KR100876795B1 - Method and system for supplying intelligent network services by soft switch - Google Patents

Abstract

 The present invention relates to a call processing method and apparatus for providing an intelligent network service, wherein a soft switch maintains a connection state with an intelligent network service controller through a first call processing object and is generated through a first call processing object. Can query the number portability database for the routing number for the number portability subscriber. Therefore, according to the present invention, a continuous intelligent network service can be provided to a number portability subscriber without using communication resources of another switching system to access the number portability database.

Soft Switch, Intelligent Network, Number Portability

Description

Method and system for providing intelligent network service using soft switch {METHOD AND SYSTEM FOR SUPPLYING INTELLIGENT NETWORK SERVICES BY SOFT SWITCH}

1 is a block diagram of a system for providing an intelligent network service to a number portability subscriber using a conventional switching system.

2 is a call processing diagram for providing an intelligent network service using a conventional soft switch.

3 is a block diagram of a system for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

4 is a flowchart illustrating a method for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

5 is a call processing diagram for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

The present invention relates to a method and apparatus for providing a subscriber with an intelligent network service in a communication system. More specifically, the present invention relates to a method and system for providing an intelligent network service to a subscriber in a communication system using a soft switch.

The intelligent network service refers to providing a subscriber number service and a call forwarding service in connection with a general public network (PSTN) switch or a soft switch.

For reference, the soft switch is a core device of the Next Generation Network (NGN) and refers to a software-based intelligent exchange device that controls call processing between heterogeneous networks.

The intelligent network includes an intelligent network service control point (SCP) to provide the intelligent network service to the subscriber. The intelligent network service controller performs general control on the intelligent network service provided to the subscriber including the logic of the intelligent network service requested by the subscriber.

However, as Number Protability is recently allowed to communication subscribers, it is necessary to provide the intelligent network service to number portability subscribers. The number portability means that a communication service subscriber can change a carrier while using the existing service without changing a number. The number portability service requires a database containing the routing number of the number portability number of the number portability subscriber. The database is called a Number Protability Data Base (NPDB).

1 is a block diagram of a system for providing an intelligent network service to a number portability subscriber using a conventional soft switch. When an outgoing call is requested from the soft switch 130 according to the intelligent network service, the soft switch 130 provides the intelligent network service to the calling terminal in association with the intelligent network SCP 110.

The soft switch 130 inquires the NPDB 120 of the routing number (RN) of the number portability number (hereinafter referred to as "transport number") of the number portable subscriber and receives the routing number to translate the number of the routing number. The routing is performed according to the result of number translation.

For reference, the number translation is a mobile switching center (MSC) to which the originating call requests the intelligent network service, whether the originating call requires call connection with the number mobile subscriber, or the called party to which the originating call is to be reached. It provides location information of, etc. The number translation may be performed in a number translation unit (not shown).

In addition, the location of the called party can be known by the routing number, which includes information of the mobile switching center to which the called party currently belongs. Therefore, when the soft switch routes an outgoing call according to the routing number information, the call can be connected to the called party.

In order to help understanding, an example corresponding to FIG. 1 will be described. It is assumed that the calling subscriber made a toll free call (a type of intelligent network service) to a number portability subscriber. It is assumed that the number before the number portability of the number portability subscriber is 011-XXX (hereinafter 011) and the number after the number portability is 016-XXX (hereinafter 016). After the number transfer, the mobile network service provider number is 016, but since the user continues to use 011 outside the service provider, the calling subscriber knows the number of the called subscriber as 011.

First, when the calling terminal 160 sends a call (for example, 1541) requesting a toll-free telephone service through the MSC 1, the number translation unit (not shown) in the soft switch 130 returns the number of the calling signal. Perform the translation. It can be seen that the outgoing call requires the toll free telephone service by the number translation. Therefore, the soft switch 130 is connected to the intelligent network SCP 110 to provide a toll-free telephone service to the calling terminal 160. After being connected to the intelligent network SCP (110) can be directly connected to the calling terminal 160 to provide toll-free service.

In the process of providing the toll-free telephone service (assuming that an automatic answering function for the toll-free telephone service is in progress), when the calling subscriber sends 011, the called subscriber's number, the intelligent network SCP 110 softens the 011 number. Send to switch 130. The soft switch 130 may check whether the number 011 is the number before the mobile of the number portability subscriber through number translation.

In the above example, the caller requests the intelligent network SCP 110 while receiving the toll-free telephone service. However, depending on the type of the intelligent network service, the original call may include the mobile number. For example, the lifetime number service may include the mobile subscriber's mobile number in the calling party's call.

If the called subscriber is determined to be a number portability subscriber by the number translation, the soft switch 130 may contact the NPDB 120 and connect to the 016 number according to the routing number of the called subscriber.

In addition, in the intelligent network service interworking with the conventional soft switch 130, since the soft switch 130 must be terminated with the intelligent network SCP 110 in order to contact the NPDB 120, the soft switch 130 is the intelligent network SCP 110. There is a problem that another wired exchange system 180 should perform the role of maintaining the interworking state with and inquiring to the NPDB 120.

2 is a call processing diagram for providing an intelligent network service using a conventional soft switch (130). 2 assumes a state in which an outgoing signal requesting the intelligent network service is requested to the soft switch 130.

The soft switch 130 internally generates a Call Control Fuction / Serving Call Session Protocol Function (CCF / SSF) call processing object (hereinafter referred to as "call processing object 131") for processing the call signal. In addition, the soft switch 130 transmits and receives a message through the intelligent network SCP 110 and the NO.7 module (not shown). The NO.7 module is a signaling interface implemented in software so that the soft switch 130 is connected to an external device.

In step 201, when the call processing object 131 transmits a service start message to the intelligent network SCP 110, the intelligent network SCP 110 may be connected to the calling terminal to start the intelligent network service. In step 203, the intelligent network SCP 110 may provide the corresponding intelligent network service to the calling terminal and transmit the called party number received from the calling terminal with the connect message to the call processing object 131.

In step 205, the call processing object 131 performs a number translation of the called party number through the number translation unit to determine whether the called party number is the mobile number of the portable subscriber. If it is determined that the number is not the mobile number of the subscriber, the routine routing is performed in step 207. If it is determined that the number is a mobile number of the mobile subscriber, the soft switch 130 should contact the NPDB 120 to receive the routing number of the mobile number.

By the way, in order to inquire the routing number of the mobile number before the soft switch 130 to the NPDB 120 as described above, the interworking between the call processing object 113 and the intelligent network SCP 110 should be terminated. It is impossible to do. Therefore, in step 209, the call processing object 1 transmits a request message (IAM) for inquiring the NPDB 120 of the routing number of the mobile number to another switching system (wired switching center) 180.

In step 211, the wired switch office 180 transmits the service start message (InitialDp) to the NPDB 120 to the NPDB 120, and receives the routing number of the mobile number from the NPDB 120 in step 213. .

In step 215, the wired switching center 180 routes the outgoing signal by transmitting an outgoing signal to the MSC 150 where the called terminal of the subscriber is located by sending a routing message (IAM).

As described in FIG. 2, the soft switch 130 does not simultaneously work with the intelligent network SCP 110 and the NPDB 120, and thus provides the routing number to the NPDB 120 through another switching system to provide the intelligent network service to the number portability subscriber. There is a problem of wasting communication resources.

1 and 2 illustrate a case where an intelligent network service is provided using a soft switch. On the contrary, a communication system for providing an intelligent network service by interworking with a conventional public network switch instead of the soft switch will be described.

The conventional public network switch has to forcibly terminate the interworking between the public network switch and the intelligent network SCP 110 in order to inquire the NPDB 120 with the routing number of the mobile number of the number portable subscriber. Therefore, a problem occurs that the intelligent network service provided to the calling subscriber is interrupted.

In the example of the toll-free service described above, when the called party rejects the toll-free service, the service can no longer be provided to the calling subscriber, so it is impossible to request a toll-free service from another called party. In other words, it provides only some functions of the intelligent network service and does not provide a continuous service.

 The present invention provides a method and apparatus for efficiently providing an intelligent network service in a communication system using a soft switch, and a system thereof.

In addition, the present invention provides a method, apparatus and system for the soft switch interworking with the intelligent network SCP and NPDB at the same time to provide the intelligent network service to the number portability subscriber.

Accordingly, a method for providing an intelligent network service using a soft switch provided by the present invention generates a first call processing object for processing an outgoing signal requested by the soft switch according to the intelligent network service, and the outgoing signal is connected to a number portable subscriber. Determining that the call connection with the number-portable subscriber is requested, and if the outgoing call requires the call connection with the number-portable subscriber, the number before the mobile number routing of the number-portable subscriber Create a second call processing object for processing a; and the second call processing object receives the routing number of the before mobile number from a database that stores the routing number of the number portable subscriber number; And transmitting to the first call processing object.

In addition, a system for providing an intelligent network service using a soft switch provided in the present invention is an intelligent network service controller connected to the soft switch to provide an intelligent network service, a database for storing a routing number of a mobile number of a number portability subscriber, A number translation unit for determining whether the calling signal requested by the soft switch requires call connection with the number mobile subscriber, and if the calling signal requests call connection with the number mobile subscriber, the pre-mobile number And a soft switch having a first call processing object for generating a second call processing object for processing a routing number of the second call processing object.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

3 is a block diagram of a system for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

 The intelligent network SCP 310 may include various logic for the intelligent network service and provide the corresponding intelligent network service to the service subscriber in the state of interworking with the soft switch 330.

The soft switch 330 is generated by the call processing object (1) 331 to inquire the call processing object (1) (331) for processing an outgoing signal and the NPDB (320) to query the routing number of the number portability subscriber. It may include a call processing object (2) (332). In FIG. 3, only one call processing object is additionally generated for convenience of description, but a plurality of call processing objects may be generated according to the type of intelligent network service provided.

It may also include a number translation unit 333 for performing the number translation to determine whether the call originating call connection with the number portability subscriber.

As described with reference to FIG. 3, the conventional soft switch 330 requests the other exchange system to inquire the NPDB 320 of the routing number of the mobile number, but in the present invention, the call processing object 2 contacts the NPDB 320. Can play a role.

4 is a flowchart illustrating a method for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

In step 401, a call signal requesting an intelligent network service is requested to a soft switch, and a call processing object (1) 331 for processing the call signal is generated.

In addition, while the intelligent network service is being performed through interworking with the intelligent network SCP 310, the intelligent network SCP 310 may transmit the called subscriber number received from the subscriber to the call processing object (1) (331).

Step 403 is a process of performing a number translation of the called party number received. By the number translation it can be seen that the called party number is the mobile number of the number portability subscriber.

Step 405 is a process of determining whether the called party number is the mobile number of the number portable subscriber by the number translation in step 403. If the number does not correspond to the mobile number, the process proceeds to step 415, where the routing number of the called party number can be known using the number translation result of step 403, and the calling signal is directly routed along the routing number without having to contact the NPDB. Routing).

In the case of the number portability subscriber's mobile number, the process proceeds to step 407 and a call processing object (2) 332 which serves to query the NPDB 320 for the routing number of the mobile number may be generated. The call processing objects 2 and 332 may be generated by the call processing objects 1 and 331 and proceed to step 409.

In step 409, the call processing object (1) 331 calls the request message (IAM) so that the call processing object (2) 332 requests the NPDB 320 to query the routing number of the mobile number. The process of transmitting to the object (2) (332).

In step 411, the call processing object (2) 332 receiving the request message transmits a service start message to the NPDB 320 to obtain a routing number of the mobile number.

In step 413, the NPDB 320 transmits the routing number to the call processing objects 2 and 332 in response to the service start message, and the call processing objects 2 and 332 receive the received routing number. This is the process of transmitting to the call processing object (1) (331).

After that, the process returns to step 403 and the call processing object (1) 331 may perform number translation on the received routing number. Since the received routing number includes the number after the number portability of the subscriber, it may be determined in step 405 that the number is not the number before the number of the subscriber. Therefore, in step 415, the originating signal may be routed to the called terminal according to the translation result of the routing number.

In step 417, the call processing objects 2 and 332 can delete the call processing objects 2 and 332 since the role of the call processing objects 2 and 332 is terminated as a result of the routing in step 415. to be. This process may be to prevent unnecessary waste of communication resources because the number of mobile subscribers does not always need to process the mobile number. In some cases, it may be deleted by a method other than the call processing object (1) (331).

When the outgoing signal requesting the call connection with the number portability subscriber is requested by the soft switch 330 by the process of FIG. 4, the soft switch 330 is a call processing object 2 for obtaining the routing number of the mobile number. 332) can be further generated.

5 is a call processing diagram for providing an intelligent network service to a number portability subscriber using a soft switch according to an embodiment of the present invention.

5 assumes a state in which a call signal requesting an intelligent network service is requested to a soft switch and a call processing object (1) 331 for processing the call signal is generated.

In step 501, the call processing object (1) 331 may transmit a service start message (InitialDp) to be connected with the intelligent network SCP 310 and the intelligent network SCP 310 may be connected to the calling terminal to provide the intelligent network service. In step 503, the recipient subscriber number received by the intelligent network SCP 310 may be transmitted to the call processing object (1) 331 together with the connection message (Connect).

In step 505, the call processing object (1) (331) performs the number translation of the received recipient subscriber number (not shown in FIG. 5). The number translation result indicates that the called subscriber number is the mobile number of the number portability subscriber. In operation 505, the call processing objects 2 and 332 may be generated. In step 507, the call processing object (1) (331) transmits a message (SetupReqlnd) requesting the call processing object (2) (332) to contact the NPDB (320) and the call processing object (2) (332). May serve to inquire the NPDB 320 about the routing number of the mobile number of the number portability subscriber.

In step 507, the call processing object (2) 332 receiving the request message may transmit a service start message (InitialDp) to inquire the routing number of the mobile number to the NPDB 320 in step 509. In response to this, the NPDB 320 may transmit the routing number of the mobile number to the call processing object 2 and 332 in step 511.

Step 513 transmits a message (RealeseReqlnd) including the routing number received by the call processing object (2) 332 to the call processing object (1) 331, the call processing object (1) (331) Number translation of the routing number (not shown in FIG. 5) may be performed. By the number translation, the MSC 350 in which the called terminal is located can be known. (This process is not illustrated in FIG. 5).

After the number translation, in step 515, the call processing object (1) 331 may route the outgoing signal to the MSC 350 where the called party is located according to the routing number.

Since the call processing object (2) 332 receives the routing number of the mobile number from the NPDB 320 in step 517 and the routing of the originating signal is performed, the role of the call processing object (2) is terminated. The object (1) 331 deletes the call processing object (2) (332). The call processing objects 2 and 332 may be deleted to prevent unnecessary waste of communication resources.

By the method described with reference to FIG. 5, the soft switch 330 may inquire the NPDB 320 with the routing number of the number portability subscriber in the state of interworking with the intelligent network SCP 310 to provide the intelligent network service to the number portability subscriber. have.

Although the present invention has been described in detail so far, it should be apparent that the embodiments mentioned in the process are only illustrative, and not restrictive, and the present invention is provided by the following claims. Within the scope not departing from the scope of the present invention, component changes to the extent that they can be equivalently substituted from the present invention will fall within the scope of the present invention.

According to the technical configuration of the present invention described above, an intelligent network service can be provided to a number portability subscriber in a communication system using a soft switch. In addition, the intelligent network service can be continuously provided to the subscriber without using another wired switch system for connecting to the portability subscriber's database.

Claims (6)

In a method for providing an intelligent network service using a soft switch, Generating a first call processing object for processing an outgoing signal requested by the soft switch according to the intelligent network service; Determining whether the originating call requires call connection with a number portability subscriber; Generating, by the first call processing object, a second call processing object when the call signal requires call connection with the number-portable subscriber; Receiving, by the second call processing object, the routing number of the number before the number portability from a database storing the routing number of the number number before the number portability subscriber; And The intelligent network service using a soft switch comprising the step of transmitting the received routing number to the first call processing object. The method of claim 1, And removing the second call processing object by the first call processing object when the originating signal is routed according to the routing number. The method of claim 1, wherein the second call processing object, A method for providing an intelligent network service using a soft switch in which a plurality can be generated according to the intelligent network service. In a system for providing an intelligent network service using a soft switch, An intelligent network service controller connected to the soft switch to provide an intelligent network service; A database for storing the routing number of the number portability number of the number portability subscriber; And A number translation unit that determines whether the call signal requested by the soft switch requires call connection with the number portable subscriber, and when the call signal requests call connection with the number portable subscriber, the number before the number portability number. And a soft switch having a first call processing object for generating a second call processing object for querying a routing number and receiving the routing number. The method of claim 4, wherein the first call processing object, And a soft switch further configured to delete the second call processing object when the originating signal is routed according to the routing number. The method of claim 4, wherein the second call processing object, Call processing system including a soft switch that can be generated in plurality according to the intelligent network service.

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