KR20130030511A - Apparatus and method for simultaneously transmitting data in heterogeneous network - Google Patents

Abstract

PURPOSE: A service method for simultaneously transmitting data based on heterogeneous networks and a device therefor are provided to supply a simultaneous transmission service based on a network selection policy corresponding to designated subscriber type information when data transmission is resumed within set time. CONSTITUTION: A policy setting unit(110) sets a data transmission ratio for each of two or more connection networks based on a network selection policy corresponding to subscriber type information of a terminal device. When malfunction occurs in one of the connection networks, the policy setting unit converts the data transmission ratio set in the connection network into data transmission ratios of other networks. A control unit(120) selects partial data from transmission target data based on the set data transmission ratios. A communication unit(130) divides and transmits the selected partial data through the connection networks. [Reference numerals] (110) Policy setting unit; (120) Control unit; (130) Communication unit

Description

Heterogeneous network-based data transmission service method and apparatus applied thereto {APPARATUS AND METHOD FOR SIMULTANEOUSLY TRANSMITTING DATA IN HETEROGENEOUS NETWORK}

The present invention relates to a data simultaneous transmission method, and more particularly, in a heterogeneous network environment, data transmission resumes within a set time in a state in which data transmission is stopped for a corresponding access network according to an abnormal detection of a specific access network. If so, the present invention relates to a heterogeneous network-based data simultaneous transmission service method for providing a simultaneous transmission service based on a network selection policy corresponding to predetermined subscriber type information, and a management device and a method of operating the management device.

Recently, operators often provide services based on multiple wireless technologies at the same time. In Korea, major operators are building and servicing networks by introducing WCDMA, CDMA, WiBro and WLAN (WiFi) technology, which is the nearest wireless network. In addition, LTE (Long Term Evolution) network is actively being introduced recently.

The present method in which a terminal device uses a data service in a heterogeneous network environment in which a plurality of networks are mixed 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 method when considering the position of the business operator.

Meanwhile, as various wireless devices such as smartphones and tablet PCs are increasing, data rates are getting cheaper, and various large data services are increasing at the same time, as network load rate of operators is rapidly increasing, network investment is excessively expended and service stability. The situation is being threatened.

Accordingly, there is a need for a new service method for efficiently selecting an access network of a terminal device according to the state of a network in a heterogeneous network environment where a plurality of networks are mixed and efficiently transmitting data using the selected network.

The present invention has been made in view of the above circumstances, and an object of the present invention is to transmit according to a data transmission rate for each access network based on a network selection policy stored by a terminal device in response to predetermined subscriber type information. Receive partial data divided from the target data through two or more networks, and when a management device has an abnormality in a specific access network, the data transfer rate assigned to the specific access network is switched to the remaining access network. If the terminal apparatus resumes data transmission for the specific access network within a preset time, the terminal apparatus requests resetting of the data transmission rate for each access network based on the subscriber type information, and the management apparatus requests the subscriber type information. Corresponding network selection By providing a heterogeneous network-based simultaneous data transmission service method for restoring the data transmission rate for each access network based on the data transmission, data transmission can be resumed within a set time in a state in which data transmission for the access network is stopped due to abnormal detection of a specific access network. In this case, the present invention provides a simultaneous transmission service based on a network selection policy corresponding to predetermined subscriber type information.

The present invention has been made in view of the above circumstances, and another object of the present invention is to set a data transmission rate of two or more access networks based on a network selection policy stored in correspondence with subscriber type information of a terminal device. And, when an error occurs in a specific access network among the two or more access networks, set the data transmission rate assigned to the specific access network to the remaining access network, thereby switching the specific access network to the data transmission stop state, and within the set time. When the data transmission to the access network is resumed, a management apparatus for restoring the data transmission rate for each access network by reflecting the network selection policy stored in response to the subscriber type information and a method of operation thereof are provided. Correspondence net The stop data transmission for greater state, if the data transmission resumed within a set time period to provide a broadcast service based on the network selection policy corresponding to a given subscriber Freestyle information.

The present invention was created in view of the above circumstances, and another object of the present invention is to transmit data according to a data transmission rate for each access network based on a network selection policy stored corresponding to predetermined subscriber type information. Receives the partial data divided in through the two or more networks, and when an abnormal occurrence of a specific access network of the two or more access network is detected, the data transmission rate assigned to the specific access network is set to switch to the other access network When a specific access network is switched to a data transmission stop state and data transmission to the specific access network is resumed within a set time, the data transmission rate for each access network is restored according to the stored network selection policy corresponding to the subscriber type information. Ha Providing a terminal device and an operation method thereof, when data transmission is resumed within a set time in a state in which data transmission is stopped for a corresponding access network according to an abnormal detection of a specific access network, a network selection policy corresponding to predetermined subscriber type information is applied. The basic purpose is to provide simultaneous transmission service.

The management apparatus according to the first aspect of the present invention for achieving the above object, the data transmission rate for each of the at least two access network based on the stored network selection policy corresponding to the subscriber type information of the terminal device, and sets the data transfer rate of the two or more access; A policy setting unit for converting and setting a data transmission rate assigned to the specific access network to the remaining access network when an error occurs in the specific access network; A control unit for selecting the divided partial data from the transmission target data based on the set data transmission rate for each access network; And a communication unit configured to divide and transmit the selected partial data through two or more networks, wherein the policy setting unit is configured to set the specified data within a predetermined time period in a state in which data transmission is stopped for the specific access network due to an abnormal occurrence of the specific access network. When data transmission to the access network is resumed, the data transmission rate for each access network is restored by reflecting the network selection policy stored in correspondence with the subscriber type information.

Preferably, the policy setting unit provides the subscriber type information to the terminal device in response to a data transmission stop request for the specific access network received from the terminal device when an error occurs in the specific access network. When a data transmission resumption request including the provided subscriber type information is received from the terminal device in response to resuming data transmission for the specific access network within a time period, based on the network selection policy stored in correspondence with the received subscriber type information. It is characterized by restoring the data transfer rate for each access network.

Preferably, the policy setting unit, when the subscriber type information is not received from the terminal device within the set time, obtains a new network selection policy from the policy management device for determining the network selection policy, the data transmission rate for each access network It characterized in that to recover.

A terminal apparatus according to the second aspect of the present invention for achieving the above object, the partial data divided from the data to be transmitted according to the data transmission rate for each access network based on the network selection policy stored in response to the predetermined subscriber type information Communication unit for receiving the through two or more networks; And generating the transmission target data by combining the partial data received for each access network, and when an abnormal occurrence of a specific access network is detected among the two or more access networks, the data transmission rate specified for the specific access network is the remaining access network. And a control unit for switching the specific access network to a data transmission stop state, wherein the control unit is stored in response to the subscriber type information when data transmission for the specific access network is resumed within a set time. According to the network selection policy, the data transmission rate for each access network is restored.

Preferably, when the controller detects an abnormal occurrence of the specific access network, the controller transmits a data transmission stop request for the specific access network to a management device to receive and store the subscriber type information from the management device. When the data transmission for the specific access network is resumed within the set time, a data transmission resumption request including the stored subscriber type information is transmitted to the management device, and according to the stored network selection policy corresponding to the subscriber type information. Restore data transmission rate by access network.

Preferably, when the data transmission for the specific access network is resumed after the set time has elapsed, the controller deletes the stored subscriber type information and transmits a data transmission resumption request to the management device. The data transmission rate for each access network is restored according to a new network selection policy provided from the policy management device for determining the network selection policy.

Heterogeneous network-based data transmission service method according to a third aspect of the present invention for achieving the above object, the terminal device to the data transmission rate for each access network based on the network selection policy stored in response to the predetermined subscriber type information; A partial data receiving step of receiving the partial data divided from the transmission target data through two or more networks accordingly; A switching setting step of the management apparatus converting and setting the data transmission rate assigned to the specific access network to the remaining access network when an error occurs in the specific access network among the two or more access networks; A reset request step of requesting, by the terminal device, to reset the data transmission rate for each access network based on the subscriber type information, when data transmission for the specific access network is resumed within a set time; And a transmission rate recovery step of the management apparatus recovering a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information.

A method of operating a management device according to a fourth aspect of the present invention for achieving the above object, the transmission rate for setting the data transmission rate for two or more access network based on the network selection policy stored in response to the subscriber type information of the terminal device; Setting step; A switching setting step of switching the specific access network to a data transmission stop state by setting and setting a data transmission rate assigned to the specific access network to the remaining access network when an error occurs in the specific access network among the two or more access networks; And a transmission rate recovery step of recovering the data transmission rate for each access network by reflecting the network selection policy stored in response to the subscriber type information when the data transmission for the specific access network is resumed within a set time. .

Preferably, in the switching setting step, the subscriber type information is provided to the terminal device according to a request for stopping data transmission for the specific access network received from the terminal device when an error occurs in the specific access network. It is done.

Preferably, in the transmission rate recovery step, when a data transmission resume request including the provided subscriber type information is received from the terminal device according to the data transmission resume for the specific access network within the set time, The data transmission rate for each access network is restored based on the network selection policy stored in response to the subscriber type information.

Preferably, the transmission rate recovery step, if the subscriber type information is not received from the terminal device within the set time, by acquiring a new network selection policy from the policy management device for determining the network selection policy data by access network; It is characterized by recovering the transmission rate.

In accordance with a fifth aspect of the present invention, there is provided a method of operating a terminal device, wherein the terminal apparatus divides the data into transmission target data according to a data transmission rate for each access network based on a stored network selection policy corresponding to predetermined subscriber type information. Partial data receiving step for receiving the received partial data through two or more networks; A switching setting step of switching the specific access network to a data transmission stop state by causing a data transmission rate assigned to the specific access network to be set to switch to the remaining access network when an abnormal occurrence of a specific access network is detected among the two or more access networks. ; And a transmission rate recovery step of recovering the data transmission rate for each access network according to the stored network selection policy corresponding to the subscriber type information when the data transmission for the specific access network is resumed within a set time. do.

Preferably, in the switching setting step, when an abnormal occurrence of the specific access network is detected, a request for stopping data transmission for the specific access network is transmitted to a management device to receive the subscriber type information from the management device. It is characterized by storing.

Preferably, the transmission rate recovery step, if the data transmission for the particular access network is resumed within the set time, by transmitting a data transmission resume request including the stored subscriber type information to the management device, the subscription The data transmission rate for each access network may be restored according to the stored network selection policy corresponding to the freeform information.

Preferably, in the transmission rate recovery step, if data transmission for the specific access network is resumed after the set time has elapsed, the stored subscriber type information is deleted and a request for resuming data transmission is sent to the management apparatus. The data transmission rate for each access network may be restored according to a new network selection policy provided from a policy management device for determining the network selection policy.

Accordingly, according to the heterogeneous network-based data transmission service method of the present invention, in a heterogeneous network environment, data transmission resumes within a set time in a state in which data transmission is stopped for a corresponding access network according to an abnormal detection of a specific access network. In this case, the simultaneous transmission service is resumed by immediately reflecting the network selection policy according to the predetermined subscriber type information, thereby preventing duplicate operations for acquiring the same network selection policy applied before the data transmission stop state. By effectively shifting traffic, data quality of service can be improved and network stability can be ensured.

1 is a schematic configuration diagram of a heterogeneous network-based data transmission service system according to an embodiment of the present invention.
2 is a schematic configuration diagram of a management device according to an embodiment of the present invention.
3 is a schematic structural diagram of another terminal device according to an embodiment of the present invention;
4 is a schematic flowchart illustrating a method of operating a heterogeneous network-based simultaneous data transmission service system according to an embodiment of the present invention.
5 is a schematic flowchart illustrating the operation of the management device according to an embodiment of the present invention.
6 is a schematic flowchart illustrating an operation of a terminal device according to an embodiment of the present invention.

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

1 is a schematic block diagram of a heterogeneous network-based simultaneous data transmission service system according to an embodiment of the present invention.

As shown in FIG. 1, the heterogeneous network-based data transmission service system according to the present invention divides data into two or more pieces of partial data, and assigns a specific virtual network to first partial data corresponding to a portion of the two or more pieces of partial data. From the management apparatus 100 and the management apparatus of the transmission apparatus which transmits including the connection information and transmitting the virtual network connection information in the second partial data corresponding to another part of the two or more partial data. The first network apparatus 200 for receiving the first partial data, the second network apparatus 300 for receiving the second partial data from the management apparatus 100 and the first network apparatus 200 from the first network apparatus 200. Receives the first partial data and the second partial data from the second network device 300, the first partial data and the virtual data included in the second partial data And a terminal device 400 as a receiving device for generating the data by combining the first partial data and the second partial data according to the specific virtual network connection information based on the network connection information. In addition, the heterogeneous network-based data transmission service system according to the present invention, the external device 500 for requesting the delivery to the terminal device 400 to deliver to the management device 100, the policy management device for providing a network selection policy ( 600).

The heterogeneous network-based data transmission service according to the present invention implements a configuration in which data is transmitted and received by using a plurality of heterogeneous networks for data transmission and reception between the terminal device 400 and the external device 500.

Therefore, in the present invention, session division is performed in the management apparatus 100 to implement simultaneous link transmission through a plurality of heterogeneous networks for one session. In this case, since the terminal device 400 is connected to each of a plurality of heterogeneous networks, the management device 100 recognizes that the terminal device 400 is a link of one terminal device 400 for each simultaneous link through the plurality of heterogeneous networks. The terminal device 400 must be managed as one subject. To this end, it is necessary to allocate and manage separate virtual network access information (eg, virtual IP) for the transmission service in correspondence to the terminal device 400.

Here, the external device 500 refers to a server device that performs data transmission and reception with the terminal device 400 through the management device 100, to the terminal device 400 through data transmission and reception through the management device 100. For example, various services such as a portal service and a content providing service may be provided.

In addition, the policy management device 600 determines the network selection policy including the data transmission rate for each network set to correspond to the terminal device 400, and provides the network selection policy to the management device 100 and the terminal device 400. Here, the network selection policy provided to the management device 100 is applied to the downlink operation in which the management device 100 is a subject of data transmission, and, in the case of the network selection policy provided to the terminal device 400, the terminal device ( 400 is applied to the uplink operation that is the subject of data transmission.

The heterogeneous network may correspond to various access networks including, for example, WCDMA, CDMA, WiBro, WLAN (WiFi), and Long Term Evolution (LTE). ) And a second network (hereinafter, referred to as a "3G network") and a second network (hereinafter referred to as a "WiFi network") which refer to a local area wireless network (WiFi).

Accordingly, the first network device 200 refers to a gateway GPRS support node (GGSN) device for operating a 3G network, that is, a wireless packet service network, and the second network device 300 is a WiFi network, It refers to an access point (AP) for operating a local area wireless network.

In addition, the management apparatus 100 and the terminal apparatus 400 may also be a transmitting apparatus according to the uplink process and the downlink process, that is, depending on the service flow, that is, the subject transmitting data using the data simultaneous transmission service. It can also be a receiver. In the present embodiment, for convenience of description, it is assumed that the management device 100 as a transmitting device which is located in a heterogeneous network environment and provides data transmission service simultaneously to the terminal device 400, and the management device 100 and data Assuming a terminal device 400 as a receiving device that performs transmission and reception will be described.

The management device 100 sets a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information of the terminal device 400.

That is, the management apparatus 100 corresponds to the subscriber type information designated by various criteria, for example, whether a particular service subscriber (for example, unlimited data service), a service plan, and a heavy user. Receives and stores the network selection policy from the policy management apparatus 600, and based on the stored network selection policy, the first transmission rate for data transmission to the first network apparatus 200 and the data to the second network apparatus 300. A second transmission rate for the transmission is set. At this time, the management apparatus 100 determines the relative usage ratio of the 3G network and the WiFi network according to the network selection policy determined according to the subscriber type information. For example, the 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10% 3G network 50%: WiFi network 50%, 3G network 100%: WiFi network 0%, 3G network 0%: WiFi network 100% and the like can be variously set.

On the other hand, the management device 100 is set by switching the data transmission rate assigned to the WiFi network when the abnormality of the WiFi network.

That is, the management device 100 is a 3G network and the WiFi network, when the abnormality of the WiFi network, for example, when no traffic occurs for a predetermined time (for example, 1 minute) through the WiFi network, the terminal device 400 from the WiFi network The data transmission stop request (WiFi Pause) is received through the first network device 200 located in the 3G network. Accordingly, the management device 100 is connected so that the second transmission rate for data transmission to the second network device 300 located in the WiFi network can be transmitted through the first network device 200 located in the 3G network. By changing and setting the data transmission rate for each network, the WiFi network is switched to the data transmission stop state. In this case, as the management device 100 switches the WiFi network to the data transmission stop state, the management device 100 transmits a response message (WiFi Pause Ack) corresponding to the data transmission stop request (WiFi Pause) to the terminal device 400. The response message will include subscriber type information for the terminal device 400.

Furthermore, the management apparatus 100 restores the data transmission rate for each access network when the data transmission is resumed in the data transmission stop state for the WiFi network.

That is, the management device 100 is a notification message for informing the terminal device 400 to resume data transmission when the data transmission for the WiFi network is resumed within a set time through recovery from the data transmission stop state for the WiFi network. Pass (Refresh). Subsequently, when receiving a data transmission resume request (WiFi Resume) including the provided subscriber type information from the terminal device 400, the management device 100 based on the stored network selection policy corresponding to the received subscriber type information. By restoring the data transmission rate for each access network, the transmission rate for each access network before the data transmission stop state, that is, the first transmission rate for data transmission to the first network device 200 and the data to the second network device 300. The second transmission rate for the transmission is restored. On the other hand, the management device 100 receives a data transmission resume request (WiFi Resume) that does not include subscriber type information from the terminal device 400 when the data transmission for the WiFi network is resumed after the set time has elapsed. Accordingly, the updated network selection policy is obtained from the policy management apparatus 600 in consideration of the change of the network environment over the set time, thereby setting the transmission rate for each access network.

In addition, the management apparatus 100 selects the partial data divided from the transmission target data to provide a simultaneous transmission service corresponding to the subscriber type information.

That is, the management device 100 divides the transmission data according to the data transmission rate for each access network in order to transfer the transmission target data transmitted from the external device 500 to the terminal device 400 as a destination. In other words, the management apparatus 100 may transmit the first transmission rate for data transmission to the first network apparatus 200 and the second network apparatus 300 for data transmission according to the subscriber type information of the terminal apparatus 400. Checking the second transmission rate, selecting the first partial data to be transmitted to the first network device 200 of the divided partial data based on the confirmed transmission rate, and the second network device 300 of the remaining partial data The second partial data to be transmitted is selected. In the meantime, when the data transmission stop state for the WiFi network, the management device 100 transmits the second partial data to be transmitted to the second network device 300 according to the data transmission rate for each switched access network. It will select to send.

In addition, the management apparatus 100 transmits the selected partial data classified according to the subscriber type using the corresponding network.

That is, the management apparatus 100 transmits the selected partial data divided according to the service type, that is, the first partial data to the first network apparatus 200 located in the 3G network, thereby causing the first network apparatus 200 to transmit. The first partial data is transmitted to the terminal device 400 as a receiving device. The management apparatus 100 transmits the second partial data to the specific second network apparatus 300 selected based on the connection target network apparatus information, so that the second network apparatus 300 receives the second partial data. Transmission to the terminal device 400 as a device.

The terminal device 400 restores data by receiving data dividedly transmitted from the first network device 200 and the second network device 300 according to the data transmission rate for each access network based on the network selection policy.

That is, the terminal device 400 receives the first partial data from the first network device 200 according to the data transmission rate for each access network based on the network selection policy stored in correspondence with the predetermined subscriber type information and the second network. Receiving the second partial data from the device 300, by generating the data by combining the first partial data and the second partial data based on the received first partial data and the virtual network connection information included in the second partial data, The management apparatus 100 restores the transmission target data to be transmitted. In other words, the terminal device 400 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the corresponding partial data. By combining and combining according to the order information, the original transfer target data can be generated.

Meanwhile, when an abnormality of the WiFi network occurs, the terminal device 400 switches the data transmission rate assigned to the WiFi network to be set.

That is, the terminal device 400, when there is an abnormality of the WiFi network, for example, no traffic occurs during the set time (for example, 1 minute) through the WiFi network, the 3G network and the WiFi network, the data transmission stop request for the WiFi network The WiFi network is transferred to the management device 100 through the first network device 200 located in the 3G network, thereby switching the WiFi network to the data transmission stop state. Accordingly, the terminal device 400 receives a response message (WiFi Pause Ack) including subscriber type information of the terminal device 400 in response to the data transmission stop request (WiFi Pause) from the management device 100. The subscriber type information included in the corresponding response message (WiFi Pause Ack) is stored for a set time.

Further, the terminal device 400 is to restore the data transmission rate for each access network when the data transmission is resumed in the data transmission stop state for the WiFi network.

That is, when the data transmission for the WiFi network is resumed within the set time in the data transmission stop state of the WiFi network, the terminal device 400 notifies the data transmission resume from the management device 400 (Refresh). Will be received. Thereafter, the terminal device 400 transmits a data transmission resumption request (WiFi Resume) including the stored subscriber type information to the management device 100, and based on the stored network selection policy corresponding to the transferred subscriber type information. The data transmission rate of each access network is restored to the transmission rate of each access network before the data transmission stop state. On the other hand, the terminal device 400 deletes the stored subscriber type information when the set time elapses, and thereafter, a notification message for notifying the resumption of data transmission from the management device 400 as data transmission to the WiFi network resumes ( When a refresh) is received, by transmitting a data transmission resumption request (WiFi Resume) not including subscriber type information to the management device 100, the policy management device 600 in consideration of the change in the network environment over the set time. The transmission rate for each access network can be set based on the updated network selection policy.

Hereinafter, the management device 100 according to an embodiment of the present invention will be described in more detail with reference to FIG. 2.

That is, the management apparatus 100 sets a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information of the terminal device 400, according to the set network selection policy. The control unit 120 selects the partial data divided from the transmission target data according to the subscriber type, and the communication unit 130 divides the selected partial data through one or more heterogeneous networks. Here, the communication unit 130 refers to a communication module for interworking with the first network device 200 using the 3G network and interworking with the second network device 300 using the WiFi network.

The policy setting unit 110 sets a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information of the terminal device 400.

That is, the policy setting unit 110 corresponds to the subscriber type information specified by various criteria including, for example, whether a particular service subscriber (for example, unlimited data service), a service plan, and a heavy user. Receives and stores the network selection policy from the policy management device 600, and based on the stored network selection policy, the first transmission rate for data transmission to the first network device 200 and to the second network device 300 A second transmission rate for data transmission is set. At this time, the management apparatus 100 determines the relative usage ratio of the 3G network and the WiFi network according to the network selection policy determined according to the subscriber type information. For example, the 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10% 3G network 50%: WiFi network 50%, 3G network 100%: WiFi network 0%, 3G network 0%: WiFi network 100% and the like can be variously set.

The control unit 120 selects the partial data divided from the data to be transmitted in order to provide a simultaneous transmission service corresponding to the subscriber type information.

That is, the controller 120 divides the transmission data according to the data transmission rate for each access network in order to transmit the transmission target data transmitted from the external device 500 to the terminal device 400 as the destination. In other words, the management apparatus 100 may transmit the first transmission rate for data transmission to the first network apparatus 200 and the second network apparatus 300 for data transmission according to the subscriber type information of the terminal apparatus 400. Checking the second transmission rate, selecting the first partial data to be transmitted to the first network device 200 of the divided partial data based on the confirmed transmission rate, and the second network device 300 of the remaining partial data The second partial data to be transmitted is selected.

The communication unit 130 transmits the selected partial data classified according to the subscriber type using the corresponding network.

In other words, the communication unit 130 is divided according to the service type and the selected partial data, that is, transmits the first partial data to the first network device 200 located in the 3G network, so that the first network device 200 The one-part data is transmitted to the terminal device 400 as a receiving device. The management apparatus 100 transmits the second partial data to the specific second network apparatus 300 selected based on the connection target network apparatus information, so that the second network apparatus 300 receives the second partial data. Transmission to the terminal device 400 as a device.

Meanwhile, the policy setting unit 110 switches and sets the data transmission rate assigned to the WiFi network when an abnormality occurs in the WiFi network.

That is, the policy setting unit 110, from the 3G network and the WiFi network, if there is an abnormality of the WiFi network, for example, the traffic does not occur for a predetermined time (for example, 1 minute) through the WiFi network, the WiFi from the terminal device 400 The data transmission stop request (WiFi Pause) for the network is received through the first network device 200 located in the 3G network. Accordingly, the policy setting unit 110 may transmit the second transmission rate for data transmission to the second network device 300 located in the WiFi network through the first network device 200 located in the 3G network. By changing and setting the data transmission rate for each access network, the WiFi network is switched to the data transmission stop state. In this case, as the policy setting unit 110 switches the WiFi network to the data transmission stop state, the policy setting unit 110 transmits a response message (WiFi Pause Ack) corresponding to the data transmission stop request (WiFi Pause) to the terminal device 400. The response message will include subscriber type information for the terminal device 400.

Further, the policy setting unit 110 restores the data transmission rate for each access network when the data transmission is resumed in the data transmission stop state for the WiFi network.

That is, the policy setting unit 110 is notified to notify the terminal device 400 of the resumption of data transmission when the data transmission for the WiFi network is resumed within a set time by recovering from the data transmission stop state of the WiFi network. Send a message (Refresh). Thereafter, the policy setting unit 110 receives the network selection policy stored in correspondence with the received subscriber type information when a data transmission resumption request (WiFi Resume) including the provided subscriber type information is received from the terminal device 400. By restoring the data transmission rate for each access network on the basis, the transmission rate for each access network before the data transmission stop state, that is, the first transmission rate for data transmission to the first network device 200 and the second network device 300 to the second network device 300. The second transmission rate for data transmission is restored. Meanwhile, if the data transmission for the WiFi network is resumed after the setting time has elapsed, the policy setting unit 110 requests a data transmission resumption request (WiFi Resume) not including subscriber type information from the terminal device 400. In response to this, the updated network selection policy is obtained from the policy management apparatus 600 in consideration of the change in the network environment over the set time, thereby setting the transmission rate for each access network.

Hereinafter, the terminal device 400 according to an embodiment of the present invention will be described in more detail with reference to FIG. 3.

That is, the terminal device 400 combines the communication unit 410 for receiving the partial data divided from the transmission target data through two or more networks and the control unit 420 for generating the transmission target data by combining the partial data received for each access network. ) Has a configuration including. Here, the communication unit 410 refers to a communication module for interworking with the first network device 200 using the 3G network and interworking with the second network device 300 using the WiFi network. In addition, the control unit 420 has a form mounted in the OS kernel mounted on the terminal device 400, and a series of data transfer service for the data transfer transmission service in response to a request of a specific application embedded or downloaded to the terminal device 400. Will perform the action.

The communication unit 410 receives data dividedly transmitted from the first network device 200 and the second network device 300 according to the data transmission rate for each access network set based on the network selection policy.

That is, the communication unit 410 receives the first partial data from the first network device 200 according to the data transmission rate for each access network based on the network selection policy stored in correspondence with the predetermined subscriber type information, and the second network device. The second partial data is received from 300.

The controller 420 restores data received through the first network device 200 and the second network device 300.

That is, the control unit 420 generates data by combining the first partial data and the second partial data based on the received virtual network access information included in the first partial data and the second partial data, and thus, in the management apparatus 100. The data to be transmitted is restored. In other words, the controller 420 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the partial data. By combining and combining according to the information, the original transmission target data can be generated.

On the other hand, the controller 420 when the abnormality of the WiFi network, the data transmission rate assigned to the WiFi network is switched to be set.

That is, the controller 420 requests to stop data transmission for the WiFi network when there is an abnormality in the WiFi network among the 3G network and the WiFi network, for example, when no traffic occurs for a set time (for example, 1 minute) through the WiFi network. By transferring the WiFi Pause) to the management device 100 through the first network device 200 located in the 3G network, the WiFi network is switched to the data transmission stop state. Accordingly, the controller 420 receives a response message (WiFi Pause Ack) including subscriber type information of the terminal device 400 in response to the data transmission stop request (WiFi Pause) from the management device 100, Subscriber type information included in the response message (WiFi Pause Ack) is stored for a set time.

Further, the controller 420 restores the data transmission rate for each access network when the data transmission is resumed in the data transmission stop state of the WiFi network.

That is, when the data transmission for the WiFi network is resumed within the set time in the data transmission stop state for the WiFi network, the controller 420 sends a notification message (Refresh) for notifying the resumption of data transmission from the management device 400. Will be received. Thereafter, the control unit 420 transmits a data transmission resumption request (WiFi Resume) including the stored subscriber type information to the management device 100, thereby accessing based on the network selection policy stored in correspondence with the transferred subscriber type information. The data transmission rate for each network, that is, the transmission rate for each access network before the data transmission stop state is restored. On the other hand, the control unit 420 deletes the stored subscriber type information when the set time elapses, and thereafter, a notification message for notifying the resumption of data transmission from the management device 400 as data transmission to the WiFi network resumes. ) Is received, by transmitting a data transmission resumption request (WiFi Resume) that does not include subscriber type information to the management device 100, from the policy management device 600 in consideration of the change in the network environment over the set time Based on the updated network selection policy provided, the transmission rate for each access network can be set.

As described above, according to the heterogeneous network-based simultaneous data transmission service system according to the present invention, in a heterogeneous network environment, a set time in a data transmission stop state for a corresponding access network according to an abnormal detection of a specific access network If the data transmission is resumed within the same time, the simultaneous transmission service is resumed by immediately reflecting the network selection policy according to the predetermined subscriber type information, thereby preventing duplicate operations for acquiring the same network selection policy applied before the data transmission stop state. In addition, data traffic can be effectively transferred to improve data service quality and secure network stability.

Hereinafter, a heterogeneous network-based data transmission service method according to an embodiment of the present invention will be described with reference to FIGS. 4 to 6. Here, the above-described configuration shown in Figures 1 to 3 will be described by referring to the reference numerals for convenience of description.

First, a method of operating a heterogeneous network-based simultaneous data transmission service system according to an embodiment of the present invention will be described with reference to FIG. 4.

First, the management apparatus 100 sets a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information of the terminal apparatus 400 (S110-S130).

Preferably, the management apparatus 100 is divided into various types of criteria including, for example, whether a particular service subscriber (for example, unlimited data service), a service plan, and a heavy user. Receiving and storing a corresponding network selection policy from the policy management apparatus 600, and based on the stored network selection policy, the first transmission rate and the second network apparatus 300 for data transmission to the first network apparatus 200. It is to set the second transmission rate for data transmission to the network. At this time, the management apparatus 100 determines the relative usage ratio of the 3G network and the WiFi network according to the network selection policy determined according to the subscriber type information. For example, the 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10% 3G network 50%: WiFi network 50%, 3G network 100%: WiFi network 0%, 3G network 0%: WiFi network 100% and the like can be variously set.

Then, the management apparatus 100 selects the partial data divided from the transmission target data in order to provide the simultaneous transmission service corresponding to the subscriber type information (S140-S150).

Preferably, the management device 100 divides the transmission data according to the data transmission rate for each access network in order to transfer the transmission target data transmitted from the external device 500 to the terminal device 400 as a destination. In other words, the management apparatus 100 may transmit the first transmission rate for data transmission to the first network apparatus 200 and the second network apparatus 300 for data transmission according to the subscriber type information of the terminal apparatus 400. Checking the second transmission rate, selecting the first partial data to be transmitted to the first network device 200 of the divided partial data based on the confirmed transmission rate, and the second network device 300 of the remaining partial data The second partial data to be transmitted is selected.

Then, the management apparatus 100 transmits the selected partial data classified according to the subscriber type using the corresponding network (S160).

Preferably, the management device 100 transmits the selected partial data divided according to the service type, that is, the first partial data to the first network device 200 located in the 3G network, and thus the first network device 200. To transmit the first partial data to the terminal device 400 as a receiving device. The management apparatus 100 transmits the second partial data to the specific second network apparatus 300 selected based on the connection target network apparatus information, so that the second network apparatus 300 receives the second partial data. Transmission to the terminal device 400 as a device.

Next, the terminal device 400 restores data by receiving data transmitted separately from the first network device 200 and the second network device 300 according to the data transmission rate for each access network based on the network selection policy. It is made (S170).

Preferably, the terminal device 400 receives the first partial data from the first network device 200 according to the data transmission rate for each access network based on the stored network selection policy corresponding to the predetermined subscriber type information. Receives the second partial data from the network device 300, and generates the data by combining the first partial data and the second partial data based on the received first partial data and the virtual network access information included in the second partial data. By doing so, the management apparatus 100 restores the transmission target data. In other words, the terminal device 400 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the corresponding partial data. By combining and combining according to the order information, the original transfer target data can be generated.

Meanwhile, when an abnormality of the WiFi network occurs, the terminal device 400 switches the data transmission rate specified for the WiFi network to be set (S180-S190).

Preferably, the terminal device 400 transmits data to the WiFi network when there is an abnormality in the WiFi network among the 3G network and the WiFi network, for example, when no traffic occurs for a set time (for example, 1 minute) through the WiFi network. By transmitting a stop request (WiFi Pause) to the management device 100 through the first network device 200 located in the 3G network, the WiFi network is switched to the data transmission stop state.

In relation to this, the management apparatus 100 switches and sets the data transmission rate specified for the WiFi network (S200-S210).

Preferably, the management device 100 is configured to transmit data to the second network device 300 located in the WiFi network according to a data transmission stop request (WiFi Pause) for the WiFi network received from the terminal device 400. By switching the data transmission rate for each access network so that the transmission rate can be transmitted through the first network device 200 located in the 3G network, the WiFi network is switched to the data transmission stop state. In this case, as the management device 100 switches the WiFi network to the data transmission stop state, the management device 100 transmits a response message (WiFi Pause Ack) corresponding to the data transmission stop request (WiFi Pause) to the terminal device 400. The response message will include subscriber type information for the terminal device 400.

Then, when the data transmission is resumed in the data transmission stop state for the Wi-Fi network to the terminal device 400 to restore the data transmission rate for each access network (S220-S230).

Preferably, the terminal device 400, if the data transmission for the WiFi network is resumed within the set time in the data transmission stop state for the WiFi network, a notification message for notifying the resumption of data transmission from the management device 400 ( Refresh). Thereafter, the terminal device 400 transmits a data transmission resumption request (WiFi Resume) including the stored subscriber type information to the management device 100, and based on the stored network selection policy corresponding to the transferred subscriber type information. The data transmission rate of each access network is restored to the transmission rate of each access network before the data transmission stop state.

In this regard, the management apparatus 100 restores the data transmission rate for each access network (S240).

Preferably, when the management device 100 receives a data transmission resumption request (WiFi Resume) including the provided subscriber type information from the terminal device 400, the management apparatus 100 stores a network selection policy corresponding to the received subscriber type information. By restoring the data transmission rate for each access network based on the transmission rate, the transmission rate for each access network before the data transmission stop state, that is, the first transmission rate and the second network device 300 for data transmission to the first network device 200. The second transmission rate for data transmission to the network is restored. On the other hand, the management device 100 receives a data transmission resume request (WiFi Resume) that does not include subscriber type information from the terminal device 400 when the data transmission for the WiFi network is resumed after the set time has elapsed. Accordingly, the updated network selection policy is obtained from the policy management apparatus 600 in consideration of the change of the network environment over the set time, thereby setting the transmission rate for each access network.

Hereinafter, an operation method of the management apparatus 100 according to an embodiment of the present invention will be described with reference to FIG. 5.

First, the data transmission rate for each access network is set based on the network selection policy stored corresponding to the subscriber type information of the terminal device 400 (S310-S320).

Preferably, the policy setting unit 110 is classified by various criteria including, for example, whether a particular service subscriber (eg, unlimited data service), a service plan, and a heavy user. Receives and stores a network selection policy corresponding to the first from the policy management device 600, and based on the stored network selection policy, the first transmission rate and the second network device 300 for data transmission to the first network device 200. Set a second transmission rate for data transmission to the < RTI ID = 0.0 > At this time, the management apparatus 100 determines the relative usage ratio of the 3G network and the WiFi network according to the network selection policy determined according to the subscriber type information. For example, the 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10% 3G network 50%: WiFi network 50%, 3G network 100%: WiFi network 0%, 3G network 0%: WiFi network 100% and the like can be variously set.

Then, in order to provide the simultaneous transmission service corresponding to the subscriber type information, the partial data divided from the transmission target data are selected (S330).

Preferably, the control unit 120 divides the transmission data according to the data transmission rate for each access network in order to transfer the transmission target data transmitted from the external device 500 to the terminal device 400 as a destination. In other words, the management apparatus 100 may transmit the first transmission rate for data transmission to the first network apparatus 200 and the second network apparatus 300 for data transmission according to the subscriber type information of the terminal apparatus 400. Checking the second transmission rate, selecting the first partial data to be transmitted to the first network device 200 of the divided partial data based on the confirmed transmission rate, and the second network device 300 of the remaining partial data The second partial data to be transmitted is selected.

Then, the selected partial data classified according to the subscriber type are transmitted using the corresponding network (S340).

Preferably, the communication unit 130 is divided according to the service type and selected partial data, that is, the first partial data is transmitted to the first network device 200 located in the 3G network, to the first network device 200 To transmit the first partial data to the terminal device 400 as a receiving device. The management apparatus 100 transmits the second partial data to the specific second network apparatus 300 selected based on the connection target network apparatus information, so that the second network apparatus 300 receives the second partial data. Transmission to the terminal device 400 as a device.

Meanwhile, when an abnormality of the WiFi network occurs in the access network, the data transmission rate assigned to the WiFi network is switched and set (S350-S360).

Preferably, the policy setting unit 110 of the 3G network and the WiFi network, when the abnormality of the WiFi network, for example, the traffic does not occur for a predetermined time (for example, 1 minute) through the WiFi network, the terminal device 400 Receives a data transmission stop request (WiFi Pause) for the WiFi network through the first network device 200 located in the 3G network. Accordingly, the policy setting unit 110 may transmit the second transmission rate for data transmission to the second network device 300 located in the WiFi network through the first network device 200 located in the 3G network. By changing and setting the data transmission rate for each access network, the WiFi network is switched to the data transmission stop state. In this case, as the policy setting unit 110 switches the WiFi network to the data transmission stop state, the policy setting unit 110 transmits a response message (WiFi Pause Ack) corresponding to the data transmission stop request (WiFi Pause) to the terminal device 400. The response message will include subscriber type information for the terminal device 400.

Thereafter, when data transmission is resumed in the data transmission stop state for the WiFi network, the data transmission rate for each access network is restored (S370-S410).

Preferably, the policy setting unit 110 notifies the terminal device 400 of the data transmission resumption when the data transmission for the WiFi network is resumed within a set time through recovery in the data transmission stop state of the WiFi network. Deliver a notification message (Refresh). Thereafter, the policy setting unit 110 receives the network selection policy stored in correspondence with the received subscriber type information when a data transmission resumption request (WiFi Resume) including the provided subscriber type information is received from the terminal device 400. By restoring the data transmission rate for each access network on the basis, the transmission rate for each access network before the data transmission stop state, that is, the first transmission rate for data transmission to the first network device 200 and the second network device 300 to the second network device 300. The second transmission rate for data transmission is restored. Meanwhile, if the data transmission for the WiFi network is resumed after the setting time has elapsed, the policy setting unit 110 requests a data transmission resumption request (WiFi Resume) not including subscriber type information from the terminal device 400. In response to this, the updated network selection policy is obtained from the policy management apparatus 600 in consideration of the change in the network environment over the set time, thereby setting the transmission rate for each access network.

Hereinafter, a method of operating the terminal device 400 according to an embodiment of the present invention will be described with reference to FIG. 6.

First, data dividedly transmitted from the first network device 200 and the second network device 300 is received according to the data transmission rate for each access network set based on the network selection policy (S510).

Preferably, the communication unit 410 receives the first partial data from the first network device 200 according to the data transmission rate for each access network based on the network selection policy stored in correspondence with the predetermined subscriber type information, and the second partial data. The second partial data is received from the network device 300.

Then, the data received through the first network device 200 and the second network device 300 is restored (S520).

Preferably, the control unit 420 generates the data by combining the first partial data and the second partial data based on the received virtual network connection information included in the first partial data and the second partial data, the management apparatus 100 ) Will restore the data to be sent. In other words, the controller 420 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the partial data. By combining and combining according to the information, the original transmission target data can be generated.

Meanwhile, when an abnormality occurs in the WiFi network, the data transmission rate designated for the WiFi network is switched and set (S530-S550).

Preferably, the controller 420 stops data transmission for the WiFi network when there is an abnormality in the WiFi network, for example, when no traffic occurs for a set time (for example, 1 minute) through the WiFi network, among the 3G network and the WiFi network. By transmitting a request (WiFi Pause) to the management device 100 through the first network device 200 located in the 3G network, the WiFi network is switched to the data transmission stop state. Accordingly, the controller 420 receives a response message (WiFi Pause Ack) including subscriber type information of the terminal device 400 in response to the data transmission stop request (WiFi Pause) from the management device 100, Subscriber type information included in the response message (WiFi Pause Ack) is stored for a set time.

Thereafter, when data transmission is resumed in the data transmission stop state for the WiFi network, the data transmission rate for each access network is restored (S560-S590).

Preferably, the controller 420 is a notification message for notifying the resumption of data transmission from the management device 400 when the data transmission for the WiFi network is resumed within the set time in the data transmission stop state for the WiFi network (Refresh) ) Will be received. Thereafter, the control unit 420 transmits a data transmission resumption request (WiFi Resume) including the stored subscriber type information to the management device 100, thereby accessing based on the network selection policy stored in correspondence with the transferred subscriber type information. The data transmission rate for each network, that is, the transmission rate for each access network before the data transmission stop state is restored. On the other hand, the control unit 420 deletes the stored subscriber type information when the set time elapses, and thereafter, a notification message for notifying the resumption of data transmission from the management device 400 as data transmission to the WiFi network resumes. ) Is received, by transmitting a data transmission resumption request (WiFi Resume) that does not include subscriber type information to the management device 100, from the policy management device 600 in consideration of the change in the network environment over the set time Based on the updated network selection policy provided, the transmission rate for each access network can be set.

As described above, according to the heterogeneous network-based simultaneous data transmission service method according to the present invention, in a heterogeneous network environment, a set time in a data transmission stop state for a corresponding access network according to an abnormal detection of a specific access network If the data transmission is resumed within the same time, the simultaneous transmission service is resumed by immediately reflecting the network selection policy according to the predetermined subscriber type information, thereby preventing duplicate operations for acquiring the same network selection policy applied before the data transmission stop state. In addition, data traffic can be effectively transferred to improve data service quality and secure network stability.

Meanwhile, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Alternatively, the storage medium may be integrated into the processor. The processor and the storage medium may be included within an ASIC. The ASIC may be included in the terminal device. In the alternative, the processor and the storage medium may reside as discrete components in a terminal device.

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.

According to the heterogeneous network-based simultaneous data transmission service system and method thereof according to the present invention, in a heterogeneous network environment, data is transmitted within a set time in a state in which data transmission is stopped for a corresponding access network according to an abnormal detection of a specific access network. When this is resumed, the simultaneous transmission service is provided based on the network selection policy corresponding to the predetermined subscriber type information, and thus the market of the applied device, not just the use of the related technology, is exceeded due to the limitation of the existing technology. Or it is an invention with industrial applicability, since not only the possibility of a business is sufficient but also the degree which can be implemented in reality clearly.

100: management device
110: policy setting unit 120: control unit
130:
200: first network device
300: second network device
400: terminal device
410: communication unit 420: control unit
500: External device
600: policy management device

Claims (15)

Set the data transmission rate for each of two or more access networks based on the stored network selection policy corresponding to the subscriber type information of the terminal device, and transmit the data designated to the specific access network when an error occurs in the specific access network among the two or more access networks. A policy setting unit for switching and setting a ratio to the remaining access network;
A control unit selecting partial data divided from the transmission target data based on the set data transmission rate for each access network; And
It includes a communication unit for transmitting the selected partial data divided over two or more networks,
The policy setting unit,
In a state in which data transmission for the specific access network is stopped due to an abnormal occurrence of the specific access network, if data transmission for the specific access network is resumed within a set time, the network selection policy stored in response to the subscriber type information is reflected. A management device, characterized in that for recovering the data transmission rate for each access network. The method of claim 1,
The policy setting unit,
In response to a data transmission stop request for the specific access network received from the terminal device when an error occurs in the specific access network, the subscriber type information is provided to the terminal device.
When the data transmission resume request including the provided subscriber type information is received from the terminal device according to the resumption of data transmission for the specific access network within the set time, the network selection policy stored in response to the received subscriber type information is applied. And a data transfer rate for each access network as a basis. The method of claim 2,
The policy setting unit,
If the subscriber type information is not received from the terminal device within the set time, the management device characterized in that to obtain a new network selection policy from the policy management device for determining the network selection policy to restore the data transmission rate for each access network . A communication unit configured to receive, through two or more networks, partial data divided from data to be transmitted according to data transmission rates for each access network set based on a network selection policy stored in correspondence with predetermined subscriber type information; And
The transmission target data is generated by combining the partial data received for each access network, and when an abnormal occurrence of a specific access network is detected among the two or more access networks, the data transmission rate assigned to the specific access network is transferred to the remaining access networks. A control unit configured to switch the specific access network to a data transmission stop state by setting the switching;
The control unit,
And if data transmission to the specific access network is resumed within a set time, the data transmission rate for each access network is restored according to the stored network selection policy corresponding to the subscriber type information. The method of claim 4, wherein
The control unit,
When an abnormal occurrence of the specific access network is detected, the data transmission stop request for the specific access network is transmitted to a management device, and receives and stores the subscriber type information from the management device.
When the data transmission for the specific access network is resumed within the set time, the data transmission resume request including the stored subscriber type information is transmitted to the management device, and the access is made according to the stored network selection policy corresponding to the subscriber type information. Terminal equipment, characterized in that to restore the data transmission rate for each network. The method of claim 5, wherein
The control unit,
After the set time has elapsed, if data transmission for the specific access network is resumed, policy management for deleting the stored subscriber type information and transmitting the data transmission resumption request to the management device to determine the network selection policy. And a data transmission rate for each access network according to a new network selection policy provided from the device. A partial data receiving step of receiving, by the terminal device, the partial data divided from the transmission target data through two or more networks according to the data transmission rate for each access network based on the stored network selection policy corresponding to the predetermined subscriber type information;
A switching setting step of the management apparatus converting and setting the data transmission rate assigned to the specific access network to the remaining access network when an error occurs in the specific access network among the two or more access networks;
A reset request step of requesting, by the terminal device, to reset the data transmission rate for each access network based on the subscriber type information, when data transmission for the specific access network is resumed within a set time; And
And a transmission rate recovery step of recovering, by the management apparatus, a data transmission rate for each access network based on the network selection policy stored in correspondence with the subscriber type information. A transmission rate setting step of setting a data transmission rate for each of two or more access networks based on the network selection policy stored in correspondence with the subscriber type information of the terminal device;
A switching setting step of switching the specific access network to a data transmission stop state by setting and setting a data transmission rate assigned to the specific access network to the remaining access network when an error occurs in the specific access network among the two or more access networks; And
And a transmission rate recovery step of recovering the data transmission rate for each access network by reflecting the network selection policy stored in response to the subscriber type information when the data transmission for the specific access network is resumed within the set time. How the device works. The method of claim 8,
The conversion setting step,
And providing the subscriber type information to the terminal device in response to a data transmission stop request for the specific access network received from the terminal device when an error occurs in the specific access network. The method of claim 9,
The transmission rate recovery step,
When the data transmission resume request including the provided subscriber type information is received from the terminal device according to the resumption of data transmission for the specific access network within the set time, the network selection policy stored in response to the received subscriber type information is applied. A method of operating a management device, characterized in that for recovering the data transmission rate for each access network on the basis. The method of claim 9,
The transmission rate recovery step,
If the subscriber type information is not received from the terminal device within the set time, the management device characterized in that to obtain a new network selection policy from the policy management device for determining the network selection policy to restore the data transmission rate for each access network Method of operation. A partial data receiving step of receiving, through two or more networks, partial data divided from data to be transmitted according to a data transmission rate for each access network based on a stored network selection policy corresponding to predetermined subscriber type information;
A switching setting step of switching the specific access network to a data transmission stop state by causing a data transmission rate assigned to the specific access network to be set to switch to the remaining access network when an abnormal occurrence of a specific access network is detected among the two or more access networks. ; And
When the data transmission to the particular access network is resumed within the set time, the transmission rate recovery step of recovering the data transmission rate for each access network according to the stored network selection policy corresponding to the subscriber type information, characterized in that it comprises a Method of operation of a terminal device. 13. The method of claim 12,
The conversion setting step,
When an abnormal occurrence of the specific access network is detected, an operation of the terminal apparatus, which transmits a data transmission stop request for the specific access network to a management apparatus, receives and stores the subscriber type information from the management apparatus. Way. The method of claim 13,
The transmission rate recovery step,
When the data transmission for the specific access network is resumed within the set time, a data transmission resumption request including the stored subscriber type information is transmitted to the management device, and according to the stored network selection policy corresponding to the subscriber type information. Operating method of the terminal device characterized in that to restore the data transmission rate for each access network. The method of claim 13,
The transmission rate recovery step,
After the set time has elapsed, if data transmission for the specific access network is resumed, policy management for deleting the stored subscriber type information and transmitting the data transmission resumption request to the management device to determine the network selection policy. And a data transmission rate for each access network is restored according to a new network selection policy provided from the device.

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