KR20030092936A - Apparatus for generating chargeable data of SGSN(Serving GPRS Support Node) subsystem inner GPRS(General Packet Radio Service) network - Google Patents

Abstract

PURPOSE: An apparatus for generating charging data in an SGSN(Serving GPRS Support Node) subsystem in a GPRS(General Packet Radio Service) network is provided to minimize the load of charging processing by creating charging data and transmitting the created data to a CGF(Charging Gateway Function) through Ga interface between SGSN-CGFs in the case of modifying an S-CDR(SGSN-Call Detail Record) and an M-CDR(Mobility-Call Detail Record), without connecting existing subscriber charging data. CONSTITUTION: An apparatus for generating charging data in an SGSN subsystem in a GPRS network comprises an SSMB(SGSN Session Management Block)(100), a PMMB(Packet Mobility Management Block)(200), an SGHB(SGSN GTP Handling Block)(300), an SDMB(SGSN Database Management Block)(400), and an SCGB(500). The SSMB(100) executes a session function. The PMMB(200) executes mobility management, and generates an M-CDR creation request message when a detach occurs in a handover. The SGHB(300) processes a GTP protocol, and generates an S-CDR creation request message in deleting a PDP(Packet Data Protocol) context. The SDMB(400) manages the data generated in the SGSN subsystem. The SCGB(500), connected with the SSMB(100), the PMMB(200), the SGHB(300), and the SDMB(400), creates charging data through a received charging data creation request message and a database storing charging information, encodes the created data, and transfers the encoded charging data to the SGHB(300).

Description

Apparatus for generating chargeable data of Serving GPRS Support Node (SGSN) subsystem inner General Packet Radio Service (GPRS) network}

The present invention relates to an apparatus for generating charging data of a Serving GPRS Support Node (SGSN) subsystem in a general packet radio service (GPRS) network, and in particular, charging for the use of SGSN system resources (S-CDR: SGSN-Call Detail Record). And SGSN by generating one billing information without connecting to the existing subscriber billing information when the billing (M-CDR: Mobility-Call Detail Record) changes (QoS change, Tariff time change, mobility change) A billing data generation device of a Serving GPRS Support Node (SGSN) subsystem in a GPRS (General Packet Radio Service) network that reduces the load on billing processing by transmitting to the CGF through a Ga interface between CGFs (Charging Gateway Functions). will be.

In general, GPRS is a European 2.5G mobile phone technology that has been serviced since 2000 in Europe based on European Digital Mobile Phone (GSM). GPRS is a fast-speed technology designed for data transmission that improves GSM's communication rate per channel from 9600bps to 14400bps.

Looking at the conventional billing data generation method in such a GPRS network, how to connect the information to the billing data first generated when the conditions (QoS change, Tariff Time change, mobility change) of the billing data (S-CDR, M-CDR) Billing data is generated at the end of the CDR.

However, this conventional billing data generation method burdens the processors of the SGSN subsystem to increase the amount of work for billing processing, and there is an inefficient use of memory.

Accordingly, the present invention has been proposed to solve various problems occurring in the conventional charging data generation as described above.

An object of the present invention is to change the billing (S-CDR: SGSN-Call Detail Record) for the use of SGSN system resources and the billing (M-CDR: Mobility-Call Detail Record) for mobility management (QoS change, Tariff Time). Change, mobility change) to create a single billing information without connecting to the existing subscriber billing information and transmit it to the CGF via the GaN interface between SGSN-CGF (Charging Gateway Function) to reduce the load on the billing process The present invention provides a charging data generating apparatus of a Serving GPRS Support Node (SGSN) subsystem in a general packet radio service (GPRS) network.

The "billing data generation device of the SGSN sub-system in the GPRS network" according to the present invention for achieving the above object,

An SGSN Session Management Block (SSMB: SGSN Session Management Block) for performing a session function for coordinating and synchronizing communication between functional units;

A packet mobility management block (PMMB) for performing mobility management, and generating a request message to generate a charge related to mobility management (M-CDR) when detach occurs during handover;

It handles the GTP protocol, changes the QoS during the session connection, changes the Packet Data Protocol (PDP) context due to the change of the tariff time, and generates charges (S-CDR) for the use of SGSN system resources when deleting the PDP context. An SGSN GTP Handling Block (SGHB) that generates a request message and generates a Routing Area (RA) update message when a detach occurs during mobility change;

An SGSN database management block (SDMB) for managing data generated by the SGSN subsystem;

It is connected to the SSMB, PMMB, SGHB and SDMB, and includes a SGSN billing integration block (SCGB) for generating billing data through the database storing the received billing request message and billing information, encoding the billing data and then forwarding the billing data to the SGHB. Characterized in that configured.

The SGSN billing integrated block (SCGB), the message transmission and reception processing unit for processing the transmission and reception messages between the SSMB, PMMB and SGHB;

A database access processing unit which performs a database access function for obtaining billing information;

A CDR generation unit for receiving a charge generation request message through the SSMB, PMMB, and SGHB, and generating a charge record using the charge information collected by the database access processor;

The encoding record generated by the CDR generation unit is characterized by consisting of an encoding unit for encoding in the BER format of ASN.1 to deliver to the message transmission and reception processing unit.

1 is a block diagram showing the configuration of an apparatus for generating charging data of an SGSN subsystem in a GPRS network according to the present invention;

2 is a block diagram showing an embodiment configuration of the SCGB of FIG.

3 is a view showing an internal inter-signal signaling procedure in the case of detach in the present invention,

4 is a view showing a new inter-block signaling procedure of the SGSN in the case of inter-RA update and handover in the present invention,

FIG. 5 is a diagram showing an old SGSN inter-block signaling procedure in case of inter RA update and handover according to the present invention;

FIG. 6 is a diagram illustrating an inter-block signaling procedure in the case of PDP context change (QoS, Tariff Time change) according to the present invention.

7 is a diagram illustrating an internal inter-block signaling procedure in the case of deleting a PDP context in the present invention.

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

100 ..... SSMB

200 ..... PMMB

300 ..... SGHB

400 ..... SDMB

500 ..... SCGB

510 ..... message sending and receiving unit

520 DB access processing unit

530 ..... CDR generator

540 ...... Encoding

Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above.

1 is a block diagram showing a configuration of an apparatus for generating charging data of an SGSN subsystem in a GPRS network according to the present invention.

Here, reference numeral 100 denotes an SGSN Session Management Block (SSMB) which performs a session function for coordinating and synchronizing communication between functional units, reference numeral 200 denotes mobility management, and detachment occurs during handover. In this case, a packet mobility management block (PMMB: Packet Mobility Management Block) generating a request message for generating a charge related to mobility management (M-CDR) is indicated. Reference numeral 300 denotes a GTP protocol. When changing PDP (Packet Data Protocol) context due to change of tariff time, when deleting PDP context, request message is generated to generate billing (S-CDR) on the use of SGSN system resources. Shows an SGSN GTP Handling Block (SGHB) that generates a Routing Area (RA) update message.

In addition, reference numeral 400 denotes an SGSN database management block (SDMB) that manages data generated by the SGSN subsystem, and reference numeral 500 is connected to the SSMB, PMMB, SGHB, and SDMB, and receives the charge generation request message and the charging. An SGSN billing integrated block (SCGB) is generated for generating billing data through a database storing information, encoding the billing data, and transferring the billing data to the SGHB.

The operation of the charging data generation device of the SGSN subsystem in the GPRS network according to the present invention configured as described above is as follows.

The SGHB 300 transmits an S-CDR generation request message to the SCGB 500 when a PDP context is changed due to a QoS change, a tariff time change, or a PDP context is deleted during session connection.

In addition, during the mobility change, Detach transmits a routing area (RA) update in the SGHB 300 and an M-CDR generation request message in the PMMB 200 to the SCGB 500 during handover.

Then, the SCGB 500 generates the charging data (S-CDR, M-CDR) through the received charging generation request message and database access, encodes it, and transmits it to the SGHB 300 in the BER format of ASN.1. .

FIG. 2 is a block diagram showing the configuration of one embodiment of the SCGB of FIG.

The SGSN billing integrated block (SCGB) 500 includes a message transmission / reception processing unit 510 for processing transmission / reception messages between the SSMB, PMMB, and SGHB; A database access processing unit 520 which performs a database access function for obtaining billing information; CDR generation unit 530 that receives the charge generation request message through the SSMB 100, PMMB 200 and SGHB 300, and generates a charge record with the charge information collected by the database access processing unit 520 and ; Encoding unit 540 for encoding the billing record generated by the CDR generation unit 530 in the BER format of ASN.1 to the message transmission and reception processing unit 510.

Looking at the operation of each block of the SCGB 500 configured as described above are as follows.

First, the message transmission / reception processing unit 510 includes an SSGH 100 that handles a session function, a PMMB 200 that performs mobility management, a GTP protocol (Gi, Gp interface), and a SGHB (Ga interface) that processes a GTP 'protocol (Ga interface). 300) performs a function of processing a transmission and reception message.

Next, the CDR generation unit 530 collects the charge generation request message and the charge information through the database access, and then performs the function of generating the charge record (S-CDR, M-CDR). Here, the S-CDR generation conditions are the case of PDP context change (QoS change, charge time change), PDP context delete (record delete), and the M-CDR generation conditions are Detach, RA update, and Handover.

Meanwhile, the database access processing unit 520 performs a database access processing function to obtain charging information. Finally, the encoding unit 540 converts the charging record generated by the CDR generation unit 530 into the BER format of ASN.1. Performs the function of encoding.

3 to 7 illustrate signal procedures between the blocks.

FIG. 3 is a diagram illustrating an internal inter-block signaling procedure in the case of detach. When SGHB 300 requests S-CDR generation (Scdr_Request), SGB is generated by SCGB 500 and transmitted to SGHB 300. And a response message for deleting the PDP context to the PMMB 200 (MM_Delete_PDP_Context_Response).

4 is a diagram illustrating a new inter-block signaling procedure between SGSNs in case of inter RA update and handover. When the RA update is confirmed in the PMMB 200, the SCGB 500 requests generation of the charging data M-cdr for mobility management (Mcdr_Request (Update_Mcdr_Request)), and the SCGB 500 charges for the mobility management. Data is generated and transmitted to the SGHB 300 (Cdr_Transfer_Request).

FIG. 5 is a diagram illustrating a signaling procedure between old SGSN internal blocks in case of inter RA update and handover. When the SGHB 300 requests the deletion of the S-CDR to the SCGB 500 (Scdr_Request (Cancel_Request)), the SGBC 500 deletes the S-CDR and transmits a response thereto to the SGHB 300. (Cdr_Transfer_Request) and MM_Cancelloc_Charging_Response to PMMB 200 and transmits a message.

6 is a diagram illustrating an internal inter-block signaling procedure in the case of PDP context change (QoS, Tariff Time change). When the SGHB 300 requests the generation of the CDR for the S-CDR update to the SCGB 500 (Scdr_Request (Update_Scdr_Request)), the SCGB 500 transmits an S-CDR update message to the SGHB 300 ( Cdr_Transfer_Request).

7 is a diagram illustrating an internal inter-block signaling procedure in the case of deleting a PDP context in the present invention. When the SGHB 300 requests Deactivate S-CDR (Scdr_Request (Deactivate_Scdr_Request)), the SCGB 500 performs the processing therefor and transmits the result message to the SGHB 300 (Cdr_Transfer_Request), and the SSMB. Respond to the GTP charges to 100 (GTP_Charging_Response).

According to the present invention as described above, if the change condition occurs when generating the charging information in the GPRS network, there is an advantage that can reduce the workload for the billing processing of SGSN processors by generating the charging information.

In addition, there is an advantage that does not need to use a lot of memory for the billing information.

Claims (2)

In the billing data generator of the SGSN subsystem in the GPRS network, An SGSN Session Management Block (SSMB: SGSN Session Management Block) for performing a session function for coordinating and synchronizing communication between functional units; A packet mobility management block (PMMB) for performing mobility management, and generating a request message to generate a charge related to mobility management (M-CDR) when detach occurs during handover; It handles the GTP protocol, changes the QoS during the session connection, changes the Packet Data Protocol (PDP) context due to the change of the tariff time, and generates charges (S-CDR) for the use of SGSN system resources when deleting the PDP context. An SGSN GTP Handling Block (SGHB) that generates a request message and generates a Routing Area (RA) update message when a detach occurs during mobility change; An SGSN database management block (SDMB) for managing data generated by the SGSN subsystem; It is connected to the SSMB, PMMB, SGHB and SDMB, and includes a SGSN billing integration block (SCGB) for generating billing data through the database storing the received billing request message and billing information, encoding the billing data and then forwarding the billing data to the SGHB. Billing data generation device of the SGSN sub-system in the GPRS network, characterized in that configured to. The method of claim 1, wherein the SGSN billing integrated block (SCGB), A message transceiving processing unit which processes transceiving messages between the SSMB, PMMB and SGHB; A database access processing unit which performs a database access function for obtaining billing information; A CDR generation unit for receiving a charge generation request message through the SSMB, PMMB, and SGHB, and generating a charge record using the charge information collected by the database access processor; And an encoding unit encoding the charging record generated by the CDR generation unit in the BER format of ASN.1 and transmitting the encoding record to the message transmission / reception processing unit.