KR20140023715A - Method and apparatus for limit-control account - Google Patents

Abstract

The present invention relates to an apparatus and a method for a charging limit control. The disclosed apparatus for a charging limit control comprises: a request message receiving unit configured to receive a limit confirmation request message for providing a packet data service to a limit established subscriber; a user limit confirming unit configured to generate confirmation result information after confirming whether a use limit that is previously set to correspond to the limit established subscriber is used up; a response message generating unit configured to generate a limit confirmation response message corresponding to a limit confirmation request message, the limit confirmation response message including remaining time to initialize the user limit and the confirmation result information; and a response message transmitting unit configured to transmit the limit confirmation response message generated by the response message generating unit to the gateway. [Reference numerals] (500) Charging limit control apparatus; (510) Request message receiving unit; (520) Usage limit confirming unit; (530) Reply message generating unit; (540) Reply message transmitting unit

Description

METHOD AND APPARATUS FOR LIMIT-CONTROL ACCOUNT [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charge limit management, and more particularly, to a charge limit management apparatus and method for providing a packet data service to a limit setting line.

As is well known, a 3GPP (Third Generation Partnership Project) mobile communication system based on a WCDMA (radio access) technology is widely deployed all over the world. HSDPA (High Speed Downlink Packet Access), which can be defined as the first evolutionary phase of WCDMA, provides 3GPP mobile communication system with highly competitive wireless access technology in the mid-term future.

However, as the requirements and expectations of users and operators continue to increase and competition for developing wireless access technologies continues, there is a need to evolve new technologies in 3GPP mobile communication systems in order to gain competitiveness in the future. Cost reduction per bit, increased service availability, use of flexible frequency band, simple structure and open interface, and proper power consumption of UE (User Element). In addition, prevention of unnecessary latency at the network node and efficient use of network resources can also promote the technology evolution in 3GPP.

3GPP Release 8 describes an Evolved Packet Core (EPC) as a network architecture as one of mobile communication systems for meeting the above-mentioned requirements. EPC is a set of network nodes for 3GPP LTE (Long Term Evolution) system. The EPC evolves the core network of the existing 3GPP system architecture to support Evolved-UMTS Terrestrial Radio Access Network (E-UTRAN), which is an evolved RAN, And has an efficient network structure that simplifies the network node. A wireless communication system including an EPC and an E-UTRAN may be referred to as an EPS (Evolved Packet System) and corresponds to an LTE mobile communication system currently being implemented and serviced in Korea.

The EPC network is divided into three logical entities: a packet data network gateway (PGW), a Serving-GW (SGW), and a Mobility Management Entity (MME).

The PGW acts as a global mobility anchor for mobility between 3GPP access technology and non-3GPP access technology (CDMA2000, WiMAX or WIFI, etc.) and as a gateway to the external network. It also allocates IP (Internet Protocol) And session control in cooperation with a non-3GPP network, and has tunneling and IP routing functions for packet services, and maintains routing information with the SGW and the external network.

SGW is a mobile anchor for mobility between 3GPP access networks (E-UTRAN, UTRAN, GERAN). The SGW performs session control for processing payload traffic according to a set session, interworks with the eNodeB with the S1-U interface, and performs handoff in the LTE mobile communication system and 3GPP User plane entities that support it.

The MME is a control plane entity responsible for mobility management of terminal devices moving between eNodeBs and for session management.

In the initial stage of constructing such an LTE mobile communication system, there is a mixed communication environment with a legacy network such as a WCDMA mobile communication system. In this communication environment, a dual mode (dual mode terminal device can be operated.

In the early stage of the LTE mobile communication service, a WCDMA mobile communication system was used to provide a voice communication service to a dual mode terminal, and an LTE mobile communication system was used to provide a data communication service. On the other hand, VoLTE (Voice over LTE) service uses LTE mobile communication system not only for data communication but also for voice communication.

Meanwhile, the tariff system of the mobile communication service provided by the mobile communication system is provided in various forms according to the demand of the consumer, and the service user can arbitrarily select and use the desired tariff system.

The most common charging system is a method of billing the amount of usage according to the usage time after providing the mobile communication service. Such a fee system has a disadvantage in that it is difficult for the service user to adjust the charge of the mobile communication service by himself / herself.

To overcome this problem, it is a limit setting fee to set a limit of a mobile communication service fee that can be used for a certain period of time, and to enable a mobile communication service within a set mobile communication service charge.

In the LTE mobile communication system, the packet data service for the subscriber of the limit setting rate, that is, the limit setting line, is provided through the call processing between the PGW and the OCS (Online Charging Server).

According to the prior art, the PGW transmits a limit check request message to the OCS when a packet data service is requested from the limit setting line. The OCS transmits a limit acknowledgment message including confirmation result information according to whether the used limit is exhausted to the PGW And the PGW provides or blocks the corresponding packet data service according to the confirmation result information included in the limit acknowledgment message. In this case, the transmission / reception messages between the PGW and the OCS use a CCR (Credit-Control-Request) message and a CCA (Credit-Control-Answer) message.

And, for the mobile communication service of the limit setting fee system, the subscriber database should be changed at a specific time. That is, it initializes the usage limit set corresponding to the limit setting line. For example, regardless of whether a usage limit remains or does not remain at a particular initialization time, depending on the service content or the time of subscription, the usage limit is initialized. During this initialization event, the PGW sends and receives an authentication request (RAR, Re-Auth-Request) message and an RAA (Re-Auth-Answer) message between OCSs.

However, according to the related art, as the limit setting line increases, a large amount of the authentication request message and the authentication response message according to the initialization event occur, which has a problem as a load factor of the network for the mobile communication service and the system resource.

According to an embodiment of the present invention, a charging limit management apparatus and method for initializing a usage limit using a limit check request message and a limit check response message at an initialization event for providing a packet data service to a limit setting line to provide.

The problems to be solved by the present invention are not limited to those mentioned above, and another problem to be solved can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a packet data communication system including: a request message receiving unit for receiving a limit checking request message for providing a packet data service to a limit setting line from a gateway; And a response message generating unit for generating a limit acknowledgment message corresponding to the limit check request message by including remaining time information up to the initialization time of the use limit and acknowledgment result information, And a response message transmitter for transmitting the limit acknowledgment message generated by the response message generator to the gateway.

Here, the response message generator may adjust the reliability hold time information of the limit acknowledgment message according to the remaining time information when the remaining time based on the remaining time information is less than a preset reference time.

The response message generator may match the remaining time information and the reliability hold time information.

The limit check request message may be a CCR message, and the limit check response message may be a CCA message.

According to another aspect of the present invention, there is provided a method for providing a packet data service, the method comprising: receiving a limit checking request message for providing a packet data service on a limit setting line from a gateway; checking whether a preset usage limit is exhausted The method of claim 1, further comprising the steps of: generating acknowledgment result information; acquiring remaining time information until the initialization time of the usage limit; and transmitting the acknowledgment result information and the remaining time information And transmitting the charging limit management information to the gateway.

Here, if the remaining time based on the remaining time information is less than or equal to a preset reference time, the reliability holding time information of the limit checking response message may be adjusted according to the remaining time information.

According to the exemplary embodiment of the present invention, when an initialization event for providing a packet data service for a limit setting line is used, a limit check request message and a limit check response message are used without using an authentication request message and an authentication response message Since the limit can be initialized, the message for the initialization event does not occur in a large amount even if the limit setting line is increased.

Therefore, the traffic for initialization is reduced, thereby reducing the load on the system.

1 is a network configuration diagram illustrating an example of a mobile communication service system capable of employing a billing limit management apparatus according to an embodiment of the present invention.
2 is a block diagram of a billing amount management apparatus according to an embodiment of the present invention.
3 is a flowchart illustrating a billing limit management method by the billing limit management apparatus according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

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

1 is a network configuration diagram illustrating an example of a mobile communication service system capable of employing a billing limit management apparatus according to an embodiment of the present invention. 1 illustrates a case where a WCDMA (Wideband Code Division Multiple Access) mobile communication system 100 operates as a legacy network. The legacy network is used in combination with an LTE (Long Term Evolution) mobile communication system 200 However, the legacy network is not limited to this. For example, other asynchronous mobile communication systems such as GSM (Global System for Mobile) or other synchronous mobile communication systems such as CDMA2000 and the like may be used together with the LTE mobile communication system 200, An example will be described.

The WCDMA mobile communication system 100 includes a Node B 110, an RNC 120, a Mobile Switching Center / Visitor Location Register (MSC / VLR) 130, a CGS 140, (Serving General Packet Radio Service Support Node) 150, a GGSN (Gateway General Packet Radio Service Support Node) 160, a CG (Charging Gateway) 170, and the like.

The Node B 110 and the RNC 120 correspond to a radio access network area and the MSC / VLR 130 and the CGS 140 correspond to a circuit exchange core network. The SGSN 150 and the GGSN 160 exchange packets. Corresponds to the core network.

The NodeB 110 is composed of a plurality of cells, and a plurality of terminal devices can be connected to the cells. The NodeB 110, which is an aggregate of these cells, secures the frequency used for connection with the terminal devices and ensures a stable connection with the terminal devices.

The RNC 120 controls a plurality of NodeBs 110, allocates communication resources to each of the NodeBs 110, and handles functions such as handover.

The MSC / VLR 130 stores visitor location information, receives subscriber profile information, authentication and location related data from the HSS 410, and performs switching control for voice communication.

The CGS 140 serves as a gateway for connecting the WCDMA mobile communication system 100 to the general communication network, and enables communication with other communication systems connected to the general communication network. For example, the CGS 140 serves as a gateway between the circuit network 420 and the MSC / VLR 130 and is connected to the LTE mobile communication system 200 through the IMS 300 connected to the circuit network 420, Thereby enabling circuit communication between the systems 100. This CGS 140 may also be referred to as a GMSC (Gateway MSC) or a gateway exchange.

The SGSN 150 and the GGSN 160 belonging to the packet-switched core network area are connected to an IP network 430 such as the Internet, that is, a packet data network (PDN), to receive a packet- IP-based protocol interworking for matching with

For this, the SGSN 150 is connected to the RNCs 120 to manage the mobility of the mobile communication terminal and the packet session management. The GGSN 150 sets a PDP context with the GGSN 160, And performs the function of transmitting the data unit. Also, the SGSN 160 can perform IP routing and can perform an interaction such as location registration of the mobile communication terminal.

The GGSN 160 directly connects to the IP network 430 and acts as a gateway for connecting the IP network 430 and the packet switched (PS) domain of the WCDMA mobile communication system 100. The SGSN 150, And maintains routing information with the external network, and performs tunneling and IP routing functions.

The CG 170 collects usage time information and usage amount information included in the charging data delivery message received from the SGSN 150 or the GGSN 160, and processes the processed information to the charging server (not shown).

The LTE mobile communication system 200 includes an eNodeB 210, an MME 220, an SGW 230, a PGW 240, a Policy & Charging Rule Function (PCRF) 250 and an OCS 260.

The eNodeB 210 is a device that supports next generation technologies and services such as LTE, and functions as radio frequency (RF) transmission of transmission signals, measurement of signal strength and quality of transmission and reception, baseband signal processing, and channel card resource management . The eNodeB 210 ensures a stable connection with a plurality of terminal devices.

The MME 220 manages mobility of a terminal device, and is responsible for session management, idle subscriber management, paging, and subscriber authentication functions. That is, the MME 220 performs control such as processing a control signal when there is a binding request from the terminal device or another network node, for example, from the PDN GW 240 or the S-GW 230, And receives the subscriber profile information, authentication, and location related data from the HSS 410 to configure the EPS bearer or the IP tunnel and to manage the mobility management. Function.

The SGW 230 is a user plane node that performs session control for processing payload traffic according to a set session and is interworked with an eNodeB 210 through an S1-U interface, And handoffs in the 3GPP 200 and the 3GPP are established and the PGW 240 and the EV bearer (Evolved Packet System bearer) are set and the PDU (Packet Data Unit) is transmitted using the tunneling.

The PGW 240 is a user plane node that assigns an IP of a terminal apparatus and performs session control in cooperation with an external Internet network and a non-3GPP network. The PGW 240 maintains routing information with the SGW 230 and the external network, Tunneling and IP routing functions. And delivers the PDU to the SGW 230 and the external network.

The PCRF 250 provides dynamic QoS and billing rules according to the service data flow to perform communication policies and billing processing in the communication network.

The OCS 260 provides a credit management function for receiving a billing information of a subscriber requiring real-time billing information and providing a packet data service for a limit-setting line. According to the embodiment of the present invention, the OCS 260 transmits a limit check request message and a limit check response message at a time of an initialization event for providing a packet data service to a limit setting line, Device (reference numeral 500 in FIG. 2). Or OCS 260 may be used in conjunction with a billing limit management device (500 in FIG. 2) according to an embodiment of the present invention implemented in a separate and independent form through transmission and reception of a limit check request message and a limit check response message You can also initialize the limit. The billing amount management device will be described below again with reference to FIG.

The IP Multimedia Subsystem (IMS) 300 includes a Call Session Control Function (CSCF) 310, an Inter-working Media Gateway (IMG) 320, and a Home Subscriber Server (HSS)

CSCF 310 is an infrastructure system that performs call processing and performs basic functions for multimedia session control based on SIP (Session Initiation Protocol). The CSCF 310 handles subscriber registration, authentication, billing, triggering and routing by service, inquiry of the location of the called party, compression and release of SIP messages, and can be divided into Proxy_CSCF, Interogating-CSCF and Serving-CSCF according to their roles.

The IMG 320 converts signaling and media for interworking with the LTE mobile communication system 200 connected to the CSCF 310 and the WCDMA mobile communication system 100 connected to the circuit network 420.

The HSS 330 is a network node including a data base including subscriber information for a wireless communication system for the WCDMA mobile communication system 100 and / or the LTE mobile communication system 200, Information, authentication, and location-related data.

In the embodiment of FIG. 1, the WCDMA mobile communication system 100 and the LTE mobile communication system 200 operate the HSS 410 in an integrated manner, and the IMS 300 operates the HSS 330 independently , The WCDMA mobile communication system 100 or the LTE mobile communication system 200 may also operate the HSS as a standalone type. Also, the WCDMA mobile communication system 100, the LTE mobile communication system 200, and the IMS 300 may operate one HSS in an integrated manner.

1, in a communication environment in which the WCDMA mobile communication system 100 and the LTE mobile communication system 200 are mixed, it is possible to access the WCDMA mobile communication system 100 through the NodeB 110, A dual mode terminal device 10 capable of connecting to the LTE mobile communication system 200 can also be operated.

In the early stage of the LTE mobile communication service, a WCDMA mobile communication system 100 is used to provide a voice communication service to a dual mode terminal, and an LTE mobile communication system 200 is used to provide a data communication service. Unlike the above, it is VoLTE (Voice over LTE) service that utilizes the LTE mobile communication system 200 up to voice communication as well as data communication.

2 is a block diagram of a billing amount management apparatus according to an embodiment of the present invention. As shown in the figure, the billing amount management apparatus 500 according to the embodiment includes a request message receiving unit 510, a usage limit checking unit 520, a response message generating unit 530, and a response message transmitting unit 540.

The request message receiving unit 510 receives a limit check request message for providing a packet data service from a gateway such as a PGW to a limit setting line.

The usage limit checking unit 520 checks whether the predetermined usage limit is exhausted corresponding to the limit setting line, and generates the confirmation result information.

The response message generator 530 generates the limit acknowledgment message corresponding to the limit check request message by including the remaining time information up to the initialization time for the use limit and the check result information. For example, the response message generator 530 may generate a limit acknowledgment message in which the reliability retention time information of the limit acknowledgment message is adjusted to be the same as the remaining time information.

The response message transmitter 540 transmits the limit response message generated by the response message generator 530 to the gateway such as the PGW.

3 is a flowchart illustrating a billing limit management method by the billing limit management apparatus according to an embodiment of the present invention.

As shown in the figure, the billing limit management method according to the embodiment includes a step (S601) of receiving a limit check request message for providing a packet data service for a limit setting line from a gateway such as a PGW (S601) (S603) of confirming whether or not the predetermined usage limit has been exhausted to generate confirmation result information, acquiring remaining time information up to the initialization time for the predetermined usage limit (S605), and obtaining remaining time information (S607). If the remaining time information does not meet the preset reference time condition, it is determined whether or not the time value of the reliability hold time information included in the transmitted limit acknowledgment message is equal to the time value of the reliability hold time information (S609) of transmitting a limit acknowledgment message including reliability maintaining time information having a duration A step (S611 to S615) of transmitting a limit acknowledgment message in which the reliability maintaining time information is adjusted to the same as the remaining time information up to the initialization time for a predetermined usage limit when the time information satisfies the predetermined reference time condition, (S617) initializing a usage limit preset at a time point, and receiving another limit check request message from a gateway such as a PGW, the same time value as the time of the reliability hold time information included in the limit check response message transmitted in step S609 A step S619 to S621 of transmitting a limit acknowledgment message including reliability maintaining time information having a time value, and the like.

Hereinafter, a billing limit management method by the billing limit management apparatus according to an embodiment of the present invention will be described in detail with reference to FIG. 1 to FIG.

First, a limit check request message for providing a packet data service is transmitted from the PGW 240 to a limit setting line of the subscriber A, and a billing limit management device 500, which is integrally implemented or interlocked with the OCS 260, The request message receiving unit 510 receives the limit check request message (S601). For example, the limit check request message received in step S601 may be a CCR message transmitted between the PGW 240 and the OCS 260. [

Then, the usage limit checking unit 520 of the billing amount management device 500 confirms whether the predetermined usage limit is exhausted corresponding to the limit setting line, and generates confirmation result information (S603). Herein, the user information of the user database operated by the OCS 260 may include usage limit information for each limit setting line. The usage limit information, which is subtracted according to the use of the packet service by the limit setting line, (520).

Next, the response message generator 530 of the billing amount management device 500 acquires the remaining time information up to the initialization time for the preset usage limit (S605), and the remaining time information satisfies the preset reference time condition (S607). For example, the response message generator 530 can determine whether the remaining time based on the remaining time information is less than or equal to a preset reference time. Here, the reliability hold time included in the transmitted limit acknowledgment message may be the same as the reference time. In this case, the response message generator 530 determines that the remaining time up to the initialization time obtained in step S605 It is possible to judge whether or not it is shorter than the reliability maintenance time included in the limit confirmation response message.

If the remaining time information up to the initialization time does not meet the predetermined reference time condition, the response message generating unit 530 generates a response message having a time value equal to the time value of the reliability hold time information included in the transmitted limit acknowledgment message And generates the limit acknowledgment message including the time information. The generated limit acknowledgment message is transmitted to the PGW 240 by the response message transmitter 540 (S609). For example, if it is determined in step S603 that the predetermined usage limit has been exhausted, the confirmation result information may include a "limit exhaustion" In the limit acknowledgment message transmitted in step S609, the limit acknowledgment message may be a CCA message transmitted / received between the PGW 240 and the OCS 260. The reliability duration may be VT (Validity- Time) parameter. For example, the VT parameter can be set to 10 minutes.

As a result of the determination in step S607, if the remaining time information up to the initialization time meets the predetermined reference time condition, the response message generating unit 530 updates the reliability hold time information of the limit acknowledgment message until the initialization time And transmits the generated limit acknowledgment message to the PGW 240 by the response message transmitter 540 in step S611. For example, if it is determined in step S603 that the predetermined use limit has been exhausted, the confirmation result information may include a "limit exhaustion" identifier, and the VT parameter may be set to 5 minutes.

Next, a limit check request message for providing a packet data service for a new limit check request message, that is, a limit setting line of the subscriber B, may be transmitted from the PGW 240 and received by the OCS 260 (S613 ).

Then, the response message generator 530 of the charging limit management device 500 acquires the remaining time information up to the initialization time for the predetermined usage limit.

The response message generating unit 530 does not perform the same process as in step S607 because the remaining time information already matches the predetermined reference time condition. The response message generating unit 530 does not perform the process of step S607 and stores the reliability holding time information of the limit checking response message in a predetermined usage limit And transmits the generated limit acknowledgment message to the PGW 240 by the response message transmitting unit 540 in step S615. For example, if it is determined in step S603 that the predetermined use limit has been exhausted, the confirmation result information may include a "limit exhaustion" identifier, and the VT parameter may be set to two minutes.

When the initialization time for the predetermined usage limit is reached, the OCS 260 initializes usage limit information for each limit setting line included in the user information of the user database, for example. Here, the initialization process by the OCS 260 is to initialize the usage limit irrespective of whether the usage limit remains or does not remain at a specific initialization time, for example, according to the service content or the joining time. In the case of the residual limit carryover service that adds the remaining usage limit to the usage limit corresponding to the next settlement date when the usage limit remains as of the settlement date, the remaining usage limit is set to the usage limit corresponding to the next settlement date Is initialized.

As described above, if the remaining time information until the initialization time in step S607 meets the predetermined reference time condition, the billing amount management apparatus 500 according to the embodiment of the present invention sends the billing limit management information to the plurality of subscribers The reliability hold time information of the limit acknowledgment message to be transmitted can be sequentially reduced.

Thereafter, when the PGW 240 transmits another limit confirmation request message (for example, a limit confirmation request message for the next period based on the initialization time), the request message receiving unit 510 of the charging limit management apparatus 500 The limit check request message is received (S619).

The response message generator 530 of the charging limit management apparatus 500 then transmits the response message including the reliability hold time information having the same time value as the time value of the reliability hold time information included in the limit acknowledgment message transmitted in step S609 And generates the limit acknowledgment message. The generated limit acknowledgment message is transmitted to the PGW 240 by the response message sender 540 (S621). If the remaining time information up to the initialization time meets the predetermined reference time condition before the execution of step S621, step S607 may be performed and a limit acknowledgment message may be transmitted as in step S611. For example, the limit acknowledgment message transmitted in step S621 may include a "limit allowed" identifier as confirmation result information on the use limit, and the VT parameter may be set to 10 minutes.

Each block of the block diagrams attached hereto and combinations of steps of the flowchart diagrams may be performed by computer program instructions. These computer program instructions may be loaded into a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus so that the instructions, which may be executed by a processor of a computer or other programmable data processing apparatus, And means for performing the functions described in each step are created. These computer program instructions may also be stored in a computer usable or computer readable memory capable of directing a computer or other programmable data processing apparatus to implement the functionality in a particular manner so that the computer usable or computer readable memory It is also possible for the instructions stored in the block diagram to produce a manufacturing item containing instruction means for performing the functions described in each block or flowchart of the block diagram. Computer program instructions may also be stored on a computer or other programmable data processing equipment so that a series of operating steps may be performed on a computer or other programmable data processing equipment to create a computer- It is also possible that the instructions that perform the processing equipment provide the steps for executing the functions described in each block of the block diagram and at each step of the flowchart.

Also, each block or each step may represent a module, segment, or portion of code that includes one or more executable instructions for executing the specified logical function (s). It should also be noted that in some alternative embodiments, the functions mentioned in the blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially concurrently, or the blocks or steps may sometimes be performed in reverse order according to the corresponding function.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

According to an embodiment of the present invention, a usage limit can be initialized using a limit check request message and a limit check response message at an initialization event for providing a packet data service to a limit setting line. Therefore, it can be used in an environment providing a limit service such as a limit setting fee in various mobile communication service systems providing packet data service.

200: LTE mobile communication system 260: OCS
500: charge limit management device 510: request message receiver
520: Usage limit checking unit 530: Response message generating unit
540: Response message transmitter

Claims (6)

A request message receiver for receiving a limit check request message for providing a packet data service to a limit setting line from a gateway,
A usage limit checking unit for checking whether or not the predetermined usage limit is exhausted corresponding to the limit setting line and generating confirmation result information,
A response message generator for generating a limit acknowledgment message corresponding to the limit check request message including the remaining time information up to the initialization time for the usage limit and the check result information;
And a response message transmitter for transmitting the limit check response message generated by the response message generator to the gateway
Billing limit management device. The method according to claim 1,
Wherein the response message generator adjusts the reliability hold time information of the limit acknowledgment message according to the remaining time information when the remaining time based on the remaining time information is less than or equal to a preset reference time
Billing limit management device. 3. The method of claim 2,
Wherein the response message generator is configured to match the remaining time information with the reliability hold time information
Billing limit management device. 4. The method according to any one of claims 1 to 3,
The limit check request message is a CCR (Credit-Control-Request) message, and the limit check response message is a credit-control-answer
Billing limit management device. Receiving a limit check request message from a gateway for providing a packet data service to a limit setting line;
Generating a confirmation result information by confirming whether or not the predetermined usage limit is exhausted corresponding to the limit setting line,
Obtaining remaining time information up to the initialization time for the usage limit;
And transmitting the acknowledgment result information and the remaining time information to the gateway in a limit acknowledgment message corresponding to the limit check request message
How to manage billing limits. 6. The method of claim 5,
When the remaining time based on the remaining time information is equal to or less than a preset reference time, the reliability holding time information of the limit checking response message is adjusted according to the remaining time information
How to manage billing limits.

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