KR200427885Y1 - Apparatus for accounting in portable internet system - Google Patents

Abstract

The present invention relates to a billing apparatus in a portable Internet system. When a state transition of a service occurs such as service generation / change / deletion in a subscriber station as well as periodic billing report, at a timing corresponding to one billing reporting period By transmitting the billing information of all the service flows in progress to the billing server at the same time, it is possible to minimize the loss of billing information while reducing the network load due to the billing message transmission and to perform differentiated billing processing for each service class. It is done.

According to the present invention, it is possible to obtain accurate charging information for subscriber terminals while minimizing the effect on the performance of the entire portable Internet system, and to implement a different charging method for each service class, thereby making more reasonable charging between users and service providers. There is an effect that can be achieved.

WiBro, Control Station, Base Station, Billing, Service Specific, Event, Overload

Description

Charging device in portable internet system {Apparatus for accounting in portable internet system}

1 is a view for explaining a conventional charging method.

2 is a diagram schematically showing the configuration of a portable Internet system to which the present invention is applied.

3 is a diagram illustrating a process of transferring a charging message to a charging server when the conventional charging method is applied to a portable internet system.

4 is a block diagram showing a charging device in a portable internet system according to the present invention.

5 is a view for explaining the operation of the charging device according to the present invention.

6 is a flowchart illustrating a charging method according to the charging device of the present invention.

Explanation of symbols on the main parts of the drawings

200: subscriber station 210: base station

220: control station 230: AAA server

240: home agent 400: charging device

410: billing report timer 420: billing processing unit

430: memory unit 431: charging table

The present invention relates to a billing device in a portable Internet system, and more particularly, to a billing device capable of accurately grasping and reporting the data usage of a subscriber station with minimal impact on the performance of the overall system.

The portable Internet system is an advanced Internet system in a wireless LAN, and unlike the conventional wireless internet, a plurality of service connections can be set for each user, and the system has a characteristic of supporting various service classes for each connection setting.

In the portable Internet system as described above, since the billing data is a data that charges the user, high accuracy is required, and in particular, the billing data is accurately collected because it is used as a basis for future network expansion through traffic analysis. It is very important.

However, the billing data items and billing methods that do not meet the concept of the portable Internet system are not defined yet. The billing methods currently used in the mobile communication system are based on a single service providing method as shown in FIG. In more detail,

1 is a diagram illustrating a conventional charging method, which illustrates a process of transferring a charging message to a charging server when a service is created / deleted at a subscriber station.

In FIG. 1, 'DSA #' means service creation event, DSD # 'means service deletion event,' Start SF # 'means charging start for the corresponding service flow, and' Interim SF # 'indicates service in charge reporting cycle. Charging information about the flow, 'Stop SF #' means the charging termination for the service flow.

For convenience of explanation, it is assumed that the base station periodically generates a charging message in accordance with the charging report period and delivers the charging message to the charging server.

First, when the first service (hereinafter referred to as "first service") is generated at the subscriber station (DSA 1), the base station generates a charging report timer for the first service accordingly and starts charging (Start SF1). In accordance with the reporting period Interim SF1, the billing information for the first service flow is periodically included in the billing message and transmitted to the billing server.

Then, when the first service is deleted in the subscriber station (DSD 1), the base station deletes the charging report timer for the first service and at the same time terminates the charging for the first service (Stop SF1), the data packet provided so far Includes billing information for the billing message and delivers it to the billing server.

Next, when a second service (hereinafter referred to as "second service") is generated at the subscriber station (DSA 2), the base station generates a charging report timer for the second service and starts charging (Start SF2). In accordance with the billing reporting period Interim SF2, the billing information for the second service flow is included in the billing message and transmitted to the billing server.

Then, when the second service is deleted in the subscriber station (DSD 2), the base station deletes the charging report timer for the second service and at the same time terminates the charging for the second service (Stop SF2), the data provided so far The billing information for the packet is included in the billing message and delivered to the billing server.

That is, the conventional billing method assumes that one service is activated at a specific timing, and takes a method of transmitting billing information accordingly, so that the subscriber station can be applied to a portable Internet system that can simultaneously request various kinds of services. There is a problem that it is difficult to do.

In addition, in the conventional billing method, when the billing message containing the billing information for the entire service is lost, billing processing is performed using the billing information included in the billing message transmitted last to minimize the loss of billing information. This causes a difference between the amount of data packets actually provided and the amount of data packets charged, which is unreasonable to the network operator.

In order to prevent the loss of the above billing information, there is a method of obtaining the billing information relatively accurately by shortening the billing reporting period, but in this case, the network overload may occur due to the large number of data packets for counting and billing reporting. There is a problem that there is concern.

In other words, the portable Internet system should have a billing function that accurately identifies and reports the subscriber's usage while minimizing the traffic of the entire network. Since the system has a trade-off relationship between the system traffic and the billing accuracy, It is not desirable to apply the charging method currently used in the mobile communication system to the portable Internet system as it is, and accordingly, there is a need for introducing a charging policy suitable for the portable Internet system.

In addition, in the portable Internet system, since a single subscriber station may request various types of services, a means for managing billing information for each service flow is required.

In other words, the conventional billing method processes billing using only data packet usage and service usage time for the subscriber station. However, in the portable Internet system, various types of services can be provided to each subscriber station, so that billing is performed for each service class. There is a new need for the ability to transmit or collect data.

In conclusion, in the mobile Internet system, it is possible to minimize the loss of billing information and to reduce the network load caused by the billing message transmission, and to charge a fee appropriately according to various service characteristics provided to the subscriber terminal. Means are required.

An object of the present invention is to reduce the network load due to the charging message transmission by allowing the billing report on all service flows in progress at one timing in one billing reporting period in a portable Internet system that provides at least one service at the same time. In addition, to provide a billing device that can accurately identify and report the data usage of the subscriber station.

Another object of the present invention is to record and manage the billing information for each service flow in a unit of session in the portable Internet system that can create a number of services for each user, the billing that can perform the different billing processing for each service class To provide a device.

In order to achieve the above object, a billing device of a portable Internet system according to the present invention is a billing device in a portable Internet system that can provide at least one or more services to a subscriber terminal at a predetermined time, and provides the service from the subscriber terminal. A charging report timer for generating a timing signal according to the charging report period in response to the request; A billing processor configured to provide billing information on at least one service flow in progress to a billing server according to a timing signal of the billing report timer; And a memory unit storing a charging table in which charging information is recorded for each of at least one service flow provided to the subscriber station.

In addition, in order to achieve the above object, a billing device of a portable Internet system according to the present invention is a billing device in a portable Internet system capable of providing at least one or more services to a subscriber station at a predetermined time, the billing device of which is provided from a subscriber terminal. A charging report timer for generating a timing signal according to the charging report period in response to the service providing request; And charging information about the first service periodically provided to the charging server according to the timing signal, and receiving a request for providing a second service from the subscriber station during the first service. It characterized in that it comprises a charging processing unit for providing to the charging server along with the charging information for the first service according to the timing signal.

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

2 is a diagram schematically showing the configuration of a portable Internet system to which the present invention is applied.

As shown in FIG. 2, the portable Internet system includes a portable subscriber station (PSS) 200 and a base station that performs all control functions related to access and services of the subscriber station 200. RAS (210), an access control router (ACR) 220 for controlling the base station 210, and connected to an IP network, authentication, authorization verification and AAA (Authentication Authorization and Accounting) server 230 performing the billing function, and the home agent (HA) 240 for mobility of IP through the IP network network, subscriber terminal 200, base station 210, the function of the control station 220 is summarized as follows.

The subscriber station 200 has a portable Internet wireless access function, an IP-based service access function, an IP mobility function, a terminal / user authentication and security function, a multicast service reception function, and an interworking function with another network.

The base station 210 provides a mobile Internet wireless access function, radio resource management and control function, mobility (handoff) support function, authentication and security function, QoS provision function, downlink multicast function, billing, statistical information generation and notification function. Have

The control station 220 has an IP routing and mobility management function, an authentication and security function, a QoS providing function, an IP multicast function, a charging service providing function, an inter-base station mobility control function, a resource management and control function in the control station. .

In the above description, the subscriber station 200 and the base station 210 communicate with each other using an orthogonal frequency division multiple access (OFDMA) scheme. The OFDMA scheme will be briefly described as follows.

The OFDMA scheme is a multiplexing scheme that combines a frequency division scheme using a plurality of orthogonal frequency subcarriers as a plurality of subchannels and a time division scheme (TDM) scheme, and the OFDMA scheme is essentially generated in a multipath. It is a technology that can provide the mobility of the subscriber station in the portable Internet system, because it is resistant to fading and has a high data rate to obtain an optimal transmission efficiency in high-speed data transmission.

On the other hand, the billing data items and billing methods that meet the concept of the portable Internet system configured as shown in FIG. 2 have not been defined so far, and if the billing method currently used in the mobile communication system is applied to the portable Internet system as follows, As shown in Fig. 3, there is a problem that the billing message transmission amount is increased and thus inefficient.

3 is a diagram illustrating a process of transferring a charging message to a charging server when the conventional charging method is applied to a portable internet system.

In FIG. 2, 'DSA #' means service creation event, 'DSC #' means service change event, DSD # 'means service deletion event, and' Start SF # 'means charging start for the corresponding service flow,' Interim ' SF # 'means charging information of the service flow in the charge reporting cycle, and' Stop SF # 'means charging of the corresponding service flow.

For convenience of explanation, it is assumed that the base station periodically generates a charging message in accordance with the charging report period and delivers the charging message to the charging server.

First, when the first service is generated in the subscriber station (DSA 1), the base station generates a charging report timer for the first service and starts charging (Start SF1), and periodically according to the charging report period (Interim SF1). The billing information for the first service flow is included in the billing message and transmitted to the billing server.

Then, when the second service (hereinafter referred to as "second service") and the third service (hereinafter referred to as "third service") are generated at the subscriber station (DSA 2, DSA 3), the base station may perform the second service and The billing report timers for the third service are respectively generated to start billing (Start SF2, Start SF3), and billing information for the corresponding service is periodically provided according to the billing reporting periods (Interim SF2 and Interim SF3) of each billing report timer. Include in billing message and deliver to billing server.

On the other hand, if the second service is deleted in the subscriber station (DSD 2), the base station deletes the charging report timer for the second service and at the same time terminates the charge for the second service (Stop SF2), the data packet provided so far The billing information for the billing message is included and transferred to the billing server.

Then, the base station delivers the billing information for the current remaining first service and third service to the billing server in accordance with the billing reporting cycle until each service is terminated.

In addition, when the third service is changed in the subscriber station (DSC 3), the base station terminates charging for the third service (Stop SF3), and starts charging for the new third service (Start SF3).

That is, when the billing information is independently transmitted to the billing server according to the billing reporting cycle for each service as well as when the service generation / modification / deletion event occurs as described above, the data packet for billing increases and the traffic to the billing server increases. This concentrated problem arises.

To this end, the billing device of the present invention transmits billing information for all service flows in progress at a time according to one billing reporting cycle to the billing server at the same time as described below, thereby minimizing the loss of billing information. It is possible to reduce the network load due to transmission, and the charging device according to the present invention will be described in more detail below.

4 is a block diagram showing a charging device in a portable internet system according to the present invention.

As shown in FIG. 4, the charging device 400 according to the present invention includes a charging report timer 410 which generates a timing signal according to a charging reporting period in response to a service providing request from the subscriber terminal 200. Memory unit including a billing processing unit 420 for collecting and transmitting the billing information for each service flow in accordance with the timing signal from the billing report timer 410 and a billing table 431 in which billing information is recorded for each service. 430.

In FIG. 4, the charging device 400 may be modularized in any one of the base station 210 or the control station 220 that conforms to the IEEE 802.16 standard shown in FIG. 2. It is assumed that the device 400 is modularized to the base station 210.

When the billing processing unit 420 requests various kinds of services (SVC1, SVC2, SVC3) from the subscriber station 200, the billing processing unit 420 generates sessions for each service, collects billing information for each session, and collects billing information. The AAA server 230 records the charge information on at least one service in progress at the timing of the charging report timer 410, that is, the charging table 431 according to the timing signal of the charging report timer 410, that is, the charging report period. To send).

The timing signal is a signal that is periodically generated according to the charging report period of the charging report timer 410. In the present embodiment, the first to Nth timing signals are sequentially generated at each charging report period at predetermined time intervals. The charging report timing signal is generated, and the timing signal and the charging report timing signal may be understood to have the same meaning.

The billing table 431 is configured in each session unit to perform differentiated billing processing for each service class, and includes a session ID, an IP address of a subscriber station, a billing type, a packet amount and an octet count, a billing start / end It is preferable to include the time, whether or not the timing signal generation of the charging report timer, charging report period information and the like.

That is, the billing device 400 according to the present invention transmits billing information for all services in progress in the timing according to one billing reporting period at a time to the AAA server 230, thereby collecting billing information in the network network. To reduce the load on the system, the billing process can be performed more quickly and easily, and the billing process can be made more reasonable in the mobile Internet system that can create multiple services for each user by performing the billing process differentiated by service class. do.

Hereinafter, the operation of the charging device 400 will be described in more detail with reference to FIG. 5.

5 is a view for explaining the operation of the charging device according to the present invention.

In Figure 5, 'DSA #' is a service creation event, 'DSC #' is a service change event, DSD # 'is a service deletion event,' Start SF # 'is the charging start for the service flow,' Interim SF # 'means charging information for the corresponding service flow, and' Stop SF # 'means charging termination for the corresponding service flow.

First, when the first service flow is generated at time t1 (DSA 1), the charging processing unit 420 generates the charging report timer 410 for the first service flow and at the same time charging start information (Start SF1) of the first service flow. ) Is included in the billing message and forwarded to the AAA server 230.

In more detail, when a new service is requested from the subscriber station 200, the charging processing unit 420 refers to the charging table 431 of the memory unit 430 to determine whether there is a previously generated charging report timing signal. If a new charging report timing signal is needed, the charging report timer 410 is generated for the corresponding service flow.

At this time, the billing report timer 410 generates a timing signal for billing report in the billing report period, the timing signal generated through the billing report timer 410 is set as a reference billing report timing signal.

In other words, the charging processing unit 420 generates the charging report timing signal through the charging report timer 410 for the service requested for the first time in the subscriber station 200, and charges the timing signal of the charging report timer 410 based on the charging. If a different service is requested from the subscriber station 200 after the request timing signal is set, the generated charging report timing signal is recognized as the reference timing signal, and the charging report timing signal is not separately generated for the subsequent service.

The reason for setting the reference charging report timing signal as described above is to transfer the charging information for all the service flows in progress at the same time to the AAA server 230 in accordance with the reference timing signal as described below.

Next, if the charging report timer 410 is informed that the charging report period (Interim) at the time t2, that is, when the first timing signal is generated in the charging report timer 410, the charging processing unit 420 at that timing The billing information Interim SF1 for the first service in progress is included in the billing message and transmitted to the AAA server 230.

Here, the charging information may be charging information in one charging reporting period or total charging information up to the timing, and preferably includes transmission / reception packet amount and octet information of the IP layer for the corresponding service.

Next, when the second service flow is generated at time t3 (DSA 2), the charging processing unit 420 charges the charging start information (Start SF2) of the second service flow and charging information on the first service flow in progress at that timing. Interim SF1 is included in the charging message and transmitted to the AAA server 230.

Then, at time t4 again, the charging report timer 410 informs that it is the charging report period Interim, that is, when the second timing signal is generated in the charging report timer 410, the charging processor 420 determines the timing. The billing information (Interim SF1, Interim SF2) for the first service flow and the second service flow in progress is included in the billing message and transmitted to the AAA server 230.

Next, when the third service flow is generated at time t5, the charging processing unit 420 charges the first service flow and the second service flow in progress at the timing together with the charging start information Start SF3 of the third service flow. Information (Interim SF1, Interim SF2) is included in the billing message and delivered to the AAA server 230.

Next, if the charging report timer 410 again informs that the charging report period Interim at time t6, that is, if a third timing signal is generated in the charging report timer 410, the charging processor 420 may determine the timing. The billing information Interim SF1, Interim SF2, and Interim SF3 of the first service flow, the second service flow, and the third service flow in progress are included in the billing message and transmitted to the AAA server 230.

On the other hand, when the second service flow is extinguished at t7 (DSD 2), the charging processing unit 420 charges termination information (Stop SF2) for the second service flow, and the first service flow and the third service flow in progress at that timing. The billing information for Interim SF1 and Interim SF3 is included in the billing message and transmitted to the AAA server 230.

Next, when the charging report timer 410 again informs that the charging report period Interim is generated at t8, that is, when the fourth timing signal is generated in the charging report timer 410, the charging processor 420 at the timing The billing information (Interim SF1, Interim SF3) of the first service flow and the third service flow in progress are included in the billing message and transmitted to the AAA server 230.

Next, when the third service flow is changed at t9 (DSC 3), the charging processing unit 420 may charge charging end information (Stop SF3) of the third service flow and charging start information (Start SF3) of the newly changed third service flow. In addition, the billing information Interim SF1 for the first service flow in progress at the timing is included in the billing message and transmitted to the AAA server 230.

Next, when the fourth service flow is generated at time t10 (DSA 4), the charging processing unit 420, together with the charging start information Start SF4 of the fourth service flow, activates the first service flow and the first service flow at the timing. 3, the billing information (Interim SF1, Interim SF3) for the service flow is included in the billing message and delivered to the AAA server 230.

Then, at t11 again, the charging report timer 410 informs that the charging report period Interim, that is, if the fifth timing signal is generated in the charging report timer 410, the charging processing unit 420 at that timing The billing information (Interim SF1, Interim SF3, Interim SF4) of the ongoing first service flow, third service flow, and fourth service flow is included in the billing message and transmitted to the AAA server 230.

On the other hand, the charging processing unit 420 is the timing of the charging report timer 410 until all the services on the subscriber terminal 200 is terminated, that is, until there is a request to terminate the service provided to the subscriber terminal 200 to the end The signal is maintained. Accordingly, even if the first service is terminated, charging information regarding another service in progress according to the timing signal of the charging report timer 410 is continuously transmitted to the charging server 230.

In addition, when there is a termination request for the service provided until the last of the provided services, the charging processor 420 may terminate the generation of the timing signal of the charging report timer 410 so that the charging report is no longer made. do.

As described above, the billing device 400 of the present invention, when not only the periodic billing report, but also the state transition of the service occurs, the billing information for all the service flow in progress at that timing in accordance with one billing reporting period It is included in the billing message and transmitted to the AAA server 230, thereby minimizing the loss of billing information while reducing the network load due to the billing message transmission.

In the present embodiment, for convenience of description, the billing report timer 410 is generated based on the first service requested by the subscriber station 200 for the first time, and the timing signal of the billing report timer 410 is referred to as the reference billing report. Although described as setting as a timing signal, it is also possible to set based on the charging report timer of another service, and the charging report timer setting method can be changed according to the charging policy of the network operator.

Hereinafter, the charging method according to the charging device of the present invention will be described in detail with reference to the accompanying drawings.

6 is a flowchart illustrating a charging method according to the charging device of the present invention.

First, when a service generation is requested from the subscriber station 200 (S602), the charging processing unit 420 refers to the charging table 431 stored in the memory unit 430 to determine whether there is a previously generated charging report timing signal. In operation S604, when a new charging report timing signal is required, a charging report timer 410 for a corresponding service flow is generated (S606).

At this time, the billing report timer 410 generates a timing signal for billing report in the billing report period, the timing signal generated through the billing report timer 410 is set as a reference billing report timing signal.

The reason for setting the reference charging report timing signal as described above is to transfer the charging information for all the service flows in progress at the same time to the AAA server 230 in accordance with the reference timing signal as described below.

That is, the charging processor 420 generates a timing signal for the service requested for the first time in the subscriber terminal 200 through the charging report timer 410, and sets the charging report timing signal as the reference charging report timing signal. When another service is requested from the subscriber station 200, the previously generated billing report timing signal is recognized as a reference billing report timing signal, and subsequent billing report timing signals are not separately generated.

In the above description, the subscriber station 200 may request various types of services due to its characteristics. For this purpose, the charging processing unit 420 generates a session for each service to perform differentiated charging processing for each service class, and each session. Collect charging information by unit and record the collected charging information in the charging table 431, and then include the charging information recorded in the charging table 431 in the charging message according to a timing signal of the charging report timer 410 to AAA. Send to server 230.

The billing table 431 is configured for each session unit, and includes a session ID, an IP address of a subscriber station, a billing type, a transmission / reception packet amount and an octal number, a billing start / end time, whether a billing report timer is generated, and billing. It is preferable to include reporting period information and the like.

Next, the charging processing unit 420 includes the charging start information for the newly generated service flow and the charging information for all the service flows in progress at the timing, and transmits the charging message to the AAA server 230 (S608).

Next, if the charging report timer 410 informs that the charging report period (S610), accordingly, the charging processing unit 420 includes the charging information for all service flows in progress at the timing in the charging message AAA server ( 230) (S612).

Here, the charging information may be charging information in one charging reporting period or total charging information up to the timing, and preferably includes transmission / reception packet amount and octet information of the IP layer for the corresponding service.

 Then, when a service change request is requested from the subscriber station 200 (S614), the charging processing unit 420 includes the charging change information and the charging information for all the service flows in progress at the timing in the charging message AAA server 230 (S616).

Then, when the service termination is requested from the subscriber terminal 200 (S618), the charging processing unit 420 includes the charging end information and the charging information for all the service flows in progress at the timing to include in the charging message AAA server 230 In step (S620).

The charging message transmission continues until all services on the subscriber terminal 200 are terminated (S622). For this purpose, the charging processing unit 420 requests the termination of the service provided to the subscriber terminal 200 until the end. The timing signal of the billing report timer 410 is maintained until there is, so that even if the first service is terminated, billing information for another service in progress according to the timing signal of the billing report timer 410 is continuously maintained. Is sent to.

On the other hand, if there is a request for termination of the service provided until the end of the provided service, the charging processing unit 420 to stop the generation of the timing signal of the charging report timer 410 so that no further charging report is made. do.

As described above, according to the present invention, since the billing information for the service flow in progress according to one billing reporting cycle is transmitted to the billing server at once, billing for all the service flows in a batch through the transmission of a smaller amount of billing information. Processing can be performed.

Meanwhile, the above-described embodiments of the present invention can be written as a program that can be executed in a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable recording medium.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention belongs may be embodied in a modified form without departing from the essential characteristics of the present invention. You will understand. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the appended claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

As described above, according to the present invention, since the billing information for all service flows in progress at one timing according to one billing reporting period is delivered to the billing server at once, the network load according to the billing message transmission compared to the conventional billing apparatus is increased. At the same time, it is possible to obtain accurate charging information for the subscriber station by minimizing the loss of the charging information.

In addition, according to the present invention, since billing information for all service flows activated in the subscriber terminal is delivered to the billing server at once, the billing information processing procedure is simplified accordingly, so that billing processing can be performed more quickly and easily. have.

In addition, according to the present invention, as compared to the conventional charging device in which all information services having different characteristics such as telephone, data, and video application service are handled as one service class, a charging method differentiated for each service class can be implemented. Accordingly, in the portable Internet system capable of generating multiple services for each user, more reasonable billing can be made between the user and the service provider, and more efficient network operation and profit can be expected from the service provider perspective.

Claims (17)

Claims [1] A billing apparatus in a portable internet system capable of providing at least one service to a subscriber station at a predetermined time. A billing report timer for generating a timing signal according to a billing report period in response to the service providing request from a subscriber station; A billing processor configured to provide billing information on at least one service flow in progress to a billing server according to a timing signal of the billing report timer; And And a memory unit storing a billing table in which billing information is recorded for at least one service flow provided to the subscriber station. According to claim 1, wherein the billing table is configured by the service session unit, the session ID, the IP address of the subscriber station, the billing type, the amount of transmission and reception packets and octets, billing start / end time, timing signal generation of the billing report timer Billing device in the portable Internet system, characterized in that it comprises at least one information of whether or not, billing report period information. The method of claim 1, wherein the charging processing unit, When a service is requested from the subscriber station, it is determined whether there is a charging report timing signal, and when a new timing signal is needed, a charging report timer for the service is generated and the charging report timing signal of the generated charging report timer is used as a reference charging report timing signal. The charging device in the portable Internet system, characterized in that the setting. The method of claim 1, wherein the charging processing unit, In the portable Internet system, a session is generated for each service flow for at least one service requested from the subscriber station, the billing information is collected for each session, and the collected billing information is recorded in the billing table. Of charging device. The method of claim 1, wherein the charging processing unit, When at least one of creation, change, and deletion of a service is requested from a subscriber station, at least one of charging start, change, and termination information corresponding to the request is provided to the charging server. Charging device in the system. The method of claim 1, wherein the charging processing unit, In the case of requesting at least one of creating, changing, and deleting a service from a subscriber station, charging information in the portable Internet system is provided to the charging server for charging information on at least one service flow in progress at the time of the request. Device. Claims [1] A billing apparatus in a portable internet system capable of providing at least one service to a subscriber station at a predetermined time. A billing report timer for generating a timing signal according to a billing report period in response to a first service provision request from a subscriber station; And If the billing information for the first service is provided to the billing server periodically according to the timing signal, and receiving a request for providing a second service from the subscriber station during the first service, billing information for the second service is provided. And a billing processing unit for providing a billing server with billing information for the first service according to the timing signal. The method of claim 7, wherein The charging processing unit, The billing apparatus of the portable Internet system, characterized in that when the second service request from the subscriber terminal, the second service start information and the charging information for the first service is provided to the charging server. The method of claim 7, wherein The charging processing unit, When the termination request from the subscriber station for at least one of the first and second services, providing the termination information of the service corresponding to the termination request and the charging information for the ongoing service to the billing server Billing device in portable internet system. The method of claim 7, wherein The charging processing unit, When receiving the third service provision request from the subscriber station while the first and the second service is provided, the charging information for the third service and the charging information for the first and second services according to the timing signal; The billing apparatus in the portable Internet system, characterized in that provided to the billing server together. The method of claim 10, The charging processing unit, And a third service start information and billing information for the first and second services to the billing server when a third service request is made from the subscriber station. The method of claim 10, The charging processing unit, In the portable Internet system, when the termination request for at least one of the first to third services, the termination information of the service corresponding to the termination request and the charging information for the ongoing service are provided to the charging server. Of charging device. The method of claim 7, wherein The charging processing unit, And when the first service is terminated, charging information for the second service is provided to the charging server according to the timing signal. The method of claim 7, wherein The billing report timer, And a timing signal when terminating a service provided to the subscriber terminal to the end. The method of claim 7, wherein The charging processing unit, When at least one service is requested from the subscriber station, it is determined whether there is a pre-generated timing signal, and when a new timing signal is needed, a charging report timer for the corresponding service flow is generated, and the charging report timing signal of the generated charging report timer is generated. A charging device in a portable internet system, characterized by setting as a reference charging report timing signal. The method of claim 7, wherein And a memory unit storing a charging table in which charging information is recorded for each service flow. 8. A charging device in a portable Internet system according to claim 1 or 7, wherein said charging device is modularized in any one of a base station and a control station conforming to the IEEE 802.16 standard.

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