KR20010056726A - Virtual Signaling Point Materialization Method For Global Title Translation Of Signaling Transfer Point In No.7 Signaling Network - Google Patents

Abstract

PURPOSE: A method for realizing a virtual signaling point for translating a global title of a signaling transfer point in a No. 7 signal network is provided to take partial charge of load for translating global title between a signaling end point and signaling transfer points by registering the signaling transfer points or each service group providing an intelligent network service as virtual signaling points. CONSTITUTION: A virtual signaling point registration command and parameter are received from an operator(S71). It is confirmed whether the other command related to an SCCP is being performed(S72). If the state of a database management system is normal and the other command is not being performed, the effectiveness of virtual signaling point information is confirmed(S73). If the effectiveness of virtual signaling point information is effective, the corresponding virtual signaling point information is stored in database for registration(S74). A global title translation is requested to the virtual signaling point for performing global title routine to an intelligent network service.

Description

Virtual Signaling Point Materialization Method For Global Title Translation Of Signaling Transfer Point In No.7 Signaling Network}

The present invention relates to a virtual signal point implementation method for the overall name translation of signal relay points in No.7 signal network, and in particular, after registering a plurality of signal relay points as one virtual signal point, The present invention relates to a virtual signal point implementation method for general name translation of a signal relay point in No.7 signal network capable of providing an intelligent network service by performing a translation.

In general, the No.7 signaling system, which is a common line signaling system standardized in the telecommunication standardization section of the International Telecommunication Union (hereinafter referred to as 'ITU-T'), provides call connection between subscribers and various communication services or establishes a communication network. As a signaling method for transmitting various control signals for operation management, the No. 7 signal network structure has a signal transmission control and error correction, and security measures for the signal network to increase versatility, as shown in FIG. 1. The MTP (Message Transfer Part), which is a network service division that distributes the data, and the Signaling Connection Control Part (SCCP), and the user unit that is individually designed according to application fields such as telephone exchange and data exchange. It consists of ISUP (ISDN User Part), Question and Answer Capability (TCAP) and Telephone User Part (TUP). It comprises a mobile communication network and an intelligent network user unit (not shown).

Here, the corresponding message transfer unit (MTP) performs a function of transmitting a signal message transmitted and received between the signal points of the No. 7 signal network, as shown in the accompanying Figure 2, the signal traffic transmission and the user portion distribution The signal message processor 20 performing the function and all the specifications included in the signal network, that is, the signal link, the signal link set, the signal point, and the signal routes, are used efficiently for the reliable signal message transmission. It consists of a signal network management unit 10 for maintaining the consistency of the relationship between them and performs a signal network shape management function.

In addition, by using a signal link for separating and transmitting only control signals for various control separately from a transmission line (communication line) for transmitting voice or data, the signal processing speed is improved, and the calling and receiving subscribers Various signal contents can be processed into one signal unit, and the length of the corresponding signal unit can be set variably according to the data amount.

As shown in FIG. 3, the conventional No. 7 signal network connects a signaling point (SP) for transmitting, receiving, or transmitting a signal message generated by a user, and a corresponding signal point. Signaling link (SL), which is a logical information transmission path, which has a signaling relay point (STP) for transmitting a message for sending or receiving a signaling message. An endpoint includes an originating point (OP) that generates a signaling message and a destination point (DP) that is a destination of the signaling message.

The set of corresponding signal links is called a signaling link set (LS), and a path for delivering a message to a signaling point is called a signaling route (SR), which is a routing path for one signal destination point. The set of signal routes is called a signal route set. The No. 7 signal network is composed of the above-described signal network specifications, that is, the data points for the signal point, the signal link, the signal link set, and the signal route, and are generated by the origin point. The signaling message is delivered through a specific signal link of a signal link set destined for a called point (called routing) to perform a call connection and a service request.

Meanwhile, in the conventional No. 7 signal network as described above, in order to provide more various services to the subscribers, the service information of the subscriber is stored in a central large database, and then the database is queried for the service request of the subscriber. An intelligent network service that provides a service is provided. Examples of the intelligent network service include a freephone service in which a called subscriber pays a telecommunication fee, and a credit card calling service in which a credit card is used for a telecommunication fee. And a virtual private network service, in which a plurality of subscribers designate one service group to provide a communication service such as using a private private network.

At this time, each network operator is designing a signal network with a duplicated structure of a database having the same service information in order to increase service productivity of the above-mentioned database in its own network and to protect the service from signal network failure.

The intelligent network service is performed through a global title translation representing a service, and the global title translation is performed at a signal endpoint, which is a service performing point of a toll or tandem level that processes a real intelligent network call. This requires information such as SCCP signaling points, subsystems, generic name routing, global title addresses, the format or interpretation of the generic name stored, and how to translate the global title.

And, the signal message according to the global title translation result performed by the service performing point is transmitted to the service control point through the signal relay point and processed, but as the global name translation is performed by the service performing point that is processing the actual intelligent network call Activation and congestion of intelligent network service The problem of increasing the load on the processing of intelligent network service and the processing of information necessary for the overall title translation appear. There is a problem in that there is an inefficient signal network structure for performing a global name translation by transmitting a message.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object thereof is to register a signal relay point existing in pairs with respect to a signal endpoint or each service group providing an intelligent network service as a virtual signal point, and corresponding virtual signal. By performing the global title translation at the point, the load sharing for the global title translation is possible between the corresponding signal endpoint and the signal relay point.

Another object of the present invention is to register a plurality of signal relay points as one virtual signal point to perform a global name translation, so that even if a failure occurs in any one signal relay point belonging to the corresponding virtual signal point, To provide a lossless intelligent network service.

1 is a structural diagram of a general No. 7 signal network.

2 is a block diagram illustrating a function of a message transfer unit in FIG. 1;

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

4 is a structural diagram of No. 7 signal network having a predetermined virtual signal point in the present invention;

Figure 5 is a structure diagram of No.7 signal network when different operators are interworking SCCP through the gateway in the present invention.

FIG. 6 is a structure diagram of No. 7 signal network when a failure occurs in any signal relay point belonging to a virtual signal point in the present invention. FIG.

7 is a flowchart illustrating an operation of defining a plurality of signal relay points as virtual signal points in No. 7 signal network according to the present invention;

8 is a flowchart illustrating an operation of managing a state change of a virtual signal point according to restriction information on a signal point associated with the virtual signal point in the No. 7 signal network according to the present invention;

9 is a flowchart illustrating an operation of managing a state change of a virtual signal point according to restriction information on a subsystem related to the virtual signal point in the No. 7 signal network according to the present invention.

Explanation of symbols on the main parts of the drawings

SSP: Service Execution Point SCP: Service Control Point

VSP: Virtual Signal Point LSTP: Signal Relay Point

RSTP: Remote Signal Relay Point

A feature of the present invention for solving the above object is a process of defining a plurality of signal relay points adjacent to the signal endpoint as a virtual signal point; The present invention provides a method for implementing a virtual signal point for a global title translation of a signal relay point in a number.7 signal network, which includes a process of performing a global name routing for an intelligent network service by requesting a global name translation as the virtual signal point.

The defining of the plurality of signal relay points as virtual signal points may include: receiving a virtual signal point registration command and a parameter from an operator; Checking the validity of the virtual signal point information received as the parameter; And storing the virtual signal point information confirmed to be valid in a database and registering the virtual signal point information, wherein the virtual signal point definition defines a signal relay point existing as a pair as a single virtual signal point or an intelligent network service. It is characterized by defining a different virtual signal point for each service group providing a.

The present invention further includes a process of managing a state of the virtual signal point according to a state change of an SCCP signal point or a subsystem performing a service, wherein the process of managing the state of the virtual signal point comprises: a virtual signal point Managing a state of the virtual signal point according to the restriction information on the signal point associated with the; And managing the state of the virtual signal point according to the restriction information for the subsystem related to the virtual signal point.

Here, in the managing of the state of the virtual signal point according to the restriction information on the signal point, when the restriction information on the signal point is received from the MTP, the state change of the virtual signal point associated with the signal point from which the restriction information is received Checking whether it occurs; When the state change of the virtual signal point occurs, transmitting a prohibition of transmission or a permission to transmit message to each signal endpoint, wherein the related destination is a virtual signal point; And storing the state information of the virtual signal point whose state has been changed. The step of transmitting the prohibition or transfer permission message to each signal end point may include limiting information on the signal point being inaccessible information. In the case of transmitting a prohibition message, and if the restriction information on the signaling point is accessible information, the delivery permission message is transmitted.

Furthermore, in the managing of the state of the virtual signal point according to the restriction information on the subsystem, when the restriction information about the subsystem is received from the MTP, the state change of the virtual signal point related to the subsystem in which the restriction information is received is changed. Checking whether it occurs; When the state change of the virtual signal point occurs, transmitting a prohibition of transmission or a permission to transmit message to each signal endpoint, wherein the related destination is a virtual signal point; And storing the state information of the changed state of the virtual signal point, wherein the transferring of the prohibition of transmission or the transfer permission message to each signal end point includes: a restriction information on the subsystem is a subsystem prohibition message. In the case of, the transfer prohibition message is transmitted. When the restriction information on the subsystem is a subsystem allowance message, the transfer allowance message is transmitted.

Further, in the process of performing a global title routing for an intelligent network service by requesting a global title translation to the virtual signal point, load sharing is required by each of the signal relay points belonging to the virtual signal point, and the global name translation is required. When a transmission prohibition message for a signal relay point is received due to a change in state of the system, the request for translation of the global name translation to the signal relay point is bypassed to a signal relay point in a normal state.

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

In the present invention, in order to commercialize various types of intelligent network services to provide more efficiently to a plurality of subscribers, overall title translation is performed at a signal relay point instead of at a signal endpoint, which is a service performing point of a long distance or tandem hierarchy. Signal endpoints do not perform global title translations for intelligent network calls, but because they require signaling of global titles by passing signal messages to signal relay points, it is not necessary to manage service information necessary for global title translations.

In addition, the signal relay points that exist in pairs for the corresponding signal endpoints are identified as one virtual signal point to share the load for the global title translation, and any one of the signal relay points that occurs due to an intelligent network service failure or belongs to the virtual signal point. In case of a failure in the global title translation function, it bypasses other signal relay points to prevent the loss of signaling messages.

On the other hand, the virtual signal point implementation for the global name translation of the signal relay point in the No.7 signal network according to the present invention defines a signal relay point present in pairs with respect to the signal end point as a virtual signal point Or, consider multiple SCCP addresses that provide intelligent network services as one service group, define different virtual signal points for each service group, register them with the corresponding signal relay points, and then move from the corresponding signal endpoints to the virtual signal points. By transmitting the global title translation request message, that is, a signal message requesting the global title translation, the global title translation service for the intelligent network service is provided at each signal relay point defined as the virtual signal point.

In other words, by recognizing a virtual signal point as a signal point connected to a pair of signal relay points at the corresponding signal endpoint and designating a signal route, two adjacent signal relays for a signal message requiring a global name translation routed to the corresponding virtual signal point It is possible to divide the load into points, and by providing a global title translation service at each signal relay point that receives the signal message, that is, the redundant signal relay point, it is possible to improve the use efficiency of the signal network. It is possible to guarantee the intelligent network service without loss from the signal network failure.

For example, as shown in FIG. 4, when a signal message traffic related to the global title translation is processed for an intelligent network service in a No.7 signal network structure having a predetermined virtual signal point (VSP), a service that is a signal endpoint is performed. The point (SSP) transmits a signal message based on the translation result of the global title to only one of the duplicated service control points (SCP1 and SCP2) that are currently available for service, so that the neighboring signal can be provided. In connection with the relay points LSTP1 and LSTP2, a global title translation is required as a virtual signal point VSP.

That is, the service execution point (SSP) does not require the translation of the generic name to the adjacent signal relay points (LSTP1, LSTP2), respectively, and registers it as one virtual signal point (VSP) to the corresponding virtual signal point (VSP). You will be asked to translate the global title.

In this case, the service execution point SSP alternately transmits a signaling message through each signal route so that each signal relay point LSTP1 and LSTP2 belonging to the virtual signal point VSP is divided by 50%. Adjacent signal relay points LSTP1 and LSTP2 that have received a signal message to be routed to the signal point VSP each perform a global name translation as if the signal message were received from the local signal point, thereby providing the respective remote signal relay points ( Through RSTP1 and RSTP2, signaling messages are delivered to the final service control points (SCP1 and SCP2).

In addition, as shown in FIG. 5, when different operators perform SCCP interworking through a gateway station, adjacent signal relaying belonging to the first operator, which is the same operator, is performed at the corresponding service performing point (SSP) as described in FIG. The general name translation is requested to the virtual signal points LVSP representing the points LSTP1 and LSTP2, and as a result of performing the global title translation at the corresponding virtual signal point LVSP, a pair belonging to a second provider, which is a different operator, If it is determined that the global title translation should be requested as a virtual signal point (RVSP) representing the signal relay points (RSTP3, RSTP4), the virtual signal point (RVSP) through the signal relay points (RSTP1, RSTP2) of the corresponding second service provider. In this case, the global title translation is requested. In this case, the general name translation is requested by converting the origin of the signal message requesting the global title translation into a local signal point.

Accordingly, the signal relay points RSTP3 and RSTP4 belonging to the virtual signal point (RVSP) of the second provider are collectively translated into a duplicated service control point (SCP1, SCP2) by translating the signal message whose destination is the virtual signal point in its own country. It will deliver a message.

In addition, as shown in FIG. 6, when a general name translation service is not available from one signal relay point LSTP2 belonging to a virtual signal point VSP to service control points SCP1 and SCP2, that is, the corresponding signal relay point If the signal route from (LSTP2) to the remote signal relay points (RSTP1, RSTP2) and the other signal relay point (LSTP1) is not available, the prohibition message for the corresponding virtual signal point (LSTP2), that is, the service control point ( Signaling traffic to the Virtual Signaling Point (VSP) is now available by passing a Prohibition Message to the Service Execution Point (SSP) for the Signal Relay Point (LSTP2) where the signal route to SCP1, SCP2 is unavailable. Switch to the signal relay point LSTP1 in the state.

Therefore, by processing the signal message traffic that needs to be collectively translated from the service execution point (SSP) to the service control point (SCP1, SCP2) at the available signal relay point (LSTP1) belonging to the virtual signal point (VSP), the signaling network It will be able to provide continuous intelligent network service even in the event of a failure.

Implementing a virtual signal point for general name translation of a signal relay point in No. 7 signal network as described above may include defining and deleting a plurality of signal relay points adjacent to the signal endpoint as one virtual signal point; It includes the process of managing the state change of the virtual signal point and the process of processing the signal message traffic for the global title translation through the virtual signal point.

First, in the process of defining and deleting a plurality of signal relay points as one virtual signal point, a plurality of signal relay points are defined as one virtual signal point by analyzing virtual signal point registration commands and parameters input by an operator. And the process of deleting the virtual signal point defined according to the operator's command, and the virtual signal point defines a signal relay point that exists in pairs as one virtual signal point, or provides an intelligent network service. Different virtual signal points are defined for a plurality of signal relay points forming a service group.

Here, the process of defining a plurality of signal relay points as one virtual signal point will be described in detail with reference to FIG. 7.

The virtual signal point registration command and parameters are input from the operator (step S71), and the corresponding virtual signal point is defined and registered by analyzing the received command and parameters. First, whether other commands related to the SCCP specification are being performed. If the status of the database management system is normal when no other command is being executed (step S72), the validity of the virtual signal point information input as a parameter is checked (step S73).

That is, whether the local signal point information to which the virtual signal point input as the corresponding parameter belongs is defined in the database, whether the corresponding virtual signal point is the same as the predefined local signal point, and the virtual signal point is the same as the predefined station signal point. And the validity is checked by checking whether there is a global title routing case inputted as a corresponding parameter. In this case, when the virtual signal point information inputted as the corresponding parameter is confirmed to be valid, the corresponding virtual signal point The information is stored in the database and registered (step S74).

However, if the local station signal point information to which the corresponding virtual signal point belongs is not defined in step S73, or is identical to the predefined local station signal station or the station signal point, or if there is no overall name routing case, the virtual input received as the corresponding parameter. Since the signal point information is invalid, the virtual signal point definition operation is terminated after notifying the operator of the command failure.

Secondly, the process of managing the state change of the corresponding virtual signal point may load-sharing a signal message requiring global name translation at the signal endpoint for the virtual signal point defined by the virtual signal point definition operation described above. At the same time, by managing the state change of the virtual signal point to enable the global name translation without loss of the signaling message when the intelligent network service of the service control point and the general name translation function of the signal relay point fail, SCCP signaling point or service When the state change of the virtual signal point occurs due to the state change of the subsystem, the state change of the virtual signal point is transmitted to the signal end point, so that load sharing is possible between the corresponding signal end point and each signal relay point belonging to the virtual signal point. Lose.

On the other hand, the process of managing the state change of the virtual signal point, the process of managing the state change of the virtual signal point according to the restriction information (accessible / accessible) for the signal point associated with the virtual signal point, and the virtual signal It includes the process of managing the state change of the corresponding virtual signal point according to the restriction information (ban or allow message) for the subsystem related to the point.

First, a process of managing a state change of the virtual signal point according to the restriction information on the signal point associated with the virtual signal point will be described in detail with reference to FIG. 8.

When the SCCP that performs the virtual signal point management receives the restriction information on the signal point from the MTP (step S81), it is checked whether or not a virtual signal point associated with the signal point at which the restriction information has been received exists (step S82). If a signal point exists, it is checked whether a state change of the virtual signal point occurs (step S83).

At this time, when a state change of the corresponding virtual signal point occurs, a transfer prohibition or transfer permission message using the related destination point as the virtual signal point is transmitted to each signal end point (step S84), whereby When the state information is stored (step S85), if the restriction information on the signal point received from the MTP is inaccessible information, the transfer prohibition message is transmitted, and the restriction information on the signal point is accessible information. In the forwarding permission message.

Next, a process of managing a state change of the virtual signal point according to the restriction information on the subsystem related to the virtual signal point will be described in detail with reference to FIG. 9.

When the SCCP that performs the virtual signal point management receives the restriction information on the subsystem from the MTP (step S91), it is checked whether or not a virtual signal point associated with the subsystem in which the restriction information has been received exists (step S92). If a signal point exists, it is checked whether a state change of the virtual signal point occurs (step S93).

At this time, when a state change of the corresponding virtual signal point occurs, by transmitting a prohibition of transmission or a permission message to allow each signal end point to use the related destination as the virtual signal point (step S94), When the status information is stored (step S95), when the restriction information on the subsystem received from the MTP is a subsystem prohibition message, a propagation prohibition message is transmitted, and the restriction information on the subsystem is a subsystem permission message. In case of, forwarding message is delivered.

As a result, the signal endpoint transmits a signal message requesting the global title translation by sharing the load among each signal relay point belonging to the virtual signal point, but transmitting to any one signal relay point due to the change of state of the signal point or subsystem. When receiving the prohibition message, it is possible to prevent the loss of the signal message by bypassing the signal message to the signal relay point in the normal state.

Third, the process of processing the signaling message traffic for the global title translation through the corresponding virtual signal point is a function to request the global title translation to the virtual signal point to perform the global name routing for the intelligent network service, SCCP message If is received, it is checked whether the corresponding SCCP message is to perform a global name translation.

In this case, when the global title translation is to be performed, the global title translation is performed by using the global title address included in the destination address of the SCCP message, and then the global title routing case in which the routing information is stored is searched. .

In this case, when it is determined that the general name routing case corresponding to the signal relay point defined as the virtual signal point is performed as a result of the general name translation, the general message name routing is performed to process the corresponding signal message.

However, if it is determined that the message is to be delivered to the signal point of another network operator as a result of performing the global title translation, after generating the SCCP message that is the global title translation request message, the origin of the SCCP message is actually identified. Routing is performed by converting to the local signal point.

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 registers each service relaying point or pair of service groups providing an intelligent network service as a virtual signal point, and performs global title translation at the corresponding virtual signal point. Load sharing for global title translation is possible between the signal endpoint and the signal relay.

In addition, by registering a plurality of signal relay points as one virtual signal point to perform a global name translation, even if a failure occurs in any one signal relay point belonging to the virtual signal point translation of the global name to another signal relay point It is possible to perform, thereby providing an intelligent network service without loss of signaling messages.

Claims (11)

Defining a plurality of signal relay points adjacent to the signal endpoints as one virtual signal point; And a process of performing a global name routing for an intelligent network service by requesting a global name translation as the virtual signal point. A virtual signal point implementation method for global name translation of a signal relay point in a seven signal network. The method of claim 1, The process of defining the plurality of signal relay points as virtual signal points includes: receiving a virtual signal point registration command and a parameter from an operator; Checking the validity of the virtual signal point information received as the parameter; And storing the virtual signal point information confirmed to be valid in a database, and registering the virtual signal point information. A method for implementing a virtual signal point for general name translation of a signal relay point in a seven signal network. The method according to claim 1 or 2, The virtual signal point definition may define a signal relay point existing as a pair as one virtual signal point, or define different virtual signal points for each service group that provides an intelligent network service. An implementation method of virtual signal point for general name translation of signal relay point in signal network. The method of claim 2, The checking of the validity of the virtual signal point information input as the parameter may include whether local signal point information to which the virtual signal point input as a parameter belongs is defined in the database, and the local signal point or the power station in which the virtual signal point is defined. A method of implementing a virtual signal point for a global title translation of a signal relay point in a seven signal network, characterized in that the validity is checked by checking whether there is a generic name routing case inputted as the parameter and whether the generic name routing case is present. The method of claim 1, And a process for managing the state of the virtual signal point according to the state change of the SCCP signal point or the subsystem performing the service. The virtual signal for general name translation of the signal relay point in the seven signal network How to implement points. The method of claim 5, The managing of the state of the virtual signal point may include managing the state of the virtual signal point according to the restriction information on the signal point associated with the virtual signal point; A number comprising the steps of managing the state of the virtual signal point according to the restriction information on the subsystem associated with the virtual signal point. Virtual signal point implementation method for the overall name translation of the signal relay point in the seven signal network . The method of claim 6, In the managing of the state of the virtual signal point according to the restriction information on the signal point, if the restriction information on the signal point is received from the MTP, whether the state change of the virtual signal point associated with the signal point at which the restriction information is received occurs. Confirming; When the state change of the virtual signal point occurs, transmitting a prohibition of transmission or a permission to transmit message to each signal endpoint, wherein the related destination is a virtual signal point; And storing the state information of the virtual signal point whose state has been changed. A virtual signal point implementation method for global name translation of a signal relay point in a seven signal network. The method of claim 7, wherein The transmitting of the prohibition or permission of delivery message to each signal end point may include transmitting a prohibition message when the restriction information on the signal point is inaccessible information, and the restriction information on the signal point is accessible information. And a case where the transfer permission message is transmitted. A virtual signal point implementation method for global title translation of a signal relay point in a seven signal network. The method of claim 6, The managing of the state of the virtual signal point according to the restriction information on the subsystem may include determining whether a state change of the virtual signal point associated with the subsystem in which the restriction information is received when the restriction information about the subsystem is received from the MTP. Confirming; When the state change of the virtual signal point occurs, transmitting a prohibition of transmission or a permission to transmit message to each signal endpoint, wherein the related destination is a virtual signal point; And storing the state information of the virtual signal point whose state has been changed. A virtual signal point implementation method for global name translation of a signal relay point in a seven signal network. The method of claim 9, The forwarding prohibition or propagation permission message is transmitted to each signal endpoint, when the restriction information for the subsystem is a subsystem prohibition message, the propagation prohibition message is transmitted, and the restriction information for the subsystem allows the subsystem. And a message for allowing the transfer of the message. In the case of a message, a virtual signal point implementation method for global title translation of a signal relay point in a seven signal network. The method of claim 1, In the process of performing a global title routing for an intelligent network service by requesting a global title translation to the virtual signal point, the overall name translation is required by allocating load to each signal relay point belonging to the virtual signal point, When a transmission prohibition message for a signal relay point is received due to a change in state, the number of signal relay points in the seven signal network is bypassed. How to implement virtual signal point for global title translation.