KR101080304B1 - Method for setting granted service unit of access network in terminal supporting multi-different networks and system thereof - Google Patents

Abstract

Disclosed are a method and system for setting a prepaid service usage quota for each access network of a terminal supporting a plurality of heterogeneous networks. According to an embodiment of the present invention, there is provided a method for setting a prepaid service usage quota for each access network, comprising: receiving a prepaid balance management request message for a prepaid service requested from a terminal supporting a plurality of heterogeneous networks; Checking access network information that transmits the prepaid balance management request message among the heterogeneous networks; Setting a transmission period for transmitting the prepaid balance management request message in the access network; And transmitting a response message including the set transmission period to the access network so that the prepaid balance management request message can be received after the prepaid service is provided and a time corresponding to the transmission period has elapsed. have.

TBTM, WIFI, WiBro, WCDMA, Service Usage Quota (GSU), Prepaid, QoS, Bandwidth

Description

METHODS FOR SETTING GRANTED SERVICE UNIT OF ACCESS NETWORK IN TERMINAL SUPPORTING MULTI-DIFFERENT NETWORKS AND SYSTEM THEREOF}

The present invention relates to a prepaid service usage quota setting, and more particularly, when a prepaid service is requested through a terminal supporting a plurality of heterogeneous networks including a WIFI network, a WiBro network, and a WCDMA network, a quality of service (QoS) for each access network is provided. ) Or by setting the prepaid service usage quota (GSU) in consideration of bandwidth, the prepaid service usage quota for each access network can reduce the message overhead between IM-SCP and clients of the access network that may be generated by the prepaid service request. It relates to a setting method and a system thereof.

In general, in the WIFI network, WCDMA network or WiBro network is operated in the form of providing a data service in real time differently for separate subscribers.

Recently, a data service can be used in two or three networks through a DBDM terminal capable of providing both a WiBro network and a WCDMA network, and a TBTM terminal capable of providing both a WIFI network, a WCDMA network, and a WiBro network.

However, since there is no network integration for billing, the clients for each access network, for example, A-server (integrated server) of WiBro network and ASN of WIFI network when providing data services connected to multiple heterogeneous networks Each of the service usage quotas (GSUs) transmitted to the GGSN of the GW and WCDMA networks are fixed to a specific value.

As a result, when the service usage quota (GSU) is fixed to a specific value when a plurality of heterogeneous networks are integrated, the prepaid service update is requested to the server after providing the service usage quota to the terminal due to differences in QoS or bandwidth for each network. Overhead of the message may occur.

Therefore, as the use of terminals supporting a plurality of heterogeneous networks in the future increases, it is necessary to set a service usage quota (GSU) according to the access network according to the access network requesting the prepaid service.

An object according to an embodiment of the present invention, which was created to solve the above problems, is to update a prepaid service between a client and IM-SCP for each access network that may be generated in response to a prepaid service start request in a terminal supporting a plurality of heterogeneous networks. The present invention provides a method and system for setting a prepaid service usage quota for each access network for a terminal supporting a plurality of heterogeneous networks that can reduce message overhead.

Preferably, the present invention transmits a prepaid service update message (CCR [Update]) from a prepaid service usage quota (GSU) or a client of a corresponding access network when a prepaid service start request is requested from a terminal in consideration of a plurality of heterogeneous network QoS or bandwidths. By setting the transmission period for each access network, the message overhead generated between the client and the IM-SCP of the access network can be reduced, thereby improving network efficiency.

In accordance with an aspect of the present invention, there is provided a method for setting a prepaid service usage quota for each access network, comprising: receiving a prepaid balance management request message for a prepaid service requested from a terminal supporting a plurality of heterogeneous networks; Checking access network information that transmits the prepaid balance management request message among the heterogeneous networks; Establishing a pre-paid service usage quota (GSU) for the access network; And transmitting a response message including the prepaid service usage quota set to the access network so that the prepaid balance management request message can be received after the available packet size is provided to the terminal for the prepaid service usage quota. It may include.

Preferably, the setting may include setting a prepaid service usage quota for the access network in consideration of a preset Quality of Service (QoS) for each of the plurality of heterogeneous networks, and additionally considering bandwidths of the heterogeneous networks. It is also possible to set the prepaid service usage quota for the access network.

According to another aspect of the present invention, a method for setting a pre-paid service usage quota for each access network comprises: receiving a prepaid balance management request message for a prepaid service requested from a terminal supporting a plurality of heterogeneous networks; Checking access network information that transmits the prepaid balance management request message among the heterogeneous networks; Setting a transmission period for transmitting the prepaid balance management request message in the access network; And transmitting a response message including the set transmission period to the access network so that the prepaid balance management request message can be received after the prepaid service is provided and a time corresponding to the transmission period has elapsed. have.

According to an aspect of the present invention, there is provided a system for setting a prepaid service usage quota for each access network, including: a receiving unit receiving a prepaid balance management request message for a prepaid service requested from a terminal supporting a plurality of heterogeneous networks; A confirmation unit for confirming access network information transmitting the prepaid balance management request message among the plurality of heterogeneous networks; A setting unit for setting a prepaid service usage quota (GSU) for the access network; And a transmission unit for transmitting a response message including the prepaid service usage quota set so that the prepaid balance management request message can be received after the available packet size is provided to the terminal for the prepaid service usage quota. It may include.

Other objects and features of the present invention in addition to the above objects will be apparent from the description of the embodiments with reference to the accompanying drawings.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, a method and system for setting a pre-paid service usage quota for each access network for a terminal supporting a plurality of heterogeneous networks according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 13.

1 is a diagram illustrating a system for setting a pre-paid service usage quota setting for each access network according to an embodiment of the present invention, and illustrates a system for a WIFI network, a WiBro network, and a WCDMA network.

Of course, a plurality of heterogeneous networks are not limited to WIFI networks, WiBro networks, and WCDMA networks, and may include all networks capable of providing prepaid services, that is, prepaid data services. For example, CDMA networks and PSDN networks. Can be mentioned.

Referring to FIG. 1, the system for setting a prepaid service usage quota for each access network includes an access service node gateway (ASN-GW) 110, a gateway GPRS support node 120 (GGSN) 120, A -Aggregation Server (Integration Server) 130, Internet Protocol (IP) Multimedia subsystem-Service Control Point (IM-SCP) 140 and Service Control Point (SCP) Point) 150.

TBTM terminals supporting WIFI network, WiBro network and WCDMA network can receive mobile Internet service in a small area according to WIFI (Wireless Fidelity) protocol through AP (Access Point) (not shown) of WIFI network, and WCDMA network. Wireless Internet service according to the Wideband Code Division Multiple Access (WCDMA) protocol through the GGSN (120) of the GGSN, and also through the WiBro (Transit Access Point (TAP) (not shown) of the WiBro network) Mobile Internet service may be provided according to the Broadband protocol.

In the present invention, if the TBTM terminal requests a prepaid service through any one of the WIFI network, WiBro network and WCDMA network, the client of the network, that is, ASN-GW of the WIFI network, GGSN of the WCDMA network, A of the WiBro network If the server sends a request message to start the prepaid service from the server to IM-SCP, and the prepaid service can be started through the prepaid subscriber's prepaid balance for the corresponding TBTM terminal by the communication between the IM-SCP and SCP, the IM-SCP In response to the prepaid service initiation request message, a prepaid service unit (GSU) for the access network is set and transmitted to the client of the access network, thereby generating a network-specific client that can be generated by a plurality of heterogeneous network integrations. The network overhead can be improved by reducing the message overhead between IM-SCPs.

The ASN-GW 110 maintains and manages the information of the accessing terminal, the IP routing and mobility management function, the authentication and security function, the QoS providing function, the IP multicast function, the charging service providing function for the charging server, and the ASN- The present invention provides a handover function, a resource management and a control function between the GWs, and the present invention provides a prepaid service requested from a TBTM terminal using an WIFI network through an interworking with the IM-SCP 140 and an IM-SCP ( After providing to the TBTM terminal as much as the packet size for the GSU set by 110, and transmits a prepaid service update message to the IM-SCP (140).

In this case, the GSU for the WIFI network set by the IM-SCP 140 may be different from the GSU for the WiBro network and the GSU for the WCDMA network.

The GGSN 120 is a gateway system for data service call processing of an L3 / L4 layer. In the present invention, the GGSN 120 provides a prepaid service requested from a TBTM terminal using a WCDMA network through an interworking with the IM-SCP 140. After providing the packet size for the GTM set by the IM-SCP 140 to the TBTM terminal, a prepaid service update message is transmitted to the IM-SCP 140.

In this case, the GSU for the WCDMA network set by the IM-SCP 140 may be different from the GSU for the WIFI network and the GSU for the WiBro network.

The A-server 130 is a system that collects the session information generated in the Authentication / Authority / Accounting (AAA) server (not shown) in the WiBro network and the billing CDR generated in the Packet Service Gateway (PSG) system (not shown). In the present invention, the interworking with the IM-SCP 140 provides a prepaid service requested from the TBTM terminal using the WiBro network as an access network, and the packet size for the GSU set by the IM-SCP 140 to the TBTM terminal. After providing the prepaid service update message to the IM-SCP (140).

At this time, the GSU for the WiBro network set by the IM-SCP 140 may be different from the GSU for the WIFI network and the GSU for the WCDMA network.

IM-SCP (140) from the client of the access network, that is, ASN-GW of the Wi-Fi network, A-server of the WiBro network and GGSN of the WCDMA network by the request for initiating prepaid service by the TBTM terminal corresponding to the prepaid subscriber Prepaid Service Initiation Request Message For example, when a CCR [initial] message is received, the prepaid subscriber information is provided to SCP 150 from the prepaid service initiation request message received, and a response message such as a request from SCP 150 is provided. In response to receiving the response that the prepaid service can be provided, the response message to the prepaid service initiation request message including the prepaid service usage quota set after checking the access network information and setting the prepaid service usage quota (GSU) for the access network. For example, by sending a CCA [initial] message to a client of the access network, the client of the access network has set up the prepaid service. After providing a quota to TBTM terminal receives the prepaid service updates requested for the real-time update of the prepaid service from a client of the access network.

In this case, the IM-SCP 140 sets the prepaid service usage quota (GSU) included in the response message according to the access network that is accessed by the TBTM terminal to request the prepaid service start, that is, the WIFI network, the WCDMA network, and the WiBro network. The prepaid service usage quota may be set in consideration of QoS, bandwidth, etc. for each access network.

For example, if the prepaid service is requested in the WIFI network, the IM-SCP 140 sets the prepaid service usage quota to 1 [MB], and then sends a response message to the ASN-GW of the WIFI network, and the prepaid service in the WCDMA network. If requested, set the prepaid service usage quota to 200 [KB], and then send a response message to the GGSN of the WCDMA network to provide the prepaid service usage quota to the TBTM terminal and then request a prepaid service update message. Can receive from the client.

In addition, the IM-SCP 140 sets the transmission period of the message requesting the prepaid service update from the client of the access network for each access network and transmits a response message including the same to the client of the access network, thereby allocating the prepaid service usage quota for each access network. It can also set differently.

In this case, the IM-SCP 140 may set the transmission period of the prepaid service update message transmitted from the client of the access network in consideration of QoS, bandwidth, etc. for each network.

In addition, the IM-SCP 140 receives a prepaid service usage quota (GSU) or a corresponding service even when receiving a prepaid service update message (CCR [Update]) as well as a prepaid service start request message (CCR [initial]) from a client of an access network. The interval for transmitting prepaid service update message in access network can be set.

The IM-SCP 140 receives the packet amount using the prepaid service in real time from the client of the access network requesting the prepaid service, calculates a usage fee for the received packet amount, and transmits it to the SCP 150, thereby transmitting the TBTM terminal. You can update the prepaid balance of prepaid subscribers who use.

Furthermore, the IM-SCP 140 may notify the client of the access network that the data call processing is restricted when the prepaid subscriber's prepaid balance is exhausted or meets a predetermined condition.

SCP 150 receives prepaid subscriber information requesting prepaid service from IM-SCP 140, retrieves the prepaid balance of the prepaid subscriber, provides the retrieved prepaid balance information to IM-SCP, and IM-SCP 140 Receive the prepaid service usage fee used by the prepaid subscriber from the subscriber and update the prepaid balance of the prepaid subscriber.

As described above, the system for setting a prepaid service usage quota setting for each access network according to an embodiment of the present invention sets up a prepaid service use amount per month or a transmission period for transmitting a prepaid service update message from a client of the access network for each access network. It is possible to prevent the overhead of prepaid service update message between network-specific clients and IM-SCP, which can be generated by integration, thereby improving network efficiency.

FIG. 2 shows an embodiment configuration for the IM-SCP shown in FIG. 1.

Referring to FIG. 2, the IM-SCP includes a receiver 210, a confirmation unit 220, a setting unit 230, and a transmitter 240.

When requested from the TBTM terminal, the receiver 210 receives a prepaid service start request message or a prepaid service update message, which is a prepaid balance management request message, from a client of a corresponding access network.

The confirmation unit 220 confirms access network information that transmits a prepaid service start request message among a plurality of heterogeneous networks from the prepaid service start request message or the prepaid service update message received by the receiver 210.

That is, the confirmation unit 220 confirms whether the prepaid service update is requested through which of the heterogeneous networks the TBTM terminal is requested.

At this time, the confirmation unit 220 may check the access network information through the Service-Context-ID parameter content of the parameters constituting the prepaid service start request message or prepaid service update message.

When the prepaid service is available through the balance information of the prepaid subscriber who requested the prepaid service, the setting unit 230 may provide a prepaid service usage quota (GSU) corresponding to the access network information checked by the checker 220 or the client of the access network. Sets a transmission period for transmitting a prepaid service update message.

Here, the setting unit 230 may set the transmission period of the prepaid service usage quota (GSU) or the prepaid service update message in consideration of a plurality of heterogeneous networks, QoS, bandwidth, etc., the prepaid service usage quota (GSU) or prepaid for each access network. The transmission period of the service update message may be preset and stored, or may be set according to a predetermined format or rule when receiving a prepaid service start request message or a prepaid service update message and transmitting a response message thereto.

For example, if the access network identified by the checker 220 is a WIFI network, the setting unit 230 sets a prepaid service usage quota to 1 [MB] in consideration of the QoS and bandwidth of the WIFI network, and the access network is a WCDMA network. In this case, the prepaid service usage quota may be set to 200 [KB] in consideration of the QoS and bandwidth of the WCDMA network.

The transmitter 240 generates a response message including a prepaid service usage quota (GSU) of the access network set by the setting unit 230 or a transmission period of the prepaid service update message and transmits the response message to the client of the access network.

That is, the transmitting unit 240 provides a packet corresponding to the prepaid service usage quota set by the setting unit 230 from the client of the access network to the TBTM terminal or after a time corresponding to the transmission period of the prepaid service update message has elapsed. In order to receive the prepaid service update message transmitted from the client of the access network, a response message including the prepaid service usage quota or transmission period set by the setting unit 230 is transmitted to the client of the access network.

FIG. 3 is a flowchart illustrating a method of setting a pre-paid service usage quota setting for each access network according to an embodiment of the present invention. FIG. 3 is a flowchart illustrating an operation of the IM-SCP shown in FIG. 1.

Referring to FIG. 3, when a prepaid service is requested from a terminal supporting a plurality of heterogeneous networks, the IM-SCP receives a prepaid service initiation request message requesting to start prepaid service from a client of a corresponding access network, and receives a prepaid service initiation request message. Check the access network information (S310, S320).

The IM-SCP requests and receives prepaid balance information for the prepaid subscriber who requested the prepaid service to the SCP, and determines whether the prepaid service can be provided through the received prepaid balance (S330, S340).

The IM-SCP sets a prepaid service usage quota (GSU) for the corresponding access network based on the access network information identified in step S320 (S350).

In this case, the prepaid service usage quota (GSU) may be set according to the access network, which may be set in consideration of the QoS and bandwidth of the access network, and this value may be preset and stored.

Of course, the IM-SCP may directly set a prepaid service usage quota or set a transmission period for transmitting a prepaid service update message from a client of the access network.

The IM-SCP transmits a response message to the client of the access network including the set prepaid service usage quota to the client of the access network, thereby allowing the terminal to receive the prepaid service through the access network (S360).

3, that is, the process of confirming the access network information is not limited to step S310 and may be performed after step S330.

Although the description is limited to the prepaid service start request message in FIG. 3, the present invention is not limited thereto. The prepaid service update message may be applied to the prepaid service update message, and the prepaid service usage quota may be set. Applicable for balance management request message.

4 and 9 will be described in detail with respect to the method for setting a pre-paid service usage quota for each access network according to the present invention.

4 is a flowchart illustrating an operation of setting a prepaid service usage quota when a TBTM terminal of a prepaid subscriber accesses a WiBro network.

As shown in FIG. 4, between the A-server, the IM-SCP, and the SCP, an initialization process (S410 to S418), an update process (S420 to S426), and an end process (S430 to S433) are performed.

In detail, first, in the initialization process, when an idle TBTM terminal accesses a WiBro network to start a prepaid service, that is, request a real-time prepaid data service (S410), the A-server AAA server. It collects the session information about the traffic of the corresponding data service from and sends a CCR [Initial] message to the IM-SCP to request the real-time prepaid balance deduction (S411).

Here, the CCR [Initial] (Credit Control Request [Initial]) message corresponds to a message for requesting a prepaid balance inquiry for credit control (prepaid balance management) during the initialization process of the CCR message (prepaid balance management request message).

This CCR [Initial] message includes a Service-Context-ID 510 indicating periodic information on service context ID attribute value pair (AVP) information, such as WLAN.08.450.7.32252@3gpp.org, as shown in FIG. Subscription-Id Data indicating AVP information for subscriber ID such as Credit Control (Request-Type) AVP, subscriber number (MSISDN = 821030101815), etc., indicating AVP information on the billing processing cycle such as Initial Request = 1). Includes IN-Service AVP, which represents AVP information for service types such as AVP, Intelligent Network Prepaid Service Type (IN-Service), and IMS-Charging-Identifier, which represents AVP information for billing IDs such as IMS Charging ID (ICID). do.

Next, the IM-SCP sends a message for inquiring the prepaid balance of the prepaid subscriber to the SCP, for example, a Remains Request [Get] (S412), and the SCP prepaid subscriber information included in the Remains Request [Get]. Check the available prepaid balance information of the prepaid subscriber, calculate the available packet size using this prepaid balance information, and send it to IM-SCP by including it in the response message, for example, Remains Response [Account]. (S413).

Accordingly, the IM-SCP sends a message requesting prepaid balance reservation for the requested service unit (RSU) via the CCR [Initial] message, for example, Reserve Request [Reserve] to the SCP ( S414), a result message for the reservation request indicating that a prepaid balance reservation has been made from the SCP, for example, a Reserve Response is received (S415).

The IM-SCP checks the access network information with reference to the Service-Context-ID parameter content 510 of the CCR [Initial] message shown in FIG. 5 and considers the QoS, bandwidth, etc. of the access network and prepaid service for the access network. A usage quota (GSU) is set (S416).

Here, the IM-SCP determines that the access network is the WiBro network through the WLAN value of the Service-Context-ID, and sets a prepaid service usage quota corresponding to the WiBro network.

Thereafter, the IM-SCP sends a message to the A-server, for example, a CCA [Initial] message, to lower the prepaid service usage quota (GSU) to which the prepaid balance reservation is allocated for the requested service unit (RSU). Transfer to the server (S417).

That is, the IM-SCP includes the prepaid service usage quota (GSU) set for the WiBro network in the CCA [initial] message, which is a response to the CCR [initial] message, which is a prepaid service initiation request message, and transmits it to the A-server. Of course, a reception time for receiving a prepaid service update message that is not a prepaid service usage quota may be set, or both may be set in combination.

At this time, if the service ID (eg, data service, etc.) indicating the service type is omitted in the CCR [Initial] message, the IM-SCP may use the service ID for WiBro defined in the CCA [Initial] message (eg, Data service XXX) can be stored and transmitted.

As shown in FIG. 6, the CCA [Initial] message includes a billing process such as Result-Code AVP indicating an AVP information such as a processing result (for example, CCA message level), periodic charging (Initial Request = 1), and the like. Granted-Service-Unit (GSU) 610 representing AVP information for a set prepaid service usage quota (GSU) such as CC-Request-Type AVP indicating AVP information about period, data service, etc. CC-Total-Octets indicating AVP information about the service, Service-Identifier AVP indicating AVP information about the service ID such as data service (XXX), Interim cycle time (for example, sending a CCR [Update] message from the A-server) Validity-Time 620 indicating the AVP information for the message repetitive transmission period, such as the period).

As can be seen, IM-SCP in the present invention is to set the prepaid service usage quota (GSU) of the parameters included in the CCA [initial] message that is a response to the CCR [initial] message sent to the A-server By setting at least one of the parameter 610 or the parameter 620 which sets the transmission period of the prepaid service update message (CCR [Update]) transmitted from the A-server, it may be generated between the IM-SCP and the A-server. The overhead of prepaid service update messages can be reduced.

The A-server receives the CCA [Initial] message from the IM-SCP, and downloads the prepaid service usage quota (GSU) set according to the prepaid balance reservation processing in the SCP for the requested service unit (RSU). By allowing the corresponding data service as much as the usable packet size according to CC-Total-Octets (open), the ACR can perform the necessary routing (S418).

For example, if a prepaid subscriber's prepaid balance is insufficient due to prepaid balance reservation processing, SCP may cause the remaining prepaid balance to be allocated that GSU in IM-SCP, and the IM-SCP may indicate a FUI indicating the CCA message level. It can be notified that it is the last GSU by setting the Final Unit Action (FUA) of (Final Unit Indication) to 'Terminate' and responding to the A-server. If there is no prepaid balance remaining for the service, the GSU will not be allocated.

Next, the FUI (Final Unit Indication) indicating the use of the service by the available packet size for the GSU set by the IM-SCP or the set Interim cycle time elapsed, and the A-Server indicating the CCA message level from the IM-SCP. While the FUA (Final Unit Action) does not receive a CCA message set to 'terminate', the update process is performed.

In the updating process, the A-server transmits a prepaid service update message, that is, a CCR [Update] message, to the IM-SCP to request an update of the data service (S420).

Here, the CCR [Update] (Credit Control Request [Update]) message is a message for requesting a prepaid balance update for Credit Control (prepaid balance management) during the update process among the CCR messages (prepaid balance management request message). It is intended to reduce overhead of CCR [Update] message transmitted from A-server of WiBro network by setting GSU differently for each access network or setting Interim cycle time for the access network in IM-SCP.

In the CCR [Update] message, as shown in FIG. 7, Service-Context-ID 710 indicating service context ID attribute value pair (AVP) information such as WLAN.08.450.7.32252@3gpp.org, and periodic charging (Update). CC-Request-Type AVP which indicates AVP information about the cycle of billing process, such as Request = 2), and is used together with a session ID for distinguishing one session. CC-Request-Number AVP indicating AVP information to be provided (INITIAL_REQUEST, EVENT_REQUEST increases by 0, then 1 by UPDATE_REQUEST), and Subscription- indicating AVP information about the subscriber ID such as subscriber number (MSISDN = 821030101815). Requested-Service-Unit (RSU) indicating AVP information for requested data service (RSU) such as Id Data AVP, data service, etc. Used Service Unit (USU) CC-Total-Octets indicating AVP information for used packet size , data Service-Identifier AVP indicating the AVP information for the service ID such as the service XXX is included.

Thereafter, the IM-SCP requests and responds to the prepaid balance inquiry and prepaid balance reservation of the corresponding prepaid subscriber similarly to steps S412 to S415 (S421 to S424).

Upon receipt of the Reserve Response from the SCP, the IM-SCP checks the access network information with reference to the Service-Context-ID parameter content 710 of the CCR [Update] message shown in FIG. 7 and considers the QoS, bandwidth, etc. of the access network. To set the prepaid service usage quota (GSU) for the access network (S425).

Here, the IM-SCP confirms that the access network is the WiBro network through the WLAN value of the Service-Context-ID, and sets a prepaid service usage quota (GSU) corresponding to the WiBro network. Interim cycle time, which is a transmission period, may be set according to a corresponding access network, and GSU setting and interim cycle time setting may be complex.

Thereafter, the IM-SCP sends a CCA [Update] message to the A-server to lower the prepaid service usage quota (GSU) allocated to the prepaid balance reservation for the requested service unit (RSU) to the A-server (S426). ).

That is, IM-SCP uses the prepaid service usage quota (GSU) or interim cycle time set in consideration of the QoS and bandwidth of the WiBro network in the CCA [Update] message, which is a response message to the CCR [Update] message, which is a prepaid service update message. Include it and send it to the A-server.

At this time, for a case where a service ID (eg, data service, etc.) indicating a service type is omitted in a CCR [Update] message, IM-SCP uses a service ID for WiBro (eg, a service ID defined in a CCA [Update] message). , Data service XXX) can be stored and transmitted.

As illustrated in FIG. 8, the CCA [Update] message includes a result processing code such as Result-Code AVP indicating AVP information such as a processing result (for example, CCA message level), periodic charging (Update Request = 2), and the like. Granted Representation of AVP information for the set Prepaid Service Usage Quota (GSU), such as CC-Request-Type AVP indicating AVP information for period, CC-Request-Number AVP indicating AVP information for periodic billing serial number, data service, etc. Service-Unit (GSU) 810, CC-Total-Octets indicating AVP information about the available packet size, Service-Identifier AVP indicating Inter-P information for service IDs such as data service (XXX), Interim cycle time Validity-Time 820 indicating AVP information for a message repetition transmission period such as (eg, CCR [Update] message transmission period in an A-server).

As such, when the A-server receives the CCA [Initial] message from the IM-SCP and downloads the prepaid service usage quota (GSU) set according to the prepaid balance reservation processing in the SCP for the requested service unit (RSU), The corresponding data service is opened again as much as the usable packet size according to CC-Total-Octets for the TBTM terminal so that the ACR can perform the necessary routing (S418).

Next, while the A-server does not receive a CCA message set by the FUA (Final Unit Action) indicating the CCA message level from the IM-SCP to 'Terminate', the updating process (S420 to S426) is repeated. This update process is performed when the service usage has elapsed or the set interim cycle time has elapsed for the available packet size for the GSU set by the IM-SCP.

When the A-server receives a CCA message in which the FUA (Final Unit Action) indicating the CCA message level is set to 'terminate' from the IM-SCP, a termination process (S430 to S433) is finally performed. Even when a request for termination of service is received from the TBTM terminal of the prepaid subscriber, termination processes S430 to S433 are performed.

The A-server sends a CCR [Terminate] message to the IM-SCP and requests the termination of the data service (S430). The CCR [Terminate] (Credit Control Request [Terminate]) message corresponds to a message for requesting a prepaid balance deduction for credit control (prepaid balance management) during the termination of the CCR message (prepaid balance management request message).

Upon receiving the CCR [Terminate] message, the IM-SCP sends a message requesting the prepaid subscriber's prepaid balance deduction to the SCP, for example, Debit Request [Debit] (S431). As a result, SCP deducts a fee for the amount of packets used from the prepaid balance of the prepaid subscriber and updates the available packet size.

After the IM-SCP receives a response message for the result of deducting the prepaid balance from the SCP, for example, Debit Request [Cost information] (S432), information about the total amount of use of the managed data service and the total data usage is received. The use of the prepaid service of the TBTM terminal is terminated by transmitting a CCA [Terminate] message to the A-server on the basis of step S433. The CCA [Terminate] (Credit Control Answer [Terminate]) message corresponds to a message that responds to the prepaid balance deduction for credit control (prepaid balance management) during the termination of the CCA message (prepaid balance management response message).

FIG. 9 is a flowchart illustrating an operation of setting a prepaid service usage quota when a TBTM terminal of a prepaid subscriber accesses a WCDMA network.

As shown in FIG. 9, an initialization process (S910 to S918), an update process (S920 to S926), and an end process (S930 to S933) are performed between the GGSN, the IM-SCP, and the SCP.

In detail, first, in the initialization process, when an idle TBTM terminal accesses a WCDMA network to start prepaid service, that is, request a real-time prepaid data service (S910), GGSN uses IM-SCP. The CCR [Initial] message is transmitted to request real time prepaid balance deduction (S911).

As shown in FIG. 10, the CCR [Initial] message includes a Service-Context-ID 1010 indicating periodic information on service context ID AVP (APP), such as PS.08.450.7.32251@3gpp.org, and Initial Charge. Subscription-Id Data AVP representing AVP information for subscriber ID such as Credit Control (Request-Type) AVP, subscriber number (MSISDN = 821030101815), etc. , Requested-Service-Unit (RSU) indicating AVP information for requested data service (RSU) such as data service, etc., Service-Identifier AVP indicating AVP information for service ID such as data service (XXX), and the like. .

Next, IM-SCP sends a message Remains Request [Get] to search the prepaid balance of the prepaid subscriber to the SCP (S912), and SCP receives the prepaid subscriber through the prepaid subscriber information included in the Remains Request [Get]. The available prepaid balance information is checked, the available packet size is calculated using the prepaid balance information, and is included in the response message Remains Response [Account] to be transmitted to the IM-SCP (S913).

Accordingly, the IM-SCP sends a message requesting prepaid balance reservation for the requested service unit (RSU) via the CCR [Initial] message, for example, Reserve Request [Reserve] to the SCP ( S914), and receives a Reserve Message Result Response for the reservation request indicating that a prepaid balance reservation has been made from the SCP (S915).

The IM-SCP checks that the access network is the WCDMA network with reference to the PS value of the Service-Context-ID parameter content 1010 of the CCR [Initial] message shown in FIG. 10 and considers the QoS, bandwidth, etc. of the WCDMA network. In step S916, a prepaid service usage quota (GSU) is set for the WCDMA network.

Thereafter, the IM-SCP sends a CCA [Initial] message to the GGSN to lower the prepaid service usage quota GSU to which the prepaid balance reservation is allocated for the requested service unit RSU (S917).

That is, the IM-SCP includes the prepaid service usage quota (GSU) set for the WCDMA network in the CCA [initial] message, which is a response to the CCR [initial] message, which is a prepaid service initiation request message, and transmits it to the GGSN. Here, in order to reduce the overhead of the prepaid service update message, the prepaid service usage quota (GSU) is set for the WCDMA network. However, the reception time for receiving the prepaid service update message may be set.

As shown in FIG. 11, a CCA [Initial] message includes a result-code AVP indicating an AVP information such as a processing result (for example, CCA message level), a charging process such as periodic charging (Initial Request = 1), and the like. Granted-Service-Unit (GSU) 1110 indicating AVP information on the set prepaid service usage quota (GSU) such as CC-Request-Type AVP indicating AVP information on period, data service, etc. CC-Total-Octets representing AVP information, Service-Identifier AVP representing AVP information for service ID such as data service (XXX), Interim cycle time (for example, CCR [Update] message transmission cycle in GGSN) and Validity-Time 1120 indicating AVP information for the same message repetition transmission period is included.

IM-SCP in the present invention is a prepaid service update message transmitted from the GGSN to IM-SCP by setting the GSU parameter or Validity-Time parameter constituting the CCA [initial] message in consideration of the QoS, bandwidth, etc. of the WCDMA network The overhead caused by CCR [Update] message can be reduced.

When the GGSN receives the CCA [Initial] message from the IM-SCP and downloads the prepaid service usage quota (GSU) set according to the prepaid balance reservation processing in the SCP for the requested service unit (RSU), the CC is assigned to the corresponding TBTM terminal. The data service is allowed as much as the available packet size according to Total-Octets (open), so that the RAN (Radio Access Network) in the WCDMA network can perform necessary routing (S918).

For example, if a prepaid subscriber's prepaid balance is insufficient due to prepaid balance reservation processing, SCP may cause the remaining prepaid balance to be allocated that GSU in IM-SCP, and the IM-SCP may indicate a FUI indicating the CCA message level. (Final unit action) of the (Final Unit Indication) can be set to 'terminate' to respond to the GGSN to notify that the last GSU. If there is no prepaid balance remaining for the service, the GSU will not be allocated.

Next, the FUA of the Final Unit Indication (FUI) indicating that the use of the service has elapsed or the set Interim cycle time has elapsed for the GSU set by the IM-SCP, and the GGSN indicates the CCA message level from the IM-SCP. While (Final Unit Action) does not receive a CCA message set to 'Terminate', the update process takes place.

In the update process, the GGSN requests an update of the data service by transmitting a prepaid service update message, that is, a CCR [Update] message, to the IM-SCP (S920).

As shown in FIG. 12, the CCR [Update] message includes a Service-Context-ID 1210 indicating a service context ID AVP information such as PS.08.450.7.32251@3gpp.org, periodic charging (Update Request = 2), and the like. CC-Request-Type AVP that indicates AVP information for the same billing process cycle, and used together with a session ID to distinguish one session to provide a unique value for CC (credit-control) messages (INITIAL_REQUEST , EVENT_REQUEST is 0, then increments by 1 from UPDATE_REQUEST) Subscription-Id Data AVP indicating AVP information for subscriber ID such as CC-Request-Number AVP indicating subscriber information, subscriber number (MSISDN = 821030101815) Requested-Service-Unit (RSU) indicating AVP information about requested data service (RSU) such as service, USU (Used Service Unit) CC-Total-Octets indicating AVP information about used packet size, data service (XXX) Same as) And the like Service-Identifier AVP AVP indicating information on a service ID.

Thereafter, the IM-SCP requests and responds to the prepaid balance inquiry and prepaid balance reservation of the corresponding prepaid subscriber similarly to steps S912 to S915 (S921 to S924).

Upon receiving the Reserve Response from the SCP, the IM-SCP checks that the access network is the WCDMA network by referring to the PS value of the Service-Context-ID parameter content 1210 of the CCR [Update] message shown in FIG. 12, and determines the QoS of the WCDMA network. In consideration of the bandwidth, the prepaid service usage quota (GSU) for the WCDMA network is set (S925).

Furthermore, the IM-SCP may not only set a prepaid service usage quota (GSU) corresponding to the WCDMA network, but also set an interim cycle time, which is a transmission period for transmitting a prepaid service update message, in consideration of the QoS and bandwidth of the WCDMA network. The GSU setting and the interim cycle time setting can be made complex.

Thereafter, the IM-SCP transmits a CCA [Update] message to the GGSN to lower the prepaid service usage quota (GSU) to which the prepaid balance reservation is allocated to the GGSN for the requested service unit (RSU) (S926).

As illustrated in FIG. 13, the CCA [Update] message includes a result processing code such as Result-Code AVP indicating AVP information such as processing result (for example, CCA message level), periodic charging (Update Request = 2), and the like. Granted Representation of AVP information for the set Prepaid Service Usage Quota (GSU), such as CC-Request-Type AVP indicating AVP information for period, CC-Request-Number AVP indicating AVP information for periodic billing serial number, data service, etc. Service-Unit (GSU) 1310, CC-Total-Octets indicating AVP information about available packet size, Service-Identifier AVP indicating Inter-P Interval Cycle Time for Service ID such as Data Service (XXX) Validity-Time 1320 indicating AVP information for a message repetition transmission period such as (eg, CCR [Update] message transmission period in GGSN).

As such, when the GGSN receives the CCA [Initial] message from the IM-SCP and downloads the prepaid service usage quota (GSU) set according to the prepaid balance reservation processing in the SCP for the requested service unit (RSU), the corresponding TBTM terminal Re-enable the corresponding data service by the available packet size according to CC-Total-Octets, so that the RAN in the WCDMA network can perform necessary routing (S926).

Next, while the GGSN does not receive from the IM-SCP a CCA message with a FUA (Final Unit Action) indicating the CCA message level set to 'Terminate', the update process (S920 to S926) is repeated, This update process is performed when the service usage has elapsed or the set interim cycle time has elapsed for the available packet size for the GSU set by the IM-SCP.

When the GGSN receives a CCA message in which the FUA (Final Unit Action) indicating the CCA message level is set to 'terminate' from the IM-SCP, a termination process (S930 to S933) is finally performed. Even when a request for termination of service is received from the TBTM terminal of the prepaid subscriber, termination processes S930 to S933 are performed.

The GGSN sends a CCR [Terminate] message to the IM-SCP and requests the termination of the data service (S930).

Upon receiving the CCR [Terminate] message, the IM-SCP sends a Debit Request [Debit] requesting the prepaid balance of the prepaid subscriber to the SCP (S931). As a result, SCP deducts a fee for the amount of packets used from the prepaid balance of the prepaid subscriber and updates the available packet size.

When the IM-SCP receives a Debit Request [Cost Information], which is a response message for the result of deducting the prepaid balance from the SCP (S932), the IM-SCP sends the GGSN to the GGSN based on information on the total amount of use of the managed data service and the total data usage. The use of the prepaid service of the TBTM terminal is terminated by transmitting a CCA [Terminate] message (S933).

In addition, the prepaid service usage quota setting process through the WIFI network can be made between ASN-GW, IM-SCP and SCP, the prepaid service usage quota for the WIFI network through the operation process as shown in Figs. GSU) Furthermore, the transmission period of CCR [Update] message, which is a prepaid service update message transmitted from ASN-GW to IM-SCP, can be set, and the overhead of prepaid service update message between ASN-GW and IM-SCP can be reduced. .

In the prepaid service usage quota setting process through the WIFI network, messages transmitted and received between ASN-GW, IM-SCP, and SCP are transmitted in the WiBro network shown in FIG. 4 and in the WCDMA network shown in FIG. The same as the message as described, the internal parameter of each message and the content inserted into the parameter may be the same or different.

According to the present invention, a method and system for setting a prepaid service usage quota for each access network for a terminal supporting a plurality of heterogeneous networks may be modified and applied in various forms within the scope of the technical idea of the present invention, and are not limited to the above embodiments. Do not. In addition, the embodiments and drawings are merely for the purpose of describing the contents of the invention in detail, not intended to limit the scope of the technical idea of the invention, the present invention described above is common knowledge in the technical field to which the present invention belongs As those skilled in the art can have various substitutions, modifications, and changes without departing from the spirit of the present invention, it is not limited to the embodiments and the accompanying drawings. And should be judged to include equality.

1 illustrates a system for setting a pre-paid service usage quota for each access network according to an embodiment of the present invention.

FIG. 2 shows an embodiment configuration for the IM-SCP shown in FIG. 1.

3 is a flowchart illustrating a method for setting a prepaid service usage quota for each access network according to an embodiment of the present invention.

4 is a flowchart illustrating an operation of setting a prepaid service usage quota when a TBTM terminal of a prepaid subscriber accesses a WiBro network.

FIG. 5 shows an information scheme included in a CCR [Initial] message transmitted from the A-server to the IM-SCP in the initialization process of FIG. 4.

FIG. 6 illustrates an information scheme included in a CCA [Initial] message received by the A-server from the IM-SCP during the initialization process of FIG. 4.

FIG. 7 illustrates an information scheme included in a CCR [Update] message transmitted from the A-server to the IM-SCP during the update process of FIG. 4.

FIG. 8 illustrates an information scheme included in a CCA [Update] message received by the A-server from the IM-SCP during the update process of FIG. 4.

FIG. 9 is a flowchart illustrating an operation of setting a prepaid service usage quota when a TBTM terminal of a prepaid subscriber accesses a WCDMA network.

FIG. 10 illustrates an information scheme included in a CCR [Initial] message transmitted by the GGSN to IM-SCP during the initialization process of FIG. 9.

FIG. 11 illustrates an information scheme included in a CCA [Initial] message received by the GGSN from IM-SCP during the initialization process of FIG. 9.

FIG. 12 illustrates an information scheme included in a CCR [Update] message transmitted by the GGSN to IM-SCP during the update process of FIG. 9.

FIG. 13 illustrates an information scheme included in a CCA [Update] message received by the GGSN from IM-SCP during the update process of FIG. 9.

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

140: IM-SCP

150: SCP

210: receiver

220: confirmation unit

230: setting unit

240: transmitter

Claims (11)

Receiving a prepaid balance management request message for a requested prepaid service from a terminal supporting a plurality of heterogeneous networks; Checking access network information that transmits the prepaid balance management request message among the heterogeneous networks; Establishing a pre-paid service usage quota (GSU) for the access network; And Transmitting a response message including the prepaid service usage quota set to the access network so that the prepaid balance management request message can be received after the available packet size is provided to the terminal with respect to the prepaid service usage quota. Method of setting a pre-paid service usage quota for each access network comprising a. The method of claim 1, The setting step And setting a prepaid service usage quota for the access network in consideration of a predetermined Quality of Service (QoS) for each of the plurality of heterogeneous networks. The method according to claim 1 or 2, The setting step And setting a prepaid service usage quota for the access network in consideration of the plurality of heterogeneous network bandwidths. The method according to claim 1 or 2, The checking step is The prepaid service usage quota setting method for each access network confirms the access network information through the information included in the prepaid balance management request message. The method according to claim 1 or 2, The plurality of heterogeneous networks A method of setting a prepaid service usage quota for each access network that is a prepaid service capable network including a WIFI network, a WiBro network, a WCDMA network, a CDMA network, and a PSTN network. Receiving a prepaid balance management request message for a requested prepaid service from a terminal supporting a plurality of heterogeneous networks; Checking access network information that transmits the prepaid balance management request message among the heterogeneous networks; Setting a transmission period for transmitting the prepaid balance management request message in the access network; And Transmitting a response message including the set transmission period to the access network so that the prepaid balance management request message can be received after the prepaid service is provided and a time corresponding to the transmission period has elapsed. Method of setting a pre-paid service usage quota for each access network comprising a. The method of claim 6, The setting step The prepaid service usage quota setting method according to the access network sets the transmission period in consideration of the predetermined QoS for each of the plurality of heterogeneous networks. 8. The method according to claim 6 or 7, The setting step The prepaid service usage quota setting method for each access network setting the transmission period in consideration of the plurality of heterogeneous network bandwidths. A receiver for receiving a prepaid balance management request message for a prepaid service requested from a terminal supporting a plurality of heterogeneous networks; A confirmation unit for confirming access network information transmitting the prepaid balance management request message among the plurality of heterogeneous networks; A setting unit for setting a prepaid service usage quota (GSU) for the access network; And A transmitter for transmitting a response message including the prepaid service usage quota set so that the prepaid balance management request message can be received after the available packet size is provided to the terminal with respect to the prepaid service usage quota. Prepaid service usage quota setting system for each access network comprising a. 10. The method of claim 9, The setting unit The prepaid service usage quota setting system for each access network sets a prepaid service usage quota for the access network in consideration of a predetermined QoS or bandwidth for each of the plurality of heterogeneous networks. 11. The method according to claim 9 or 10, The setting unit Further set a transmission period for transmitting the prepaid balance management request message in the access network, The transmitting unit And a pre-paid service usage quota setting system for transmitting the response message to the access network, the response message further comprising a transmission period of the prepaid balance management request message.

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