KR20130013316A - Method and system for providing data limit service in mobile communication system, mobile management entity for data limit service - Google Patents

Abstract

PURPOSE: A data limit service method, a system thereof, and a mobile services switching center for a data limit service are provided to block a data call in an MME(Mobility Management Entity) in case limit is expired when a data limit service subscriber uses a data service in an LTE(Long Term Evolution)/EPC(Evolved Packet Core) network. CONSTITUTION: A receiver(302) receives changed payment system information of a terminal device from a subscriber server. A service processing unit(300) determines whether a call of a terminal device is connected or not based on the received changed payment system information. In case the call of the terminal device is connected, the service processing unit performs a call deletion request to an SGW(Serving GateWay). A message generating unit(304) generates a call deletion request message with the control of the service processing unit. A transmitter(308) transmits the generated call deletion request message to the SGW. [Reference numerals] (300) Service processing unit; (302) Receiver; (304) Message generating unit; (306) Rate system information DB; (308) Transmitter

Description

METHOD AND SYSTEM FOR PROVIDING DATA LIMIT SERVICE IN MOBILE COMMUNICATION SYSTEM, MOBILE MANAGEMENT ENTITY FOR DATA LIMIT SERVICE}

The present invention relates to a mobile communication service, in particular, when a data limit subscriber reaches a data service limit in a Long Term Evolution (LTE) / Evolved Packet Core (EPC) network including an Evolved Universal Terrestrial Radio Access Network (EUTRAN). The present invention relates to a data limit service method and system in a mobile communication system suitable for performing data service blocking for a corresponding subscriber, and a mobile communication switching center for data limit service.

3rd Generation Partnership Project (3GPP) mobile communication systems based on Wideband Code Division Multiple Access (WCDMA) radio access technology are widely deployed around 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. Reduced cost per bit, increased service availability, the use of flexible frequency bands, simple structure and open interface, and adequate power consumption of the terminal are demanding requirements. In addition, the prevention of unnecessary latency in the network node and the efficient use of network resources can also promote the technology evolution in 3GPP.

In 3GPP Release 8, a network architecture called EPC is described as one of the mobile communication systems for meeting the aforementioned requirements. EPC is a set of network nodes for 3GPP LTE (Long Term Evolution) system. EPC has evolved the core network of the existing 3GPP system architecture to support Evolved UMTS Terrestrial Radio Access Network (EUTRAN), which is an evolved RAN, and to improve the efficiency of packet networks. It has an efficient network structure that simplifies. A wireless communication system including an EPC and an EUTRAN is called an evolved packet system (EPS).

The EPC network is largely divided into three logical entities: Packet Data Network Gateway (PDNGW), Serving GW (SGW), and Mobility Management Entity (MME).

First, in the user plane, the PDNGW is a global mobility anchor for mobility between 3GPP access technology and non-3GPP access technology (such as CDMA2000, WiMAX, or WIFI) and a gateway to an external network. And routing information with the SGW and external network for session control and packet as a user plane service that interwork with external Internet network and non-3GPP network, and provide tunneling and IP routing functions. Have

Next, as another user plane entity, the SGW is a mobility anchor for mobility between 3GPP accesses (E-UTRAN, UTRAN, GERAN). SGW is a session control and user plane node that handles payload traffic according to the established session, interworking with eNodeB and S1-U interface, and supports Inter LTE / 3GPP handoff.

Next, the MME is a control plane entity that is responsible for mobility management of user equipment (UE) moving between different EUTRAN eNodeBs, and is also responsible for session management.

Meanwhile, in the conventional 3GPP standard mobile communication network, the data limit service subscriber controls the corresponding session in the online charging server (OCS) that provides the limit service based on real-time billing information. The session is forwarded to the PDNGW, which terminates the call.

In addition, in WCDMA network, SCPN defined Service Control Point (SCP) in order to block and delete new call of subscriber whose data limit has expired.

Korean Registered Patent No. 695100 (announced on March 14, 2007)

As described above, when the subscriber using the data limit service in the LTE network is used to expire the data limit, unnecessary resource consumption is additionally generated since the call must be deleted by querying the OCS after opening the call to PDNGW. Since the session must be managed continuously, there was a problem that consumes more network resources.

Accordingly, an embodiment of the present invention provides a data limit service method and system and a data limit in a mobile communication system capable of blocking a data call at an MME terminal when the data limit service subscriber expires when using a data service in an LTE / EPC network. A mobile communication switching center may be provided for the service.

In addition, the embodiment of the present invention, if the data service limit expires by performing the limit management based on the billing data of the data limit service subscriber in the LTE / EPC network, after changing the plan information of the subscriber, the changed plan information In the mobile communication system capable of delivering to the MME terminal a block for an ongoing data call or a new data call, the mobile communication system may provide a data limit service method and system, and a mobile communication switching center for data limit service.

According to an embodiment of the present invention, a subscriber server when a terminal of a data limit service subscriber (UE) at a mobile communication switching center (MME) reaches a data usage limit or exceeds a limit while performing a data service through a mobile communication system. And receiving the changed plan information of the terminal device from the (HLR / HSS), and determining whether the terminal device is connected to the call based on the received changed plan information and performing call connection control.

In the process of performing the call access control, when a call of the terminal device is connected, a call deletion request message may be transmitted to a serving gateway device (SGW).

The process of performing the call access control may include checking whether the changed plan information of the terminal device is stored in the plan information DB when the new call connection of the terminal device is confirmed, and when the result of the check is stored. The method may include blocking a call connection based on the changed plan information.

The process of performing the call access control may include checking whether the changed plan information of the terminal device is stored in the plan information DB when the new call connection of the terminal device is confirmed, and when the confirmation result is not stored. The method may further include requesting and receiving plan information of the terminal device from the subscriber server and blocking a call connection based on the received changed plan information.

In the receiving of the changed plan information, a packet data network gateway device (PDNGW) generates billing data based on the data usage of the terminal device, and accumulates the billing data in a billing unit to reach or exceed the limit of data usage. The time limit message may be transmitted to the subscriber information DB, the subscriber plan DB may change the plan of the terminal device, transfer the changed plan information to the subscriber server, and transfer the changed plan information from the subscriber server.

In one embodiment of the present invention, a mobile communication switching center (HLR / HSS) is used when a terminal (UE) of a data limit service subscriber reaches or exceeds a data usage limit while performing a data service through a mobile communication system. Determining whether a call is connected to the terminal device based on the received charge plan information received from the receiving unit and the changed plan information received from the terminal device, and deletes the call to the serving gateway device (SGW) when the call of the terminal device is connected. And a service processor for performing a request, a message generator for generating a call deletion request message under the control of the service processor, and a transmitter for transmitting the generated call deletion request message to the serving gateway device.

When the new call connection of the terminal device is confirmed, the service processing unit checks whether the changed plan information of the terminal device is stored in the plan information DB. You can block the connection.

When the new call connection of the terminal device is confirmed, the service processor determines whether the changed plan information of the terminal device is stored in the plan information DB. Request and receive the plan information of the device, and can block the call connection based on the changed plan information received.

The receiving unit generates charging data based on the data usage of the terminal device in the packet data network gateway device PDNGW, and accumulates the charging data in the charging unit to subscribe to a message exceeding the limit when the data usage limit is reached or exceeded. And transmits the changed plan information to the subscriber server by changing the plan of the terminal device in the subscriber information DB, and transmitting the changed plan information from the subscriber server.

In one embodiment of the present invention, a data limit service system includes a packet data network gateway device (PDNGW) for generating at least one billing data based on data service usage of a terminal (UE) of a data limit service subscriber, and the billing data. A billing unit (BS) for performing limit management based on the limit and generating an over limit message when the limit of data usage is reached or exceeded; and when the over limit message is received from the billing unit, a charge plan of the terminal device is changed. A subscriber server (HLR / HSS) that transmits the subscriber information DB for generating the changed plan information and the changed plan information to a mobile communication switching center (MME), and provides the plan information of the corresponding terminal device in response to a request of the mobile communication switching center. And the call connection of the terminal device based on the changed plan information It may include the mobile switching center that performs connection control.

When the call of the terminal device is connected, the mobile communication switching center may transmit a call deletion request message to a serving gateway device (SGW).

When the new call connection of the terminal device is confirmed, the mobile communication switching center checks whether the changed plan information of the terminal device is stored in the plan information DB, and if it is stored, based on the changed plan information, You can disconnect the call.

When the new call connection of the terminal device is confirmed, the mobile communication switching center checks whether the changed plan information of the terminal device is stored in the plan information DB. The terminal may request and receive the plan information of the terminal device and block the call connection based on the received changed plan information.

In the present invention, effects obtained by representative ones of the disclosed inventions will be briefly described as follows.

The present invention, when the limit of the data limit service subscriber in the LTE / EPC network to prevent the call establishment and OCS interworking to the PDN-GW end, and the ongoing data call and new data limit of the subscriber in the data limit expired MME based on the changed plan information By controlling the data limit call by deleting the call, it is possible to prevent unnecessary consumption of network resources.

1 is a block diagram illustrating a data limit service system in a mobile communication system according to an embodiment of the present invention;
2 is a flowchart illustrating a data limit service control procedure in a mobile communication system according to an embodiment of the present invention;
3 is a schematic structural block diagram of a mobile communication switching center for a data limit service according to an embodiment of the present invention;
4 is a flowchart illustrating an operation procedure of a mobile communication switching center for a data limit service according to an embodiment of the present invention.

Advantages and features of the present invention, and methods of achieving the same will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as 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 scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like numbers refer to like elements throughout.

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.

According to an embodiment of the present invention, when the data service limit expires by performing limit management based on billing data of the data limit service subscriber in the LTE / EPC network, after changing the plan information of the corresponding subscriber, the changed plan information is transferred to the MME group. By transmitting to the MME stage to block the ongoing data call or new data call.

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

1 is a block diagram illustrating a data limit service system in a mobile communication system according to an embodiment of the present invention.

Referring to FIG. 1, a User Equipment (UE) 100, an eNode B (eNB) 102, a Mobile Management Entity (MME) 106, a Serving Gateway (SGW) 110, and a Packet Data Network Gateway (PDNGW) (112), Node B (NB) 104, Serving General Packet Radio Service (GPRS) Support Node (GPRS) 108, Offline Charging System (OFCS) 118, Online Charging System (OCS) 116, Policy & Charging Rule Function (PCRF) (114), Home Location Register (HLR) / Home Subscriber Server (HSS) (10), Packet Data Network (Internet) (1), Billing System (120) ), The subscriber information DB 122, and the like.

As shown in FIG. 1, the UE 100 is a subscriber station, and is a group of multimedia terminal devices for providing a data service or a data limit service having a preset limit to a subscriber according to an embodiment of the present invention. The device group may include various types of terminal devices such as a smart phone, a notepad, a tablet computer, and the like.

The UE 100 may provide a broadband communication service to a subscriber by interfacing to a broadband connection through an eNB 102 or an NB 104 to be described later, and support WCDMA-based third generation or more generations of communication. It is possible to provide a broadband communication service including both an environment, for example, a communication environment such as LTE / EPC or mobile World Interoperability for Microwave Access (WIMAX), and an Internet Protocol (IP) based communication environment such as the Internet.

The PDN 1 is a packet data network and may include, for example, the Internet. Here, the Internet includes various services existing in the TCP / IP protocol and its upper layers, namely, HyperText Transfer Protocol (HTTP), Telnet, File Transfer Protocol (FTP), Domain Name System (DNS), and Simple Mail Transfer Protocol (SMTP). It can refer to a global open computer network architecture that provides Simple Network Management Protocol (SNMP), Network File Service (NFS), and Network Information Service (NIS).

The HLR / HSS 10 may be collectively referred to as a subscriber server as a home location register and a home subscriber server, and is a network node including a database containing subscriber information for a wireless communication system. And location related data, plan information, and the like.

The eNB 102 is an EUTRAN access base station equipment, and may perform functions such as RF transmission and reception of a transmission signal, signal strength and quality measurement, baseband signal processing, and channel card resource management.

The NB 104 is a UTRAN access base station equipment, and may perform functions such as RF transmission and reception of a transmission signal, signal strength and quality measurement, baseband signal processing, and channel card resource management.

The MME 106 is an EUTRAN access mobile communication switching station that is in charge of signal control between the eNB 102 and the SGW 110 to be described later. The MME 106 determines where to route incoming data from the UE 100. In addition, the mobile station may serve to manage subscriber information and mobility of the UE 100, session management, idle subscriber management, paging, and subscriber authentication.

The MME 106 may receive the information from the HLR / HSS 10 when the plan information of the UE 100 subscribed to the subscriber limit service is changed, and the data about the UE 100 based on the changed plan information. If the call is currently in progress, the call deletion request message may be transmitted to the SGW 110 to delete the call in progress.

In addition, when a new call connection is attempted from the UE 100, the MME 106 queries the plan information of the UE 100 to the HLR / HSS 10, which is the subscriber server, and receives the changed plan information. Based on the information, new call access can be blocked or deleted.

The SGSN 108 is a UTRAN access mobile communication switching center that determines where to route incoming data from the UE 100, and manages subscriber information and mobility of the UE 100, session management, idle subscriber management, It can play the role of paging, subscriber authentication function, etc.

The SGW 110 is a serving gateway device that manages mobility of the UE 100 between the eNB 102 and the second eNB, between the 3GPP network and the EUTRAN, and processes a payload traffic according to an established session. Control functions can be performed. In addition, the SGW 110 interworks with the eNB 102, supports handover between LTE / 3GPP, sets up the PDNGW 112 and the EPS bearer, and uses PDU (Packet Data) using tunneling. It can play the role of delivering unit).

The PDNGW 112 is a packet data network gateway device for allocating IP of the UE 100 and controlling sessions interworking with the PDN 1 and the Non-3GPP network. The PDNGW 112 includes a SGW 110 and a PDN 1 for packet service. It maintains routing information and can perform tunneling and IP routing functions. In addition, the PDNGW 112 may serve to deliver the PDU to the SGW 110 and the PDN 1.

As described below, the PDNGW 112 may generate charging data (CDR) of the UE 100 subscribed to the data limit service. In this case, the charging data may be generated according to a predetermined data unit such as packet, MB, or data service time slot, and the generated charging data may be transmitted to the charging unit 120.

The OCS 116 is an online billing processing device, and may receive a billing information of a subscriber requiring real-time billing information and provide a credit management function such as a limit service.

OFCS 118 is a billing processing device that collects the billing information generated by the PDNGW 112, processes the billing data required by the billing unit 120 and transmits. The OFCS 118 may accommodate various billing protocols such as Radius, Diameter, and GTPP to provide a unified billing (BS) interface.

The PCRF 114 is a charging policy rule processing apparatus. The PCRF 114 may provide dynamic QoS and charging rules according to a service data flow to perform communication policy and charging processing in a communication network. .

The charging unit 120 may accumulate data for each subscriber UE that subscribes to the data limit service based on the charging data received from the PDNGW 112, and determine whether the accumulated data reach or exceed the usage limit. . In this case, when one of the subscriber UEs reaches or exceeds the usage limit, the subscriber UE may serve to transmit the limit limit message to the subscriber information DB 122.

On the other hand, the billing unit 120 may not transmit the limit exceeded message to the subscriber information DB 112 only when the limit is reached or exceeded. That is, when the amount of data usage is exceeded in a predetermined unit (for example, 50 MB, 10 MB unit of usage amount or remaining data service amount, etc.), an excess limit message may be generated to inform the information about this.

For example, when the subscriber of the data limit service subscribes to the limit of 500 MB, and the data usage exceeds 450 MB, the limit information message (including 450 MB in use or 50 MB remaining information) is sent from the charging unit 120 to the PDNGW ( 112, to the MME 106 via the SGW 110.

Accordingly, the MME 106 may transmit the limit information message to the UE 100 so that the subscriber of the UE 100 may check data usage to date.

The subscriber information DB 122 may receive a message exceeding the limit due to reaching or exceeding the data usage of any one subscriber UE from the billing unit 120, in which case the subscriber's plan A is converted into a plan A '. It may change and transmit the changed plan information to the HLR / HSS (10).

2 is a flowchart illustrating a data limit service control procedure in a mobile communication system according to an embodiment of the present invention.

Referring to FIG. 2, in step 200, the MME 106 allocates an IP to the terminal device through SGW 110 and PDNGW 112 and EPS bearer or IP tunnel, and provides data service to the UE. Will be performed.

Accordingly, when the terminal device subscribed to the data limit service performs the data service, the PDNGW 112 generates charging data (CDR) for each preset data unit (eg, packet, MB, etc.) or for each time zone. The billing data is transferred to the billing unit 120.

In step 204, the charging unit 120 accumulates data based on the charging data received from the PDNGW 112, and determines whether the accumulated data reaches or exceeds the usage limit.

If the usage limit is reached or exceeded, in step 206, the exceeded limit message is transmitted to the subscriber information DB (112). However, if the terminal device does not reach the previously subscribed data limit, the terminal proceeds to step 208 to continuously monitor whether the limit is reached.

On the other hand, if the subscriber information DB 112 receives the over-limit message from the billing unit 120 in step 112, change the plan (A) of the data limit over-service subscribers to the plan (A) and this is HLR (HSS) ( 10) will be notified. In step 212, the HLR 10 applies the changed plan to the subscriber and transfers the changed plan to the MME 106.

Accordingly, the MME 106 determines whether to delete the call for the subscriber whose data limit expires based on the changed plan information received from the HLR 10 in step 214.

The method of determining whether to delete a call for a subscriber whose data limit expires in the MME 106 will be described in detail with reference to FIGS. 3 to 4.

3 is a schematic structural block diagram of a mobile communication switching center for a data limit service according to an embodiment of the present invention.

Referring to FIG. 3, the MME 106, which is a mobile communication switching center, may include a service processor 300, a receiver 302, a message generator 304, a plan information DB 306, a transmitter 308, and the like. .

In detail, the receiver 302 may receive the changed plan information of the subscriber whose data service limit has expired from the HLR / HSS 10 that is the subscriber server, and transmit the received changed plan information to the service processor 300.

The service processor 300 may perform call deletion through control of a call connection when a subscriber UE 100 whose data service limit has expired is currently connected to a data call or a call connection is attempted.

The message generator 304 may generate a bearer setup request and an IP allocation request message delivered to the SGW 110 under the control of the service processor 300, and in particular, may generate a delete request message for a call in progress to the PDNGW. have.

When the service processor 300 receiving the changed plan information from the HLR / HSS 10 requests storage, the plan information DB 306 may temporarily store the changed plan information during a preset time or procedure. .

The transmitter 308 transmits a message generated through the message generator 304 to the SGW 110 and the PDNGW 112, and may transmit a message such as a bearer setup request, an IP allocation request, and a call deletion request.

4 is a flowchart illustrating an operation procedure of a mobile communication switching center for a data limit service according to an embodiment of the present invention.

Referring to FIG. 4, in step 400, the MME 106, which is a mobile communication switching center, receives the changed plan information due to reaching or exceeding the data limit of the subscriber UE 100 subscribing to the data limit service from the HLR 10.

In step 402, the subscriber UE 100 determines whether a data call is currently in progress. When the data call is in progress, the process proceeds to step 404 and transmits a call deletion request message to the SGW 110 requesting the deletion of the corresponding call to the SGW 110.

However, if the corresponding subscriber UE 100 is not currently performing a data call in step 402, the UE 100 determines whether a new call is introduced. In case a new call flows, the process proceeds to step 408 to confirm whether to save the changed plan information of the subscriber UE 100 through a search of the plan information DB 306, and if the changed plan information is stored, step 410. Proceed to check whether the data service is terminated based on the plan information and delete the new data call.

However, if the changed plan information is not stored in the plan information DB 306 in step 408, the process proceeds to step 412 to query the plan information to the subscriber UE 100 to the HLR 10 to receive the changed plan information. In step 414, the terminal determines whether the data service ends through the changed plan information of the subscriber UE 100, and deletes the new data call.

As described above, in the embodiment of the present invention, when the data service limit expires by performing the limit management based on the billing data of the data limit service subscriber in the LTE / EPC network, the plan information of the subscriber is changed and then changed. The plan information is transmitted to the MME to block the ongoing or new data call in the MME.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the scope of the appended claims, and equivalents thereof.

As described above, in the mobile communication system according to the present invention, the data limit service method and system, and the mobile communication exchange station for data limit service, open a call to the PDN-GW end when the limit of the data limit service subscriber in the LTE / EPC network expires. And preventing the OCS interworking and controlling the data limit call by deleting the ongoing data call and new call of the data limit expired subscriber in the MME based on the changed plan information, thereby providing data limit service in the LTE / EPC network. It is suitable for preventing unnecessary consumption of network resources during control.

10: HLR or HSS 100: UE 106: MME
110: SGW 112: PDNGW 120: billing
122: subscriber information DB

Claims (13)

When the terminal of the data limit service subscriber (UE) of the mobile communication switching center (MME) reaches or exceeds the data usage limit while performing data service through the mobile communication system, the terminal device from the subscriber server (HLR / HSS) Receive your changed plan information,
Determining whether a call is connected to the terminal device based on the received changed plan information to perform call connection control;
Data limit service method in a mobile communication system comprising a. The method of claim 1,
The process of performing the call connection control,
And transmitting a call deletion request message to a serving gateway device (SGW) when the call of the terminal device is connected. The method of claim 1,
The process of performing the call connection control,
When the new call connection of the terminal device is confirmed, checking whether the changed plan information of the terminal device is stored in a plan information DB;
The process of blocking call access based on the changed plan information, if the result of the confirmation is stored.
Data limit service method in a mobile communication system comprising a. The method of claim 1,
The process of performing the call connection control,
When the new call connection of the terminal device is confirmed, checking whether the changed plan information of the terminal device is stored in a plan information DB;
If it is not stored as a result of the check, requesting and receiving plan information of the terminal device from the subscriber server;
Blocking call access based on the received changed plan information
Data limit service method in a mobile communication system comprising a further. The method of claim 1,
The process of receiving the changed plan information,
The packet data network gateway device (PDNGW) generates billing data based on the data usage of the terminal device, accumulates the billing data in the billing unit, and sends a message exceeding the limit when the data usage limit is reached or exceeded to the subscriber information DB. And changing the plan of the terminal device in the subscriber information DB to transmit the changed plan information to a subscriber server, and transmitting the changed plan information in the subscriber server. Data Limit Service When a UE of a subscriber reaches a data usage limit or exceeds a limit while performing a data service through a mobile communication system, the terminal device UE receives changed plan information of the terminal device from a subscriber server (HLR / HSS). Receiving unit,
A service processor configured to determine whether a call is connected to the terminal device based on the changed plan information and to perform a call deletion request to a serving gateway device (SGW) when the call of the terminal device is connected;
A message generator for generating a call deletion request message under the control of the service processor;
Transmitter for transmitting the generated call deletion request message to the serving gateway device
A mobile communication switching center for a data limit service comprising a. The method according to claim 6,
The service processing unit,
When the new call connection of the terminal device is confirmed, check whether the changed plan information of the terminal device is stored in the plan information DB.
The mobile communication switching center for the data limit service, characterized in that the call connection is blocked based on the changed plan information, if it is stored. The method according to claim 6,
The service processing unit,
When the new call connection of the terminal device is confirmed, check whether the changed plan information of the terminal device is stored in the plan information DB.
If the check result is not stored, the subscriber server requests and receives the plan information of the terminal device.
And a call connection is blocked based on the received changed plan information. The method according to claim 6,
The receiver may further comprise:
The packet data network gateway device (PDNGW) generates billing data based on the data usage of the terminal device, accumulates the billing data in the billing unit, and sends a message exceeding the limit when the data usage limit is reached or exceeded to the subscriber information DB. And changing the plan of the terminal device in the subscriber information DB to transmit the changed plan information to a subscriber server, and transmitting the changed plan information from the subscriber server. A packet data network gateway device (PDNGW) for generating at least one billing data based on the data service usage of the terminal (UE) of the data limit service subscriber;
A billing unit (BS) which performs limit management based on the billing data and generates a limit exceeded message when the limit of data usage is reached or exceeded;
A subscriber information DB that generates a changed plan information by changing a plan of the terminal device when the limit message is received from the billing unit;
A subscriber server (HLR / HSS) for transmitting the changed plan information to a mobile communication switching center (MME) and providing plan information of the corresponding terminal device in response to a request of the mobile communication switching center;
The mobile communication switching center determining whether a call is connected to the terminal device based on the changed plan information and performing call connection control;
Data limit service system in a mobile communication system comprising a. The method of claim 10,
The mobile communication switching center,
When the call of the terminal device is connected, the data limit service system in the mobile communication system, characterized in that for transmitting a call deletion request message to the serving gateway device (SGW). The method of claim 10,
The mobile communication switching center,
When the new call connection of the terminal device is confirmed, check whether the changed plan information of the terminal device is stored in the plan information DB.
The data limit service system of the mobile communication system, characterized in that the call connection is blocked on the basis of the changed plan information, if the check result is stored. The method of claim 10,
The mobile communication switching center,
When the new call connection of the terminal device is confirmed, check whether the changed plan information of the terminal device is stored in the plan information DB.
If the check result is not stored, the subscriber server requests and receives the plan information of the terminal device.
The data limit service system of the mobile communication system, characterized in that to block the call connection based on the received changed plan information.

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