to a signal routing controller message routing method in No.7 signaling network. In particular, the present invention relates to a signal routing controller message routing method by assigning virtual signal point codes by grouping signal points related to the same service. The present invention relates to a message routing control message routing method in No. 7 signal network that can be distributed at a constant rate with respect to a point.

In general, in No.7 signal network, one or more independent signal routes are defined for each signal point, and signal message routing is managed according to the state of the corresponding signal route, so that each signal point has no signal route. It was not possible to transmit the signal message (traffic) of, and when adding a specific signal point, it had to assign and manage a new signal route for the specific signal point added to all related signal points.

On the other hand, the conventional No. 7 signal network is configured as shown in Figure 1 attached, the signal point A is a service switching point (SSP; Service Switching Point) for connecting the service users, the corresponding signal points F, G Is a service control system (SCP) that manages the entire process of service processing, and corresponding signal points B, C, D, and E are signals of a signaling relay point (STP) that performs a relay function of a signaling message. Perform the function.

In such a No.7 signal network, all signal link sets are available, and signal points F and G are assumed to have control information for the same service by a Signaling Connection Control Part (SCCP). The SCCP message routing operation performed is as follows.

First, when SCCP message routing is performed using signaling point and subsystem information at signaling point A, a routing label of the signaling message is transmitted to signaling point F or G to obtain control information for a specific service. In addition, at the signaling point F or G, the SCCP message including the service control information is transmitted to the signaling point A.

That is, SCCP message routing according to signaling point and subsystem is based on the SCCP message based on the subsystem number by signaling the signal point code information for the signal point F or G to obtain control information for a specific service in the SCCP user part of the signaling point A. In the Called Party Address field, the SCCP message routing unit transmits the signal point code information included in the called address field to the corresponding signal point. send.

Second, when SCCP message routing is performed by the global title translation, when the SCCP message delivery request including the global title is requested, the translation of the global title is performed at the signal point that translates the global title and the resulting signal point code information. Is transmitted as a routing label of a signaling message, and according to the signal point performing the global title translation, three broad name translations are performed at the signal point A, which is a service exchange, and the signal point B, which is a signal relay exchange. When the global title translation is performed in C, D, and E, and the global title translation is performed in both the service exchange and the signal relay exchange, the following description will be made.

When SCCP message routing is performed by translating the generic name at signaling point A, which is the corresponding service exchange, in the destination address field of the SCCP message based on the generic name in the SCCP user part of the signaling point A to obtain control information for a specific service. If information on the global title is requested to be delivered to the SCCP message routing section, the SCCP message routing section translates the global title included in the destination address field, and then receives the signaling point code and the subsystem number indicated according to the translation result. The routing label of the address and signal message is transmitted to the corresponding signal point.

When SCCP message routing is performed by translating the global title at the signaling relay exchange, the SCCP user part at the signaling point A is assigned to the global address in the destination address field of the SCCP message based on the global title to obtain control information for a specific service. If the request is forwarded to the SCCP message routing unit by including information about the SCCP message routing unit, the SCCP message routing unit translates the global title at the signaling relay switch, so that the global relay name contained in the destination address field is not translated. Send the corresponding SCCP message to the exchange.

When SCCP message routing is performed by translating the global title at the corresponding service exchange and signaling relay exchange, the SCCP user part of the corresponding signaling point A is inputted in the destination address field of the SCCP message based on the global title to obtain control information for the specific service. When requesting delivery to the SCCP message routing unit by including the information on the global title, the SCCP message routing unit first translates the global title included in the destination address, and then receives the signal point code and the subsystem number indicated according to the translation result. It is transmitted as a routing label of an address and a signal message to a corresponding signal relay exchange, and includes information on a general name to perform secondary translation in the signal relay exchange.

At this time, the SCCP message routing part of the signal relay exchange receives the message and secondly translates the global title included in the destination address, and then routes the destination address and signaling message to the signal point code and subsystem number indicated according to the translation result. The label is transmitted to the corresponding signal point.

As described above, in the conventional No. 7 signaling network performing the SCCP message routing operation, the following problem may be raised when the corresponding SCCP message routing is performed.

First, in case of SCCP message routing according to signaling point and subsystem, it is difficult to implement load balancing from the SCCP level to the service control system, and in case of failure of the corresponding service control system, the loss of signaling messages may occur. If the control system belongs to different operators, it is easy to expose the information about the signal network of the other company, and when the network information (signal code, etc.) of the signal network of the other company is changed, the changed network information for the relevant signal point of the company's signal network There is a hassle to reflect every time.

On the other hand, if SCCP message routing is performed by performing global title translation only at the service exchanger, it is difficult to maintain this information because it is necessary to change the general title information of the new service added to all relevant endpoints when adding a new service. In the case of interworking with the signal point of the network, the information on the signal network of the third party is easy to be exposed, and when changing the network information of the other company's signal network, it must reflect the changed network information for the relevant signal point of the company's signal network every time. This is cumbersome and requires additional functionality for load balancing from the service exchanger to the service control system.

When SCCP message routing is performed by performing the global title translation at the service exchange and the service relay exchange, an additional function for load balancing is required for the global title translation at the corresponding service exchange.

That is, in case of performing SCCP message routing in the conventional No.7 signal network, it is difficult to load balance the signal traffic, and it is inconvenient to manage additional information on the signal network when interworking with the signal points of the third party signal network. There is a drawback of inefficient operation and maintenance.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide a virtual signal point code defined by grouping signal points related to the same service when routing a signal connection control unit message in No. 7 signal network. The present invention provides a signal routing control message routing method in a No.7 signal network that can translate a virtual signal point code without performing global title translation to distribute signal traffic at a constant rate.

Another object of the present invention, even when the network information of any one carrier signal network is changed when interworking with the signal network to enable the corresponding signal connection control unit message routing with a minimum of information change the utilization of the No. 7 signal network And to improve the ease of operation and maintenance.

1 is a schematic configuration diagram of a general No. 7 signal network.

2 is a schematic configuration diagram of a No. 7 signal network according to the present invention;

3 is a diagram illustrating a protocol structure of a No. 7 signal network.

4 is an operation flowchart for implementing a signal connection control unit message routing method in No. 7 signal network according to the present invention;

5 is a diagram illustrating a destination address of a signal connection control unit message according to the present invention;

Explanation of symbols on the main parts of the drawings

MTP: Message Transfer Part

SCCP: Signaling Connection Control Part

TCAP: Transaction Capability Application Part

ISUP: ISDN User Part, ISDN User Part

TUP: Telephone User Part

A feature of the present invention for achieving the above object is, in the signal routing control message routing method of the number 7 signal network, SCCP user part of the service exchange to deliver the SCCP message routing unit to the SCCP message routing unit to obtain service control information Requiring a process; Checking whether a signaling point code is a virtual signaling point code by searching for a destination address of the message requested by the SCCP message routing unit; Translating the virtual signal point code in the SCCP message routing unit if the verification result is a virtual signal point code; And performing SCCP message routing based on the signal point / subsystem indicated as a result of the translation of the virtual signal point code.

In another aspect of the present invention, a number of different service provider signal network interworking to perform a service. In the signal connection control message routing method in the seven signal network, the signal relay switch associated with the same service of the interworking third party signal network Grouping and assigning a virtual signal point code; Including the virtual signaling point code in the SCCP user part of the service exchange requesting an SCCP message routing part to the SCCP message routing part; Translating the virtual signaling point code included in the destination address of the message requested by the SCCP message routing unit; Requesting the SCCP message routing from the SCCP message routing unit to a signal relay switch of a corresponding third party signaling network according to a signal point / subsystem and a general name indicated as a result of the translation of the virtual signal point code; Translating the global title included in the destination address of the message requested by the signal relay exchange of the third party provider's signaling network; And performing the SCCP message routing based on the signal point / subsystem resulting from the translation of the global name in the signal relay switch of the third party signal network.

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

A schematic configuration of the No. 7 signal network for explaining the SCCP message routing method using the virtual signal point code in the No. 7 signal network according to the present invention is shown in FIG. 2.

In this case, the virtual signal point code 'X' is assigned to the signal points B and C which are the signal relay exchanges, and the virtual signal point code 'Y' is assigned to the signal points F and G as the service control system. In the present invention, the SCCP signal traffic generated at the signaling point A can be distributed to the signaling points of one or more related signaling point groups using the virtual signaling point code without performing the translation of the overall title.

On the other hand, the protocol structure of the No. 7 signal network, as shown in Figure 3 attached to the telephone user part (TUP; Telephone User Part) in charge of signal processing required for telephone call control, and ISDN voice and non-voice applications An ISDN User Part (ISUP) that provides circuit switched services and supplementary services for the service, and a TCAP (Transaction Capability Application), which is a kind of SCCP user part that provides connectionless related intelligent network services between communication network elements. Part 1), a signal connection control unit (SCCP), which is a type of message routing unit that provides logical signal connection control and signal data transmission capability in a network, and at level 1, which performs a signal data connection function and a signal message transmission and processing function. It consists of a message transfer part (MTP) up to level 3.

The SCCP message routing operation in the No. 7 signal network according to the present invention configured as described above will be described with reference to FIG. 4.

First, the SCCP user part of the service switcher requests signaling of the signaling message to the SCCP message routing part in order to obtain service control information (step S41). At this time, the destination address of the message requested by the corresponding SCCP user part has a number of associated with the service. It will include a virtual signal point code for the signal relay switch or the service control system.

On the other hand, the SCCP message routing unit that has received the corresponding signaling message transfer request searches for a routing indicator belonging to the destination address of the corresponding message to check whether the SCCP message routing is performed according to the signaling point / subsystem (step S42).

At this time, the destination address part of the SCCP message is composed of an address display part and an address as shown in FIG. 5A, and the address address part is a signal point code, a subsystem number, a general name, and a routing as shown in (B). And an indication unit for the display unit, and the corresponding address includes a signal point code, a subsystem number, and an address for a general name.

In step S42, if the routing display portion of the called address portion is SCCP message routing according to the signal point / subsystem, it is checked whether the signaling point code of the called address portion is the virtual signal point code (step S43), If the SCCP message routing unit performs the corresponding virtual signal point translation (step S44), checks whether the virtual signal point translation is successful (step S45), and if the virtual signal point translation is successful, the signal point / subsystem indicated as the translation result SCCP message routing in accordance with the step (step S46).

Subsequently, it is checked whether the corresponding SCCP message routing is successful (step S47). If the corresponding SCCP message routing is successful, the flow returns to step S41 to wait for a new SCCP message delivery request.

However, in step S43, if the signal point code of the destination address portion is not a virtual signal point code, that is, the actual signal point code, perform the operation of step S46 for performing SCCP routing according to the corresponding signal point / subsystem. do.

On the other hand, if the routing display unit of the destination address in the step S42 is not the SCCP message routing according to the signaling point and the subsystem, that is, the SCCP message routing according to the general name, the SCCP message routing unit translates the general name (step S48). (Step S49), if the overall title translation is successful, the operation of step S46 is performed to perform the SCCP message routing according to the signal point / subsystem indicated as the translation result.

On the other hand, if the translation of the virtual signal point fails in step S45, the translation of the global title in step S49, or the routing of the SCCP message fails in step S47, the SCCP message routing unit discards or returns the signaling message. (Step S50), it returns to step S41 and waits for a new SCCP message delivery request.

In order to perform the SCCP message routing as described above, all signal link sets of the corresponding No. 7 signal network must be available, and the SCCP user part of the service exchange requesting the signaling message delivery to the SCCP message routing part to obtain service control information. The virtual address point code should be included in the destination address. The virtual signal point code is a virtual signal point code 'X' defined by grouping signal points B and C, which are signal relay exchanges related to the same service, or related to the same service. It includes 'Y' which is a virtual signal point code defined by grouping signal points F and G which are service control systems.

The virtual signal point code 'X' is a case of operating the signal network in the form of performing a global title translation in the signal relay exchange, which is used when interworking with the signal network of other company, and the virtual signal point code 'Y' It is used when operating the signal network without using the overall name in the operator's signal network.

The SCCP message routing unit translates the virtual signal point code to perform the SCCP message routing. The virtual signal point translation uses the virtual signal point code and the subsystem number. As a result of the translation, the actual signal is translated. Point codes and subsystem numbers are obtained, and the signal traffic is distributed according to a constant load balancing ratio to the actual signal points within the corresponding virtual signal points, and in case of failure of any one of the actual signal points, only the steady state signal points are used. Signal traffic.

In this case, as a result of the corresponding virtual signal point translation, a general name may be obtained in addition to the actual signal point code and the subsystem number, which uses the signal relay exchange as the virtual signal point, and performs the global name translation in the corresponding signal relay exchange. Appears when operating the signal network in the form.

That is, when different service provider signal networks interwork with each other to perform a service, first, a virtual signal point code is assigned by grouping signal relay exchanges related to the same service of the interworking third party signal network.

Subsequently, when the SCCP user part of the service exchanger requests the SCCP message delivery by including the corresponding virtual signaling point code to obtain service control information, the SCCP message routing part uses the virtual signaling point code included in the destination address of the requested message. In addition to the signaling point / subsystem, the overall name is obtained by translating, requiring the transmission of SCCP messages to the signal relay switch of the corresponding third-party signaling network according to the signaling point / subsystem. Will be included.

The signal relay switch of the signaling network of the third-party provider that is requested to deliver the SCCP message from the service exchanger translates the generic name included in the destination address of the requested message, and then the SCCP according to the signal point / subsystem indicated as the translation result. Message routing will be performed.

As described above, in the No. 7 signal network according to the present invention, the signal traffic can be distributed in various forms using a virtual signal point code regardless of whether the SCCP user part uses the overall title when routing the SCCP message. Even if the configuration information of any one operator's signal network is changed while interworking with the network, the corresponding SCCP message routing can be performed with minimal information change. Therefore, the use of the No.7 signal network The ease of use can be improved.

In addition, the embodiments according to the present invention are not limited to the above-described embodiments, and various alternatives, modifications, and changes can be made within the scope apparent to those skilled in the art.

As described above, the present invention does not perform global title translation by including a virtual signal point code defined by grouping signal points related to the same service when routing a message connection control unit message in No. 7 signal network in the destination address of the signal message. This virtual signal point code can be translated without distributing the signal traffic at a constant rate.

And when interworking with other companies' signal network, even if the network information of any one operator's signal network is changed, it is possible to route the corresponding signal connection control part message with minimal information change, thereby utilizing, operating and maintaining the corresponding No.7 signal network. The ease of use can be improved.

Claims (5)

A signal routing controller message routing method in a seven signal network, comprising: requesting an SCCP message routing unit to transmit an SCCP message to obtain service control information by an SCCP user unit of a service exchanger; Checking whether a signaling point code is a virtual signaling point code by searching for a destination address of the message requested by the SCCP message routing unit; Translating the virtual signal point code in the SCCP message routing unit if the verification result is a virtual signal point code; And routing the SCCP message according to the signaling point / subsystem indicated as a result of the translation of the virtual signaling point code. The method of claim 1, And the virtual signal point code is a virtual signal point code defined by grouping a service control system related to the same service. The method of claim 1, In the process of translating the virtual signal point code, when the overall name is obtained as a translation result, the general name is translated and SCCP message routing is performed according to the signal point / subsystem indicated as the overall name translation result. Number routing method of signaling connection control part in Seven Signaling Network. The method of claim 3, wherein And the virtual signal point code is a virtual signal point code defined by grouping signal relay exchanges related to the same service. In the numbering of the signal providers to the service provider network interworking mutually interworking. Providing a virtual signal point code by grouping signal relay exchanges related to the same service of an interworking third party provider's signal network; Including the virtual signaling point code in the SCCP user part of the service exchange requesting an SCCP message routing part to the SCCP message routing part; Translating the virtual signaling point code included in the destination address of the message requested by the SCCP message routing unit; Requesting the SCCP message routing from the SCCP message routing unit to a signal relay switch of a corresponding third party signaling network according to a signal point / subsystem and a general name indicated as a result of the translation of the virtual signal point code; Translating the global title included in the destination address of the message requested by the signal relay exchange of the third party provider's signaling network; Signal routing control message routing in the seven signal network, characterized in that it comprises the step of performing the SCCP message routing in accordance with the signal point / subsystem resulting from the translation of the overall name in the signal relay switch of the third party signal network Way.