KR101401324B1 - System and method for changing access in heterogeneous networks - Google Patents

Abstract

The present invention monitors a load state of a wireless relay device such as a base station and an access point (AP) belonging to each network in a heterogeneous network environment and provides a network change policy based on the load state to the corresponding terminal device, Discloses a heterogeneous network access change system and method capable of efficiently transferring data traffic and securing network stability by inducing a user to change the access network network. The heterogeneous network connection changing system of the present invention monitors a load state of a wireless relay apparatus belonging to at least one network, and when a load state of a specific wireless relay apparatus corresponds to a predetermined change state, Based on the predefined load-based policy setting information corresponding to the wireless relay apparatus, provides the network change policy to the corresponding terminal apparatus, and transmits the network change policy to the corresponding network apparatus And the like.

Description

[0001] SYSTEM AND METHOD FOR CHANGING ACCESS IN HETEROGENEOUS NETWORKS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system and method for changing a connection between heterogeneous networks, and more particularly, to a system and method for changing a heterogeneous network connection between a base station and an access point (AP) A heterogeneous network access change system capable of effectively leading data traffic and leading to network stability by guiding the terminal apparatus to change the access network by lowering the network change policy to the corresponding terminal apparatus, A method of operating a terminal device and a terminal device, and a method of operating a policy related device and a policy related device.

Recently, operators often provide services based on multiple wireless technologies at the same time. In Korea, major operators are deploying WCDMA, CDMA, WiBro, and WLAN (WiFi) technology, which is the nearest wireless network, to build and service network. LTE networks will likely be introduced in the next few years.

In this way, in a heterogeneous network environment where a plurality of network networks are mixed, a current method of using a data service through a terminal device is a method in which a controllability of a provider is excluded by an access network selection method by directly changing a terminal device user, It is a passive way when considering the position.

Meanwhile, as a variety of wireless devices such as smart phones and tablet PCs are increasing in number and data rates are becoming cheaper, and at the same time, a variety of large-capacity data services are increasing, the network load ratio of operators is rapidly increasing, This is a threat in terms of stability.

Accordingly, there is a need for a method of inducing operators to change the access network of a terminal device actively according to the state of a network in a heterogeneous network environment where a plurality of network networks are mixed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a wireless relay apparatus that monitors a load state of a wireless relay apparatus belonging to at least one network, , The policy related device generates a network change policy in accordance with the load based policy setting information previously defined corresponding to the specific wireless relay device and provides the network change policy to the corresponding terminal device, The present invention provides a heterogeneous network connection changing system and method for changing a network network to be connected according to a received network change policy. In a heterogeneous network environment, a load state of a wireless relay apparatus such as a base station and an access point (AP) The network change policy based on this is sent to the corresponding terminal device, Thereby inducing the device to change the access network.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a radio network controller that connects to a specific network, Related device including at least one of the device information of the device and the device information of the device is provided to the external policy related device and the terminal device that changes the network to be accessed according to the network change policy received from outside, An operation method is provided to support an environment in which an access network can be effectively changed based on a load state of a wireless relay apparatus.

Another object to be achieved by the present invention is to store predefined load-based policy setting information and to monitor the load status of a wireless relay device belonging to at least one network, Determines whether or not the load status of the specific radio relay apparatus corresponds to the predetermined change status, and when it is determined that the load status of the specific radio relay apparatus corresponds to the preset change status, Related apparatus and policy-related apparatus for generating a network change policy according to the load-based policy setting information and providing the network change policy to a corresponding terminal apparatus, It monitors the load status of a wireless relay device such as a base station and an access point (AP) The network change policy is issued to the corresponding terminal device, thereby guiding the terminal device to change the access network network.

To achieve the above object, according to a first aspect of the present invention, there is provided a heterogeneous network connection changing system comprising: a terminal apparatus for changing a network to be connected according to a received network changing policy; And monitoring a load state of a wireless relay device belonging to at least one network, and when a load state of the specific wireless relay device corresponds to a preset change state, And a policy related device for generating a network change policy according to the information and providing the network change policy to the corresponding terminal device.

According to a second aspect of the present invention, there is provided a terminal device comprising: a multi-communication unit for supporting communication with a heterogeneous network; Related information including at least one of device information of a wireless relay device of a specific network connected through the multi-communication unit and device information of a wireless relay device of a peripheral network, study; And a connection control unit for changing a network network connected through the multi-communication unit according to a network change policy received from the outside.

Preferably, the connection control unit determines whether or not the connection is possible in response to the corresponding network network to be changed based on the network change policy, and when the connection is possible, connection to the corresponding network network to change through the multi- . ≪ / RTI >

Preferably, the connection control unit may provide a policy-related device with a result of performing a change to change a network to be connected according to the network change policy.

According to a third aspect of the present invention, there is provided a policy-related device including: a policy setting information storage unit for storing predefined load-based policy setting information; And monitoring a load state of a wireless relay device belonging to at least one network, and when a load state of the specific wireless relay device corresponds to a preset change state, And a device controller for generating a network change policy according to the information and providing the network change policy to the corresponding terminal device.

Preferably, the device control unit monitors the load status of at least one wireless relay device belonging to the corresponding network network in correspondence with each network network, and monitors the device information of the at least one wireless relay device and the monitored corresponding load status Based on the load-related information provided for each network network, in cooperation with the load-state monitoring apparatus that provides the load-related information including the load- have.

Preferably, the control unit monitors the load status of at least one wireless relay apparatus belonging to the corresponding network network corresponding to each network network, and monitors the load status of the at least one wireless relay apparatus And a load condition monitoring unit for providing information to the device control unit.

Preferably, the device-related information includes at least one of device information of a wireless relay device of a connected specific network network and device information of a wireless relay device of a peripheral network provided from at least one terminal device And may further include an information storage unit.

Preferably, when the load status of the specific radio relay apparatus corresponds to a predetermined change status, the apparatus control unit generates a network change policy based on the load-based policy setting information reflecting the load status of the specific radio relay apparatus And may provide the network change policy to the at least one terminal device recognized by recognizing at least one terminal device connected to the specific radio relay device based on device related information of the information storage section.

According to a fourth aspect of the present invention, there is provided a method for changing a connection between different types of networks, comprising: monitoring a load state of a wireless relay device belonging to at least one network, , The policy related device generates a network change policy according to the load based policy setting information defined in advance for the specific wireless relay device; The policy-related device providing the network change policy to a corresponding terminal device; And changing a network to be connected according to a network change policy in which the terminal device is received.

According to a fifth aspect of the present invention, there is provided a method of operating a terminal device, comprising: connecting to a specific network; Related information including at least one of device information of a wireless relay device of the specific network network and device information of a wireless relay device of a peripheral network connected to the external policy related device; And a connection changing step of changing a network to be connected according to a network change policy received from the outside.

Preferably, the connection changing step determines whether or not the connection is possible in response to the corresponding network network to be changed based on the network changing policy, and attempts to connect to the corresponding network to change if the connection is possible have.

Preferably, the method may further include providing a change-performing result to the policy-related device, the change-related result being changed according to the network change policy.

According to a sixth aspect of the present invention, there is provided a method of operating a policy-related device including: storing policy-setting information for storing predefined load-based policy setting information; A determination step of monitoring a load state of a wireless relay device belonging to at least one network to determine whether a load state of the specific wireless relay device corresponds to a preset change state; And generating a network change policy according to predefined load based policy setting information corresponding to the specific wireless relay apparatus when the load state of the specific wireless relay apparatus corresponds to a predetermined change state as a result of the determination, And a policy providing step of providing the network change policy.

Preferably, the determining step may include: monitoring the load status of at least one wireless relay device belonging to the corresponding network network in correspondence with each network network, and comparing the device information of the at least one wireless relay device and the monitored corresponding load status Based on the load-related information provided for each network network, in cooperation with the load-state monitoring apparatus that provides the load-related information including the load- have.

Preferably, the control unit monitors the load status of at least one wireless relay apparatus belonging to the corresponding network network corresponding to each network network, and monitors the load status of the at least one wireless relay apparatus And a load condition monitoring step of generating information.

Preferably, the device-related information includes at least one of device information of a wireless relay device of a connected specific network network and device information of a wireless relay device of a peripheral network provided from at least one terminal device Step < / RTI >

Preferably, when the load status of the specific radio relay apparatus corresponds to a predetermined change status, the policy providing step may include a network change policy reflecting the load status of the specific radio relay apparatus according to the load- And may provide the network change policy to the recognized at least one terminal device by recognizing at least one terminal device connected to the specific wireless relay device based on the stored device related information.

According to the heterogeneous network connection changing system and method of the present invention, in a heterogeneous network environment, a load state of a wireless relay apparatus such as a base station and an access point (AP) belonging to each network network is monitored and a network change policy To the terminal device, thereby guiding the terminal device to change the access network network, thereby effectively leading the data traffic to the network operating side and securing the network stability.

1 is a configuration diagram illustrating a heterogeneous network connection changing 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 apparatus according to a preferred embodiment of the present invention.
4 is a flowchart illustrating an operation flow of a method for changing a connection between different types of networks according to a preferred embodiment of the present invention.
5 is a flowchart illustrating an operation method of a terminal according to a preferred embodiment of the present invention.
6 is a flowchart illustrating a method of operating a policy related apparatus according to an exemplary embodiment of the present invention.

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

1 is a diagram illustrating a heterogeneous network connection changing system according to a preferred embodiment of the present invention.

1, the heterogeneous network connection changing system according to the present invention includes a terminal apparatus 100 for changing a network network to be connected according to a received network changing policy, a wireless relay apparatus 100 belonging to at least one network, Based on the load-based policy setting information defined in correspondence with the specific radio relay apparatus, when the load state of the specific radio relay apparatus is in the preset change state by monitoring the load state of the specific radio relay apparatus And a policy related device 200 for providing the network change policy to the terminal device 100. [

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

That is, the terminal device 100 supports the connection of the multi-mode or heterogeneous network 10 so as to be utilized in the above-described heterogeneous network 10, and the terminal device 100 can use the services other than the power- Base station (AP) information of the neighboring radio network can be obtained. In addition, it is assumed that the terminal device 100 has a control right for multi-communication (110 in FIG. 2 to be described later) that can access the heterogeneous network 10 without inputting the user.

Here, the heterogeneous network 10 means all or a part of a wireless network that can be connected to a terminal device through interworking of N / W services provided by each provider or owned by a plurality of providers. For example, WCDMA (1), CDMA (2), WLAN (3) (eg WiFi), WiBro (4), LTE (5)

Although not shown in FIG. 1, each network network included in the heterogeneous network 10 includes wireless relay devices belonging to the network. For example, the WCDMA 1 includes base station devices belonging to itself , It is natural that the WLAN 3 has access points (APs) belonging to itself.

The terminal apparatus 100 can use the data service through the wireless relay apparatus of the WCDMA 1, that is, the base station apparatus, through the wireless relay apparatus of the connected specific network network, for example.

At this time, when the network change policy is received from the outside, particularly from the policy related device 200, the terminal device 100 responds to the corresponding network network (for example, the WLAN 3) to change according to the received network change policy Determines whether the connection is possible, and changes the network to be connected from the WCDMA (1) to the WLAN (3) when the connection is possible.

The policy related device 200 monitors a load state of a wireless relay device belonging to each network network included in the heterogeneous network 10 to determine whether a wireless relay device corresponding to the changed state of the load state exists Based on the load-based policy setting information defined in correspondence with the specific radio relay apparatus, when the load state of the specific radio relay apparatus corresponds to the changed state, and transmits the network change policy to the corresponding terminal apparatus 100, To provide a network change policy.

1, a heterogeneous network connection changing system according to the present invention is a system for changing a connection state of at least one wireless relay device belonging to a corresponding network network in response to each network network of the heterogeneous network 10 (300) for monitoring and providing load related information including device information for the at least one wireless relay device and monitored corresponding load status.

That is, the load status monitoring apparatus 300 continuously monitors the load status of the wireless relay apparatuses belonging to the corresponding network network, corresponding to each network network of the heterogeneous network 10, Related information to the policy-related device 200 by providing the load-related information including the device ID, the location information, and the monitored load state to the policy-related device 200, To the device (200).

For example, the load status monitoring apparatus 300 continuously monitors the load status of the base station apparatuses belonging to the WCDMA 1, and monitors the device information (e.g., base station ID, position information, etc.) Related information including the corresponding load status to the policy related device 200 at a specific provisioning time, continuously monitors the load status of the access points (APs) belonging to the WLAN 3, Related information including the device information (e.g., AP ID, location information) of the AP and the load-related information including the monitored load state to the policy related device 200 at a specific providing time, Related information to the policy-related device 200. The policy-

Accordingly, the policy related apparatus 200 interlocks with the load condition monitoring apparatus 300 to determine whether the load state of the wireless relay apparatus belonging to each network network included in the heterogeneous network 10 corresponds to a predetermined change state If it is determined that the load state of the specific wireless relay apparatus corresponds to the changed state, the network change policy is generated corresponding to the specific wireless relay apparatus, .

According to another embodiment of the present invention, the heterogeneous network connection changing system according to the present invention may be configured such that the policy related apparatus 200 does not separately configure the load state monitoring apparatus 300 as described above, If the load state of the specific wireless relay apparatus is changed according to the determination result, the network change policy is generated in response to the specific wireless relay apparatus, ).

The policy-related device 200 provides the network change policy in accordance with the Access Network Discovery and Selection Function (ANDSF) or the Media Independent Handover (MIH) standard in providing the generated network change policy to the corresponding terminal device 100 To the terminal device 100, as shown in FIG.

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

The terminal apparatus 100 according to the present invention includes a multi-communication unit 110 for supporting communication with the heterogeneous network 10, Related information including at least one of device information of a wireless relay apparatus of a wireless network and a wireless relay apparatus of a peripheral network, to the external policy related apparatus 200, And a connection control unit 130 for changing the network network connected through the multi-communication unit 110. [

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

That is, the multi-communicating unit 110 includes a first communication module for supporting access to the WCDMA 1 and using the communication service, a second communication module for supporting access to the CDMA 2 and using the communication service, a WLAN 3 A fourth communication module that supports access to the WiBro 4 and use of the communication service, a connection to the LTE 5, and a communication service, . ≪ / RTI >

The information providing unit 120 may include device related information including at least one of device information of a wireless relay apparatus of a specific network connected through the multi communicator 110 and device information of a wireless relay apparatus of a peripheral network, To the external policy related device (200).

The terminal apparatus 100 can access the WCDMA 1 through a connection with a base station apparatus in a specific network (e.g., WCDMA (1)) via the multi-communicator 110 and use the data service.

When accessing a specific network, the information providing unit 120 transmits the device information (e.g., the base station ID, the base station ID, and the base station ID) of the wireless relay apparatus of the currently connected specific network (e.g., WCDMA (1) (E.g., AP ID, location information, etc.) for an access point (AP) belonging to the wireless relay apparatus of the surrounding network, for example, the surrounding WLAN 3 Related information to the policy-related device 200. The policy-

The connection control unit 130 plays a role of changing a network to be accessed through the multi-communication unit 110 according to a network change policy received from the outside, particularly, the policy related apparatus 200. [

That is, when the network change policy is received from the policy related apparatus 200, the connection control unit 130 will perform the access network change process based on the network change policy received from the policy related apparatus 200.

More specifically, the connection control unit 130 determines whether or not the connection is possible in accordance with the network network to be changed based on the network change policy received from the policy related apparatus 200, It is possible to attempt connection to the corresponding network to be changed through the multi-communication unit 110. [

That is, when the network change policy is received from the policy related apparatus 200, the connection control unit 130 recognizes a corresponding network network (for example, WLAN 3) to change based on the received network change policy, And activates the above-described third communication module to determine whether connection to the corresponding network (e.g., WLAN 3) is possible or not.

At this time, the network change policy received from the policy related device 200 may include heterogeneous network connection change permission and restriction information, optimal network network type information, optimal network network selection and change priority determination information, and the like.

If it is determined that the connection to the network (e.g., WLAN 3) is possible, the connection control unit 130 transmits the connection request to the WLAN 3 via the multi-communication unit 110 activated for use of the communication service (E.g., WCDMA (1)) by attempting to connect to the corresponding network network (e.g., WLAN 3) to be changed and further to terminate the connection to the network network The access network change process can be performed.

Of course, if it is determined that the access to the network (e.g., WLAN 3) is impossible, the access control unit 130 may not perform the access network change process according to the received network change policy.

In this case, the network network changing process may include all or part of the existing handover process of changing the connection from the connected network network to the other network network, and the handover process described above may support handover between existing heterogeneous networks It is a general process to perform based on the policy in the terminal, so a detailed description will be omitted.

The connection control unit 130 may provide the policy related device 200 with the result of the change of the network to be connected according to the network change policy.

For example, when the connection is changed from a network (for example, WCDMA 1) to a network (for example, WLAN 3) that is being connected according to the network change policy, the connection control unit 130 changes And provide the result of the execution to the policy related apparatus 200.

In addition, the connection control unit 130 determines whether the connection to the network (e.g., the WLAN 3) is impossible or the network connection is established according to the network change policy due to an error occurring in the connection change process If not, the policy related device 200 may be provided with a corresponding change execution result.

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

The policy related device 200 according to the present invention includes a policy setting information storage 210 for storing predefined load-based policy setting information, a load state monitoring unit 210 for monitoring a load state of a wireless relay device belonging to at least one network, Based on the load-based policy setting information defined in correspondence with the specific radio relay apparatus, if the load state of the specific radio relay apparatus corresponds to the preset change state, And a device control unit 240 for providing a change policy.

The policy setting information storage unit 210 stores a policy setting information storage unit 210 for storing a policy setting information stored in the policy setting information storage unit 210. The policy setting information storage unit 210 stores policy setting information stored in the policy setting information storage unit 210, Based policy setting information including policy change information and policy decision information based on change policy and specific network change policy creation / decision.

The device control unit 240 monitors the load state of the wireless relay devices belonging to the respective network networks included in the heterogeneous network 10 and judges whether or not there is a wireless relay device whose load state corresponds to the preset change state Based on the load-based policy setting information defined in correspondence with the specific radio relay apparatus, when the load state of the specific radio relay apparatus corresponds to the change state, and transmits the network change policy to the corresponding terminal apparatus 100 Provide network change policy.

1, the device control unit 240 interlocks with the separately configured load state monitoring apparatus 300 to control at least one of the at least one It is possible to monitor the load state of the wireless relay apparatus of the present invention.

That is, as described above, the load status monitoring apparatus 300 continuously monitors the load status of the wireless relay apparatuses belonging to the corresponding network network, corresponding to each network network of the heterogeneous network 10, Related information including the device information (e.g., device ID, location information, and the like) and the monitored load status to the policy related device 200, In other words, it can provide information related to each network load.

Accordingly, the device control unit 240 can determine whether or not the load state of the specific wireless relay device corresponds to the predetermined change state based on the load-related information for each network network provided from the load state monitoring device 300 .

Accordingly, the device control unit 240 interlocks with the load state monitoring apparatus 300 to transmit to the wireless relay apparatuses belonging to the respective network networks included in the heterogeneous network 10 wireless It can be determined whether or not the relay apparatus exists.

At this time, it is preferable that the device control unit 240 sets a change state for each network network. For example, the device control unit 240 divides the WCDMA into the up / down / State, and the load state is classified into the upper and lower according to the WLAN, and the case corresponding to the "upper"

Meanwhile, the policy related apparatus 200 according to the present invention may further include a load condition monitoring unit 230.

The load status monitoring unit 230 monitors the load status of at least one wireless relay device belonging to the corresponding network network corresponding to each network network of the heterogeneous network 10 and monitors the load status of the at least one wireless relay device Related information including information and the monitored load condition to the device control unit 240. [

That is, the load status monitoring unit 230 continuously monitors the load status of the wireless relay apparatuses belonging to the corresponding network network, corresponding to each network network of the heterogeneous network 10, Related information including the device ID, the location information, and the like and the monitored load status to the device control unit 240, load-related information on the wireless relay devices corresponding to the respective network networks, that is, Can provide information related to network load.

The device control unit 240 can determine whether the load state of the specific wireless relay device corresponds to the predetermined change state based on the load related information provided for each network network provided from the load state monitoring unit 230. [

Accordingly, the device control unit 240 can control the load related to each network network according to the monitoring function performed by the policy related device 200 itself by the load state monitoring unit 230 without interlocking with the load state monitoring device 300 It is possible to determine whether or not there is a wireless relay apparatus corresponding to a predetermined change in the load status with respect to the wireless relay apparatuses belonging to the respective network networks included in the heterogeneous network 10. [

If it is determined that the load status of the specific wireless relay apparatus is changed, the device control unit 240 generates a network change policy corresponding to the specific wireless relay apparatus corresponding to the changed status, 100).

More specifically, the policy-related device 200 may further include an information storage unit 220 for storing device-related information provided from the terminal device.

The information storage unit 220 may include at least one of device information of a wireless relay apparatus of a connected specific network network provided from at least one terminal apparatus 100 and device information of a wireless relay apparatus of a peripheral network network And stores / manages device-related information.

The policy related apparatus 200 then transmits the policy related device 200 a radio relay device of a specific network network (e.g., WCDMA (1)) to which the terminal device 100 is currently connected, (For example, base station ID, location information, etc.) for the access point AP belonging to the surrounding wireless network wireless relay apparatus, for example, an access point (AP) belonging to the nearby WLAN 3 For example, an AP ID, location information, and the like).

Accordingly, when the load state of the specific radio relay apparatus corresponds to the preset change state, the device control unit 240 generates the network change policy according to the load-based policy setting information reflecting the load state of the specific radio relay apparatus And recognizes at least one terminal apparatus 100 connected to the specific radio relay apparatus on the basis of apparatus related information of the information storage unit 220 and provides the network change policy to the recognized at least one terminal apparatus 100 can do.

For example, when the load state of a specific radio relay apparatus, that is, a specific base station apparatus belonging to the WCDMA 1 corresponds to a predetermined change state (for example, phase), the apparatus control unit 240 controls the load state Based on the load-based policy setting information, and determines and creates a network change policy that induces the terminal apparatus to change the access network.

The device control unit 240 recognizes at least one terminal device 100 connected to the corresponding specific base station device based on the device-related information of the information storage unit 220, Provides the generated network change policy.

Accordingly, the terminal apparatus 100 determines whether or not the connection is possible in response to the corresponding network network (for example, the WLAN 3) to be changed according to the network change policy received from the policy related apparatus 200 as described above , And if the connection is possible, the network to be connected will be changed from the WCDMA 1 to the WLAN 3.

As described above, the heterogeneous network connection changing system according to the present invention monitors a load state of a wireless relay device such as a base station and an access point (AP) belonging to each network in a heterogeneous network environment, The change policy is issued to the corresponding terminal device, thereby inducing the terminal device to change the access network, thereby effectively leading the data traffic to the network operating side and securing the network stability.

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

First, referring to FIG. 4, a method for changing a heterogeneous network connection according to a preferred embodiment of the present invention will be described.

The terminal apparatus 100 accesses a network (e.g., WCDMA) through a connection with a wireless relay apparatus of a specific network (e.g., WCDMA), i.e., a base station apparatus, and uses the data service (S10).

Meanwhile, the policy-related device 200 monitors the load state of the wireless relay device belonging to at least one network of the heterogeneous network 10 (S20), and the wireless relay device corresponding to the predetermined change state It is determined whether or not the device exists (S30).

If it is determined in step S30 that the load state of the specific radio relay device corresponds to the changed state, the policy related device 200 determines, based on the load-based policy setting information defined in correspondence with the specific radio relay device, (S40), and provides a network change policy to the corresponding terminal device 100 (S50).

Accordingly, the terminal device 100 receiving the network change policy from the outside particularly from the policy related device 200 changes the network to be connected according to the received network change policy (S60) For example, the WLAN 3 (S70).

Hereinafter, an operation method of the terminal apparatus according to the present invention will be described in more detail with reference to FIG.

The method of operating the terminal device 100 according to the present invention is a method of operating the terminal device 100 by connecting to the WCDMA 1 through a connection with a base station device in a specific network (e.g., WCDMA (1)) of the heterogeneous network 10, (S100).

The method of operating the terminal device 100 according to the present invention when connecting to a specific network network is a method of operating the wireless relay device of the currently connected specific network network (e.g., WCDMA (1)), (E.g., AP ID, location information, etc.) for an access point (AP) belonging to the wireless relay apparatus of the surrounding network network, for example, the WLAN 3 located nearby, Related information including at least one of the device-related information to the policy-related device 200 (S110).

The method of operation of the terminal device 100 according to the present invention is a method of operating the terminal device 100 based on the network change policy received from the policy related device 200, .

More specifically, the method of operating the terminal device 100 according to the present invention determines whether a network change policy is received from the policy related device 200 (S120), and when the network change policy is received, The access network change process is performed based on the change policy (S130).

That is, when the network change policy is received from the policy related device 200, the operation method of the terminal device 100 according to the present invention is a method of operating the corresponding network network (for example, the WLAN 3) And activates the function of the multi-communicator 110 for accessing the WLAN 3 and using the communication service to determine whether or not access to the corresponding network (e.g., WLAN 3) is possible.

At this time, the network change policy received from the policy related device 200 may include heterogeneous network connection change permission and restriction information, optimal network network type information, optimal network network selection and change priority determination information, and the like.

Accordingly, when it is determined that connection to the network (e.g., WLAN 3) is possible, the operation method of the terminal device 100 according to the present invention is a method of connecting to the WLAN 3 and activating By attempting to access a corresponding network network (for example, the WLAN 3) to be changed through the multi-communicating unit 110 and further terminating the connection state with respect to the network network (e.g., WCDMA (1) It is possible to perform an access network change procedure according to the received network change policy.

Of course, when it is determined that access to the network (e.g., WLAN 3) is impossible, the method of operating the terminal device 100 according to the present invention performs an access network change process according to the received network change policy .

If the network change policy is not received in step S120, the terminal 100 maintains the connection state with respect to the currently connected network (e.g., WCDMA (1)) (S150) .

In addition, the operation method of the terminal device 100 according to the present invention may provide the policy related device 200 with a result of changing the network to be connected according to the network change policy (S140).

For example, the operation method of the terminal device 100 according to the present invention changes the connection from a network (for example, WCDMA 1) to a network (e.g., WLAN 3) The policy related device 200 may provide the corresponding change execution result.

The operation method of the terminal device 100 according to the present invention can be applied to a case where it is determined that the connection to the network (e.g., the WLAN 3) is impossible or the network change When the network access is not changed according to the policy, the policy related device 200 can provide the corresponding change execution result.

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.

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

That is, the method of operating the policy-related device 200 according to the present invention induces the terminal device to change the connection to the optimal network according to the load state of the network network currently connected in the heterogeneous network 10 environment Based policy setting information including policy definition information based on various predefined network change policies and specific network change policies to create / determine.

The operation method of 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 is a method of operating the policy related device 200 according to the device information of the wireless relay device of the connected specific network network provided from at least one terminal device 100, And device-related information including at least one of the device-related information.

The method of operating the policy related device 200 according to the present invention is a method of operating the policy related device 200 according to the present invention so that the wireless network of the specific network network (e.g., WCDMA (1)) to which the terminal device 100 is currently connected (For example, base station ID, location information, and the like) for the relay apparatus, that is, the connected base station apparatus, and a wireless relay apparatus of the peripheral network wireless terminal of the terminal apparatus 100, (E.g., AP ID, location information, and the like) for the AP.

The method of operating the policy related device 200 according to the present invention monitors a load state of a wireless relay device belonging to each network network included in the heterogeneous network 10 at step S220, (S230). If it is determined in step S230 that the load state of the specific wireless relay apparatus corresponds to the changed state, the load-based policy setting information defined in advance for the specific wireless relay apparatus The network change policy is generated (S240), and the network change policy is provided to the corresponding terminal device 100 (S250 to S260).

More specifically, an operation method of the policy related device 200 according to the present invention is a method of operating the policy related device 200 according to an embodiment of the present invention, It is possible to monitor the load status of at least one wireless relay device belonging to the network network corresponding to the network.

That is, as described above, the load status monitoring apparatus 300 continuously monitors the load status of the wireless relay apparatuses belonging to the corresponding network network, corresponding to each network network of the heterogeneous network 10, Related information including the device information (e.g., device ID, location information, and the like) and the monitored load status to the policy related device 200, In other words, it can provide information related to each network load.

The operation of the policy related device 200 according to the present invention is a method in which the load state of a specific wireless relay device is changed to a predetermined change state based on the load related information provided for each network network provided from the load state monitoring device 300 It can be judged whether or not it is applicable.

Accordingly, the operation method of the policy related device 200 according to the present invention is such that the load state of the wireless relay device belonging to each network network included in the heterogeneous network 10 is interlocked with the load state monitoring device 300 It is possible to determine whether or not there is a radio relay apparatus corresponding to the preset change state.

In this case, it is preferable that the policy related device 200 according to the present invention sets up a change state for each network network. For example, the policy related device 200 may be divided into upper, Phase "corresponds to the changed state, and the load state is classified into the upper / lower state corresponding to the WLAN, and the state corresponding to the" upper "state corresponds to the changed state.

Meanwhile, the method of operating the policy related device 200 according to the present invention is a method of continuously monitoring the load state of a wireless relay device belonging to the corresponding network network, corresponding to each network network of the heterogeneous network 10, Related information including the device information (eg, device ID, location information) of the device and the monitored load condition, thereby determining the load state of the specific wireless relay device based on the load- It is possible to judge whether or not it corresponds to the preset change state.

Accordingly, the operation method of the policy related device 200 according to the present invention can be performed by the network monitoring device 300 without interworking with the load state monitoring device 300, based on the load- It is possible to determine whether or not there is a wireless relay apparatus corresponding to a predetermined change in the load status with respect to the wireless relay apparatuses belonging to the network networks included in the network 10.

If it is determined in step S230 that the load state of the specific radio relay apparatus corresponds to the changed state, the operation method of the policy related apparatus 200 according to the present invention is a method of operating the network related to the specific radio relay apparatus corresponding to the changed state A change policy can be generated and provided to the corresponding terminal device 100.

That is, the operation method of the policy-related device 200 according to the present invention is a method of operating the policy-related device 200, when the load state of the specific wireless relay device corresponds to a predetermined change state, (S240), recognizes at least one terminal apparatus 100 connected to the specific radio relay apparatus based on the stored apparatus related information (S250), and recognizes the at least one terminal apparatus 100 The network change policy may be provided to the network 100 (S260).

For example, the operation method of the policy related device 200 according to the present invention is a method in which when the load state of a specific radio relay device, that is, a specific base station device belonging to the WCDMA 1, corresponds to a preset change state , Determines a network network (for example, a WLAN 3) to which a connection is to be guided based on the load-based policy setting information reflecting the load state of the specific base station apparatus, and generates a network change policy that induces the terminal apparatus to change the access network / Determine.

The operation method of the policy related device 200 according to the present invention recognizes at least one terminal device 100 connected to the specific base station device on the basis of the device related information, Provide the network change policy created this time.

Accordingly, the terminal apparatus 100 determines whether or not the connection is possible in response to the corresponding network network (for example, the WLAN 3) to be changed according to the network change policy received from the policy related apparatus 200 as described above , And if the connection is possible, the network to be connected will be changed from the WCDMA 1 to the WLAN 3.

As described above, the heterogeneous network connection changing method according to the present invention monitors a load state of a wireless relay device such as a base station and an access point (AP) belonging to each network in a heterogeneous network environment, The change policy is issued to the corresponding terminal device, thereby inducing the terminal device to change the access network, thereby effectively leading the data traffic to the network operating side and securing the network stability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In a heterogeneous network environment, a load state of a wireless relay device such as a base station and an access point (AP) belonging to each network is monitored and a network change policy based on the load state is provided to the corresponding terminal device, In case of applying the heterogeneous network access change system and method which induces change of the network, it can bring about great achievement in terms of network operation improvement and stability, traffic operation efficiency, and user satisfaction, The possibility of marketing or operating a service solution through this is sufficient and can be practically and practically carried out.

10: Heterogeneous network
100: terminal device
200: Policy related device
300: load condition monitoring device

Claims (18)

A terminal device for changing a network network to be connected among heterogeneous network networks according to a received network change policy; And
And monitoring a load state of a wireless relay device belonging to at least one network among the heterogeneous network, and when a load state of the specific wireless relay device corresponds to a preset change state, And a policy related device for generating a network change policy according to the load based policy setting information and providing the network change policy to a terminal device connected to the specific wireless relay device. A multi communicator for supporting communication with a heterogeneous network;
Related information including at least one of device information of a wireless relay device of a specific network connected through the multi-communication unit and device information of a wireless relay device of a peripheral network, study; And
And a connection control unit for changing a network network connected through the multi-communication unit according to a network change policy received from the outside. 3. The method of claim 2,
The connection control unit,
Determines whether or not connection is possible in accordance with the network network to be changed based on the network change policy, and attempts to connect to the network network to change through the multi-communication unit when the connection is possible. . The method according to claim 2 or 3,
The connection control unit,
And provides the policy related device with a result of performing a change of a network to be connected according to the network change policy. A policy setting information storage unit for storing previously defined load-based policy setting information; And
Based on a load state of a wireless relay apparatus belonging to at least one network and monitoring a load state of the wireless relay apparatus corresponding to the predetermined change state, And a device controller for generating a network change policy according to the network change policy and providing the network change policy to the corresponding terminal device. 6. The method of claim 5,
The apparatus control unit includes:
Monitoring the load status of at least one wireless relay device belonging to the network network corresponding to each network network and providing load related information including device information of the at least one wireless relay device and monitored corresponding load status And determines whether or not the load state of the specific radio relay apparatus corresponds to a predetermined change state based on load related information provided for each network network in cooperation with the load state monitoring apparatus. 6. The method of claim 5,
Monitoring the load status of at least one wireless relay device belonging to the network network corresponding to each network network and transmitting load related information including the device information of the at least one wireless relay device and the monitored corresponding load status to the device And a load state monitoring unit for providing the control signal to the control unit. 8. The method according to any one of claims 5 to 7,
An information storage unit for storing device-related information including at least one of device information of a wireless relay apparatus of a connected specific network network and device information of a wireless relay apparatus of a peripheral network provided from at least one terminal apparatus A policy-related device. 9. The method of claim 8,
The apparatus control unit includes:
Based on the load-based policy setting information reflecting the load status of the specific radio relay apparatus, when the load status of the specific radio relay apparatus corresponds to the predetermined change status, Wherein the at least one terminal device recognizes at least one terminal device connected to the specific radio relay device and provides the network change policy to the recognized at least one terminal device. When the load state of the specific radio relay device is in a predetermined change state by monitoring the load state of the radio relay device belonging to at least one network among the heterogeneous network, Generating a network change policy according to the predefined load based policy setting information;
The policy related device providing the network change policy to a terminal device connected to the specific wireless relay device; And
Wherein the terminal device is configured to change a network to be accessed in the heterogeneous network according to the received network change policy. Connecting to a specific network;
Related information including at least one of device information of a wireless relay device of the specific network network and device information of a wireless relay device of a peripheral network connected to the external policy related device; And
And changing an access network according to a network change policy received from the outside. 12. The method of claim 11,
The connection changing step may include:
Determining whether or not a connection is possible in response to a corresponding network network to be changed based on the network change policy, and attempting to connect to the corresponding network to change if the connection is possible. 13. The method according to claim 11 or 12,
Further comprising the step of providing the policy related device with a change execution result of changing a network to be connected according to the network change policy. A policy setting information storing step of storing predefined load-based policy setting information; And
A determination step of monitoring a load state of a wireless relay device belonging to at least one network to determine whether a load state of the specific wireless relay device corresponds to a preset change state;
If it is determined that the load status of the specific radio relay apparatus corresponds to the predetermined change status, the network change policy is generated according to the load-based policy setting information defined in correspondence with the specific radio relay apparatus, And a policy providing step of providing the network change policy. 15. The method of claim 14,
Wherein,
Monitoring the load status of at least one wireless relay device belonging to the network network corresponding to each network network and providing load related information including device information of the at least one wireless relay device and monitored corresponding load status Wherein the control unit determines whether or not the load state of the specific radio relay apparatus corresponds to a preset change state based on the load related information provided for each network network in cooperation with the load state monitoring apparatus . 15. The method of claim 14,
Monitors the load status of at least one wireless relay device belonging to the corresponding network network corresponding to each network network and generates load related information including device information of the at least one wireless relay device and monitored corresponding load status Further comprising a step of monitoring a load condition. 17. The method according to any one of claims 14 to 16,
Storing device-related information including at least one of device information of a wireless relay device of a connected specific network network and device information of a wireless relay device of a peripheral network provided from at least one terminal device Wherein the policy-related device is a computer-readable recording medium. 18. The method of claim 17,
The policy providing step includes:
Based on the load-based policy setting information reflecting the load state of the specific radio relay apparatus, when the load state of the specific radio relay apparatus corresponds to the preset change state, Wherein the at least one terminal device recognizes at least one terminal device connected to the specific radio relay device and provides the network change policy to the recognized at least one terminal device.

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