KR100526065B1 - Method for Treatment of Feature Code Using The Dual Stack System in the WCDMA Core Network - Google Patents

Abstract

The present invention provides a function code processing method in a dual stack mobile communication system for constructing a synchronous mobile network and an asynchronous mobile communication network as a single interworking network.

In the asynchronous mobile communication system, intelligent network messages such as InitDP and Connect are used to process additional services according to the function code entered by the user. The exchange transmits the function code to the home location register by referring to a specific symbol included in the function code when a call attempt and function code are input from the subscriber's terminal (InitDP). The home location register activates or deactivates the corresponding supplementary service according to the received function code, and then transmits information for transmitting an announcement broadcast to inform the subscriber of the result of supplementary service processing or transmits a routing number to the exchange (Connect). The exchange sends a guide message according to the additional service processing result to the terminal according to the information received from the home location register, or routes to another home location register so that the additional service requested by the user can be processed.

Accordingly, the function code according to the subscriber's request can be processed without changing or expanding the switching system of the mobile communication network components.

Description

Method for Treatment of Feature Code Using The Dual Stack System in the WCDMA Core Network}

The present invention relates to a method for processing a function code in an asynchronous network, and more particularly, to a method for processing a function code in a dual stack mobile communication system for constructing a synchronous mobile network and an asynchronous mobile communication network as a single interworking network.

Second and second generation mobile communication networks such as CDMA mobile communication networks and mobile communication networks such as UMTS networks have fundamental differences in their communication methods, synchronous and asynchronous, respectively. The differences do not match the manganese messages one-to-one. Therefore, when the synchronous network and the asynchronous network are independently constructed, when the gateway is introduced to implement interworking between networks, the cost of the system overlapping investment is caused. In addition, even if the cost is neglected, only a few messages can be matched by the message conversion process at the gateway, and there is a problem in that the functions do not interwork for a message that performs most important functions.

A dual stack mobile communication system is a system for solving such problems occurring in interworking between synchronous and asynchronous networks. The dual stack mobile communication system includes a single node including all homogeneous nodes of a synchronous network and an asynchronous network, and a single node is a synchronous protocol and an asynchronous protocol for one input signal point according to a synchronous protocol or an asynchronous protocol. The system searches for information for generating two output signal points according to the protocol of the scheme and generates one corresponding output signal point. Such dual stack mobile communication systems include a Home Location Registry (hereinafter referred to as "HLR"), a Short Message Service Center (hereinafter referred to as "SMSC") and an Intelligent Network Service Controller (Service Control Point); In the following description, it is possible to solve mismatching problems such as message and subscriber profiles according to protocol differences between synchronous and asynchronous networks, because the stack is used as a dual stack.

Meanwhile, in the mobile communication system, function codes such as activating / deactivating various additional services or activating the additional services and performing routing processing for additional service processing may be processed according to the request of the terminal users. Here, the function code means a specific code transmitted from the terminal to the mobile communication system in order to request activation / deactivation or routing processing of an additional service, and is assigned differently for each service. Additional services that can be activated / deactivated by receiving a function code from a user include switching to another terminal of an incoming call and an out-of-office notification service. When requesting routing processing, access to a specific server for recharging the balance of a prepaid mobile phone. Request, connection request service to a voice mail service center for checking voice mail, and the like.

Such additional services can be used by requesting activation / deactivation of additional services by directly operating a user's own terminal without having to directly visit a customer center provided by a network operator.

As an example, a function code processing process for activating / deactivating an additional service among function code processing processes in a synchronous mobile communication network for a user subscribed to the synchronous mobile communication system will be described with reference to FIG. 4. In the following description, a mobile communication terminal refers to a terminal (dual mode mobile communication terminal) that can be used in both synchronous and asynchronous mobile communication networks.

As shown, when the mobile communication terminal (MS) attempts to call including the identification code for the function code processing request (S300), the exchange (hereinafter referred to as 'MSC') attempts a call transmitted from the mobile communication terminal It is confirmed that the specific signal is included in the request signal and transmitted to the HLR (S302). Here, the function code transmitted with the call attempt request from the user may be a specific number, letter, symbol, or a combination thereof (eg, * 77, etc.). In addition, the function code processing request message may be either an additional service activation request or an additional service deactivation request.

The HLR checks which service request code is the function code received from the MSC, and activates or deactivates the corresponding additional service (S304). Thereafter, the HLR transmits a response signal and a suitable announcement code for the function code processing result to the MSC (S306). Here, the announcement code means a code corresponding to various announcements for informing the user that the requested service has been completed, and the MSC receiving the announcement broadcasts the announcement corresponding to the corresponding code and transmits it to the mobile communication terminal. In operation S308, the user may know that the service requested by the user has been correctly processed.

However, the function code processing method described above is limited only when the synchronous mobile communication service subscriber is in the synchronous mobile communication network. In the asynchronous mobile communication system, a message for processing the function code is not defined. Accordingly, a method for activating / deactivating a function code in an asynchronous mobile communication network system and providing a method for routing to a specific server for processing an additional service according to the function code should be presented.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and means a method and a function code that can perform a function code processing required by a subscriber using a predefined network message in an asynchronous network using a dual stack system. There is a technical problem to provide a function code processing method that can be routed to a specific server according to the type of additional service.

In the present invention, an intelligent network message such as InitDP or Connect is used to process an additional service according to a function code input by a user in an asynchronous mobile communication system. When the call attempt and the function code are input from the subscriber terminal, the exchange transmits the function code to the home location register by referring to a specific symbol (for example, *) included in the function code (InitDP). The home location register checks which supplementary services the received function codes mean, activates or deactivates the supplementary services, and allocates resources to the exchange to transmit the result of supplementary service processing to the terminal or exchanges incoming calls for additional service processing. Connect the routing number for routing to the server or server (Connect).

The exchange sends a guide message according to the additional service processing result to the terminal according to the information received from the home location register, or routes to another home location register so that the additional service requested by the user can be processed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a mobile communication terminal refers to a terminal (dual mode mobile communication terminal) that can be used in both synchronous and asynchronous mobile communication networks.

1 is a schematic diagram of a dual stack mobile communication system to which the present invention is applied and includes a 2.5G synchronous mobile communication system 410, a 3G asynchronous mobile communication system 420, an SS7 network 30, and a dual stack home location register. HLR, 500), dual stack short message service center (Dual Stack SMC, 600), and dual stack intelligent network switch (Service Control Part; hereinafter referred to as SCP ').

Here, the 2.5G synchronous mobile communication system 410 is a base station for controlling the base station (BTS, 411), the base station 411 for wireless section communication with the 2.5G and / or 2.5G / 3G mobile communication terminal A controller (BSC, 412), connected to one or more of the base station controllers 412, connected between a 2.5G exchanger (2.5G MSC, 413), a public wired network (PSTN, 10) and a 2.5G exchanger 413 for call exchange. Is connected between the public wired network 10 and the 2.5G gate exchanger (2.5G CGS, 414) and the base station controller 412 and the Internet protocol network (IP Network, 20) for network interworking and call exchange. The data serving node (PDSN) 415 has a basic configuration.

Also, the 3G asynchronous mobile communication system 420 is a wireless network for controlling Node B 421 and Node B 421 as a base station for wireless section communication with 3G and / or 2.5G / 3G mobile communication terminals. A controller (RNC) 422, connected to one or more of the radio network controllers (RNC, 422), connected between a 3G exchanger (3G MSC, 423), a public wired network (PSTN) 10, and a 3G exchanger 423 for call exchange. Connected between the 3G gate switch (GMSC, 424), the wireless network controller 422 and the IP network 20 for network interworking and call exchange with the public wired network 10, and monitors the position of the mobile communication terminal, Connected with SGSN (Serving GPRS Support Node, 425) and IP network 20 to perform functions and access control functions, interworking with external packet switch network, and accessing SGSN through IP-based packet domain PLMN backbone network The Gateway GPRS Support Node (GGSN) 426 is configured as a basic configuration.

Meanwhile, the SS7 network 30 interconnects the 2.5G exchanger 413, the 2.5G gate exchanger 414, the 3G exchanger 423, the 3G gate exchanger 424, the SGSN 425, and the GGSN 426. Perform a mutual call processing exchange.

The dual stack HLR 500 is connected to the SS7 network 30 to integrate and manage a database related to location information such as location registration for 2.5G / 3G subscribers. Function and 3G home location register, but for one input signal point according to 2.5G synchronous protocol or 3G asynchronous protocol, according to 2.5G synchronous protocol and 3G asynchronous protocol Information for generating two output signal points is searched to generate one corresponding output signal point, and a corresponding message is transmitted to the corresponding output signal point.

The dual stack short message service center 600 is connected to the SS7 network 30 to integrate and manage the short message service for the 2.5G / 3G subscribers, thereby providing the functions of the existing 2.5G short message service center and the 3G short message service center. To perform all functions, create two output signal points according to 2.5G synchronous protocol and 3G asynchronous protocol for one input signal point according to 2.5G synchronous protocol or 3G asynchronous protocol. Search for the information to generate a corresponding output signal point, and transmits the corresponding message to the corresponding output signal point.

The dual stack SCP 700 is connected to the SS7 network 30 to integrate and manage the intelligent network service for the 2.5G / 3G subscribers, and to perform both the SCP function in the existing 2.5G network and the SCP function in the 3G network. Search for the information for generating two output signal points according to the 2.5G synchronous protocol and the 3G asynchronous protocol, for one input signal point according to the 2.5G synchronous protocol or the 3G asynchronous protocol. A corresponding one output signal point is generated and a corresponding message is transmitted to the corresponding output signal point.

2 is a flowchart illustrating a function code processing method according to an embodiment of the present invention. For example, a key function code processing applied to activating / deactivating a call transfer service to another terminal, an missed setting service, or the like is illustrated. The method is shown.

First, when the synchronous mobile network subscriber roams into the asynchronous mobile network, the 3G MSC 423 requests the location registration to the dual stack HLR 500 based on the location registration procedure of the asynchronous mobile network, and the dual stack HLR 500. Trigger information is set by including the trigger information in the response message to the location registration request (S100).

After the location registration is completed in this way, when the subscriber inputs a function code with a specific symbol using the mobile communication terminal and attempts to transmit (S102), the 3G MSC 423 uses the function code by the specific symbol transmitted from the terminal. The service control request message including the transmits to the dual stack HLR 500 (InitDP) (S104).

Upon receiving this, the dual stack HLR 500 checks the function code included in the service control request message (S106), activates or deactivates the additional service according to the corresponding function code, and guides the 3G MSC 423. Allocate a resource for broadcast transmission (ConnectToResource) (S108). And transmits the announcement code for notifying the subscriber of the result of the function code processing to the 3G MSC (423) (PlayAnnouncement) (S110).

Receiving the announcement code 3G MSC (423) transmits the announcement matching the announcement code to the terminal (FeatureConfirmation) (S112), and transmits the announcement processing result to the dual stack HLR (500) (SpecializedResourceReport) (S114). Thereafter, the resources allocated in step S108 are released and the call path is released (ReleaseCall) (S116).

For example, in the case where the subscriber activates the call transfer service, the subscriber enters a specific symbol and a function code for activating the call transfer service in step S102 and attempts to make the call (for example, * 77 + SEND), the 3G MSC 423 confirms that the '*' is included in the call request signal and transmits a function code together with the service control request message to the dual stack HLR 500 (S104). The dual stack HLR 500 confirms that the corresponding function code 77 is a function code for activating a call transfer service, and sets the call transfer to another terminal previously set by the subscriber (S106). Then, the 3G MSC 423 To allocate resources for announcements (S108) and transmits the announcement code (S110).

The 3G MSC 423 transmits the announcement to the terminal by referring to the announcement code received from the dual stack HLR 500 (S112), for example, 'the telephone connection has been switched to 011-XXX-YYY'. The announcement may be such as. Thereafter, the 3G MSC 423 notifies the dual stack HLR 500 of the announcement processing result and releases the call path (S114 and S116).

3 is a flowchart illustrating a method for processing a function code according to another embodiment of the present invention. For example, a method for processing a function code for a connection request service to a specific server for recharging a balance for a prepaid mobile phone service. Indicates.

First, when the synchronous mobile network subscriber roams into the asynchronous mobile network, the 3G MSC 423 requests the location registration to the dual stack HLR 500 based on the location registration procedure of the asynchronous mobile network, and the dual stack HLR 500. Trigger information is set by including the trigger information in the response message to the location registration request (S200).

After the location registration is completed in this way, when the subscriber inputs a function code with a specific symbol using the mobile communication terminal and attempts to transmit (S202), the 3G MSC 423 uses the function code by the specific symbol transmitted from the terminal. The service control request message including the transmission to the dual stack HLR 500 (InitDP) (S204).

Upon receiving this, the dual stack HLR 500 checks the function code included in the service control request message (S205), and transmits routing information to the 3G MSC 423 according to the corresponding function code (Connect) (S206). ). That is, the 3G MSC 423 transmits the called number to be reconnected to process the function code requested by the subscriber.

Receiving routing information from the dual stack HLR 500, the 3G MSC 423 refers to the routing information and requests information of the exchange to route to the home location register (T-HLR) to attempt redial (SendRoutingInformation) ( S208), the re-send home position register (T-HLR) requests a roaming number to the exchange (T-MSC) to be re-sent (ProvidingRoamingNumber) (S210). When the T-MSC transmits a roaming number in response (ProvidingRoamingNumberAck) (S212), the T-HLR sends a routing information request including a roaming number to the 3GMSC (423). The response signal is transmitted (SendRoutingInformationAck) (S214).

Accordingly, the subscriber station is connected to the re-switching exchange (T-MSC) (S216), the re-switching exchange is processing the additional service according to the subscriber's request (S218).

For example, when the subscriber accesses the balance charging server to use the prepaid mobile phone service, the subscriber inputs a specific symbol and a function code to charge the balance in step S202 and attempts to make a call. (Eg, * 99 + SEND), the 3G MSC 423 confirms that the '*' is included in the outgoing request signal and transmits a function code along with the service control request message to the dual stack HLR 500 ( S204). The dual stack HLR 500 confirms that the corresponding function code 99 is a function code requesting a balance charge, and transmits routing information for connecting the call attempt request to the balance charge server to the 3G MSC 423.

The 3G MSC 423 requests routing information to the re-sent HLR (T-HLR) according to the routing information received from the dual stack HLR 500 (S208), whereby the re-sent HLR (T-HLR) re-sent As the exchange information is transmitted (SS210 to S214), the terminal is connected to the re-send exchange (S216) and the additional service processing is performed. In other words, when the subscriber inputs the balance charge amount of the prepaid mobile phone, the T-MSC stores it in the SCP (not shown) and sends the processing result to the terminal.

As described above, in the present invention, an intelligent network message (InitDP, Connect, etc.) is used to process a function code used in a synchronous mobile communication network. Accordingly, a separate system is added to add a function code for activating / deactivating an additional service in a synchronous mobile communication network. It can be easily handled without upgrading.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, according to the present invention, when a synchronous mobile network subscriber roams into an asynchronous dual mode mobile communication system with a dual mode mobile communication terminal, a function code according to a subscriber's request is changed by using an intelligent network message. Can be handled without extensions or extensions.

1 is a schematic diagram of a dual stack mobile communication system to which the present invention is applied;

2 is a flowchart illustrating a function code processing method according to an embodiment of the present invention;

3 is a flowchart for explaining a function code processing method according to another embodiment of the present invention;

4 is a flowchart illustrating a function code processing method in a conventional mobile communication system;

<Description of the symbols for the main parts of the drawings>

10, 20: Public wired network (PSTN) 30: SS7 network

410: synchronous mobile communication system (2G / 2.5G) 411: base station

412: base station controller 413: 2.5G switch

414: 2.5G Gate Exchange

415: Packet data serving node (PDSN)

420: asynchronous mobile communication system (3G) 421: node B

422: wireless network controller 423: 3G switch

424: 3G Gate Exchanger 425: SGSN

426: GGSN 500: Dual Stack HLR

600: Dual Stack SMC 700: Dual Stack SCP

Claims (7)

A wireless network controller for allowing a mobile communication terminal to access an asynchronous network through a NodeB, a switch for connecting to the wireless network controller to perform a call exchange, and storing subscriber information, location information, and additional service information of the mobile communication terminal. A function code processing method in a dual stack mobile communication system having a dual stack home location register, Performing location registration of the mobile communication terminal roaming into the asynchronous network; As a call including a specific symbol and a function code is attempted from the mobile communication terminal, the service control request message includes the function code and the mobile terminal number to the dual stack home location register using an InitDP message. Transmitting; Checking, by the dual stack home location register, the function code and activating / deactivating an additional service according to the function code and requesting resource exchange for resource allocation for announcement; The dual stack home location register transmitting an announcement code to the exchange; And Transmitting, by the exchange, a guide broadcast to the mobile communication terminal by referring to a guide broadcast code received from the dual stack home location register; Function code processing method in a dual stack mobile communication system comprising a. According to claim 1, And after the exchange transmits the announcement to the mobile communication terminal, disconnecting a connection between the exchange and the dual stack home location register. . According to claim 1, The location registration step includes the exchange requesting location registration of the mobile communication terminal to the dual stack home location register; And Performing location registration on the mobile communication terminal in the dual stack home location register and transmitting a response message to location registration including trigger setting information to the exchange; Function code processing method in a dual stack mobile communication system comprising a. delete A wireless network controller for allowing a mobile communication terminal to access an asynchronous network through a NodeB, a switch for connecting to the wireless network controller to perform a call exchange, and storing subscriber information, location information, and additional service information of the mobile communication terminal. A function code processing method in a dual stack mobile communication system having a dual stack home location register, Performing location registration of the mobile communication terminal roaming into the asynchronous network; As a call including a specific symbol and a function code is attempted from the mobile communication terminal, the service control request message includes the function code and the mobile terminal number to the dual stack home location register using an InitDP message. Transmitting; The dual stack home location register checking the function code and transmitting routing information to the exchange using a Connect message; Requesting, by the exchange, routing information to a re-entry home location register with reference to the routing information; Connecting the mobile communication terminal to the resend exchange as the resend home location register sends the resend exchange information to the exchange; And Performing additional service processing between the mobile communication terminal user and the resend exchange; Function code processing method in a dual stack mobile communication system comprising a. The method of claim 5, The location registration step includes the exchange requesting location registration of the mobile communication terminal to the dual stack home location register; And Performing location registration on the mobile communication terminal in the dual stack home location register and transmitting a response message to location registration including trigger setting information to the exchange; Function code processing method in a dual stack mobile communication system comprising a. delete