KR20090014943A - Apparatus and method for supporting mixed quality of service setup type in broadband wireless communication system - Google Patents

Abstract

An apparatus and a method for supporting mixed quality of service setup type in a broadband wireless communication system are provided to classify QoS setup types applied to terminal. A terminal checks whether to perform an initial connection procedure(601). If the initial connection procedure has to be performed, the terminal checks whether available QoS establishment type information is received while the initial connection procedure is performed(603). The available QoS establishment type information is received after completing an authentication process. And the available QoS establishment type information is one or combination of at least two of QoS establishment types. When the available QoS establishment type information is received, the terminal processes service flows according to the available QoS establishment type and performs communication after completing the initial connection procedure(605).

Description

Apparatus and method for supporting complex quality of service setting type in broadband wireless communication system {APPARATUS AND METHOD FOR SUPPORTING MIXED QUALITY OF SERVICE SETUP TYPE IN BROADBAND WIRELESS COMMUNICATION SYSTEM}

The present invention relates to a broadband wireless communication system, and more particularly, to an apparatus and a method for guaranteeing end to end quality of service (QoS) in a broadband wireless communication system.

In the past, communication systems have been developed considering only the system's capabilities such as the system's wireless capacity and service speed. However, with the increase of service types, traffic congestion, and diversification of the service demand level of users, current communication systems are operating in consideration of the quality of service (QoS), which means user satisfaction as well as the capability of the system itself. . Furthermore, in the wireless communication system, the amount of available resources changes due to the time-varying channel environment and the movement of the terminal, and thus, a policy considering various situations is required to guarantee the QoS. In addition, as users of broadband wireless communication systems require a variety of high-speed services, establishing a QoS policy for effectively controlling the change of radio resources and the traffic generated is a major issue.

In order to provide a satisfactory service to the user, end to end QoS must be guaranteed. The end-to-end QoS is an application layer QoS between the service provider and the terminal or between the terminal and the terminal, and means the QoS experienced by the user. In order to guarantee end-to-end QoS, an interworking procedure for guaranteeing overall QoS with an IP layer (Internet Protocol Layer) and a MAC layer (Media Access Control Layer) existing under the application layer is required. At this time, different QoS interworking procedures are created depending on how the QoS policy is determined. That is, various QoS interworking procedures may exist for each operator or operator.

At this time, an operator or an operator may establish various QoS interworking procedures based on a plurality of QoS policies, and support all of a plurality of QoS interworking procedures in one wireless access network. Furthermore, it may be desired to simultaneously support multiple QoS interworking procedures for one UE. In this case, the system must distinguish the QoS interworking procedure applied to each terminal. This is because a service flow (SF) processing procedure allowed to the UE may vary according to QoS interworking procedures. Accordingly, in order to support a plurality of QoS interworking procedures in a wireless communication system, an alternative for distinguishing QoS interworking procedures applied to a terminal is needed.

Accordingly, an object of the present invention is to provide an apparatus and method for supporting a plurality of Quality of Service (QoS) setup types in a broadband wireless communication system.

Another object of the present invention is to provide an apparatus and method for classifying a QoS setting type applied to a terminal in a broadband wireless communication system.

Another object of the present invention is to provide an apparatus and method for classifying QoS setting types for each service flow (SF) in a broadband wireless communication system.

According to a first aspect of the present invention for achieving the above object, a broadband wireless communication system supports a first quality of service (QoS) setup type for a first terminal, and a second QoS setting type for a second terminal. An access service network (ASN) supporting a first service, a first terminal which processes a service flow (SF) according to the first QoS configuration type, and performs communication, and a service according to the second QoS configuration type. And a second terminal for processing the flow and performing communication.

According to a second aspect of the present invention for achieving the above object, a terminal device in a broadband wireless communication system, the receiving unit for receiving the available QoS setting type information during the initial connection, and processes the service flow according to the available QoS setting type And a controller for controlling to perform communication.

According to a third aspect of the present invention for achieving the above object, in a broadband wireless communication system, a base station apparatus includes a transmitter for transmitting available QoS setting type information to the terminal upon initial access of the terminal and the available QoS setting type. And a control unit for processing a service flow and controlling to perform communication.

According to a fourth aspect of the present invention for achieving the above object, in a broadband wireless communication system, a control station apparatus includes a management unit for checking available QoS setting type information of a terminal to be initially connected, and the available QoS setting type information as a base station. It characterized in that it comprises a communication unit for providing.

According to a fifth aspect of the present invention for achieving the above object, in a broadband wireless communication system, the PDF (Policy Decision function) device, if the terminal requests the use of the service through an application layer message, the available QoS setting type of the terminal And a communication unit for transmitting a signal for triggering one of a service flow addition procedure or a service flow change procedure according to the available QoS configuration type.

According to a sixth aspect of the present invention for achieving the above object, a method of operating a terminal in a broadband wireless communication system includes the steps of receiving available QoS setting type information during initial connection, and performing a service flow according to the available QoS setting type. It is characterized in that it comprises a process of performing communication.

According to a seventh aspect of the present invention for achieving the above object, an operation method of a base station in a broadband wireless communication system includes the steps of transmitting available QoS setting type information to the terminal during initial access of the terminal, and the available QoS setting type. The service flow according to the characterized in that it comprises a process of performing communication.

According to an eighth aspect of the present invention for achieving the above object, a method for operating a control station in a broadband wireless communication system includes the steps of: checking available QoS setting type information of a terminal to be initially connected, and providing the available QoS setting type information. It characterized in that it comprises a process for providing to the base station.

According to a ninth aspect of the present invention for achieving the above object, a method of operating a PDF in a broadband wireless communication system includes: when a terminal requests service use through an application layer message, checking an available QoS setting type of the terminal; And transmitting a signal for triggering one of a service flow addition procedure or a service flow change procedure according to the available QoS configuration type.

By exchanging and managing available Quality of Service (QoS) setup type information in a broadband wireless communication system as in the present invention, a plurality of QoS setup types can be supported.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, a technology for supporting a plurality of Quality of Service (QoS) interworking procedures in a broadband wireless communication system will be described. The present invention is described by taking an orthogonal frequency division multiplexing (hereinafter referred to as "OFDM") wireless communication system as an example, and may be equally applicable to other wireless communication systems.

First, the present invention assumes several QoS interworking procedures for the following description. The QoS interworking procedure is divided by a method of adding a service flow (SF) and a method of changing a QoS profile of the service flow, and are classified into a QoS setup type in the following description. Termination and characteristics of QoS configuration types assumed in the present invention are shown in Table 1 below.

 QoS configuration type  Characteristic   Static   Added service flows with a fixed number and a defined QoS profile when the terminal is initially connected. Service flow change procedure allows transition between active mode, admitted mode and provisioned mode. QoS profile cannot be changed. Service flow cannot be added after initial connection.   Semi-dynamic   Added service flows with a fixed number and a defined QoS profile when the terminal is initially connected. The service flow change procedure enables the transition between active mode, permit mode, and ready mode. The QoS profile can be changed through the service flow change procedure. Service flow cannot be added after initial connection. Dynamic  After completion of initial connection, add service flow if necessary. Service flow can be changed and deleted. But mode can be managed without ready mode

That is, the wireless communication system according to the present invention supports all the multiple QoS setting types as shown in Table 1 above.

As shown in Table 1, in the case of the static type, the QoS profile cannot be changed. Therefore, the QoS profile of the service flow generated according to the static type is always the same regardless of the mode. In other words, the QoS profile of the service flow generated according to the static type may be changed in each mode by being managed separately for each of the active mode, the permit mode, and the ready mode, but once determined, they remain the same in all modes.

And, in the case of the semi-dynamic type, the QoS profile can be changed by the service flow change procedure. Therefore, the QoS profile of the service flow generated according to the semi-dynamic type may vary depending on the mode. At this time, the dependency relationship of the QoS parameter set is ready mode, permit mode, and active mode. That is, the ready mode is the highest mode and the active mode is the lowest mode. Changing the QoS parameter value of the lower mode is possible within the parameter value range of the upper mode.

And, in the case of the dynamic type, the service flow can be changed and deleted. The QoS profile of the service flow generated according to the dynamic type may vary depending on the mode. At this time, the dependency relationship of the QoS parameter set is ready mode, permit mode, and active mode. That is, the ready mode is the highest mode and the active mode is the lowest mode. Changing the QoS parameter value of the lower mode is possible within the parameter value range of the upper mode.

In this case, the wireless communication system according to the present invention may allow only one QoS setting type for one terminal or allow different QoS setting types for each service flow for one terminal.

1 shows a schematic configuration of a broadband wireless communication system according to the present invention.

As shown in FIG. 1, the broadband wireless communication system according to the present invention includes a terminal 110, a base station 120, a control station 130, a policy decision function (PDF) 140, an authentication server 150, It is configured to include a carrier management server (160).

The terminal 110 is an end device for accessing a user network. In addition, the base station 120 is a device for managing radio resources for accessing the network of the terminal, and can be represented by a radio access station (RAS) or a base station (BS). The control station 130 is a device that performs a gateway function of a subnet including a plurality of base stations, and may be represented by an access control router (ACR) or an access service network_gateway (ASN_GW). The control station 130 manages service flow, connection, and mobility of the terminal 110. Here, the service flow is generated by dividing uplink and downlink.

The PDF 140 determines a QoS parameter of a service flow by reflecting a system operator's policy on QoS. In addition, the PDF 140 may trigger a service flow addition procedure, a service flow change procedure, and a service flow deletion procedure. However, the PDF 140 may mean a functional element and may be configured as an independent server or included in another network entity as one function. For example, an IP Multimedia Subsystem (IMS) server using a Session Initiate Protocol (SIP) may include the PDF 140. However, the IMS server is for SIP-based IMS-based dynamic QoS, and may not exist when applying Web-based dynamic QoS based on HTTP (Hyper Text Tranport Porotocol). In addition, one server may be configured only with P-CSCF (Proxy-Call State Control Function) and PDF which are part of the IMS server. Here, the P-CSCF is a functional block of an IMS that receives a SIP message transmitted by a user, and may be referred to as an interface block.

In addition, the PDF 140 may be configured in multiple stages so that some functions may be included in other entities. For example, the functionality may be included in an Authentication Authorization Accounting (AAA) server, WSM, or ASN_GW. As another example, the policy and billing function and interface specifications of the 3GPP or 3GPP2 system, such as the existing policy charge rule function (PCRF), are maintained, and new intermediates between the PCRF and the wireless network (WiMAX, HSDPA or WLAN) By placing a PDF, the output of the PCRF can be translated into the final output variable for each wireless network. In this case, both the PCRF and the intermediate PDF belong to the PDF 140.

Some of the various parameters determined by the PDF 140 are commonly used in the application layer, the IP layer, the MAC layer, and the physical layer. However, parameters such as 'grant interval' are used only in the MAC layer. Examples of parameters used only in the MAC and physical layers include 'request / transmission policy', ie 'fragmentation', 'packing', 'compression method and condition', 'ARQ application', 'HARQ application' There is this.

The authentication server 150 manages authentication information and charging information of terminals, and may be expressed as AAA. User information is managed in the Subscription Profile Repository (SPR), which may belong to AAA as a functional element or exist as an independent server. The authentication information refers to information on service qualification of each of the terminals with respect to terminals allowed to provide a service from a corresponding provider. The authentication information may be expressed as a user rating. For example, the user rating may be classified into premium, gold, silver, bronze, and the like. The charging information is information about a fee that a user must bear for using a service of the terminal.

The operator management server 160 is a device for network management of the operator, and may be expressed as a Wibro System Manager (WSM) or an Element Management System (EMS). The operator management server 160 delivers information on a network configuration to devices in an access service network (ASN) and manages devices in the ASN. Here, the ASN is a set of one or more subnets managed by the same operator, and includes the base station 110 and the control station 120, which is also used in the following description.

In the schematic configuration of the system shown in FIG. 1, the case where the PDF 140 is configured in multiple steps will be described below. In this case, a PCRF for generating QoS parameters of an Internet Protocol (IP) layer using QoS parameters of an application layer, which is an application layer service request, and at least one IP layer other than QoS parameters of the IP layer generated by the PCRF. Generating a QoS parameter set of a wireless access network using a first PDF that generates a QoS parameter of the first and a QoS parameters of the IP layer generated by the PCRF and QoS parameters of at least one IP layer generated by the first PDF. The second PDF replaces the function of the PDF 140. In this case, the second PDF may be referred to as a PCEF (Policy Charging Enforcement Function).

In this case, a method for delivering QoS quality of service parameters of a wireless access network generated using QoS parameters of an application layer to a network entity in a wireless access network is as follows. First, a method of setting QoS parameters of a lower layer in advance and delivering them when a service flow is generated during initial access, and second, a method of setting and delivering QoS parameters of a lower layer when a service request of an application layer is completed after initial access is completed.

The second PDF may be included in the anchor control station, and may exist as a separate network entity to cover one network access provider (NAP). If the second PDF exists as a separate network entity, the second PDF may adjust QoS policies of different NSPs comprehensively through communication with the first PDF belonging to another NSP.

The output of the first PDF is QoS parameters of the IP layer. However, when the NAP can control the first PDF or the authentication server located in the core network as one of the NSPs, the first PDF and the authentication server may serve as the second PDF, and the QoS policy of the first PDF and The charging policy and the QoS policy and the charging policy of the authentication server may be set identically. According to another embodiment, when the first PDF of each NSP obtains a mapping relationship between the QoS parameter of the IP layer and the QoS parameter of the radio access network due to offline behavior of the system operator, the first PDF serves as the second PDF. Can be done. At this time, if the first PDF serves as the second PDF, the anchor control station including the second PDF should not play the role of the second PDF. Therefore, a control parameter capable of indicating whether the first PDF plays the role of the second PDF is used, and the anchor control station including the second PDF determines whether to perform the function of the second PDF according to the control parameter. To judge.

When the QoS service flow is set during the initial access, the QoS profile of the QoS service flow set during the initial access may be utilized when requesting a service for the terminal. To this end, the PCRF needs to know the information of the QoS service flow currently set. The utilization of the QoS profile is performed by modifying the QoS profile. Therefore, the modification to the QoS profile is transferred from the PCRF to the control station via the first PDF, and the base station starts a DSC procedure to reflect the modification. Or, by the application layer of the terminal triggers the MAC layer of the terminal, the terminal starts the DSC procedure to reflect the modification. However, when the DSC procedure is started by the terminal, it should be determined whether to allow the QoS profile change. Thus, the control station determines whether to allow according to a local policy, or the PCRF notified of the QoS profile change from the control station determines whether to allow.

If the QoS policy of the service station managed by the control station needs to be changed due to the change of the QoS policy of the NSP or NAP, the following procedure is performed. The service flow of a newly initially connected terminal is generated by a new policy. The service flow of the terminal performing reconnection or handover is set to new QoS parameters through the DSC procedure after completion of the ranging procedure. Alternatively, the service flow of the terminal performing reconnection or handover is deleted, and a new service flow according to the new policy is generated through the DSA procedure. In addition, the system reflects the new policy while maintaining the active mode through the DSC procedure for the active mode terminal. Alternatively, the system provides control information informing the active mode terminal of updating the QoS policy, induces the terminal to reconnect by transitioning the terminal to the idle mode, and reflects the new QoS policy upon reconnection.

Referring to the configuration as shown in FIG. 1, the QoS interworking management method proposed by the present invention will be described.

The control station 130 controlling the connection between the terminal 110 and the terminal 110 needs to know the QoS setting type information that can be supported for the terminal 110. This is because the terminal 110 recognizes an available QoS setting type and performs an appropriate operation for the terminal 110. The control station 130 must manage the service flow of the terminals.

According to an embodiment for acquiring the available QoS setting type information, after the authentication procedure is successfully completed during the initial access process of the terminal 110, the control station 130 provides the available QoS setting type information of the terminal 110. Is obtained by one of the following methods. First, the authentication server 150 triggers an SPR, obtains available QoS setting type information from the SPR, and then transmits the available QoS setting type information in an authentication success confirmation message or a registration procedure message, or independently. Transmits the available QoS configuration type information through an IN message. Second, the authentication server 150 triggers the SPR so that the SPR directly provides available QoS setting type information to the control station 130, or the SPR triggers the PDF 150 again so that the PDF 150 ) Passes to the control station 130. Third, when the control station 130 requests the PDF 150, the PDF 150 obtains the available QoS setting type information in association with the SPR, and then provides it to the control station 130, or The PDF 150 triggers the SPR so that the SPR is delivered directly to the control station 130. Here, the available QoS setting type information may be configured as an identifier for each QoS setting type. In addition, the control station 130 transmits the available QoS setting type information provided from the authentication server 150 to the terminal 110. Thus, the control station 130 and the terminal 110 obtains available QoS setting type information of the terminal 110.

Another embodiment for obtaining available QoS setting type information of the terminal 110 and the control station 130 is as follows. During the initial access procedure of the terminal 110, the terminal 110 informs the control station 130 of its type. Here, the type is for the purpose or mobility of the terminal, for example, the terminal is classified into a personal computer (PC) that is fixedly used, a cell phone that guarantees mobility. The control station 130 confirming the type of the terminal determines the available QoS setting type of the terminal 110 according to the terminal type vs. QoS setting type information previously input. That is, the QoS setting type according to the terminal type is predetermined. For example, the terminal such as the PC is preferably a static type or a semi-dynamic type, and the terminal such as the cell phone is preferably a dynamic type. Thus, the control station 130 and the terminal 110 obtains available QoS setting type information of the terminal 110. Here, the terminal type versus QoS setting type information is transmitted from the operator management server 160 to the control station 130 or from the authentication server 150 to the control station 130.

First, the terminal 110 transmits a service request message through an application layer to use a service. The PDF 140 recognizes the request of the terminal 110 by checking the service request message transmitted through an application layer, and triggers the addition of a service flow according to the available QoS setting type of the terminal 110. Or determine whether to trigger a service flow change. For example, when the QoS setting type of the terminal 110 is a dynamic type, the PDF 140 triggers the service flow addition to the terminal 110 or the base station 120. In addition, when the QoS setting type of the terminal 110 is a dynamic type or a semi-dynamic type, the PDF 140 triggers a service flow change to the terminal 110 or the base station 120.

 In this case, an embodiment for checking available QoS setting type information of the PDF 140 is as follows. The PDF 140 obtains the available QoS setting type information of the terminal 110 by interworking with other equipment that knows the available QoS setting type information of the terminal 110. In this case, the PDF 140 uses an identifier of the terminal 110, for example, an NAI, an IP address, or a MAC address. For example, the SPR server or the authentication server 150 may manage the available QoS setting type information of the terminal 110. As another embodiment, the terminal 110 configures session description (SD) information included in a message of an application layer differently according to a QoS setting type. For example, the session description information includes items such as a port number, a CS (ClaSsification) rule, and the like, and the terminal 110 deletes or adds some items of the session description information. It may indicate a QoS configuration type. In this case, the PDF 140 may check the available QoS setting type of the terminal 110 through the session description information included in the application layer message.

Sometimes, a situation may arise in which the terminal 110 requests service flow processing that is not allowed. For example, a situation may occur in which a terminal allowing only a static type or a semi-dynamic type is requested to add a service flow. In this case, it is difficult to prohibit application layer message transmission of the terminal 110 in advance. Therefore, the core network side device, that is, the authentication server 150 or the PDF 140 notifies the ASN that a request is not allowed and prohibits the processing of the corresponding service flow. Alternatively, when a MAC layer request for a service flow is generated from the terminal 110 after a message exchange at an application layer, the ASN recognizes this and prohibits the service flow processing.

In addition, when the terminal 110 requests a service flow addition procedure or a service flow change procedure, the ASN may inquire the PDF 140 whether to allow the requested procedure. In this case, the PDF 140 notifies the control station 130 by interworking with the authentication server 150 or by determining whether the permission is allowed.

In addition, the ASN and the terminal 110 may change the service flow mode through a service flow change procedure according to the presence or absence of traffic without triggering from a higher layer. For example, when downlink traffic occurs, the ASN can check this, so that the base station 120 requests a service flow change. In addition, when the uplink traffic occurs, the terminal 110 can confirm this, so that the terminal 110 requests a service flow change.

In addition, after the message exchange procedure of the application layer is completed, the terminal 110 may internally start the service flow processing procedure by triggering the MAC layer. And, in the case of the semi-dynamic type, the service flow change procedure is performed for service flow mode transition or QoS parameter change. Therefore, when the terminal transmits the application layer message, it indicates what the purpose of the service flow change procedure. For example, the purpose of the service flow change procedure may be expressed using session description information or using a newly defined parameter.

Hereinafter, the configuration and operation of Network Entities (NEs) for supporting a complex QoS configuration type as described above will be described in detail with reference to the drawings.

2 is a block diagram of a terminal in a broadband wireless communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the terminal includes a controller 202, a message generator 204, a data buffer 206, a message interpreter 208, a transmitter 210, and a receiver 212.

The controller 202 performs control for service flow processing and data transmission and reception. In particular, in accordance with the present invention, the control unit 202 checks its available QoS setting type information when the power is turned on and performs initial access, processes the service flow according to the available QoS setting type, and performs communication. Control to perform. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

The message generator 204 generates a control message to be transmitted. For example, the message generator 204 generates a control message of the MAC layer for service flow processing and a control message of an application layer for service use. In particular, according to the present invention, the message generating unit 204 generates a control message including the terminal type information for checking the available QoS setting type of the base station or the control station.

The data buffer 206 temporarily stores data transmitted and received with the base station. For example, the data is voice packet, multimedia content, and the like for VoIP service. The message interpreter 208 interprets the received control message. In particular, according to the present invention, the message analysis unit 208 interprets a control message including the available QoS setting type information, and provides the available QoS setting type information to the control unit 202.

The transmitter 210 converts the information bit string into a radio frequency (RF) band signal and transmits the information to a base station through an antenna. Specifically, the transmitter 210 encodes the information bit string and converts the encoded bit string into an encoded bit string, and modulates the encoded bit string and converts the complex bit into a complex symbol. The transmitter 210 maps the complex symbols to subcarriers, generates an OFDM symbol through an Inverse Fast Fourier Transform (IFFT) operation, and up-converts the RF symbol to an RF band for transmission through an antenna.

The receiver 212 converts an RF band signal received from a base station through an antenna into an information bit string. Specifically, the receiver 212 down-converts the RF band signal received through the antenna, divides the RF band signal into OFDM symbols, and converts them into complex symbols for each subcarrier through FFT (Fast Fourier Transform) operation. The receiver 212 demodulates a complex symbol and converts the complex symbol into an encoded bit string, and decodes the encoded bit string to restore an information bit string.

3 is a block diagram of a base station in a broadband wireless communication system according to an exemplary embodiment of the present invention.

As shown in FIG. 3, the base station includes a receiver 302, a transmitter 304, a message interpreter 306, a data buffer 308, a message generator 310, a controller 312, and a QoS manager ( 314).

The receiver 302 converts an RF band signal received from a terminal through an antenna into an information bit string. Specifically, the receiver 302 down-converts the RF band signal received through the antenna, divides the RF band signal into OFDM symbols, and converts them into complex symbols for each subcarrier through FFT operation. The receiver 302 demodulates a complex symbol to convert it into an encoded bit string, and decodes the encoded bit string to restore an information bit string.

The transmitter 304 converts the information bit string into an RF band signal and transmits the information to a terminal through an antenna. Specifically, the transmitter 304 encodes the information bit string and converts the encoded bit string into an encoded bit string, and modulates the encoded bit string and converts the encoded bit string into a complex symbol. The transmitter 304 maps the complex symbols to the subcarriers, generates an OFDM symbol through an IFFT operation, and converts the uplink into an RF band to transmit through an antenna.

The message interpreter 306 interprets the control message received from the terminal. In other words, the message interpreter 306 interprets the control message of the MAC layer for wireless access of the terminal. In particular, according to the present invention, the message interpreter 306 interprets the control message including the terminal type information received during the initial connection of the terminal, and provides the terminal type information to the controller 312. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

The data buffer 308 temporarily stores data transmitted and received with the terminal. For example, the data is voice packet, multimedia content, and the like for VoIP service. The message generator 310 generates a control message to be transmitted to the terminal. In particular, according to the present invention, the message generator 310 generates a control message including the available QoS setting type information of the terminal.

The controller 312 performs control for service flow processing and data transmission and reception. In particular, according to the present invention, the controller 312 controls to transmit the available QoS setting type information to the terminal initially connected, processes the service flow according to the available QoS setting type and controls to perform communication with the terminal. .

The QoS manager 314 checks the available QoS setting type information of the terminal and provides it to the controller 312. In this case, the function of the QoS manager for checking the available QoS setting type information varies according to embodiments. According to the first embodiment of the present invention, the QoS management unit 314 interoperates with an authentication server to obtain available QoS setting type information of the terminal from the authentication server. According to the second embodiment of the present invention, the QoS manager 314 stores a preset terminal type vs. QoS setting type information table, and checks available QoS setting type information with reference to the table.

Here, the function of checking the available QoS setting type information may be performed at the control station rather than at the base station. In this case, the controller 312 of the base station requests the available QoS setting type information of the terminal to the control station, and receives the received QoS setting type information to the terminal. In this case, the QoS manager 314 is not included or performs only a function of receiving available QoS setting type information from the control station.

4 is a block diagram of a control station in a broadband wireless communication system according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the control station includes a base station communication unit 402, a backbone network communication unit 404, and a QoS management unit 404.

The base station communication unit 402 performs a function for transmitting and receiving control messages and data with the subordinate base station. For example, the base station communication unit 402 receives a control message for requesting the available QoS setting type information of the terminal from the base station, and transmits a control message including the available QoS setting type information. The backbone network communication unit 404 performs a function for transmitting and receiving the NE and control messages and data of the backbone network. For example, the backbone network communication unit 404 receives the available QoS setting type information of the terminal from the authentication server. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

The QoS manager 406 checks the available QoS setting type information of the initially connected terminal and provides it to the base station communication unit 402. In this case, the function of the QoS manager 406 for checking the available QoS setting type information varies depending on the embodiment. According to the first embodiment of the present invention, the QoS management unit 406 obtains the available QoS setting type information of the terminal from the authentication server in association with the authentication server through the backbone network communication unit 404. According to the second embodiment of the present invention, the QoS manager 406 stores a preset terminal type vs. QoS setting type information table, and confirms available QoS setting type information with reference to the table.

5 is a block diagram of a PDF device in a broadband wireless communication system according to an embodiment of the present invention.

As shown in FIG. 5, the PDF device includes a communication unit 502, a QoS parameter determination unit 504, a control unit 506, and a QoS type checking unit 508.

The communication unit 502 performs a function for transmitting and receiving information with another NE in the system. The QoS parameter determiner 504 determines QoS parameters of a newly added service flow.

The controller 506 triggers a service flow processing procedure according to an available QoS setting type of the terminal when a service request is made through the application layer of the terminal. For example, the controller 506 triggers a service flow addition procedure when the QoS configuration type is a dynamic type, and triggers a QoS parameter change procedure of a service flow when the QoS configuration type is a semi-dynamic type or a dynamic type. do. That is, the controller 506 controls the communication unit 502 to transmit a triggering signal. In this case, the target NE of the triggering signal may be a terminal, a base station, or a control station. In addition, the controller 506 notifies the access service network, that is, the base station or the control station, of the event, when an event occurs in which the terminal requests a service flow processing procedure that violates the available QoS setting type.

The QoS type checking unit 508 verifies the available QoS setting type information of the terminal. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above. The QoS type checking unit 508 checks the available QoS setting type information in association with other NEs in the system, or uses the session description information included in the application layer control message received from the terminal. Check the information. For example, the QoS type checking unit 508 checks the available QoS setting type information in association with an authentication server.

6 illustrates an operation procedure of a terminal in a broadband wireless communication system according to a first embodiment of the present invention.

Referring to FIG. 6, the terminal determines whether to perform an initial access procedure in step 601. For example, the terminal performs an initial access procedure when the power is turned on.

If the initial access procedure needs to be performed, the terminal proceeds to step 603 to check whether the available QoS setting type information is received during the initial access procedure. For example, the available QoS setting type information is received after the authentication procedure is completed. The available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

When the available QoS setting type information is received, the terminal proceeds to step 605 to complete the initial access procedure, and then performs a service flow and performs communication according to the available QoS setting type.

7 illustrates an operation procedure of a terminal in a broadband wireless communication system according to a second embodiment of the present invention.

Referring to FIG. 7, the terminal determines whether to perform an initial access procedure in step 701. For example, the terminal performs an initial access procedure when the power is turned on.

If the initial access procedure needs to be performed, the terminal proceeds to step 703 and transmits its own terminal type information during the initial access procedure. Here, the terminal type information relates to the use or mobility of the terminal. For example, the terminal is classified into a PC that is fixedly used and a cell phone that guarantees mobility.

In step 705, the terminal determines whether the available QoS setting type information is received. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

When the available QoS setting type information is received, the terminal proceeds to step 707 to complete the initial access procedure, and then performs a service flow and performs communication according to the available QoS setting type.

8 illustrates an operation procedure of a base station in a broadband wireless communication system according to a first embodiment of the present invention.

Referring to FIG. 8, the base station determines whether the terminal performs initial access in step 801.

When the terminal performs initial access, the base station proceeds to step 803 to obtain available QoS setting type information of the terminal in association with the authentication server. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

After obtaining the available QoS setting type information, the base station proceeds to step 805 and transmits the available QoS setting type information to the terminal.

Thereafter, the base station proceeds to step 807 to complete the initial access procedure, and processes the service flow according to the available QoS setting type to perform communication.

In the description with reference to FIG. 8, the base station acquires available QoS configuration type information in association with the authentication server in step 803. In this case, the interworking with the authentication server may be performed by the control station. In this case, the base station merely receives available QoS setting type information from the control station and transmits it to the terminal.

9 illustrates an operation procedure of a base station in a broadband wireless communication system according to a second embodiment of the present invention.

Referring to FIG. 9, the base station determines whether the terminal performs initial access in step 901.

When the terminal performs initial access, the base station proceeds to step 903 and checks whether terminal type information is received from the terminal. In this case, for example, the terminal type information relates to the use or mobility of the terminal, and the terminal is classified into a PC that is fixedly used and a cell phone that guarantees mobility.

When the terminal type information is received, the base station proceeds to step 905 to check the QoS setting type information according to the terminal type. That is, the base station stores a preset terminal type vs. QoS setting type information table, and checks available QoS setting type information with reference to the table. The available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

After confirming the available QoS setting type information, the base station proceeds to step 907 and transmits the available QoS setting type information to the terminal.

Thereafter, the base station proceeds to step 909 to complete the initial access procedure, and processes the service flow according to the available QoS setting type to perform communication.

In the description with reference to FIG. 9, the base station determines available QoS setting type information with reference to the table stored in step 905. At this time, the table may be managed by a control station, in which case the base station only receives available QoS setting type information from the control station and transmits it to the terminal.

10 is a flowchart illustrating an operation procedure of a control station in a broadband wireless communication system according to a first embodiment of the present invention.

Referring to FIG. 10, in step 1001, the control station checks whether information of a terminal initially connected to the base station is received from the base station.

When the information of the initial accessing terminal is received, the control station proceeds to step 1003 to obtain available QoS setting type information of the terminal in association with the authentication server. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

After acquiring the available QoS setting type information, the control station proceeds to step 1005 and transmits the available QoS setting type information to the base station.

11 is a flowchart illustrating an operation procedure of a control station in a broadband wireless communication system according to a second embodiment of the present invention.

Referring to FIG. 11, in step 1101, the control station checks whether information of a terminal initially connected to the base station is received from the base station. In this case, the terminal information includes terminal type information.

When the information of the initially connected terminal is received, the control station proceeds to step 1103 to check the QoS setting type information according to the terminal type. That is, the control station stores a preset terminal type vs. QoS setting type information table, and confirms available QoS setting type information with reference to the table. For example, the available QoS setting type information may include one or a combination of two or more of the QoS setting types shown in Table 1 above.

After acquiring the available QoS setting type information, the control station proceeds to step 1105 to transmit available QoS setting type information to the base station.

12 illustrates an operation procedure of a PDF in a broadband wireless communication system according to an embodiment of the present invention.

Referring to FIG. 12, in step 1201, the PDF checks whether a service request of a terminal through an application layer occurs.

When the service request of the terminal occurs, the PDF proceeds to step 1203 to check the available QoS setting type of the terminal. In this case, the PDF checks the available QoS configuration type by interworking with another NE (eg, authentication server, SPR) in the system or by using session description information included in the application layer message. For example, the available QoS setting type is one of the QoS setting types shown in Table 1 or a combination of two or more.

After confirming the available QoS configuration type, the PDF proceeds to step 1205 to determine whether the request violates the available QoS configuration type.

If not in violation of the available QoS configuration type, the PDF proceeds to step 1207 to trigger a service flow processing procedure suitable for the available QoS configuration type. For example, the PDF triggers a service flow addition procedure when the QoS configuration type is a dynamic type, and triggers a service flow change procedure when the QoS configuration type is a semi-dynamic type or a dynamic type. In this case, the target NE of the triggering signal may be a terminal, a base station, or a control station.

On the other hand, if it violates the available QoS configuration type, the PDF proceeds to step 1209 to notify the access service network, that is, the base station or the control station, that the terminal has requested a service flow processing procedure that violates the available QoS configuration type. .

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

1 is a diagram showing a schematic configuration of a broadband wireless communication system according to the present invention;

2 is a block diagram of a terminal in a broadband wireless communication system according to an embodiment of the present invention;

3 is a block diagram of a base station in a broadband wireless communication system according to an embodiment of the present invention;

4 is a block diagram of a control station in a broadband wireless communication system according to an embodiment of the present invention;

FIG. 5 is a block diagram of a PDF (Policy Decision function) device in a broadband wireless communication system according to an embodiment of the present invention; FIG.

6 is a diagram illustrating an operation procedure of a terminal in a broadband wireless communication system according to a first embodiment of the present invention;

7 is a diagram illustrating an operation procedure of a terminal in a broadband wireless communication system according to a second embodiment of the present invention;

8 is a diagram illustrating an operation procedure of a base station in a broadband wireless communication system according to a first embodiment of the present invention;

9 is a diagram illustrating an operation procedure of a base station in a broadband wireless communication system according to a second embodiment of the present invention;

10 is a flowchart illustrating an operation procedure of a control station in a broadband wireless communication system according to a first embodiment of the present invention;

11 is a diagram illustrating an operation procedure of a control station in a broadband wireless communication system according to a second embodiment of the present invention;

12 is a diagram illustrating an operation procedure of a PDF in a broadband wireless communication system according to an embodiment of the present invention.

Claims (38)

In a broadband wireless communication system, An access service network (ASN) supporting a first quality of service (QoS) setup type for the first terminal and a second quality of service (QoS) setup type for the second terminal; A first terminal processing a service flow (SF) according to the first QoS configuration type and performing communication; And a second terminal for processing a service flow and performing communication according to the second QoS configuration type. The method of claim 1, The first QoS setting type and the second QoS setting type are one of a dynamic type, a semi dynamic type, and a static type. The method of claim 1, The access service network is characterized by consisting of at least one base station and at least one control station. The method of claim 1, And the first terminal acquires available QoS setting type information from the access service network after completion of an authentication procedure during an initial access process. The method of claim 4, wherein Further comprising an authentication server for managing the QoS setting type information of the terminals, The access service network, after completing the authentication procedure of the first terminal, obtains the QoS setting type information of the first terminal from the authentication server, and transmits the QoS setting type information to the first terminal. . The method of claim 1, And the first terminal notifies its type to the access service network, and receives available QoS setting type information according to the type. The method of claim 6, The access service network checks the available QoS setting type information according to the type of the terminal, and provides the available QoS setting type information to the first terminal. The method of claim 1, When the terminal requests the use of the service through an application layer message, it checks the QoS configuration type of the terminal and generates a PDF (Policy Decision function) that triggers one of a service flow addition procedure or a service flow change procedure according to the QoS configuration type. The system further comprises. The method of claim 8, The PDF is characterized in that for confirming the QoS setting type of the terminal through other equipment in the system. The method of claim 9, The other equipment in the system, characterized in that the authentication server or IMS (IP Multimedia Subsystem) server. The method of claim 8, The PDF is characterized in that for confirming the QoS setting type of the terminal by using the session description (SD) information contained in the application layer message sent by the terminal. According to claim 8, The PDF, Triggers a service flow addition procedure for a request of a dynamic type terminal; A system for triggering a service flow change procedure on a request of a semi-dynamic type or static type terminal. The method of claim 8, The PDF informs the access service network of the event occurrence when an event for requesting a service flow processing procedure violating an available QoS setting type is generated through an application layer. And the access service network prohibits a service flow processing procedure that violates the available QoS configuration type. The method of claim 1, And a third terminal which processes the service flow and performs communication according to different QoS setting types for each service flow. A terminal device in a broadband wireless communication system, A reception unit configured to receive available quality of service (QoS) setup type information including at least one of a dynamic type, a semi dynamic type, and a static type at an initial connection; And a controller for processing a service flow and controlling to perform communication according to the available QoS setting type. The method of claim 15, The apparatus further comprises a transmitting unit for transmitting the terminal type information to the base station. A base station apparatus in a broadband wireless communication system, A transmitter that transmits at least one available quality of service (QoS) setup type information of a dynamic type, a semi dynamic type, and a static type to the terminal upon initial connection of the terminal. Wow, And a controller for processing a service flow and controlling to perform communication according to the available QoS setting type. The method of claim 17, Further comprising a management unit for obtaining available QoS setting type information from the authentication server after the authentication procedure of the terminal is completed, The transmitting unit, characterized in that for transmitting the available QoS setting type information of the terminal obtained from the authentication server to the terminal. The method of claim 17, A receiving unit for receiving terminal type information from the terminal; A management unit may be further configured to identify available QoS setting type information according to the terminal type by referring to a stored terminal type versus available QoS setting type information table. The transmitting unit, characterized in that for transmitting the available QoS setting type information according to the terminal type to the terminal. A control station apparatus in a broadband wireless communication system, A management unit for checking available quality of service (QoS) setup type information of a terminal to be initially connected; It includes a communication unit for providing the available QoS setting type information to a base station, The available QoS configuration type includes at least one of a dynamic type, a semi dynamic type, and a static type. The method of claim 20, The management unit, after completing the authentication procedure of the terminal, characterized in that to obtain the available QoS setting type information of the terminal from the authentication server. The method of claim 20, The communication unit receives the terminal type information of the terminal from the base station, The management unit checks the available QoS setting type information according to the terminal type. In a PDF (Policy Decision function) device in a broadband wireless communication system, A confirmation unit for checking an available quality of service (QoS) setup type of the terminal when the terminal requests service use through an application layer message; A communication unit for transmitting a signal triggering one of a service flow addition procedure or a service flow change procedure according to the available QoS configuration type, The available QoS configuration type includes at least one of a dynamic type, a semi dynamic type, and a static type. The method of claim 23, wherein The confirmation unit may obtain the available QoS setting type information from another device in the system, or confirm the available QoS setting type information by using session description (SD) information included in the application layer message. Characterized in that the device. The method of claim 23, wherein The communication unit, When the QoS setting type is a dynamic type, transmitting a signal triggering a service flow addition procedure, And transmitting the signal for triggering a service flow change procedure when the QoS configuration type is a semi-dynamic type or a dynamic type. The method of claim 23, wherein The communication unit, when the event occurs to request a service flow processing procedure that violates the available QoS setting type through the application layer, the device characterized in that for transmitting the message notifying the access service network. In the method of operating a terminal in a broadband wireless communication system, Receiving, upon initial connection, available Quality of Service (QoS) setup type information including at least one of a dynamic type, a semi dynamic type, and a static type; And processing a service flow and performing communication according to the available QoS setting type. The method of claim 27, The method comprising the step of transmitting the terminal type information to the base station. A method of operating a base station in a broadband wireless communication system, At the time of initial access of the terminal, a process for transmitting at least one available quality of service (QoS) setup type information of a dynamic type, a semi dynamic type, and a static type to the terminal; and, And processing a service flow and performing communication according to the available QoS setting type. The method of claim 29, Acquiring the available QoS setting type information from the authentication server after the authentication procedure of the terminal is completed; And transmitting the available QoS setting type information of the terminal obtained from the authentication server to the terminal. The method of claim 29, Receiving terminal type information from the terminal; Identifying available QoS setting type information according to the terminal type by referring to a stored terminal type versus available QoS setting type information table; And transmitting the available QoS setting type information according to the terminal type to the terminal. A method of operating a control station in a broadband wireless communication system, Checking available quality of service (QoS) setup type information of an initially connected terminal; Providing the available QoS setting type information to a base station; The available QoS configuration type includes at least one of a dynamic type, a semi dynamic type, and a static type. The method of claim 32, The available QoS setting type information of the terminal is obtained from an authentication server after the authentication procedure of the terminal is completed. The method of claim 32, The process of confirming the available QoS setting type information of the initially connected terminal, Receiving terminal type information of the terminal from the base station; And checking the available QoS setting type information according to the terminal type. In the method of operating a PDF (Policy Decision function) device in a broadband wireless communication system, When the terminal requests the use of a service through an application layer message, checking an available quality of service (QoS) setup type of the terminal; Transmitting a signal triggering one of a service flow addition procedure or a service flow change procedure according to the available QoS configuration type; The available QoS configuration type includes at least one of a dynamic type, a semi dynamic type, and a static type. The method of claim 35, wherein The available QoS configuration type information is obtained from other equipment in the system, or confirmed using session description (SD) information included in the application layer message. The method of claim 35, wherein The process of transmitting a signal triggering one of a service flow addition procedure or a service flow change procedure, If the QoS configuration type is a dynamic type, transmitting a signal for triggering a service flow addition procedure; If the QoS configuration type is a semi-dynamic type or a dynamic type, transmitting a signal for triggering a service flow change procedure. The method of claim 35, wherein And transmitting, by the terminal, an event for requesting a service flow processing procedure violating an available QoS configuration type through an application layer, a message for notifying the access service network of the event occurrence.

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