KR101352292B1 - SYSTEM FOR CONTROLLING QoS IN FIXED MOBILE CONVERGENCE NETWORK - Google Patents

Abstract

The present invention relates to a system and a method for controlling a service quality in a wired / wireless integrated network. The present invention relates to an application apparatus for requesting a resource when a service request is received from a subscriber station in a wired / wireless integrated network, and to receiving the resource request from the application apparatus. It includes a resource mediation device that identifies the connected network and delivers the resource request to the policy-determination device on the corresponding network side, and uses the wired network-based NGN (Next Generation Network) network and the wireless network-based WCDMA (wideband code division multiple). Disclosed is a technology for providing a high quality wired / wireless integrated service while being used in a wired / wireless integrated network without changing the function of a policy decision device, a core service quality control device of a network.

Description

Quality of Service Control System in Wired / Wireless Integrated Network and its Method {SYSTEM FOR CONTROLLING QoS IN FIXED MOBILE CONVERGENCE NETWORK}

1 is a configuration diagram of a quality of service control system applied to a conventional NGN network or WCDMA network separately.

2 is a flowchart illustrating a method of controlling a quality of service in a conventional NGN network.

3 is a flowchart illustrating a method of controlling a quality of service applied to a conventional WCDMA network.

4 is a block diagram of a service quality control system of a wired / wireless integrated network according to an embodiment of the present invention.

5 is a flowchart illustrating a service quality control method in a wired / wireless integrated network according to an embodiment of the present invention.

Description of the Related Art

10, 100: subscriber terminal

20, 200: Applied Device

30, 400, 600: Policy Decision Device

40, 500, 700: Policy enforcement device

300: resource mediation device

The present invention relates to a service quality control system and method in a wired / wireless integrated network, and more particularly, to core services of a next generation network (NGN) network and a wideband code division multiple access (WCDMA) network based on a wireless network. It is a technology that can provide high quality wired / wireless integrated service without changing the function of policy control device, which is a quality control device, as it is used in wired / wireless integrated network.

The wired communication network is developing into an IP-based NGN (Next Generation Network) network, and the mobile communication network is also being developed into an IP-based wideband code division multiple access (WCDMA) network. Accordingly, wired and mobile networks, which have been developed so far, are expected to evolve into IP-based fixed mobile convergence networks (FMC).

However, the conventional apparatus for quality of service control has been implemented separately in wired and wireless networks.

1 is a configuration diagram of a quality of service control system that is separately applied to a conventional NGN network or WCDMA network.

The conventional quality of service control system includes a subscriber station (10), an application device (20), a policy decision device (30), and a policy enforcement device (40).

A service quality control method when the conventional service quality control system having the above configuration is applied to a wired network-based NGN network will be described with reference to FIG. 2.

First, when receiving a service request from the subscriber terminal 10 (S11), the application device 20 transmits a resource request message to the policy decision device 30 (S12). At this time, the policy determination apparatus 30 is a policy determination apparatus for controlling the quality of service in a wired network-based NGN network, and a resource request message includes a flow ID and a QoS parameter. Here, Flow ID is a unique ID that distinguishes application services by flow, and generally, an originating / destination IP address, an originating / incoming TCP / UDP port, and a protocol ID are used. In addition, the QoS parameter is a parameter representing the traffic characteristics of the application service flow, and the maximum bandwidth, the minimum bandwidth, the average bandwidth, and the delay are used.

After that, the policy determination device 30 receives the resource request from the application device 20 and performs an admission control for checking whether the NGN network is present (S13), and then performs a policy to the policy enforcement device 40. Policy Enforcement request is sent down (S14).

Thus, the policy enforcement device 40 enforces a policy for service quality control on the network equipment (S15), and transmits the result to the policy determination device 30 (S16).

Subsequently, the policy decision apparatus 30 sends the result of the resource request to the application apparatus 20 in a response message (S17). The application device 20 receives the response from the policy determination device 30 and sends a response message to the service request to the subscriber station 10 (S18), thereby completing the service quality control for providing a high quality service.

Meanwhile, a service quality control method when the conventional service quality control system of FIG. 1 is applied to a WCDMA network based on a wireless network will be described with reference to FIG. 3.

When the service request is received from the subscriber station 10 (S21), the application device 20 transmits a resource request message to the policy decision device 30 (S22). Here, the policy determination apparatus 30 is a policy determination apparatus for quality of service control in a wireless network based WCDMA network, and the resource request message includes a flow ID and a QoS parameter.

Thereafter, the policy determination apparatus 30 generates a token unique to the flow after receiving the resource request from the application apparatus 20 (S23). This token is encrypted because it is needed for later certification of the policy decision request from the policy enforcement device 40.

Subsequently, the policy determination device 30 transmits a response message including the generated token to the application device 20 (S24). Accordingly, the application device 20 transmits the response message received from the policy determination device 30 to the subscriber station 10 (S25).

Thereafter, the subscriber station 10 requests the policy enforcement to the policy enforcement apparatus 40 after receiving the response message from the application apparatus 20 (S26). In this case, the policy enforcement request message transmitted for the policy enforcement request includes a token and a QoS parameter for the corresponding flow received from the application device 20.

Subsequently, the policy enforcement device 40 requests a policy decision from the policy decision device 30 (S27). After determining whether to accept the policy based on the token and the QoS parameters (S28), the policy decision apparatus 30 sends a response to the policy enforcement apparatus 40 (S29).

Thus, the policy enforcement device 40 responds to the terminal after the policy enforcement for the network equipment according to the response result from the policy determination device 30 (S30), thereby completing the service quality control for providing a high quality service. (S31).

As such, in the related art, a service quality control apparatus is separately implemented in a wired network-based NGN network and a wireless network-based WCDMA network. In other words, in the past, since the NGN and WCDMA networks have been developed separately for each network characteristic, many policy functions need to be changed in order to use them in a wired / wireless integrated network. There was a problem.

Accordingly, the present invention for solving the above-described problems is to mediate resources so that existing policy-determining devices developed in wired network-based NGN network and wireless network-based WCDMA network can be easily controlled in wired / wireless integrated network without changing the functions. The purpose is to provide functionality.

The service quality control system in a wired / wireless integrated network according to an embodiment of the present invention for achieving the above object is an application device for requesting a resource when receiving a service request from a subscriber station in a wired / wireless integrated network, and resource request from the application device. When receiving, characterized in that it comprises a resource mediation device for identifying the network connected to the subscriber terminal and transmits the resource request to the policy decision apparatus of the corresponding network side.

In addition, the service quality control method in a wired / wireless integrated network according to an embodiment of the present invention, when receiving a service request from a subscriber station in a wired / wireless integrated network, the first process of identifying the network to which the subscriber terminal is connected, and the network And a second step of requesting a resource for quality of service control and receiving the result from the network decision-making apparatus according to the identification result.

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

4 is a configuration diagram of a service quality control system of a wired / wireless integrated network according to an embodiment of the present invention.

The service quality control system in the wired / wireless integrated network of the present invention includes a subscriber station 100, an application device 200, a resource mediator 300, a policy decision device F 400, and a policy enforcement device F 500. ), The policy decision apparatus M 600, and the policy enforcement apparatus M 700.

The subscriber station 100 is a terminal used in a wired / wireless integrated network.

The application device 200 receives a service request from the subscriber terminal 100 and makes a resource request to the resource mediation device 300. At this time, the application device 200 transmits a resource request message for the resource request, the resource request message includes a flow ID (Flow ID) and QoS parameters. Here, the flow ID is a unique ID that distinguishes the application services by flow, and an originating / incoming IP address, an originating / incoming TCP / UDP port, and a protocol ID are used. The QoS parameter is a traffic characteristic of an application service flow. The maximum bandwidth, the minimum bandwidth, the average bandwidth, and the delay are used.

The resource mediation apparatus 300 analyzes a flow ID for a resource request from the application apparatus 200 to determine whether the terminal is connected to a next generation network (NGN) network or a wideband code division multiple access (WCDMA) network. It is determined whether it is connected to the network and transmitted to the policy decision apparatus (400, 600) of the network to control the network resources according to the network.

To this end, the resource arbitration apparatus 300 includes a Global Topology DB (GTDB) 310 that stores IP block information allocated for each network. Accordingly, the resource mediation apparatus 300 analyzes IP information corresponding to the flow ID received from the application apparatus 200 so as to identify the network to which the corresponding subscriber station 100 is connected. In this case, the IP block information of the GTDB 310 may be obtained from an IP address management system (not shown) or manually input by an operator.

The policy decision device F 400 and the policy decision device M 600 receive a resource request from the resource arbitration device 300, and request policy enforcement to the policy enforcement device F 500 and the policy enforcement device M 700. Or perform a policy response. At this time, the policy decision device F 400 is a policy decision device (PDF: Policy Decision Function) for a wired network, and the policy decision device M 600 is a policy decision device for a wireless network based WCDMA network. At this time, the policy decision apparatus F 400 and the policy decision apparatus M 600 have different functions and characteristics according to the characteristics of each communication network.

The policy enforcement device F 500 and the policy enforcement device M 700 receive the policy enforcement request or policy response from the policy decision device F 400 and the policy decision device M 600, respectively, and actually execute the policy on the wired or wireless network. Apply.

According to the present invention having the above configuration, the resource arbitration apparatus 300 determines whether the network to which the subscriber station 100 is connected is an NGN network or a WCDMA network, and requests a policy from a policy determination apparatus of a corresponding network. Application services in the wired / wireless integrated network where NGN and WCDMA networks coexist without changing the functions of the policy decision device F 400 and the policy decision device M 600, which are the key control devices to guarantee the quality of application services in the WCDMA network. Ensure quality.

Hereinafter, a service quality control method in a wired / wireless integrated network according to an embodiment of the present invention will be described in detail.

First, when the application device 200 receives a service request from the subscriber terminal 100 (S101), the application device 200 sends a resource request message to the resource mediation device 300 (S102). At this time, the resource request message includes a flow ID and a QoS parameter.

Accordingly, the resource mediation apparatus 300 determines whether the subscriber station 100 requesting service using the flow ID is connected to the wired network-based NGN network or the wireless network-based WCDMA network (S103). . In this case, the GTDB 310 in the resource mediation apparatus 300 includes IP block information allocated for each network, so that the network to which the subscriber station 100 is connected may be identified through a flow ID. Also, the IP block information of the GTDB 310 may be obtained from an IP address management system (not shown) or may be manually input by an operator.

As a result of the determination in step S103, if the subscriber station 100 is connected to the NGN network, the resource arbitration apparatus 300 transmits the resource request to the policy decision apparatus F 400 (S104).

The policy determination device F 400 receiving the resource request from the resource arbitration device 300 performs the admission control for checking the existence of resources through the same procedure as in the NGN network (S105), and the policy enforcement device F 500. Request policy enforcement (S106). Accordingly, the policy enforcement apparatus F 500 transmits the result to the policy determination apparatus F 400 after executing the policy for controlling the quality of service on the network equipment (S107).

Subsequently, the policy making apparatus F 400 sends a response message to the resource mediator 300 as a result of the resource request, and the resource mediating apparatus 300 replaces the token value in the response message received from the policy making apparatus F 400. A null value is sent to the application device 200, and the application device 200 sends a response message received from the resource mediation device 300 to the subscriber station 100 in response to the service request. (S108), the service quality control for providing a high quality service is completed.

On the other hand, as a result of the determination in step S103, if the subscriber station 100 is connected to the WCDMA network based on the wireless network, the resource mediation apparatus 300 transmits the resource request to the policy decision apparatus M (600) (S109).

Accordingly, the policy determination device M 600 generates a token unique to the flow after receiving the resource request from the resource arbitration device 300 (S110). This token is encrypted since it is required for conformity authentication for the policy decision request coming from the policy enforcement device M 700.

Subsequently, the policy decision apparatus M 600 sends a response message including the generated token to the resource arbitration apparatus 300, and the resource arbitration apparatus 300 sends the response message received from the policy determination apparatus M 600 to the application apparatus. The application device 200 transmits the response message received from the resource mediation device 300 to the subscriber station 100 (S111).

Thereafter, the subscriber station 100 requests the policy enforcement to the policy enforcement apparatus M 700 after receiving the response message from the application apparatus 200 (S112). In this case, the policy enforcement request message transmitted for the policy enforcement request includes a token and a QoS parameter for the corresponding flow received from the application device 200.

Subsequently, the policy enforcement device M 700 requests a policy decision from the policy decision device M 600 (S113). Accordingly, the policy decision apparatus M 600 determines whether to accept based on the token and the QoS parameters (S114), and sends a result to the policy enforcement apparatus M 700 (S115).

Thereafter, the policy enforcement apparatus M 700 provides a high-quality service by responding to the subscriber station 100 after the policy enforcement for the network equipment according to the response result from the policy determination apparatus M 600 (S116). To complete the quality of service control (S117).

As described above, the present invention enables the service quality control to be performed by classifying resources through the resource mediation device 300 without changing the functions of the wired-based policy decision device and the wireless network-based policy decision device in the wired / wireless integrated network. .

As described above, the present invention provides a resource arbitration device between an application device and a policy decision device, and includes a policy decision device used in a wired network-based NGN network and a wireless network-based WCDMA network. It is possible to guarantee the quality of wired / wireless integrated services by enabling service quality control in wired / wireless integrated network without changing the function.

In addition, the preferred embodiment of the present invention for the purpose of illustration, those skilled in the art will be able to various modifications, changes, replacements and additions through the spirit and scope of the appended claims, such modifications and changes are the following claims Should be seen as belonging to.

Claims (13)

An application device for requesting a resource when receiving a service request from a subscriber station in a wired / wireless integrated network; And Receiving a resource request from the application device, the subscriber terminal includes a resource mediation device for identifying the network connected to the resource decision device and transmits the resource request to the network side, The resource arbitration apparatus has a GTDB (Global Topology DB) for storing the IP block information allocated for each network. delete The method of claim 1, wherein the GTDB, A service quality control system in a wired / wireless integrated network, characterized in that the IP block information is constructed using IP information manually input from an IP address management system or an operator. The method of claim 1, wherein the application device, And a resource request message including a flow ID and a QoS parameter for the resource request, to the resource mediation device. The method of claim 4, wherein the resource arbitration device, And analyzing the IP information corresponding to the flow ID received from the application device to identify whether the corresponding subscriber station is connected to a wired network or a wireless network. The method according to claim 1, A policy determination device for a wired network that performs an admission control for checking the existence of resources and receives a policy request when the resource request is received from the resource arbitration device; And And a policy enforcement device for a wired network that executes a policy when the policy enforcement is requested and delivers the result to the policy determination device. 7. The method according to claim 1 or 6, A wireless network policy determination device for generating a unique token and transmitting a response message including the unique token to the subscriber station through the resource mediation device and the application device when the resource request is received from the resource mediation device; And Receiving a policy enforcement request message including the unique token from the subscriber station, requesting a policy decision to the policy decision device to receive a response message to execute a policy and transmit the result to the subscriber station a policy enforcement device for a wireless network Service quality control system in a wired or wireless integrated network, further comprising. Receiving a service request from a subscriber station in a wired / wireless integrated network, identifying a network to which the subscriber station is connected; And A second process of requesting a resource for service quality control and receiving the result from the network decision-making apparatus according to the network identification result; In the first process, upon receiving a service request from the subscriber station, a service request message including a flow ID and a QoS parameter is transmitted to a resource mediator for the service request. Quality control method. delete The method of claim 8, wherein the first process, And analyzing the IP information corresponding to the flow ID in the resource arbitration apparatus to identify whether the network to which the corresponding subscriber station is connected is a wired network or a wireless network. The method of claim 10, wherein the second process, When the network connected to the subscriber station is a wired network, the resource is requested to a wired network policy determination device, and when the network connected to the subscriber station is a wireless network, the resource is requested to the wireless network policy determination device. Quality of Service Control in Integrated Networks. 12. The method of claim 11, A third step of, upon receiving a resource request from the resource mediation device in the wireline network policy determination device, requesting policy enforcement to the wireline network policy enforcement device after performing admission control; And And a fourth process of performing the policy enforcement and transmitting the result to the subscriber station through the resource mediation apparatus. 13. The method according to claim 11 or 12, A fifth process of generating a unique token upon receiving a resource request from the resource mediation apparatus in the wireless network policy determination apparatus, and transmitting a response message including the token to the subscriber station through the resource mediation apparatus; A sixth step of receiving a policy enforcement request message including the token from the subscriber station; A seventh step of requesting a policy decision from the wireless network policy enforcement apparatus that receives the policy enforcement request message to the wireless network policy determination apparatus; An eighth step of determining whether to accept in the wireless network policy determination device and transferring the result to the wireless network policy enforcement device; A method of controlling quality of service in a wired / wireless integrated network, characterized in that a policy is enforced according to a result of the policy determination device and the result is transmitted to the subscriber station.

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