KR101470750B1 - Apparatus, Method, and Recording Medium for reducing Traffic Load when providing Spending Limit Service - Google Patents

Abstract

The present invention relates to a technology to reduce a traffic load occurring between Policy and Charging Rules Function (PCRF) and Online Charging Server (OCS) when a PCC control operation (hereinafter, spending limit control operation) is performed according to a status change of a charged member in real time through the interworking of the PCRF and the OSC. An apparatus for reducing a traffic load upon a spending limit control according to one aspect of the present invention includes: an OCS for transmitting a first message, which includes credit state change information, expire time information for the state change and activation time information of a real-time charged member, to a PCRF when it reaches the credit threshold of the charged member; the PCRF that selects a PCC rule based on the state change information contained in the first message received from the OCS to transmit a second message, which includes the selected PCC rule and the expire time information or the activation time information contained in the first message, to a PCEF (PGW); and a PCEF that performs a control operation according to the PCC rule if there are the PCC rule and the expire time information in the second message received from the PCRF, stops the control operation according to the PCC rule based on the expire time information, delays the control operation according to the PCC rule if there are the PCC rule and the activation time information in the second message received from the PCRF, and performs the control operation according to the PCC rule based on the activation time information.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus, a method, and a recording medium for reducing a traffic load at the time of spandering limit control,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a spending limit control technique in a mobile communication system, and more particularly, to a technology for controlling a spending limit of a real-time charging subscriber by interworking between Policy and Charging Rules Function (PCRF) To a technique for reducing a traffic load occurring between a PCRF and an OCS in a PCC control operation (hereinafter, referred to as a spandering limit control operation).

In general, the LTE mobile communication system sets a service quality policy and a billing rule for service use, and provides services to terminals according to a set policy and a billing rule. For this purpose, the Policy and Charging Rules Function (PCRF) receives service information from an Application Function (AF) or a Subscription Profile Repository (SPR) And generates a policy and a Charging Control Rule (PCC rule). The PCRF then provides the generated PCC rules to the Policy and Charging Enforcement Function (PCEF). The PCEF then provides the QoS (Quality of Service) service according to the service flow to the terminal based on the PCC rule.

Also, 3GPP TS 29,219 standard describes the PCC control operation, that is, the spandering limit control operation, in accordance with the change of the credit status of the real-time charging subscriber through the interlocking between PCRF and OCS. The real-time charging subscriber is not a general post-paid subscriber but means a subscriber who can purchase a certain amount of prepaid credit like a juvenile fare and use data within the credit limit.

According to the 3GPP TS 29.219 standard, a real-time charging subscriber can not only simply block data usage when a credit is exceeded, but also can control speed and charge according to a change in credit status.

However, 3GPP TS 29,219 standard defines only basic call flow and basic message format for interworking with PCRF according to the change of credit status of real-time charging subscribers. With this function, most of real-time charging subscribers Since the credit status changes to the initialized state at the same time, traffic congestion due to the transmission of the status change message between the PCRF and the OCS may cause serious traffic load problems. For example, if a subscriber with a youth fare of 100,000 is overdone in the current month and the status is initialized after the control month is over in the control operation state, 100,000 state change messages are simultaneously transmitted from the OCS to the PCRF at the time of carryover there is a problem.

In order to solve the above-mentioned traffic congestion problem, it is possible to consider a method of load-balancing the status change report by simply placing an arbitrary window time in the OCS. However, It may happen that it is not real time.

3GPP TS 29.219 "Policy and Charging Control: Spending Limit Reporting over Sy"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a PCC control operation according to a state change of a real-time charging subscriber through interoperation between Policy and Charging Rules Function (PCRF) A method and a recording medium for reducing a traffic load occurring between a PCRF and an OCS during a ding limit control operation.

In order to achieve the above object, an apparatus for reducing a traffic load at the time of controlling a spindle limit according to an aspect of the present invention includes a credit state change information of a corresponding subscriber when a credit threshold of a real-time charging subscriber is reached, An OCS for transmitting a first message including expiration time information or activation time information to the PCRF; And a second message including expiration time information or activation time information in the received first message together with the selected PCC rule based on state change information in the first message received from the OCS, And may include a PCRF for transmission to the PCEF (PGW). If there is an expiration time information together with the PCC rule in the second message received from the PCRF, control is performed according to the PCC rule, and based on the expiration time information And if the activation time information is included in the second message received from the PCRF together with the PCC rule, the control according to the PCC rule is reserved and the corresponding activation And a PCEF for performing a control operation according to the corresponding PCC rule based on time information.

The PCRF can notify control contents according to the selected PCC rule to the subscriber terminal. The notification can use a guidance message such as SMS, for example, and can also notify the charging site information at the time of the notification. The first message and the second message may be a Spam Limit Notification Request (SNR) message and a Re-Authorize Request (RAR) message, respectively.

According to another aspect of the present invention, there is provided a method for reducing a traffic load during spandex limit control, the method comprising: (a) when a credit threshold of a real-time charging subscriber is reached, Transmitting a first message from the OCS to the PCRF, the first message including expiration time information or activation time information for the change; And (b) selecting a corresponding PCC rule based on status change information in the first message received from the OCS in the PCRF, and including expiration time information or activation time information in the received first message together with the selected PCC rule (C) if there is an expiration time information in the second message received from the PCRF in the PCEF (PGW) together with the PCC rule, then the corresponding PCC (PGW) The method further comprising the step of performing control according to the rule and releasing the control operation according to the PCC rule on the basis of the expiration time information, or (d) the second message received from the PCRF in the PCEF If there is the activation time information together with the PCC rule, the control according to the PCC rule is reserved and the control operation according to the corresponding PCC rule is performed based on the activation time information The method comprising the steps of:

The method may further include notifying the subscriber terminal of the control contents according to the PCC rule selected in the step (b) from the PCRF, and the notification may use a guidance message such as SMS, for example, Information can be notified together. The first message and the second message may be a Spam Limit Notification Request (SNR) message and a Re-Authorize Request (RAR) message, respectively.

According to another aspect of the present invention, there is provided a computer-readable recording medium storing a program for causing a computer to execute a method for reducing a traffic load during spindle limit control.

As described above, according to various aspects of the present invention, it is possible to add expiration time information or activation time information for a corresponding state change when a status change message between a PCRF and an OCS is transferred, Even if the change is not informed, the PCEF can return the status of the real-time charging subscriber, thereby greatly reducing the load due to traffic congestion between the PCRF and the OCS.

For example, in 3GPP TS 29.219, a PCC control operation according to a state change is defined by a notification between PCRF and OCS each time a status of a real-time charging subscriber is changed. Considering that most of the charging / Notification above can cause significant traffic load between PCRF and OCS. For example, assuming that a service that performs daily rate control has 100,000 subscribers, 100,000 messages can be simultaneously generated from OCS to PCRF to cancel the speed control at the next day have.

Therefore, in the present invention, unnecessary traffic load between the PCRF and the OCS due to the subscriber state change is eliminated by applying the concept of the expiration time or the activation time to the PCRF-OCS interworking message, and the PCF control PCC control point Control information such as control start or release notification, or charging site information can be notified to the user terminal through the SMS message, thereby maximizing the utilization in spandering limit control.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an apparatus for reducing a traffic load during spindle limit control according to an embodiment of the present invention;
FIG. 2 is a flowchart for explaining a general spindle limit control process;
3 is a flowchart of a method for reducing a traffic load during spandering limit control according to the first embodiment of the present invention,
FIG. 4 is a flowchart of a method for reducing traffic load during spindle limit control according to a second embodiment of the present invention;
5 is a flowchart of a method for reducing a traffic load during spandering limit control according to a third embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals are used to denote like elements in the drawings, even if they are shown in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a block diagram of a device for reducing traffic load during spandering limit control according to an embodiment of the present invention. As shown in FIG. 1, a subscription profile storage (SPR) 210, 220, a PCRF 230, a PCEF 240, an online billing system (OCS) 250, an off-line billing system (OFCS) 260, a Bearer Binding and Event Reporting Function (BSERF) Detection Function < RTI ID = 0.0 > 280 < / RTI >

The Subscription Profile Repository (SPR) 210 includes subscriber profile information (or subscriber information) that is subscription information of subscribers, for example, the type of service licensed to the subscriber, subscription and activation information, (Access point name) information of the subscriber, information on the subscriber category, the total amount of usage allocated to the subscriber (or the total allowable amount) And permanently manages the subscription of the specific service for each subscriber and usage amount of the service for the usage monitoring operation. When the SPR 210 receives the subscriber information inquiry request from the PCRF 230, the SPR 210 transmits the requested subscriber information to the PCRF 230 in response. That is, the SPR 210 is a server having subscriber information permanently and can be provided inside the PCRF 230 according to the situation of a communication carrier.

The application function (AF) 220 is a function that the subscriber stations negotiate a service quality information request such as Voice Over LTE (VoLTE) using a Session Initiation Protocol (SIP) And generates service information using a session description protocol (SDP) to be exchanged. The service information generated by the AF 220 may include an Internet Protocol (IP), a port, a media type, a bandwidth, application information of an application function, . The AF 220 transmits service information to the PCRF 230 after session connection with the PCRF 230, and requests control of the service.

The Policy and Charging Rule Function (PCRF) 230 is for performing QoS and billing control per subscriber through selection of a Policy and Charging Control (PCC) rule. Generally, the Policy and Charging Rule Function 230 exists in a wireless data network. In addition to LTE, WiFi and eHRPD, in cooperation with SPR 210 and AF 220, generates PCC rules for QoS and billing in a heterogeneous network. In other words, the PCRF 230 generates PCC rules based on subscriber (profile) information received from the SPR 210 and service information received from the AF 220. The PCRF 230 may transmit the generated PCC rule to the PCEF 240 upon request of the PCEF 240 and may forward the PCC rule in the PCRF 240 even if there is no request from the PCEF 240 .

When a Spending Limit Notification Request (SNR) message is received from the OCS 250 as a first message, the PCRF 230 selects a PCC rule based on state change information included in the SNR message, (RWR) message to the PCEF (PGW) 240 as a second message including expiration time information or activation time information for the PCC rule.

In addition, the PCRF 230 can notify the user terminal of the control contents such as the control start / cancel notification according to the selected PCC rule through the SMS message, and can include the charging site information in the SMS message.

The PCEF 230 is a device that actually performs QoS and billing control for each subscriber based on the PCC rule information transmitted from the PCRF 230. The PCEF 230 represents a device such as a PDN-GW (PGW) Generates a data billing CDR for each subscriber and transmits it to the billing server, provides a QoS control and billing information control service according to the service flow based on the PCC rule received from the PCRF 230 to the terminal, Can be monitored in real time and reported to the PCRF 230.

The PCEF 240, for example, checks whether or not the expiration time information is included in the RAR message received from the PCRF 230 together with the PCC rule. If there is the expiration time information, the PCEF 240 performs control according to the PCC rule And when the expiration time comes, the control operation according to the PCC rule can be canceled.

As another example, the PCEF 240 may check whether or not the activation time information is included in the RAR message received from the PCRF 230 together with the PCC rule. If there is the activation time information, the PCEF 240 performs control according to the PCC rule It is possible to start the operation and to start the control operation according to the PCC rule when the activation time comes.

The Online Charging System (OCS) 250 is an online charging server for a real-time charging subscriber. The OCS 250 can determine whether to use data based on credit information per subscriber, and interworks with the PCRF 230 through a Sy interface. So that it is possible to control according to the change of the credit status of the subscriber.

For example, when the credit threshold of the real-time charging subscriber is reached, the OCS 250 generates the SNR message as the first message including the credit state change information of the corresponding subscriber and the expiration time information or the activation time information for the state change By transmitting to the PCRF 230, it is possible to control according to the change of credit status of the subscriber.

The offline charging system (OFCS) 260 is an offline charging server for postpaid charging subscribers. It is a charging server for postpaid charging according to data usage, not data availability through real-time credit inquiry.

The Bearer Binding and Event Reporting Function (BBERF) 270 performs binding and QoS control for each bearer in the LTE network and performs an operation of reporting to the PCRF 230 upon occurrence of a specific event And is similar in operation to the PCEF 240, but does not generate a charge.

A TDF (Traffic Detection Function) 280 is a device that discriminates a service by analyzing a pattern of a specific traffic and is generally called DPI (Deep Packet Investigation).

The customer center (IT) (not shown) notifies the SPR 210 of whether or not the subscriber has joined the specific service, the service allowed capacity information (i.e., the total allowable amount information) Is for transmitting a short message to the subscriber terminal according to a request from the PCRF 230, and is the same as the existing IT and SMSC, and thus a detailed description thereof will be omitted.

FIG. 2 is a flowchart for explaining a general spindle limit control process, which is applied to the apparatus of FIG. 1, and thus an example of the operation of the apparatus will be described.

(1) Real-time billing subscribers subscribe to Spending Limit service through Customer Center. The following services are examples of spandering limit services. It is possible to assume a service that provides a small amount of data on a day-by-day basis during data roaming. For example, a data roaming product (hereinafter, referred to as a first data roaming service) in which data roaming at a level of 20 MB per day is available and which is controlled at 10 Kbps only when the amount exceeds 20 MB is assumed. In addition to the data roaming product, the service can be extended to various services using prepaid credit, such as a juvenile fee.

(2) At the time of joining the first data roaming service, the customer center notifies the SPR 210 and the OCS 250 of product subscription corresponding to the subscriber IMSI, and allocates credit for each subscriber. For reference, the credit threshold indicates the data capacity available every day when the first data roaming service is used. In this embodiment, the credit threshold is assumed to be 20 MB. The Policy Counter ID indicates a product name of a spending limit service of a real-time charging subscriber, and distinguishes the corresponding control service when the OCS 250 and the PCRF 230 are interworked.

As described above, when the customer joins the first data roaming service, when the customer attempts to roam data (i.e., data use request) from abroad, the PGW 240 sends a CCR_Init message to the PCRF 230, Inquiry request.

(3) The PCRF 230 requests subscriber-specific information from the SPR 210 to acquire subscriber information and acquires subscriber information. For this, the PCRF 230 and the SPR 210 communicate using a UDR message and a UDA message.

(4) If the subscriber is subscribed to the first data roaming service, the PCRF 230 transmits an SLR (Spending Limit Request) message to the OCS 250 to request the status of the subscriber to the first data roaming service do.

(5) The OCS 250 determines whether the threshold is reached based on the current credit of the subscriber.

(6) If the credit threshold is not reached, the OCS 250 transmits a SLA (Spending Limit Answer) message to the PCRF 230 to request QoS control. That is, the current subscriber has not exhausted 20 MB of data roaming.

(7) The PCRF 230 transfers the CCA_Init message to the PGW 240 and transmits the PCC rule for the first data roaming service.

(8) The PGW 240 queries the OCS 250 for credit for allowing data.

(9) The OCS 250 responds to the inquiry of step (8) by sending the current residual credit and credit inquiry unit threshold value to the PGW 240.

(10) PGW 240 allows use of data roaming without rate limiting.

(11) The subscriber normally uses data roaming without speed limitation.

(12) The PGW 240 periodically performs a credit subtraction operation to the OCS 250 according to subscriber data usage.

(13) The OCS 250 determines whether the data usage amount of the subscriber has reached a credit threshold through a credit subtraction operation requested by the PGW 240. In the case of the first data roaming, the credit is managed as a threshold value of 20MB per day.

(14) The OCS 250 transmits a Spending Limit Notification Request (SNR) message to the PCRF 230 when the credit threshold is reached, thereby notifying the status of the subscriber. That is, in the case of the first data roaming, 20 MB is used (Status).

(15) The PCRF 230 selects PCC rules for QoS and billing change of the subscriber according to the status change of the real-time charging subscriber.

(16) The PCRF 230 delivers the PCC rule selected in step 15 via the RAR message to the PGW 240.

(17) The PCRF 230 conveys a Spending Limit Notification Answer (SNA) message to the OCS 250 and successfully responds to the received SNR message in step (14).

(18) - (19) The PCRF 230 sends SMS to the subscriber terminal via the SMS-GW and the SMSC for notification of the subscriber to the PCC for control and notification of the charging site, . Steps (18) and (19) are not general processes and are newly added processes.

(20) The PGW 240 performs rate control and billing control according to the PCC rules transmitted by the PCRF 230. For example, in the case of the first data roaming service, a 10 Kbps speed control operation is performed.

(21) The PGW 240 continuously performs a credit subtraction operation with the OCS 250 according to the data used by the customer.

(22) If the subscriber control is an operation for a day, the subscriber state change is performed in the OCS 250 to release the subscriber control at the time of the change to the next day. For example, in the case of the first data roaming service plan, 10 Kbps control is performed when the usage is over 20 MB per day, and normal data roaming is permitted within the 20 MB limit when it is the next day.

(23) The OCS 250 transmits the changed subscriber status value to the PCRF 230 through a Spending Limit Notification Request (SNR) message.

(24) The PCRF 230 re-selects the PCC rule according to the changed subscriber status.

(25) The PCRF 230 transfers the changed PCC information to the PGW 240 by loading the changed PCC information in the RAR message. In case of the first data roaming fee, the deletion operation is performed on the previously applied 10 Kbps speed control PCC.

(26) The PCRF 230 transmits a Spending Limit Notification Answer (SNA) message to the OCS 250 and successfully answers the SNR message received in step 23.

(27) The PCRF 230 performs the SMS delivery for the changed PCC rule as if it is a subscriber as in steps (18) and (19).

According to the above-mentioned general spandering limit control process, since most of the pricing services of the spandering limit service operate in time ((day, week, month, etc.)) unit control, a considerable traffic load between PCRF and OCS For example, in the case of the first data roaming plan, if the first data roaming plan subscriber is assumed to be 100,000, the speed is controlled per day, and the steps 22 and 23 and At the same time as the next day, 100,000 SNR messages sent from the OCS to the PCRF can be triggered simultaneously to release the speed control.

The present invention proposes the embodiments of FIGS. 3 to 5 to eliminate the traffic load between the PCRF and the OCS due to the subscriber state change in the general spindle limit control process as shown in FIG.

FIG. 3 is a flowchart of a method for reducing a traffic load during spindle limit control according to the first embodiment of the present invention, and is applied to the apparatus of FIG. 1, so that an example of operation of the apparatus will be described.

(1) First, the basic interworking between the PCRF and the OCS is performed in the same manner as the steps (1) to (13) of FIG. The OCS 250 determines whether the credit threshold of the subscriber is reached through the periodic credit subtraction operation with the PGW 240.

(2) The OCS 250 transmits a Spending Limit Notification Request (SNR) message to the PCRF 230 to inform the subscriber of the status change. At this time, the SNR message includes the (credit) state change information and the Expire Time value for the state change. For example, in the case of the first data roaming plan, the expiration time is delivered to the next day 00:00.

(3) The PCRF 230 performs selection of the PCC rule based on the changed status value of the subscriber, that is, the status change information.

(4) The PCRF 230 loads the expiration time value of the control operation according to the PCC rule and the PCC rule selected in the RAR message, that is, the expiration time value received in step (2) 240). For example, in the case of the first data roaming plan, 10 Kbps speed control is transmitted as the PCC rule and a value of 00:00 on the next day, which is the operation expiration time of 10 Kbps, is transmitted.

(5) The PCRF 230 transmits a Sending Spread Limit Notification Answer (SNA) message to the OCS 250 and successfully responds to the received SNR message in step (2).

(6) to (7) The PCRF 230 sends the SMS and the charge site URL including the PCC control contents to the subscriber terminal via the SMS-GW and the SMSC for notification of the subscriber for the control and notification of the charge site to the corresponding PCC Send SMS.

(8) The PGW 240 performs rate control and billing control from the PCRF 230 according to the PCC rules received in step (4). For example, in the case of the first data roaming service, a 10 Kbps speed control operation is performed.

(9) The PGW 240 continuously performs a credit subtraction operation to the OCS 250 according to the data used by the subscriber.

(10) According to the expiration time information received from the PCRF 230 in step (4), the PGW 240 automatically releases the speed control operation according to the PCC control rule at the time of changing to 00:00 on the next day )do. At this time, if there is a higher PCC control rule of the corresponding PCC control rule to be terminated, the PGW 240 can continuously perform the control operation according to the upper PCC control rule.

(11) (12) Subscribers can use the data without restriction from the following day.

As described above, according to the embodiment of FIG. 3, even if the OCS does not notify the subscriber state change from the OCS to the PCRF at the time of change to the next day, the PGC automatically expires the corresponding PCC operation according to the expiration time information to cancel the speed control . This avoids traffic congestion between PCRF and OCS.

FIG. 4 is a flowchart of a method for reducing a traffic load during spindle limit control according to a second embodiment of the present invention, and is applied to the apparatus of FIG.

(1) First, the basic interworking between the PCRF and the OCS is performed in the same manner as the steps (1) to (13) of FIG. The OCS 250 determines whether the credit threshold of the subscriber is reached through the periodic credit subtraction operation with the PGW 240.

(2) The OCS 250 transmits a Spending Limit Notification Request (SNR) message to the PCRF 230 to inform the subscriber of the status change. At this time, the SNR message includes (credit) state change information and an activation time value (information) for the state change.

(3) The PCRF 230 performs selection of the PCC rule based on the modified status value of the subscriber, that is, the status change information received in step (2).

(4) The PCRF 230 transmits the activation time at which the corresponding PCC rule operates, that is, the activation time information received in step (2), to the PGW 240 in the RAR message together with the PCC rule selected in step (3) do.

(5) The PCRF 230 transmits a Sending Spread Limit Notification Answer (SNA) message to the OCS 250 and successfully responds to the received SNR message in step (2).

(6) The PGW 240 performs a credit subtraction operation in conjunction with the OCS 250 according to the data used by the subscriber.

(7) The PGW 240 automatically performs a speed control operation based on the PCC rules received from the PCRF 230 at the time when the activation time received from the PCRF 230 arrives in step (4).

FIG. 5 is a flowchart of a method for reducing a traffic load during spindle limit control according to a third embodiment of the present invention. FIG. 5 is applied to the apparatus of FIG.

(1) First, the basic interworking between the PCRF and the OCS is performed in the same manner as the steps (1) to (13) of FIG. The OCS 250 determines whether the credit threshold of the subscriber is reached through the periodic credit subtraction operation with the PGW 240.

(2) The OCS 250 transmits a Spending Limit Notification Request (SNR) message to the PCRF 230 to inform the subscriber of the status change. At this time, the SNR message includes the (credit) status change information and the Expire Time value and the activation time value for the status change. For example, in the case of the first data roaming plan, the expiration time is delivered to the next day 00:00. In this embodiment, the activation time value is assumed to be 12:00 noon on the next day.

(3) The PCRF 230 performs selection of the PCC rule based on the changed status value of the subscriber, that is, the status change information.

(4) The PCRF 230 transfers the PCC rule selected in step (3), the expiration time value received in step (2), and the activation time value to the PGW 240 on the RAR message.

(5) The PCRF 230 transmits a Sending Spread Limit Notification Answer (SNA) message to the OCS 250 and successfully responds to the received SNR message in step (2).

(6) to (7) The PCRF 230 sends the SMS and the charge site URL including the PCC control contents to the subscriber terminal via the SMS-GW and the SMSC for notification of the subscriber for the control and notification of the charge site to the corresponding PCC Send SMS.

(8) The PGW 240 performs rate control and billing control from the PCRF 230 according to the PCC rules received in step (4).

(9) The PGW 240 performs a credit subtraction operation in conjunction with the OCS 250 according to the data used by the subscriber.

(10) The PGW 240 automatically releases the speed control operation at the time when the PGW 240 is changed to 00:00 on the next day according to the expiration time information received from the PCRF 230 in step (4).

(11) (12) Subscribers qualitatively use data from the next day without any speed limit.

(13) The PGW 240 performs a credit subtraction operation in cooperation with the OCS 250 according to the data used by the subscriber.

(14) The PGW 240 automatically determines the speed (speed) based on the PCC rule received from the PCRF 230 at the time when the activation time received from the PCRF 230 arrives in step (4) Control operation is performed.

(15) (16) The subscriber is controlled in speed when data is used.

As described above, a method for reducing traffic load during spindle limit control according to various embodiments of the present invention can be implemented as a computer-readable recording medium including program instructions for performing various computer-implemented operations . The computer-readable recording medium may include a program command, a local data file, a local data structure, or the like, alone or in combination. The recording medium may be those specially designed and constructed for the embodiments of the present invention or may be those known to those skilled in the computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floppy disks, and ROMs, And hardware devices specifically configured to store and execute the same program instructions. The recording medium may be a transmission medium such as an optical or metal line, a wave guide, or the like, including a carrier wave for transmitting a signal designating a program command, a local data structure, or the like. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

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.

210: Subscription Profile Repository (SPR)
220: Application Function (AF)
230: Policy and Charging Rules Function (PCRF)
240: Policy and Charging Enforcement Function (PCEF)
250: Online Charging System / Server (OCS)
260: Offline Charging System (OFCS)
270: Bearer Binding and Event Reporting Function (BBERF)
280: TDF (Traffic Detection Function)

Claims (17)

An OCS for transmitting to the PCRF a first message including expiration time information or activation time information for the status change together with the credit status change information of the subscriber when the credit threshold of the subscriber is reached;
Selects a corresponding PCC rule based on the status change information in the first message received from the OCS, and transmits a second message including expiration time information or activation time information in the received first message together with the selected PCC rule to the PCEF PCRF; And
If there is an expiration time information together with the PCC rule in the second message received from the PCRF, performs a control according to the PCC rule and releases the control operation according to the corresponding PCC rule based on the expiration time information A device for reducing traffic load during spandering limit control. delete The method according to claim 1,
If there is the activation time information together with the PCC rule in the second message received from the PCRF, the PCEF reserves the control according to the PCC rule and performs a control operation according to the corresponding PCC rule based on the activation time information Wherein the spindle limit control apparatus includes: The method according to claim 1,
And the PCRF informs the subscriber terminal of the control contents according to the selected PCC rule. 5. The method of claim 4,
Wherein the notification uses a guidance message. ≪ Desc / Clms Page number 13 > 5. The method of claim 4,
And notifies the charging site information at the time of the notification together with the charging site information. The method according to claim 1,
Wherein the first message is an SNR (Spending Limit Notification Request) message. The method according to claim 1,
And the second message is a RAR (Re-Authorized Request) message. (a) transmitting from the OCS to the PCRF a first message including expiration time information or activation time information of the status change with the subscriber's credit status change information when the credit threshold of the subscriber is reached;
(b) selecting a corresponding PCC rule based on state change information in a first message received from the OCS in the PCRF, and including expiration time information or activation time information in the received first message together with the selected PCC rule Transmitting a second message from the PCRF to the PCEF; And
(c) if there is an expiration time information in the second message received from the PCRF together with the PCC rule in the PCEF, control according to the PCC rule is performed and a control operation according to the PCC rule is performed based on the expiration time information Wherein the method further comprises the steps of: delete 10. The method of claim 9,
(d) In the PCEF, if there is activation time information together with the PCC rule in the second message received from the PCRF, the control according to the PCC rule is reserved and the control operation according to the corresponding PCC rule is performed based on the activation time information. Further comprising the step of performing a spandex limit control on the received signal. 10. The method of claim 9,
Further comprising notifying control contents according to the PCC rules selected in the step (b) from the PCRF to the subscriber terminal. 13. The method of claim 12,
Wherein the notification uses a guidance message. ≪ Desc / Clms Page number 20 > 14. The method of claim 13,
And notifying the charging site information at the time of the notification. 10. The method of claim 9,
Wherein the first message is a Spread Limit Notification Request (SNR) message. 10. The method of claim 9,
And the second message is a RAR (Re-Authorized Request) message. A computer-readable recording medium having recorded thereon a program for causing a computer to execute a method for reducing a traffic load during the spandering limit control according to any one of claims 9 to 11.

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