KR20120050805A - System and method for changing access in heterogeneous networks - Google Patents

Abstract

The present invention recognizes the type of application executed in response to a terminal device using a data service in a heterogeneous network environment, and lowers the network change policy based on the application to the terminal device, thereby inducing the terminal device to change the access network. As a result, a heterogeneous network connection change system and method are disclosed that can effectively transfer data traffic by leading network operations to improve data service quality and secure network stability. In the heterogeneous network connection change system of the present invention, application-based policy setting information is defined so that a policy related device recognizes an application executed in a specific terminal device and induces a connection change to a specific network in response to the recognized application type. Generating a network change policy corresponding to the recognized application based on the received application; and providing the network change policy to the specific terminal device, changing the network to which the terminal device accesses according to the received network change policy. do.

Description

System and method for changing heterogeneous manganese connection {SYSTEM AND METHOD FOR CHANGING ACCESS IN HETEROGENEOUS NETWORKS}

The present invention relates to a system and method for changing a connection between heterogeneous networks. More particularly, the present invention relates to a terminal device using a data service in a heterogeneous network environment. Heterogeneous network connection change system and method for improving the data service quality and ensuring network stability by inducing the terminal device to change the access network accordingly, leading the network operating side to effectively transfer the data traffic, and The present invention relates to a terminal device and a method for operating the terminal device, and a method for operating a policy related device and a policy related device.

The present invention relates to a system and method for changing a connection between heterogeneous networks. More particularly, the present invention relates to a terminal device using a data service in a heterogeneous network environment. Heterogeneous network connection change system and method for improving the data service quality and ensuring network stability by inducing the terminal device to change the access network accordingly, leading the network operating side to effectively transfer the data traffic, and The present invention relates to a terminal device and a method for operating the terminal device, and a method for operating a policy related device and a policy related device.

The present invention has been made in view of the above circumstances, and an object of the present invention is to recognize an application executed by a policy related device on a specific terminal device and to change a connection to a specific network in response to the recognized application type. To generate the network change policy corresponding to the recognized application based on the predefined application-based policy setting information, and to provide the network change policy to the specific terminal device, the terminal according to the received network change policy The present invention provides a system and method for changing a connection between heterogeneous networks to change a network to which a device is connected, and leads the network operation to effectively transfer data traffic to improve data service quality and secure network stability.

The present invention has been made in view of the above circumstances, and another object of the present invention is to access a specific network in a heterogeneous network to use a data service, and when a network change policy is received from the outside, based on the network change policy. The terminal device and the method of operating the terminal device determine whether the connection is possible in response to the corresponding network to be changed, and if the connection is possible, attempts to access the corresponding network to be changed through the multi communication unit and changes the connected network. In order to improve the data service quality and secure the network stability by effectively transferring data traffic, the network operation side leads the network operation.

The present invention was created in view of the above circumstances, and another object of the present invention is to store predefined application-based policy setting information for inducing a connection change to a specific network in response to an application type, and A policy related apparatus for recognizing an application executed in a terminal device, generating a network change policy corresponding to the recognized application based on the stored application-based policy setting information, and providing the network change policy to the specific terminal device; It provides a method of operating a policy-related device, and is led by the network operation side to effectively transfer data traffic to support an environment that can improve data service quality and secure network stability.

The heterogeneous network connection change system according to the first aspect of the present invention for achieving the above object comprises: a terminal device for changing a network to be connected according to a received network change policy; And generating a network change policy corresponding to the recognized application based on predefined application-based policy setting information for recognizing an application executed in a specific terminal device and inducing a connection change to a specific network according to the application type. And a policy related device for providing the network change policy to the specific terminal device.

Preferably, detecting the data traffic of the terminal device using a data service by accessing a specific network in a heterogeneous network to determine the type of application to be executed in the terminal device and provide a result of the determination to the policy related device. The apparatus may further include.

Terminal device according to a second aspect of the present invention for achieving the above object, a multi-communication unit for supporting communication for heterogeneous networks; And when the network change policy is received from the outside, determine whether access is possible in response to the corresponding network to be changed based on the network change policy, and if access is possible, attempt to access the corresponding network to be changed through the multi communication unit. And a connection control unit for changing a network to be connected.

Preferably, while using a data service by accessing a specific network in a heterogeneous network through the multi-communication unit, when a specific providing point is reached, an application executed in response to the use of the data service is recognized or data traffic according to the data service is detected. The apparatus may further include a determination information providing unit configured to determine a type of an application to be executed by analyzing and providing the determination result to the policy related device.

Preferably, the access control unit may provide the policy related apparatus with a result of performing a change in a network to be connected according to the network change policy.

The policy related apparatus according to the third aspect of the present invention for achieving the above object, the policy setting information storage unit for storing the predefined application-based policy setting information to induce a connection change to a specific network in response to the application type ; An information storage unit for storing device-related information including at least one of device information on a wireless relay device of a connected specific network provided from at least one terminal device and device information on a wireless relay device of a neighboring network; Recognizes an application executed in a terminal device, generates a network change policy corresponding to the recognized application based on application-based policy setting information in the policy setting information storage unit, and provides the network change policy to the specific terminal device. It includes a device control unit.

Preferably, the device controller is connected to a specific network in a heterogeneous network, the detection result of determining the type of the application or the application running in the detection device for providing a determination result of determining the type of the application executed in the terminal device using the data service Based on the determination result from the corresponding terminal device providing a, it is possible to recognize the application running in the terminal device.

Preferably, the device controller, based on the application-based policy setting information, the load status of the application type recognized in correspondence to the terminal device and at least one radio relay device belonging to the corresponding network in correspondence with each network. You can create a network change policy that reflects the load-related information for each network.

The heterogeneous network connection change method according to the fourth aspect of the present invention for achieving the above object comprises the steps of: a policy-related device for recognizing an application running on a specific terminal device; The policy related device generates a network change policy corresponding to the recognized application based on predefined application-based policy setting information in order to induce a connection change to a specific network in response to the recognized application type, and generates the specific terminal. Providing the network change policy to a device; And changing the network to which the terminal device accesses according to the received network change policy.

Preferably, a detection device that analyzes data traffic of the terminal device using a data service by accessing a specific network in a heterogeneous network and determines a type of an application executed in the terminal device sends the determination result to the policy related device. It may further comprise the step of providing.

According to a fifth aspect of the present invention, there is provided a method of operating a terminal device, the method including: accessing a specific network in a heterogeneous network; And when the network change policy is received from the outside, determine whether access is possible in response to the corresponding network to be changed based on the network change policy, and if access is possible, attempt to access the corresponding network to be changed through the multi communication unit. And a connection change step of changing a network to be connected.

Preferably, while accessing a specific network in the heterogeneous network and using a data service, when a specific providing point is reached, an application executed in response to the use of the data service is recognized or the data traffic according to the data service is analyzed. The method may further include a determining information providing step of determining a type of an application and providing a result of the determination to the policy related device.

Preferably, the method may further include providing, to the policy related device, a result of performing the change to change the access network according to the network change policy.

In accordance with a sixth aspect of the present invention, there is provided a method of operating a policy related device, wherein the policy setting stores predetermined application-based policy setting information for inducing a connection change to a specific network in response to an application type. Information storage step; A recognition step of recognizing an application executed in a specific terminal device; And generating a network change policy corresponding to the recognized application based on the previously stored application-based policy setting information, and providing a network change policy to the specific terminal device.

Preferably, the recognizing step, the determination result of determining the type of the application or the application running in the detection device that provides a determination result of determining the type of the application executed in the terminal device using the data service by accessing a specific network in the heterogeneous network Based on the determination result from the corresponding terminal device providing a, it is possible to recognize the application running in the terminal device.

Preferably, the policy providing step, based on the application-based policy setting information, the load status for at least one radio relay device belonging to the corresponding network corresponding to each network and the application type recognized corresponding to the terminal device; Network change policy can be created to reflect the load-related information for each network.

Accordingly, according to the heterogeneous network connection change system and method of the present invention, a type of application executed in response to a terminal device using a data service in a heterogeneous network environment is recognized, and a network change policy based on the same is given to the terminal device. Accordingly, by inducing the terminal device to change the access network, the network operator may lead the network to effectively transfer data traffic to improve data service quality and secure network stability.

1 is a block diagram showing a heterogeneous network connection change system according to a preferred embodiment of the present invention.
2 is a block diagram of a terminal device according to a preferred embodiment of the present invention.
3 is a block diagram of a policy related device according to a preferred embodiment of the present invention.
4 is a flowchart illustrating an operation flow of a heterogeneous network connection change method according to a preferred embodiment of the present invention.
5 is a flowchart illustrating a method of operating a terminal device according to an exemplary embodiment of the present invention.
6 is a flowchart illustrating a method of operating a policy related device according to a preferred embodiment of the present invention.

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

1 is a view showing a heterogeneous network connection change system according to a preferred embodiment of the present invention.

As shown in FIG. 1, a heterogeneous network connection change system according to the present invention includes a terminal device 100 for changing a network to be connected according to a received network change policy, and an application executed in a specific terminal device 100. To generate a network change policy corresponding to the recognized application on the basis of predefined application-based policy setting information in order to induce a connection change to a specific network in response to the application type, and to the specific terminal device 100. And a policy related device 200 for providing the network change policy.

The terminal device 100 is a terminal that supports multi-communication for the heterogeneous network 10 including various types of networks.

That is, the terminal device 100 supports the multi-mode connection of the heterogeneous network 10 so that the terminal device 100 can utilize the heterogeneous network 10 described above. The base station (AP) information of the network can be obtained. In addition, it is assumed that the terminal device 100 has a control authority for multi-communication (110 of FIG. 2 to be described later) that can access the heterogeneous network 10 without a user's input.

Here, the heterogeneous network 10 refers to all or part of a wireless network that a terminal device can access through interworking of N / W serviced by each service provider or owned by a plurality of service providers. For example, WCDMA (1), the CDMA (2), WLAN (3) (for example, WiFi), WiBro (4), LTE (5), etc. may be the interworking environment.

In addition, although not shown in FIG. 1, each network included in the heterogeneous network 10 includes wireless relay devices belonging to itself. For example, the WCDMA 1 includes base station devices belonging to the WLAN. Naturally, (3) has access points (AP) belonging to it.

The terminal device 100 may access a specific network through a wireless relay device (eg, base station device) of a specific network (eg, WCDMA (1)) and use the data service through the specific network.

In this case, when the network change policy is received from the outside, in particular, from the policy related device 200, the terminal device 100 connects to the corresponding network (eg, WLAN 3) to be changed according to the received network change policy. It is determined whether or not it is possible, and if the connection is possible, the network to be connected is changed from WCDMA 1 to WLAN 3.

Further, the terminal device 100 recognizes the application executed in the self in response to the current data service use or analyzes the data traffic according to the current data service by itself to determine the type of the executed application. The determination result indicating the type of the running application may be provided to the policy related device 200.

The policy related device 200 recognizes an application executed in a specific terminal device 100, generates a network change policy corresponding to the currently recognized application based on predefined application-based policy setting information, and corresponds to the specific terminal. To the device 100.

Here, the heterogeneous manganese connection change system according to the present invention may further include a detection device 300 as shown in FIG.

The detection apparatus 300 analyzes data traffic of the terminal apparatus 100 using a data service by accessing a specific network in the heterogeneous network 10, and determines a type of an application executed in the terminal apparatus 100 and accordingly The determination result, that is, the determination result indicating the type of application is provided to the policy related device 200.

Specifically, the detection apparatus 300 corresponds to the terminal apparatus 100 that uses a data service by connecting to a specific network (eg, WCDMA 1) in the heterogeneous network 10, so that the terminal apparatus 100 is a gateway apparatus. For example, the type of the application running in the terminal device 100 may be determined by analyzing data traffic transmitted to the packet data network gateway.

At this time, the detection device 300 is connected to the heterogeneous network 10 to analyze the data traffic continuously or every specific analysis period corresponding to all the terminal devices using the data service to provide the decision result to the policy related device 200. Alternatively, the data traffic may be analyzed in response to a specific terminal device to start using the data service or perform handover, and provide the decision result to the policy related device 200.

The detection device 300 may be a component included / retained in a gateway device (eg, a packet data network gateway) or may be provided separately from the gateway device.

Accordingly, the policy related device 200 recognizes an application executed in the terminal device 100 based on the determination result provided from the detection device 300, and is recognized this time based on the predefined application-based policy setting information. A network change policy corresponding to an application may be generated and provided to the corresponding terminal device 100.

Meanwhile, when the terminal device 100 provides the determination result as described above, the policy related device 200 is executed in the corresponding terminal device 100 based on the determination result provided from each terminal device 100. The application may be recognized, and a network change policy corresponding to the currently recognized application may be generated based on the application-based policy setting information and provided to the corresponding terminal device 100.

At this time, the policy related device 200, in providing the generated network change policy to the corresponding terminal device 100, according to a predefined communication standard such as Access Network Discovery and Selection Function (ANDSF) or MIH (Media Independent Handover) Accordingly, it is desirable to provide a network change policy to the terminal device 100.

Hereinafter, a detailed configuration of the terminal device 100 according to the present invention will be described with reference to FIG. 2.

The terminal device 100 according to the present invention corresponds to a multi-communication unit 110 supporting communication for the heterogeneous network 10 and a corresponding network to be changed based on the network change policy when a network change policy is received from the outside. It determines whether the connection is possible, and if the connection is possible through the multi-communication unit 110 includes a connection control unit 130 for attempting to connect to the corresponding network to change the access network.

The multi communication unit 110 supports multi-communication for the heterogeneous network 10 including various types of networks.

That is, the multi communication unit 110 is connected to the first communication module supporting the connection to the WCDMA 1 and the use of the communication service, the second communication module supporting the connection to the CDMA 2 and the use of the communication service, and the WLAN 3. A third communication module for supporting the connection and the use of the communication service, a fourth communication module for the connection to the WiBro (4) and the use of the communication service, and a plurality of communication modules such as the connection to the LTE (5) and the use of the communication service It may include.

Accordingly, the terminal device 100 may selectively access various networks in the heterogeneous network 10 through the multi communication unit 110 to use data services.

In this case, the terminal device 100 may include device-related information including at least one of device information on a wireless relay device of a specific network connected through the multi communication unit 110 and device information on a wireless relay device of a neighboring network. The external policy related device 200 may be provided.

For example, the terminal device 100 may use the data service by accessing the WCDMA 1 through a connection with a base station device in a specific network (eg, WCDMA 1) through the multi communication unit 110.

As such, when connected to a specific network, a specific functional unit (not shown) in the terminal apparatus 100 may transmit device information about a wireless relay apparatus of a currently connected specific network (for example, WCDMA (1)), that is, a connected base station apparatus. Example: base station ID, location information, etc.) and at least any one of device information (eg, AP ID, location information, etc.) for an access point (AP) belonging to a WLAN 3 located nearby. The device related information including one may be provided to the policy related device 200.

Meanwhile, the terminal device 100 according to the present invention may further include a determination information providing unit 120 as shown in FIG. 2.

The determination information providing unit 120 accesses a specific network (eg, WCDMA (1)) in the heterogeneous network 10 through the multi communication unit 110 to use a data service. Recognizing an application executed in response to the use or analyzing the data traffic according to the current data service, the type of the application currently executed is determined and the determination result is provided to the policy related device 200.

That is, the decision information providing unit 120 is currently executing when a specific providing point is reached while using a data service by accessing a specific network (eg, WCDMA 1) in the heterogeneous network 10 through the multi communication unit 110. If the applied application corresponds to the type included in the previously stored application list information, the determination result indicating the application type being executed is provided to the policy related device 200, or data transmitted through the multi-communication unit 110 when a specific providing point is reached. The traffic may be analyzed to provide a decision result indicating the type of application being executed to the policy related device 200 according to the analysis result.

In this case, the specific point of time is continuously connected to a specific network (eg, WCDMA (1)) in the heterogeneous network 10 through the multi-communication unit 110 to start using the data service, or during the time of using the data service. This may correspond to a time point at which a handover is to be performed, or at a specific analysis cycle or as a predefined handover execution situation occurs.

Thus, as described above, the policy related device 200 is provided with a determination result regarding an application type being executed from various terminal devices including the terminal device 100.

The access controller 130 changes the network connected through the multi communication unit 110 according to the network change policy received from the outside, in particular, the policy related device 200.

That is, when the network change policy is received from the policy related device 200, the access controller 130 may perform an access network change process based on the network change policy received from the policy related device 200.

In more detail, when the connection controller 130 is described, when the network change policy is received from the policy related device 200, the connection controller 130 determines whether access is possible in response to the corresponding network to be changed based on the network change policy. In addition, when access is possible, the access network may be changed by attempting to access the corresponding network through the multi communication unit 110.

That is, when the network change policy is received from the policy related device 200, the access controller 130 recognizes the corresponding network (eg, WLAN 3) to change based on the received network change policy, and recognizes the WLAN 3. The function of the multi-communication unit 110 for accessing the network and using the data service, that is, by activating the above-described third communication module, determines whether the connection to the corresponding network (eg, WLAN 3) is possible.

In this case, the network change policy received from the policy related device 200 may include heterogeneous network access change allowance and restriction information, optimal network type information, optimal network selection and change priority determination information, and the like.

Therefore, if it is determined that a connection to a network (for example, WLAN 3) is possible, the connection controller 130 is changed through the multi communication unit 110 activated for connection to the WLAN 3 and use of data service. By attempting to connect to the network (e.g., WLAN (3)) to be connected, and further terminate the connection state to the network (e.g., WCDMA (1)) that is being connected, change the access network according to the received network change policy. The process can be performed.

Of course, if it is determined that the connection to the network (for example, WLAN (3)) is impossible, the access controller 130 may not perform the process of changing the access network according to the received network change policy.

In this case, the network change process may include all or part of an existing handover process for changing the access from another network to another network. The above handover process may be performed by a terminal supporting handover between existing heterogeneous networks. Since this corresponds to a general process performed based on the description, a detailed description thereof will be omitted.

In addition, the connection controller 130 may provide the policy related device 200 with a result of performing a change in a network to be connected according to the network change policy.

For example, when the connection controller 130 changes the connection from the network (for example, WCDMA (1)) to the network (for example, WLAN (3)) connected according to the network change policy, the corresponding change result is performed. May be provided to the policy related device (200).

In addition, the connection controller 130 does not change the network connection according to the network change policy due to an error or the like that is determined to be impossible to connect to the network (for example, the WLAN 3) as described above, or an error occurred during the connection change process. If not, the change execution result corresponding thereto may be provided to the policy related device 200.

Hereinafter, the policy related device 200 according to the present invention will be described in detail with reference to FIG. 3.

The policy related apparatus 200 according to the present invention includes a policy setting information storage unit 210 for storing predefined application-based policy setting information for inducing a connection change to a specific network according to an application type, and a specific terminal. Recognizes the application running in the device 100, generates a network change policy corresponding to the recognized application based on the application-based policy setting information in the policy setting information storage unit 210, to a specific terminal device 100 Device control unit 230 for providing a network change policy.

The policy setting information storage unit 210 may define various predefined network change policies and specific networks for inducing a terminal device to change a connection to an optimal network in response to the type of application currently running in a heterogeneous network 10 environment. Application-based policy setting information including policy decision information on which the change policy is generated / determined may be stored.

Furthermore, the policy related device 200 according to the present invention may further include an information storage unit 220.

The information storage unit 220 stores device related information provided from each terminal device 100. That is, the information storage unit 220 may include at least one of device information on the wireless relay device of the connected specific network provided from the at least one terminal device 100 and device information on the wireless relay device of the neighboring network. Device-related information can be stored and managed.

Accordingly, in the policy related device 200, corresponding to each terminal device 100, the terminal device 100 is connected to a wireless relay device of a specific network (for example, WCDMA (1)) to which the terminal device 100 is currently connected. Device information (e.g., base station ID, location information, etc.) and device information (e.g., access point (AP) belonging to WLAN 3 located nearby) It is possible to manage device related information including at least one of AP ID, location information, etc.).

The device controller 230 recognizes an application executed in the terminal device 100, and generates a network change policy corresponding to the recognized application based on the application-based policy setting information in the policy setting information storage unit 210. The network change policy is provided to the corresponding terminal device 100.

In more detail, the device controller 230 recognizes an application executed in the specific terminal device 100.

In this case, the device controller 230 connects to a specific network in the heterogeneous network 10 and connects to the terminal device through interworking with the detection device 300 that provides a determination result of determining the type of application executed in the terminal device using the data service. It can be recognized that the application running in 100).

That is, the result of the determination from the detection apparatus 300 that analyzes the data traffic of the terminal apparatus 100 to determine the type of the application executed in the terminal apparatus 100, that is, the type of the application executed in the terminal apparatus 100. Based on the determination result, the device controller 230 may recognize an application executed in the corresponding terminal device.

Meanwhile, the device controller 230 may recognize an application executed in the terminal device 100 based on the determination result from the terminal device 100 that provides a determination result of determining the type of the application executed in the device control unit 230. Can be.

That is, the device controller 230 may receive the determination result of the type of application being executed from each terminal device 100 as described above, and recognize the application executed in the corresponding terminal device based on the determination result.

As such, when the type of the application executed in the corresponding terminal device 100 is recognized based on the determination result provided from the detection device 300 or each terminal device 100, the device controller 230 may apply the application-based policy setting information. On the basis of this, a network change policy corresponding to the recognized application type is generated and provided to the corresponding terminal device 100.

In this case, the type of the recognized application may vary according to the type information set at the time of authoring the application-based policy setting information. An example of the type of the application may include various types of traffic, such as large-capacity traffic above a specific threshold, real-time streaming traffic, and bidirectional communication traffic. It may include.

Accordingly, the application-based policy setting information may include, for example, WCDMA included in the heterogeneous network 10 in correspondence with each type and combination of various types of applications such as high-volume traffic, real-time streaming traffic, and bidirectional communication traffic having a specific reference value or more. (1), information that is set in advance so as to change the connection to an optimal network among networks such as CDMA (2), WLAN (3) (e.g. WiFi), WiBro (4), LTE (5), etc. May contain information.

For example, as a result of recognizing the type of application to be executed in the terminal apparatus 100 in response to the terminal apparatus 100 using the data service by accessing the WCDMA 1, the terminal apparatus 100 generates a large amount of traffic ( For example, if it is determined that a VoD service is being executed, the device controller 230 determines an optimal network (eg, WLAN 3) corresponding to the application of the currently recognized large traffic based on the application-based policy setting information. And a network change policy that induces the terminal device to change the access network.

Therefore, the device controller 230 provides the network change policy generated this time to the terminal device 100.

Accordingly, the terminal device 100 determines whether the connection is possible in response to the corresponding network (for example, WLAN 3) to be changed according to the network change policy received from the policy related device 200, as described above. If the connection is available, the connecting network will be changed from WCDMA 1 to WLAN 3.

Furthermore, the device controller 230 may load the network related load information, that is, each network of the heterogeneous network 10, provided from the load state monitoring device (not shown) through interworking with a separately configured load state monitoring device (not shown). Correspondingly, load related information for each network monitoring the load state of the wireless relay devices belonging to the corresponding network may be stored in the information storage unit 220. Alternatively, the device controller 230 monitors a load state of wireless relay devices belonging to the corresponding network corresponding to each network of the heterogeneous network 10 by itself without interworking with a separate load state monitoring device (not shown). Load-related information for each network corresponding to the monitoring result may be stored in the information storage unit 220.

Accordingly, as in the above-described example, as a result of recognizing the type of application executed in the terminal device 100 in response to the terminal device 100 using the data service by accessing the WCDMA 1, the terminal device 100 generates a large amount of traffic. If it is determined that the application (eg, VoD service) of the application is running, the device controller 230 reflects the application of the currently recognized mass traffic based on the application-based policy setting information and the load-related information for each network. A network change policy may be generated / determined to determine an optimal network (eg, WLAN 3) to induce the terminal device to change the access network, and the network change policy may be provided to the terminal device 100. .

As described above, the heterogeneous network connection change system according to the present invention recognizes the type of application to be executed corresponding to a terminal device using a data service in a heterogeneous network environment, and lowers the network change policy based on the application to the terminal device. Therefore, by inducing the terminal device to change the access network accordingly, it can be driven by the network operating side to effectively transfer the data traffic to improve the data service quality and ensure network stability.

Hereinafter, a heterogeneous network connection change method according to a preferred embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, for convenience of description, the components shown in FIGS. 1 to 3 will be described with reference to corresponding reference numerals.

First, a heterogeneous network connection change method according to a preferred embodiment of the present invention will be described with reference to FIG. 4.

The terminal device 100 uses a data service by accessing a network (eg, WCDMA) through a connection with a wireless relay device (eg, a base station device) of a specific network (eg, WCDMA) of the heterogeneous network 10 (S10).

Meanwhile, the policy related device 200 receives the determination result indicating the type of application being executed in response to the specific terminal device 100 using the data service by accessing the heterogeneous network 10 (S20), and based on the received terminal The type of application being executed in the device 100 is recognized (S30).

In addition, the policy related device 200 generates a network change policy corresponding to the recognized application based on the predefined application-based policy setting information to induce a connection change to a specific network in response to the recognized application type. In operation S50, a network change policy is provided to a specific terminal device 100 (S50).

Accordingly, the terminal device 100 that receives the network change policy from the outside, in particular, from the policy related device 200 changes the network to be connected according to the received network change policy (S60), thereby providing an example of the network according to the network change policy. For example, the WLAN 3 can be connected (S70).

Hereinafter, a method of operating the terminal device according to the present invention will be described in more detail with reference to FIG. 5.

In the operation method of the terminal apparatus 100 according to the present invention, a data service can be used by accessing a WCDMA 1 through a connection with a base station apparatus in a specific network (for example, WCDMA 1) among heterogeneous networks 10. There is (S100).

As such, when connected to a specific network, the operation method of the terminal apparatus 100 according to the present invention may include device information on a wireless relay device of a specific network (for example, WCDMA (1)), that is, a connected base station apparatus (for example, WCDMA 1). At least one of device information (eg, AP ID, location information, etc.) for an access point (AP) belonging to a WLAN (3) located nearby. Device-related information including a may be provided to the policy related device 200 (S110).

On the other hand, the operation method of the terminal device 100 according to the present invention, while accessing a specific network (eg, WCDMA (1)) in the heterogeneous network 10 to use the data service, the current data service when a specific point of delivery is reached The application executed in response to the use may be recognized or the data traffic according to the current data service may be analyzed to determine the type of the currently executed application, and the determination result may be provided to the policy related device 200 (S120). ).

That is, the operation method of the terminal apparatus 100 according to the present invention is an application currently executed when a specific provision time is reached while accessing a specific network (eg, WCDMA (1)) in a heterogeneous network 10 to use a data service. If it corresponds to the type included in the stored application list information, the decision result indicating the type of application being executed is provided to the policy related device 200, or when the specific delivery point is reached, the data traffic transmitted to the outside is analyzed and analyzed. Accordingly, the determination result indicating the type of application being executed may be provided to the policy related device 200.

In this case, the specific providing time is continuously connected to a specific network (eg, WCDMA (1)) in the heterogeneous network 10 to start using the data service or during a using time using the data service. Alternatively, this may correspond to a point in which a handover is to be performed at a specific analysis cycle or as a predefined handover execution situation occurs.

Thus, as described above, the policy related device 200 is provided with a determination result regarding an application type being executed from various terminal devices including the terminal device 100.

In addition, in the method of operating the terminal device 100 according to the present invention, when a network change policy is received from the outside, in particular, the policy related device 200, the access network change process is performed based on the network change policy received from the policy related device 200. Will perform.

More specifically, the operation method of the terminal device 100 according to the present invention determines whether a network change policy is received from the policy related device 200 (S130), and when the network change policy is received, the received network The access network change process is performed based on the change policy (S140).

That is, in the operation method of the terminal device 100 according to the present invention, when a network change policy is received from the policy related device 200, a corresponding network (for example, WLAN 3) to be changed based on the received network change policy is received. It recognizes whether the connection to the network (for example, WLAN (3)) is possible by activating the function of the multi-communication unit 110 for access to the WLAN (3) and the use of communication services.

In this case, the network change policy received from the policy related device 200 may include heterogeneous network access change allowance and restriction information, optimal network type information, optimal network selection and change priority determination information, and the like.

Therefore, when it is determined that the connection to the network (for example, WLAN (3)) is possible, the operation method of the terminal device 100 according to the present invention, the multi-activated for the connection to the WLAN (3) and the use of communication services A network is received by attempting to connect to a corresponding network (for example, WLAN (3)) to be changed through the communication unit 110, and further terminating the connection state to the network (for example, WCDMA (1)) being connected. The access network change process according to the change policy can be performed.

Of course, if it is determined that the connection to the network (for example, WLAN (3)) is impossible, the operation method of the terminal device 100 according to the present invention may not perform the access network change process according to the received network change policy. have.

On the other hand, in the operation method of the terminal device 100 according to the present invention, if the network change policy is not received in step S130 maintains the connection state for the currently connected network (for example, WCDMA (1)) (S135).

Further, the operation method of the terminal device 100 according to the present invention may provide the policy related device 200 with a result of performing a change of a network to be connected according to a network change policy (S150).

For example, the operation method of the terminal device 100 according to the present invention may include a case in which a connection is changed from a network (for example, WCDMA (1)) to a network (for example, WLAN (3)) in connection with a network change policy. In response thereto, the result of performing the change corresponding thereto may be provided to the policy related device 200.

In addition, in the method of operating the terminal device 100 according to the present invention, as described above, it is determined that the connection to the network (for example, the WLAN (3)) is impossible or the network change policy due to an error generated during the connection change process. If the network connection is not changed according to the present invention, the result of the change corresponding thereto may be provided to the policy related device 200.

Hereinafter, an operation method of the policy related device 200 according to the present invention will be described in more detail with reference to FIG. 6.

The operation method of the policy related device 200 according to the present invention stores the predefined application-based policy setting information (S200).

Here, the application-based policy setting information includes various predefined network change policies and specific network changes for inducing the terminal device to change the connection to the optimal network in response to the application type currently running in the heterogeneous network 10 environment. It may include policy decision information on which the policy is created / determined.

That is, the application-based policy setting information may include, for example, WCDMA included in the heterogeneous network 10 in correspondence with each type and combination of various types of applications, such as large-capacity traffic over a specific threshold, real-time streaming traffic, and bidirectional communication traffic. (1), information that is set in advance so as to change the connection to an optimal network among networks such as CDMA (2), WLAN (3) (e.g. WiFi), WiBro (4), LTE (5), etc. May contain information.

In addition, the method for operating the policy related device 200 according to the present invention stores / manages device related information provided from the terminal device (S210).

That is, the operation method of the policy related device 200 according to the present invention, the device information for the wireless relay device of the connected specific network provided from the at least one terminal device 100 and the device for the wireless relay device of the peripheral network Store / manage device related information including at least one of the information.

Accordingly, the method for operating the policy related device 200 according to the present invention corresponds to each terminal device 100, and wireless relay of a specific network (eg, WCDMA 1) to which the terminal device 100 is currently connected. Device information (e.g., base station ID, location information, etc.) for the connected base station device, and an access point (AP) belonging to a wireless network relay device of the corresponding terminal device 100, for example, belonging to a WLAN 3 located nearby. It is possible to manage device related information including at least any one of device information (eg, AP ID, location information, etc.).

In addition, the operation method of the policy related device 200 according to the present invention recognizes an application executed in the terminal device 100.

Specifically, the operation method of the policy related device 200 according to the present invention, the detection device for providing a determination result of determining the type of application to be executed in the terminal device using a data service by connecting to a specific network in the heterogeneous network 10 In operation S220, a determination result may be received from the detection apparatus 300 through interworking with the operation 300, and based on this, the application executed in the terminal apparatus 100 may be recognized.

That is, the result of the determination from the detection apparatus 300 that analyzes the data traffic of the terminal apparatus 100 to determine the type of the application executed in the terminal apparatus 100, that is, the type of the application executed in the terminal apparatus 100. Based on the determination result, the operation method of the policy related device 200 according to the present invention may recognize an application executed in the corresponding terminal device.

On the other hand, the operation method of the policy related device 200 according to the present invention, and receives the determination result from the terminal device 100 that provides a determination result of determining the type of the application executed in the self (S220), based on this An application running in the terminal device 100 may be recognized.

That is, the operation method of the policy related device 200 according to the present invention, as described above, receives the determination result for the type of application running from each terminal device 100 to recognize the application running on the terminal device based on this. It may be.

As such, when the type of the application executed in the corresponding terminal device 100 is recognized based on the determination result provided from the detection device 300 or each terminal device 100, an operation method of the policy related device 200 according to the present invention. Generates a network change policy corresponding to the currently recognized application type based on the application-based policy setting information (S230), and provides the same to the terminal device 100 (S240).

In this case, the type of the recognized application may vary according to the type information set at the time of authoring the application-based policy setting information. An example of the type of the application may include various types of traffic, such as large-capacity traffic above a specific threshold, real-time streaming traffic, and bidirectional communication traffic. It may include.

For example, as a result of recognizing the type of application to be executed in the terminal apparatus 100 in response to the terminal apparatus 100 using the data service by accessing the WCDMA 1, the terminal apparatus 100 generates a large amount of traffic ( For example, if it is determined that the VoD service is being executed, the operation method of the policy related device 200 according to the present invention is based on the application-based policy setting information. Determine the WLAN 3) and create / determine a network change policy that induces the terminal device to change the access network.

Accordingly, the method for operating the policy related device 200 according to the present invention provides the terminal device 100 with the network change policy generated this time.

Accordingly, the terminal device 100 determines whether the connection is possible in response to the corresponding network (for example, WLAN 3) to be changed according to the network change policy received from the policy related device 200, as described above. If the connection is available, the connecting network will be changed from WCDMA 1 to WLAN 3.

Further, the operation method of the policy related device 200 according to the present invention, the load-related information for each network provided from the load state monitoring device (not shown) through interlocking with the load state monitoring device (not shown) configured separately, that is, Corresponding to each network of the heterogeneous network 10, load-related information for each network may be stored / managed by monitoring a load state of wireless relay devices belonging to the corresponding network.

Alternatively, the operation method of the policy related device 200 according to the present invention is a wireless relay device belonging to the corresponding network corresponding to each network of the heterogeneous network 10 itself without interworking with a separate load state monitoring device (not shown). By monitoring the load status of the network, the load related information of each network corresponding to the monitoring result can be saved / managed.

Accordingly, as in the above-described example, as a result of recognizing the type of application executed in the terminal device 100 in response to the terminal device 100 using the data service by accessing the WCDMA 1, the terminal device 100 generates a large amount of traffic. If it is determined that the application (eg, VoD service) is running, the operation method of the policy related device 200 according to the present invention, the application of the large-volume traffic recognized on the basis of the application-based policy setting information in step S230 and It is possible to generate / determine network change policy that induces the terminal device to change the access network by determining the optimal network (for example, WLAN (3)) corresponding to the load-related information for each network. It may be provided to the terminal device 100 through the step S240.

As described above, the heterogeneous network connection change method according to the present invention recognizes the type of application to be executed corresponding to a terminal device using a data service in a heterogeneous network environment, and lowers the network change policy based on the same to the terminal device. Therefore, by inducing the terminal device to change the access network accordingly, it can be driven by the network operating side to effectively transfer the data traffic to improve the data service quality and ensure network stability.

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

Heterogeneous network access that recognizes the type of application to be executed in response to a terminal device using a data service in a heterogeneous network environment and issues a network change policy based on the terminal device to the terminal device, thereby inducing the terminal device to change the access network. The application of a modified system and method can bring about great results in terms of network operation improvement and stability, traffic operation efficiency, and user satisfaction. Not only is there enough possibility, but it is practically evident.

10: heterogeneous network
100: terminal device
200: policy related devices
300 detection device

Claims (16)

A terminal device for changing a connected network according to a received network change policy; And
In order to recognize an application running in a specific terminal device and to induce a connection change to a specific network in response to an application type, a network change policy corresponding to the recognized application is generated based on predefined application-based policy setting information. And a policy related device for providing the network change policy to the specific terminal device. The method of claim 1,
It further includes a detection device for accessing a specific network in a heterogeneous network to analyze the data traffic of the terminal device using the data service to determine the type of application to be executed in the terminal device and provide the determination result to the policy related device Heterogeneous manganese connection change system, characterized in that. A multi communication unit supporting communication for heterogeneous networks; And
When the network change policy is received from the outside, it is determined whether the connection is possible in correspondence with the corresponding network to be changed based on the network change policy, and if the connection is possible, attempts to access the corresponding network to be changed through the multi communication unit. And a connection controller for changing a network to be connected. The method of claim 3, wherein
While using a data service by accessing a specific network in a heterogeneous network through the multi-communication unit, when a specific providing point is reached, an application executed in response to the use of the data service is recognized or the data traffic according to the data service is analyzed. And a determination information provider for determining the type of application and providing the determination result to the policy related device. The method according to claim 3 or 4,
The connection control unit,
And a change performing result of changing the access network according to the network change policy to the policy related device. A policy setting information storage unit for storing predefined application-based policy setting information for inducing a connection change to a specific network according to an application type;
An information storage unit for storing device-related information including at least one of device information on a wireless relay device of a connected specific network provided from at least one terminal device and device information on a wireless relay device of a neighboring network; and
Recognize an application executed in a specific terminal device, generate a network change policy corresponding to the recognized application based on application-based policy setting information in the policy setting information storage unit, and apply the network change policy to the specific terminal device. Policy-related device comprising a device control unit for providing. The method according to claim 6,
The device control unit,
Determination from a detection device that provides a determination result of determining a type of an application executed in a terminal device using a data service by accessing a specific network in a heterogeneous network or a determination from a corresponding terminal device providing a determination result of determining the type of an application executed in the own network Based on the result, the policy related device characterized in that it recognizes the application running in the terminal device. The method of claim 7, wherein
The device control unit,
On the basis of the application-based policy setting information, reflects the load-related information for each network indicating the load status of at least one radio relay device belonging to the network corresponding to the application type and the network recognized in response to the terminal device; Policy-related device, characterized in that for generating a network change policy. Recognizing, by the policy related device, an application executed in a specific terminal device;
The policy related device generates a network change policy corresponding to the recognized application based on predefined application-based policy setting information in order to induce a connection change to a specific network in response to the recognized application type, and generates the specific terminal. Providing the network change policy to a device; And
And changing the network to which the terminal device accesses according to the received network change policy. The method of claim 9,
A step of detecting a type of an application executed in the terminal apparatus by analyzing data traffic of the terminal apparatus using a data service by accessing a specific network in a heterogeneous network, and providing the determination result to the policy related apparatus. Heterogeneous manganese connection change system further comprising. Accessing a particular network within the heterogeneous network; And
When the network change policy is received from the outside, it is determined whether the connection is possible in correspondence with the corresponding network to be changed based on the network change policy, and if the connection is possible, attempts to access the corresponding network to be changed through the multi communication unit. And a connection change step of changing a network to be connected. The method of claim 11,
Recognizing an application executed in response to the use of the data service or accessing a specific network in the heterogeneous network using a data service or analyzing the data traffic according to the data service when a specific providing time is reached And determining and providing the determination result to the policy related device. The method according to claim 11 or 12,
And providing a change performing result of changing the access network according to the network change policy to the policy related device. A policy setting information storing step of storing predefined application-based policy setting information for inducing a connection change to a specific network in response to an application type;
A recognition step of recognizing an application executed in a specific terminal device; And
And a policy providing step of generating a network change policy corresponding to the recognized application based on the previously stored application-based policy setting information, and providing the network change policy to the specific terminal device. Method of operation. 15. The method of claim 14,
The recognition step,
Determination from a detection device that provides a determination result of determining a type of an application executed in a terminal device using a data service by accessing a specific network in a heterogeneous network or a determination from a corresponding terminal device providing a determination result of determining the type of an application executed in the own network Based on the result, the method for operating a policy related device, characterized in that for recognizing the application running in the terminal device. The method of claim 15,
The policy providing step,
On the basis of the application-based policy setting information, reflects the load-related information for each network indicating the load status of at least one radio relay device belonging to the network corresponding to the application type and the network recognized in response to the terminal device; Method for operating a policy-related device, characterized in that for generating a network change policy.

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