KR20100053172A - Method for providing prioritization of packet service in mobile communication system - Google Patents

Abstract

PURPOSE: A priority adjustment method among packets in a mobile communication is provided to improve quality of a packet service by assigning radio resource preferentially to service data flow with high priority. CONSTITUTION: A GGSN(Gateway GPRS Support Node)(150) charges for transceived packet data according to charging processing information. If the total sum of requested bandwidth of n-numbered service data flow with the most high priority exceeds maximum bandwidth of a bearer, a PCRF(Policy and Charging Rules Function)](160-1) assigns bandwidth preferentially to the n-numbered service data flow according to packet data priority information. The PCRF transmits determined charging processing information to the GGSN.

Description

Method for providing prioritization between packet services in mobile communication system

The present invention relates to a mobile communication system, and more particularly, to a method for adjusting priority between packet services in a mobile communication system.

With the recent rapid development of communication technology, a mobile communication terminal can provide not only a general voice service but also a multimedia service such as a video. So-called third generation (3G, 3 ^rd Generation) mobile communication system is a mobile communication terminal such as IMS (IP Multimedia Subsystem) mangin PS (Packet Service) network via the interworking with other networks that support both voice service and the packet (Packet) service Provides packet services such as multimedia data. That is, the mobile communication system also provides a service for transmitting packet data to a mobile communication terminal, and also provides a service for transmitting packet data received from the mobile communication terminal to a counterpart terminal or a server (hereinafter, referred to collectively as described above). Packet service).

The third generation mobile communication system may simultaneously provide a plurality of packet services to one mobile communication terminal. Each packet service includes one or more packet flows, and a service data flow, SDF) is a collective set of such packet flows. That is, one packet service is provided through one service data flow. In this case, one or more service data flows may be bound to a bearer, in which case radio resources (eg, bandwidths) required for a plurality of service data flows are allocated to the bearer. Excessive resources occur.

Thus, by prioritizing data service, the flow ^{3GPP (3 rd Generation Partnership Project)} , but provides that should provide the ability to control this, there is not a problem not present a concrete method for it.

Accordingly, an aspect of the present invention is to provide a method for adjusting priority between packet services in a mobile communication system that can determine a priority for a plurality of service data flows accommodated in a bearer and provide a function for controlling the same.

In addition, the present invention is to provide a method for adjusting the priority between packet services in a mobile communication system that can improve the quality satisfaction of the packet service to the user by assigning a radio resource to the service data flow of high priority first. .

According to an aspect of the present invention, in a mobile communication system for providing a packet service to a mobile communication terminal, when the packet service is started, the charging information request signal is transmitted, and transmitted and received to the mobile communication terminal according to the received charging processing information. GGSN charging for packet data to be made; When the charging information request signal is received, the subscriber information request signal is transmitted, and when the subscriber information response signal including the packet data priority information for the mobile communication terminal is received, the priority is highest according to the packet data priority information. It is determined whether the total required bandwidth of the n-rank service data flow exceeds the bearer maximum bandwidth, and if exceeded, the billing processing information determined by allocating a bandwidth to the n-rank service data flow by a preset method is transmitted to the GGSN. And a subscriber information storage device for transmitting the subscriber information response signal to the PCRF according to the PCRF and the received subscriber information request signal, wherein n is a natural number.

In addition, according to another embodiment of the present invention, in the method for adjusting the priority between packet services in a mobile communication system including a GGSN, PCRF and subscriber information storage device, and provides a packet service to a mobile communication terminal, the GGSN is Transmitting a billing information request signal when the packet service is started; Transmitting, by the PCRF, a subscriber information request signal when the charging information request signal is received; Transmitting, by the subscriber information storage device, a subscriber information response signal including packet data priority information for the mobile communication terminal to the PCRF according to the received subscriber information request signal; When the PCRF receives the subscriber information response signal, the PCRF determines whether the total required bandwidth of the highest priority n-order service data flow exceeds the bearer maximum bandwidth according to the packet data priority information. Determining charge processing information by allocating a bandwidth to the n-th order service data flow according to the first priority; The PCRF transmitting the charging process information to the GGSN; And charging, by the GGSN, packet data transmitted and received to and from the mobile communication terminal according to the received charging processing information, wherein n is a natural number. .

According to the present invention, it is possible to provide a packet service providing method in a mobile communication system capable of determining a priority for each service data flow and providing a function for controlling the priority.

In addition, according to the present invention, radio resources may be preferentially allocated to high-priority service data flows, thereby improving quality satisfaction of packet services for users.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a mobile communication network.

Referring to FIG. 1, the mobile communication network 100 is a wideband code division multiple access (WCDMA) network, which is referred to as a mobile communication terminal 110, a Node-B 120, and a wireless network controller (hereinafter referred to as RNC). 130), a Packet Switching Support Node (SGSN) 140, a Packet Switching Gateway Node (GGSN, Gateway GPRS Support Node) (GGSN) 150, and a PCC architecture 160, and a GGSN 150 ) Is connected to an IP network 170 such as an IMS (IP Multimedia Subsystem) network. In addition, the PCC structure 160 includes a policy and charging rules function (PCRF) 160-1, a subscriber information storage device (hereinafter referred to as a SPR (Subscription Profile Repository)) 160-2, and its application. Device (hereinafter referred to as AF (Application Function) 160-3). Herein, although the mobile communication network 100 assumes and describes a WCDMA mobile communication network, it is obvious that the mobile communication network 100 may be included in the mobile communication network 100 according to the present invention. Hereinafter, the operation of each component of the mobile communication network 100 will be described.

The mobile communication terminal 110, which is a user terminal, is connected to the mobile communication network 100 through a base station called a Node-B 120, and a plurality of Node-Bs 120 are managed by the RNC 130. The RNC 130 and the SGSN 140 are connected through an Iu interface, and control messages such as session generation / modify / delete are used by the RANAP protocol, and are transmitted and received through the generated session. GTP-U protocol is used for user data.

SGSN 140 is connected to the Home Location Register (HLR) (not shown) through the MAP protocol, thereby retrieving user information including the location information of the user. In addition, the control message may be transmitted and received using the MAP protocol to retrieve the user's location information between the GGSN 160 and the HLR (not shown).

The SGSN 140 and the GGSN 160 are connected through the Gn interface, and the Gn interface manages sessions such as session creation / modification / deletion by the GTP-C protocol, and user data is transmitted and received by using the GTP-U protocol. do.

The part of the GGSN connected to the PS network such as the IP network 170 (for example, the Internet) is called a Gi interface, and the Gi interface processes an IP network by processing a GTP-U message received through the Gn interface. In step 170, the IP data received from the IP network 170 through the Gi interface is processed into a GTP-U message suitable for each session information and transmitted to the Gn interface.

In addition, the PCC structure 160, as described above, the PCRF (Policy and Charging Rules Function) (160-1), SPR (Subscription Profile Repository) (160-2) and AF (Application Function) (160-3) The PCRF 160-1 is connected to the GGSN 150 through the Gx interface, and is referred to as a subscription profile (hereinafter referred to as subscriber information) of the mobile communication terminal 110 based on the SPR 160-2. Billing processing information (e.g., information about a fee set in advance for the service packet provided) and the billing processing information (billing). Processing information, Policy and Charging Control Rule) is generated and transmitted to the GGSN 150. In this case, the subscriber information may include basic information about the mobile communication terminal 110 and information about an hourly charge and / or a discount on the charging of the mobile communication terminal 110.

Accordingly, the PCRF 160-1 may determine charging processing information for the packet service using the subscriber information and / or packet service information. This is because the PCRF 160-1 may determine the billing processing information (PCC-Rule) by reflecting information on the billing per unit time and / or per unit packet that is set in advance by the user's selection or the like. Hereinafter, the contents included in the PCC-Rule will be described with reference to FIG. 2.

2 is a table of the contents included in the PCC-Rule.

2 describes the contents included in the PCC-Rule determined by the PCRF 160-1. Referring to FIG. 2, the PCC-Rule includes PCC-Rule identifier information (Rule identifier), service data flow detection information (SDF), SDF rate information (Charging key), and charging method information (Charging). method), SDF uplink maximum bandwidth information (UL-maximum Bandwidth), SDF downlink maximum bandwidth information (DL-maximum Bandwidth), SDF uplink required bandwidth information (UL-guaranteed Bandwidth), SDF downlink required bandwidth information (DL information such as -guaranteed bandwidth). It is obvious that addition of new information or modification and / or deletion of the illustrated information is possible in addition to the contents shown in FIG. 2.

That is, the PCC-Rule may include the contents shown in FIG. 2, so that the GGSN 150 charges for the data packet provided to the mobile communication terminal 110 (or received from the mobile communication terminal 110). In this case, charging for the data packet may be performed by a Policy and Charging Enforcement Function (PCEF) (not shown) included in the GGSN 150. Here, the contents and / or functions of the respective information included in the PCC-Rule shown in FIG. 2 are obvious to those skilled in the art, and a detailed description thereof may be omitted herein.

Referring back to FIG. 1, the SPR 160-2 is a device for storing subscriber information for the mobile communication terminal 110 and provides subscriber information for the mobile communication terminal 110 to the PCRF 160-1.

SPR (160-2) is a device that stores the subscriber information for the mobile communication terminal 110 provides the subscriber information for the mobile communication terminal 110 to the PCRF (160-1). Here, as described above, the subscriber information may include information on the hourly charging and / or information on the charging discount as the basic information on the mobile communication terminal 110.

The AF 160-3 may refer to a P-CSCF (Proxy Call Session Control Function) device of IMS, and provides information about a data packet provided to the mobile communication terminal 110 to the PCRF 160-1. do.

In the above, the general operations of each component included in the mobile communication system 100 have been described. Hereinafter, a method of adjusting priority between packet services in the mobile communication system 100 according to an embodiment of the present invention will be described. More specifically, the method of assigning the bitrate for each SDF when the PCRF 160-1 contends in the bearer will be described in more detail.

First, the GGSN 150 is provided to the mobile communication terminal 110 when the packet service is started (for example, when a signal for requesting a session establishment for the packet service is received from the mobile communication terminal 110) or the mobile communication. The charging information request signal (Credit Control Request, CCR) is transmitted to the PCRF 160-1 for charging the data packet received from the terminal 110. Here, the charging information request signal may include information about a maximum bandwidth allocated to a bearer (PDP context) to which the packet data is transmitted (or received) (hereinafter, referred to as bearer maximum bandwidth information). That is, a session connected to the mobile communication terminal 110 may include a plurality of bearers. Since the bandwidth allocated to the session has a certain limitation, the user or the operator may not allow an excessive allocation of bandwidth to one bearer. The maximum bandwidth for this bearer is set. The bearer maximum bandwidth information may be included in the QoS-Information AVP included in the charging information request signal (CCR) and transmitted to the PCRF 160-1.

The PCRF 160-1 receiving the charging information request signal CCR requests the subscriber information for the mobile communication terminal to the SPR 160-2 (i.e., transmits the subscriber information request signal). . Accordingly, the SPR 160-2 reads subscriber information corresponding to the subscriber information request signal and transmits the subscriber information to the PCRF 160-1 (that is, transmits a subscriber information response signal). Here, the subscriber information includes information on packet services available to the subscriber (hereinafter referred to as packet data information), and the packet data information includes the type of the packet data (hereinafter referred to as packet data type information) (QCI). , QoS Class Identifier) and priority set among packet data (hereinafter, referred to as packet data priority information).

Here, the packet data type information is information classified according to the type of packet data transmitted and received. For example, audio packet data may be set to 1, video packet data to 2, text packet data to 3, and the like. The setting may be made by the user and / or operator. That is, since the audio packet data is the most basic data in communication, the packet data type number for the audio packet data may be set to 1 in advance. In addition, the packet data priority information corresponds to a priority set by the subscriber and / or operator regarding the packet data that the mobile communication terminal 110 should transmit and receive first of the available packet data services. Information.

The PCRF 160-1 receiving the subscriber information determines the PCC-Rule using the subscriber information and / or the charging information request signal. That is, the PCRF 160-1 allocates bandwidth to the first-order SDF having the highest packet data priority information (that is, the SDF having the packet data priority information of 1) (that is, the bandwidth information required for the SDF is allocated. Decide). At this time, among the priority SDFs, the requested bandwidth is first allocated to the packet data having the packet data type information of 1 (audio packet data in the above-described example). Here, the required bandwidth may be a bandwidth preset by a user and / or an operator as a bandwidth required for transmission and reception of the SDF. In addition, although it has been described herein that the request bandwidth is allocated to the packet data having the packet data type information of 1 first, the request bandwidth is first set to be allocated first if the packet data type information is any number other than 1. It may be. Therefore, it is obvious that the contents of the packet data type information do not limit the scope of the present invention.

Thereafter, the PCRF 160-1 determines whether the sum of the required bandwidths of the remaining first priority SDF to which the required bandwidth is not allocated exceeds the remaining bandwidth of the bearer (hereinafter, referred to as a first bearer remaining bandwidth). For example, it is assumed that the maximum bandwidth of a bearer corresponds to 100, and the required bandwidth of an SDF whose packet data type information is 1 among first priority SDFs corresponds to 20. In this case, since the remaining bandwidth of the bearer corresponds to 80 (80 = 100-20), the PCRF 160-1 may determine whether the total of the required bandwidths of the remaining first priority SDFs exceeds 80. As a result of the determination, if the sum of the required bandwidths of the remaining first priority SDFs does not exceed the remaining bandwidth of the first bearer, the PCRF 160-1 allocates the required bandwidths to all of the first priority SDFs, respectively.

On the other hand, if the sum of the required bandwidths of the remaining first priority SDFs exceeds the remaining bandwidth of the bearer, the PCRF 160-1 allocates bandwidth to the remaining first priority SDFs according to a preset scheme. For example, the PCRF 160-1 may allocate bandwidth to the remaining first priority SDFs by the following equation.

In this case, it is assumed that the first bearer remaining bandwidth is 100, the required bandwidth of the first remaining first priority SDF is 100, and the required bandwidth of the second remaining first priority SDF is 50. Accordingly, the bandwidth allocated to the first remaining first priority SDF is 100/150 * 100 = 66.667. In addition, the bandwidth allocated to the second remaining first priority SDF is 50/150 * 100 = 33.333. It is apparent that the PCRF 160-1 can allocate bandwidth to all priority SDFs by the above-described method.

Thereafter, the PCRF 160-1 determines whether there is an SDF to which no bandwidth is allocated after allocating the bandwidth to all first priority SDFs. As a result, if there is no SDF to which bandwidth is not allocated, the PCRF 160-1 completes the PCC-Rule determination and transmits the determined PCC-Rule to the GGSN 150. Of course, the PCRF 160-1 may complete the PCC-Rule determination only when all of the other information included in the PCC-Rule is completed, and transmit the determined PCC-Rule to the GGSN 150.

On the other hand, if there is an SDF to which no bandwidth is allocated, it is determined whether the PCRF 160-1 bearer remaining bandwidth (hereinafter referred to as a second bearer remaining bandwidth) exists. That is, if bandwidth is allocated to the remaining first priority SDF according to the above equation, there will be no remaining bearer bandwidth, but if the total remaining first priority SDF bandwidth is less than the first bearer remaining bandwidth, the required bandwidth of the first priority SDF is determined. This is because there will be a second bearer remaining bandwidth after all allocation.

As a result, if there is an SDF to which no bandwidth is allocated but the second bearer remaining bandwidth does not exist, the PCRF 160-1 does not allocate a bandwidth to the SDF to which the bandwidth is not allocated (Flow-Status = DISABLED). On the contrary, if the SDF with no bandwidth is allocated and the second bearer remaining bandwidth exists, the PCRF 160-1 allocates the bandwidth to the second-order SDF. The method of allocating bandwidth to the secondary SDF is the same as the method of allocating the bandwidth to the primary SDF. Therefore, detailed description of the operation of allocating the bandwidth for the second-order subordinate SDF is omitted.

The PCRF 160-1 transmits the determined PCC-Rule to the GGSN 150 when the bandwidth allocation for the SDFs is completed. In addition, the GGSN 150 that receives the PCC-Rule stores the PCC-Rule and charges the packet data transmitted and received.

By the above-described operation, the mobile communication system 100 according to the present invention may allocate bandwidth to SDF having a higher priority among a plurality of SDFs, thereby improving the quality satisfaction of packet service for the user. Is self explanatory. Here, the meaning that the bandwidth is preferentially allocated to the SDF having a higher priority may mean that the bandwidth is allocated to the SDF having a higher priority than the SDF having a lower priority. For example, suppose that there are two n-rank SDFs (where n is a natural number) and two n + 1 rank SDFs to which bandwidth should be allocated. In this case, the bandwidth may be allocated to the n-rank SDF first (ie, preferentially), and the bandwidth may be allocated to the n + 1-rank SDF only by the remaining bandwidth allocated to the n-rank SDF.

3 is a flowchart illustrating a method of determining a PCC-Rule in a mobile communication network according to an embodiment of the present invention, and FIG. 4 is a diagram of a method of determining a PCC-Rule in a PCRF according to an embodiment of the present invention. Flowchart.

Hereinafter, a PCC-Rule determination method according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4. The method performed here is performed by each component included in the mobile communication system 100 described with reference to FIG. 1. In addition, only the method of determining the bandwidth allocated to the SDF among the various information included in the PCC-Rule will be described here, and it is assumed that other information has already been determined.

In step 310, the GGSN 150 is provided to the mobile communication terminal 110 when the packet service is started (for example, when the mobile communication terminal 110 requests a session establishment for the packet service) or the mobile communication terminal ( The charging information request signal (Credit Control Request, CCR) is transmitted to the PCRF 160-1 for charging the data packet received from the 110. Here, the charging information request signal may include information about a maximum bandwidth allocated to a bearer (PDP context) to which the packet data is transmitted (or received) (hereinafter, referred to as bearer maximum bandwidth information).

In step 320, the PCRF 160-1 having received the charging information request signal CCR requests the subscriber information for the mobile communication terminal from the SPR 160-2 (Profile Request). In operation 330, the SPR 160-2 reads subscriber information corresponding to the received subscriber information request signal and transmits the subscriber information to the PCRF 160-1 (Profile Response). Here, the subscriber information includes packet data information, and the packet data information includes packet data type information and packet data priority information.

In operation 340, the PCRF 160-1 having received the subscriber information determines the PCC-Rule using the subscriber information and / or the charging information request signal. The method of determining the PCC-Rule by the PCRF 160-1 will be described with reference to FIG. 4.

Referring to FIG. 4, the PCRF 160-1 having received subscriber information detects an n-priority SDF having the highest priority among one or more SDFs with reference to packet data priority information, and packet data type information among n-priority SDFs. The requested bandwidth is first allocated to the packet data having (QCI) of 1 (step 410), where n is a natural number. Here, it is explained that the request bandwidth is first assigned to the packet data having the packet data type information of 1, but it may be set in advance that the request bandwidth is allocated first if the packet data type information is any number other than 1. Is as described above.

In step 420, the PCRF 160-1 determines whether the sum of the required bandwidths of the remaining n-rank SDFs to which the required bandwidth is not allocated exceeds the first bearer remaining bandwidth.

As a result of the determination in step 420, if the sum of the required bandwidths of the remaining n rank SDFs does not exceed the remaining bandwidth of the first bearer, the PCRF 160-1 allocates each of the required bandwidths for all of the n rank SDFs (step 430). .

On the other hand, if the total of the required bandwidth of the remaining n rank SDFs exceeds the remaining bandwidth of the bearer as a result of the determination in step 420, the PCRF 160-1 allocates bandwidth to the remaining n rank SDFs according to a preset method (step 440). For example, the PCRF 160-1 may allocate bandwidth to the remaining first priority SDFs by the following equation.

In step 450, the PCRF 160-1 allocates bandwidth to all priority SDFs and then determines whether there is an SDF with no bandwidth allocated thereto. As a result of the determination in step 450, if there is no SDF to which the bandwidth is not allocated, the PCRF 160-1 completes the PCC-Rule determination. Of course, the PCRF 160-1 may complete the PCC-Rule determination only when all of the determinations for other information included in the PCC-Rule are completed.

On the other hand, if there is an SDF to which bandwidth is allocated as a result of the determination in step 450, the PCRF 160-1 determines whether there is a second bearer remaining bandwidth (step 460). That is, if bandwidth is allocated to the remaining first priority SDF according to the above equation, there will be no remaining bearer bandwidth, but if the total remaining first priority SDF bandwidth is less than the first bearer remaining bandwidth, the required bandwidth of the first priority SDF is determined. This is because there will be a second bearer remaining bandwidth after all allocation.

As a result of the determination in step 460, if there is an SDF to which no bandwidth is allocated but the second bearer remaining bandwidth does not exist, the PCRF 160-1 does not allocate the bandwidth to the SDF to which the bandwidth is not allocated (Flow-Status = DISABLED). ) (Step 470).

On the contrary, if the determination result in step 460 indicates that there is an SDF to which no bandwidth is allocated and there is a second bearer remaining bandwidth, the PCRF 160-1 allocates the bandwidth to the second-order SDF. That is, the above steps 410 to 460 are repeated for the n + 1 rank SDF.

Referring to FIG. 3 again, the PCRF 160-1 determining the PCC-Rule by the above-described method transmits the determined PCC-Rule to the GGSN 150 (step 350).

In step 360, the GGSN 150 that receives the PCC-Rule stores the PCC-Rule and charges for the packet data transmitted and received.

By the above-described method, the mobile communication system 100 according to the present invention may preferentially allocate bandwidth to SDF having a higher priority among a plurality of SDFs, thereby improving quality satisfaction of packet service for a user. Is self-explanatory.

In addition, the method for providing a packet service in a mobile communication system according to the present invention described above may be embodied as computer readable codes on a computer readable recording medium. Computer-readable recording media include all kinds of recording media having data stored thereon that can be decrypted by a computer system. For example, there may be a read only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, and the like. In addition, the computer-readable recording medium may be distributed and executed in a computer system connected to a computer network, and may be stored and executed as a code readable in a distributed manner.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a schematic configuration diagram of a mobile communication network.

2 is a table of the contents included in the PCC-Rule.

3 is a flowchart illustrating a PCC-Rule determination method in a mobile communication network according to an embodiment of the present invention.

Figure 4 is a flow chart for a method for determining PCC-Rule in PCRF according to an embodiment of the present invention.

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

110: mobile communication terminal

120: Node B

130: RNC (Radio Network Controller)

140: Serving GPRS Support Node (SGSN)

150: Gateway GPRS Support Node (GGSN)

160: PCC structure

160-1: PCRF (Policy and Charging Rules Function)

160-2: Subscription Profile Repository (SPR)

160-3: AF (Application Function)

170: IP network

Claims (14)

In the mobile communication system for providing a packet service to the mobile communication terminal, A packet gateway support node for transmitting a billing information request signal when the packet service is started, and billing for packet data transmitted and received to the mobile communication terminal according to the received billing processing information; When the charging information request signal is received, the subscriber information request signal is transmitted, and when the subscriber information response signal including the packet data priority information for the mobile communication terminal is received, the priority is highest according to the packet data priority information. It is determined whether the total required bandwidth of the n-rank service data flow exceeds the maximum bearer bandwidth, and if it exceeds, the packet gateway support the charging processing information determined by allocating the bandwidth to the n-rank service data flow by a preset method. A charging policy processing apparatus for transmitting to the node; And And a subscriber information storage device for transmitting the subscriber information response signal to the charging policy processing device according to the received subscriber information request signal. And n is a natural number. The method of claim 1, The subscriber information response signal further includes packet data type information on the mobile communication terminal. When the subscriber information response signal is received, the charging policy processing apparatus firstly allocates a required bandwidth to a service data flow having the packet data type information of a predetermined value among the n-rank service data flows, and then assigns the remaining bandwidth to the remaining n-rank service data flows. And allocating a bandwidth to determine the charging processing information. The method of claim 2, And the charging policy processing apparatus allocates bandwidth to the remaining n-rank service data flow according to the following equation.

However, the bearer remaining bandwidth corresponds to a value excluding the bandwidth allocated to the service data flow in which the packet data type information is a preset value in the bearer maximum bandwidth. The method of claim 1, The charging policy processing apparatus determines the charging processing information by allocating the required bandwidth of the n-th service data flow if the total required bandwidths of the n-th service data flow do not exceed a bearer maximum bandwidth. system. The method of claim 4, wherein The charging policy processing apparatus allocates all the bandwidths for the n-rank service data flow and then, if there is a bearer remaining bandwidth and n + 1-rank service data flow exists, And allocating a bandwidth to determine the charging processing information. The method of claim 5, The subscriber information response signal further includes packet data type information for the mobile communication terminal. If the subscriber information response signal is received, the charging policy processing apparatus first allocates the required bandwidth to the service data flow whose packet data type information is a preset value among the n + 1 priority service data flows, and then the remaining n + 1 priority service. And allocating a bandwidth to a data flow to determine the charging processing information. The method of claim 6, And the charging policy processing apparatus allocates bandwidth to the remaining n + 1 priority service data flow according to the following equation.

However, the remaining bearer bandwidth corresponds to a value excluding the bandwidth allocated to the n-order service data flow in the bearer maximum bandwidth and the bandwidth allocated to the n + 1 priority service data flow in which the packet data type information is a preset value. A packet service providing method in a mobile communication system including a packet gateway support node, a charging policy processing device, and a subscriber information storage device, and providing a packet service to a mobile communication terminal, Transmitting, by the packet gateway support node, a charging information request signal when the packet service is started; Transmitting, by the charging policy processing apparatus, a subscriber information request signal when the charging information request signal is received; Transmitting, by the subscriber information storage device, a subscriber information response signal including packet data priority information for the mobile communication terminal to the charging policy processing device according to the received subscriber information request signal; When the charging policy processing apparatus receives the subscriber information response signal, it is determined whether the total bandwidth required for the highest priority n-order service data flow exceeds the bearer maximum bandwidth according to the packet data priority information. Determining charging processing information by allocating a bandwidth to the n-th order service data flow by a preset method; Transmitting, by the charging policy processing apparatus, the charging processing information to the packet gateway support node; And charging, by the packet gateway support node, packet data transmitted and received to and from the mobile communication terminal according to the received billing processing information. And n is a natural number. The method of claim 8, The subscriber information response signal further includes packet data type information for the mobile communication terminal. The determining of the billing processing information by the billing policy processing apparatus, Allocating, by the charging policy processing apparatus, the requested bandwidth to the service data flow having the packet data type information as a preset value among the n-rank service data flows when the subscriber information response signal is received; And And determining, by the charging policy processing apparatus, the charge processing information by allocating a bandwidth to the remaining n-rank service data flow. 10. The method of claim 9, The charging policy processing apparatus may determine the charging processing information by allocating bandwidth to the remaining n-rank service data flow. The charging policy processing apparatus further comprises the step of allocating a bandwidth to the remaining n-rank service data flow according to the following equation.

However, the bearer remaining bandwidth corresponds to a value excluding the bandwidth allocated to the service data flow in which the packet data type information is a preset value in the bearer maximum bandwidth. The method of claim 8, The determining of the billing processing information by the billing policy processing apparatus, And determining, by the charging policy processing apparatus, the charge processing information by allocating a request bandwidth of the n-rank service data flow when the total required bandwidth of the n-rank service data flow does not exceed a bearer maximum bandwidth. A priority adjusting method between packet services in a mobile communication system. The method of claim 11, The determining of the billing processing information by the billing policy processing apparatus, After the charging policy processing apparatus allocates all the bandwidths for the n-rank service data flow, if there is a bearer remaining bandwidth and an n + 1-rank service data flow exists, And allocating bandwidth to determine the charging processing information. The method of claim 12, The subscriber information response signal further includes packet data type information for the mobile communication terminal. The charging policy processing apparatus may determine the charging processing information by allocating a bandwidth by a method preset in the n + 1 priority service data flow. Allocating, by the charging policy processing apparatus, the requested bandwidth to the service data flow having the packet data type information as a preset value among the n + 1 priority service data flows when the subscriber information response signal is received; And And determining, by the charging policy processing apparatus, the charging processing information by allocating a bandwidth to the remaining n + 1 priority service data flows. The method of claim 13, The charging policy processing apparatus may determine the charging processing information by allocating a bandwidth to the remaining n + 1 priority service data flow. And assigning a bandwidth to the remaining n + 1 priority service data flow by the charging policy processing apparatus according to the following equation.

However, the bearer remaining bandwidth corresponds to a value excluding the bandwidth allocated to the service data flow in which the packet data type information is a preset value in the bearer maximum bandwidth.

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