KR101574294B1 - Apparatus and method for simultaneously transmitting data in heterogeneous network - Google Patents

Abstract

The present invention discloses a heterogeneous network-based data concurrent transmission service method. That is, a performance checking step of checking a performance difference of each access network based on state information collected by the transmitting apparatus for each access network; Calculating a transmission time required to calculate a transmission time required for transmission of partial data for each access network corresponding to the size of each piece of partial data segmented in the transmission subject data as the verified performance difference value exceeds the threshold; step; Calculating a transmission weight time based on the transmission time required for the access network excluding the specific access network having the minimum value by comparing the transmission time required for each connection network calculated by the transmission apparatus; A network selection step of the transmission device selecting the transmission target network based on whether the transmission time required for the specific access network exceeds the calculated transmission weight time; A data transmission step in which the transmission apparatus selects partial data corresponding to the selected transmission target network and transmits the partial data to the reception apparatus; And a data receiving step in which the receiver combines each partial data received for each access network to recover the data to be transmitted, thereby preventing data from being transmitted to the access network having excellent performance.

Description

TECHNICAL FIELD [0001] The present invention relates to a heterogeneous network-based data concurrent transmission service method and a device applied thereto. [0002]

More particularly, the present invention relates to a method and apparatus for simultaneously transmitting data, and more particularly, to a method and apparatus for simultaneously transmitting data in a heterogeneous network environment, The transmission destination network is selected on the basis of the time required for transmission for each connection network corresponding to the size and the partial data is selectively transmitted through the selected transmission destination network, The present invention relates to a heterogeneous network-based data concurrent transmission service method for efficiently transferring separate data traffic and implementing a simultaneous transmission service, and a method of operating a transmission apparatus and a transmission apparatus.

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 and data rates are becoming cheaper, and at the same time, various large-capacity data services are increasing, the network load ratio of operators is rapidly rising, It is a threat from the side.

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.

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 attain the object of the present invention to provide a transmission apparatus, Calculates a required transmission time required for partial data transmission for each access network in accordance with the size of each piece of partial data divided in the transmission subject data as the total transmission time exceeds the threshold, When the partial data corresponding to the selected transmission target network is selected and transmitted to the receiving device, the receiving device combines the partial data received for each of the access networks, Heterogeneous network-based data concurrent transfer service that restores target data Method is provided to select a transmission target network based on a transmission time required for each connection network and to selectively transmit partial data through the selected transmission destination network so that data is transferred to an access network having excellent performance .

It is another object of the present invention to provide a data transmission method and a data transmission method in which transmission data required for transmission of partial data for each connection network corresponding to the size of each piece of partial data divided in transmission target data, A transmission apparatus for calculating a required time, selecting a transmission target network by assigning priority based on the calculated required transmission time, selecting partial data corresponding to the selected transmission target network and transmitting the selected partial data for each connection network, and And selecting data to be transmitted on the basis of the time required for transmission for each access network and selectively transmitting the partial data through the selected transmission target network so that data is transmitted to the access network having excellent performance .

According to a first aspect of the present invention, there is provided a transmission apparatus for calculating a transmission time required for transmission of partial data for each connection network corresponding to the size of each partial data divided in transmission target data, A distribution rate setting unit for assigning a priority to the transmission target network based on the calculated transmission time; A control unit for selecting and providing partial data corresponding to the selected transmission target network; And a communication unit for transmitting the provided partial data on a per connection network basis.

Preferably, the distribution rate setting unit may check a performance difference of each connection network based on state information collected for each access network, and when the checked performance difference value exceeds a threshold value, And sets a transmission rate for selecting partial data for each access network according to the predefined network selection policy when the determined performance difference value does not exceed the threshold value.

Preferably, the distribution rate setting unit compares the transmission time required for each connection network calculated corresponding to the divided partial data size, and assigns a priority to the transmission destination network to a specific access network having a minimum value .

Preferably, the distribution rate setting unit calculates a transmission weight time based on a transmission time of the access network excluding the specific access network among the access networks, and when the calculated transmission weight time is equal to the transmission time of the specific access network The remaining network is selected as the transmission target network when the calculated transmission weight time exceeds the time required for transmission of the specific access network. do.

According to a second aspect of the present invention, there is provided a heterogeneous network-based data moving service method comprising: a performance checking step of checking a performance difference of each access network based on state information collected by a transmitting apparatus for each access network; Calculating a transmission time required to calculate a transmission time required for transmission of partial data for each access network corresponding to the size of each piece of partial data segmented in the transmission subject data as the verified performance difference value exceeds the threshold; step; A network selecting step of selecting a transmission target network by assigning a priority to the transmitting apparatus based on the calculated required transmission time; A data transmission step in which the transmission apparatus selects partial data corresponding to the selected transmission target network and transmits the partial data to the reception apparatus; And a data receiving step of combining the partial data received by the receiving apparatus for each connection network to recover the transmission target data.

According to a third aspect of the present invention, there is provided a method of operating a transmission apparatus, comprising: a transmission time required for transmission of partial data for each connection network, corresponding to a size of each partial data divided in transmission data, Calculating a necessary transmission time; A network selecting step of assigning a priority to the transmission target network based on the calculated required transmission time; A data selection step of selecting and providing partial data corresponding to the selected transmission target network; And a data transmission step of transmitting the provided partial data for each access network.

Preferably, the transmission time calculation step may include: checking a performance difference for each access network based on status information collected for each access network, and if the verified performance difference value exceeds a threshold value, And calculates the transmission time required for the corresponding access network.

Preferably, the network selection step compares the transmission time required for each connection network calculated corresponding to the divided partial data size, and determines a priority for the transmission destination network selection for a specific access network having a minimum value .

Preferably, the network selecting step calculates a transmission weighted time based on a transmission time of the access network excluding the specific access network among the access networks, and transmits the calculated transmission weighted time to the transmission And selects the remaining access network as the transmission target network when the calculated transmission weight time exceeds the transmission time required for the specific access network, .

According to the heterogeneous network-based data concurrent transfer service method of the present invention, when the performance difference value per access network for data transmission in a heterogeneous network environment exceeds a threshold value, partial data The transmission destination network is selected on the basis of the time required for transmission for each connection network calculated corresponding to the size and the partial data is selectively transmitted through the selected transmission destination network, Thereby efficiently transferring data traffic for each access network, thereby improving data service quality and ensuring network stability.

1 is a schematic configuration diagram of a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention;
2 is a schematic configuration diagram of a management apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic flowchart for explaining a method of operating a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention; FIG.
4 is a schematic flowchart for explaining the operation of the management apparatus according to the embodiment of the present invention;

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

FIG. 1 shows a schematic configuration diagram of a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention.

As shown in FIG. 1, the heterogeneous network-based data concurrent transmission service system according to the present invention divides data into two or more pieces of partial data, adds first partial data corresponding to a part of the two or more partial data, A management apparatus (100) in a transmitting apparatus that transmits the virtual network connection information including the virtual network connection information to the second partial data corresponding to another part of the two or more partial data, A first network device 200 receiving the first partial data, a second network device 300 receiving the second partial data from the management device 100, and a second network device 300 receiving the second partial data from the first network device 200, 1 partial data and receives the second partial data from the second network device 300, and receives 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 concurrent transmission service system according to the present invention has a configuration including an external device 500 for transferring data to be transmitted to the management apparatus 100 and requesting transmission to the terminal apparatus 400.

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

Accordingly, in the present invention, the session is divided in the management apparatus 100 to implement simultaneous link transmission over a plurality of heterogeneous networks for one session. At this time, since the terminal device 400 is connected to each of the plurality of heterogeneous networks, the management apparatus 100 recognizes that one terminal device 400 is linked to each of the simultaneous links through the plurality of heterogeneous networks, It must be managed by the terminal device 400, that is, a single entity. For this purpose, it is inevitably required to allocate and manage additional virtual network connection information (e.g., virtual IP) for the coexistent transmission service in correspondence with the terminal device 400. [

The external device 500 refers to a server device that transmits and receives data to and from the terminal device 400 through the management device 100. The external device 500 may transmit and receive data to and from the terminal device 400 through the management device 100, Portal service, and content providing service.

The heterogeneous networks may be various access networks including, for example, WCDMA, CDMA, WiBro, WLAN (WiFi) and LTE (Long Term Evolution), but in the present embodiment, (Hereinafter referred to as a " WiFi network ") which refers to a first network (hereinafter referred to as a 3G network) and a second wireless network (WiFi)

Accordingly, the first network device 200 refers to a 3G network, that is, a Gateway GPRS Support Node (GGSN) for operating a wireless packet service network. In addition, the second network device 300 includes a WiFi network, And an access point (AP) for operating a short-range wireless network.

In addition, the management apparatus 100 and the terminal apparatus 400 may be a transmission apparatus according to a service flow, i.e., a subject that transmits data using a simultaneous data transmission service, that is, according to an uplink process and a downlink process , Or a receiving device. In this embodiment, for convenience of description, a management apparatus 100 as a transmitting apparatus for providing a data concurrent transmission service to a terminal apparatus 400 in a heterogeneous network environment is assumed, and the management apparatus 100 and the data transmission / Will be described below with reference to a terminal device 400 as a receiving apparatus that performs the above-described operations.

The management apparatus 100 confirms the performance difference for each access network based on the status information collected for each access network.

More specifically, the management apparatus 100 receives status information on data reception by the access network from the terminal device 400, that is, 3G latency and 3G throughput of the 3G network, and data of the WiFi network (WiFi latency) and data transmission rate (WiFi throughput), and confirms the performance difference (K) between the 3G network and the WiFi network through Equation (1) below.

[Equation 1]

K = (3G latency + 1 / 3G throughput) - (WiFi latency + 1 / WiFi throughput)

In addition, the management apparatus 100 calculates the transmission time required for partial data transmission for each access network.

More specifically, when the absolute value of the performance difference (K) between the 3G network and the WiFi network confirmed through the above-described [Expression 1] exceeds the threshold value, the management apparatus 100 transmits the partial data (3G TT) required for partial data transmission in the 3G network and the transmission time (WiFi TT) required for partial data transmission in the WiFi network through [Expression 2] and [Expression 3] .

[Equation 2]

3G TT (Transmission Time) = {3G latency + size of partial data (amount of data) / 3G throughput}

[Equation 3]

WiFi TT (Transmission Time) = {WiFi latency + size of data (amount of data) / WiFi throughput}

Furthermore, the management apparatus 100 assigns a priority to the transmission target time based on the calculated required transmission time to select a transmission target network.

More specifically, when the performance difference K determined through Equation 1 exceeds a threshold value (K < 0), the management apparatus 100 performs better than the WiFi network performance On the other hand, if the determined performance difference (K) exceeds the threshold value (K > 0), it is determined that the performance of the WiFi network is superior to that of 3G network performance. The priority of the transmission target network selection is given.

For example, when the performance of the WiFi network is superior to that of the 3G network, priority is given to the WiFi network for selecting the transmission target network. To this end, the management apparatus 100 calculates the transmission weight time (3G WTT) of the 3G network through Equation (4) based on the transmission time (3G TT) of the 3G network, which is lower in performance than the WiFi network, When the calculated transmission weight time (3G WTT) is less than the transmission time (WiFi TT) of the WiFi network (WiFi TT <3G WTT), the WiFi network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (3G WTT) exceeds the transmission time (WiFi TT) of the WiFi network (WiFi TT> 3G WTT), the management apparatus 100 changes the priority given to the 3G network It is selected as the transmission target network.

[Equation 4]

3G Weighted Transmission Time (WTT) = α * 3G WTT, (0 <α <1)

On the other hand, if the performance of the 3G network is superior to the performance of the WiFi network, the 3G network is given priority over the transmission target network selection. To this end, the management apparatus 100 calculates a transmission weight time (WiFi WTT) of the WiFi network through the above-mentioned [Expression 4] based on the transmission time (WiFi TT) of the WiFi network, If the calculated transmission weight time (WiFi WTT) is less than 3G TT (3G TT <WiFi WTT), the 3G network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (WiFi WTT) exceeds the transmission time (3G TT) of the WiFi network (3G TT> WiFi WTT), the management apparatus 100 changes the priority given to the WiFi network It is selected as the transmission target network.

On the other hand, when the absolute value of the performance difference for each access network does not exceed the threshold, the management apparatus 100 sets a transmission rate for selecting partial data for each access network according to the predefined network selection policy.

More specifically, when the absolute value of the performance difference (K) determined through the above-described [Expression 1] does not exceed the threshold, the management apparatus 100 transmits the data transmission rate of the 3G network and the WiFi network And the data transmission rate between the 3G network and the WiFi network is set based on the confirmed data transmission rate for each network, so that the partial data segmented from the transmission object data can be selected for each access network according to the transmission ratio .

In addition, the management apparatus 100 selects partial data corresponding to the selected transmission target network as described above.

More specifically, the management apparatus 100 receives the transmission object data from the external device 500, and transmits the partial data to the first network device 100 so that each partial data, which is divided in the transmission object data, Selects the first partial data to be transmitted to the second network device (200), and selects the second partial data to be transmitted to the second network device (300) among the remaining partial data.

On the other hand, when the absolute value of the performance difference for each access network does not exceed the threshold value, the management apparatus 100 selects the partial data segmented from the transmission object data for each network based on the set data transmission rate for each network.

More specifically, the management apparatus 100 receives the transmission target data from the external apparatus 500 and transmits the first transmission rate for data transmission to the first network device 200 and the data transmission to the second network device 300 And selects the first partial data to be transmitted to the first network device 200 among the partial data divided from the transmission target data based on the confirmed transmission ratio and selects the second partial data for the second partial transmission The second partial data to be transmitted to the network device 300 is selected.

Further, the management apparatus 100 transmits the selected partial data using the corresponding network.

More specifically, the management apparatus 100 transmits the selected partial data corresponding to the transmission target network, that is, the first partial data to the first network device 200 located in the 3G network, To transmit the first partial data to the terminal apparatus 400 as a receiving apparatus. Then, the management apparatus 100 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and causes the second network device 300 to receive the second partial data To the terminal device 400 as a device.

The terminal device 400 receives data divided and transmitted from the first network device 200 and the second network device 300 and restores the data.

More specifically, the terminal device 400 receives the first partial data from the first network device 200 and receives the second partial data from the second network device 300, and the received first partial data and the second partial data The first partial data and the second partial data are combined based on the virtual network connection information included in the partial data to generate data, thereby restoring the transmission target data to be transmitted by the management apparatus 100. [ That is, the terminal device 400 recognizes the first partial data and the second partial data having the same virtual network connection information based on the virtual network connection information included in the received partial data, By combining and combining them according to the information, original transfer target data can be generated.

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

More specifically, the management apparatus 100 includes a distribution rate setting unit 110 for assigning a priority to a transmission target network based on the transmission time required for each connection network, and selecting the transmission destination network; A control unit (120) for selecting and providing partial data corresponding to the selected transmission target network; And a communication unit 130 for dividing and transmitting the selected partial data through the heterogeneous network. Here, the communication unit 130 refers to a communication module for interfacing with the first network device 200 using the 3G network and interworking with the second network device 300 using the WiFi network.

The distribution rate setting unit 110 checks the performance difference of each access network based on the state information collected for each access network.

More specifically, the distribution rate setting unit 110 receives status information on data reception by the access network from the terminal device 400, that is, the 3G latency and 3G throughput of the 3G network and the throughput of the WiFi network. (WiFi latency) and data transmission rate (WiFi throughput), and confirms the performance difference (K) between the 3G network and the WiFi network through Equation (1) below.

[Equation 1]

K = (3G latency + 1 / 3G throughput) - (WiFi latency + 1 / WiFi throughput)

In addition, the distribution rate setting unit 110 calculates the transmission time required for partial data transmission for each access network.

More specifically, when the absolute value of the performance difference (K) between the 3G network and the WiFi network confirmed through the above-mentioned [Expression 1] exceeds the threshold value, the distribution rate setting unit 110 sets the divided parts (3G TT) required for partial data transmission in the 3G network through [Expression 2] and [Expression 3] corresponding to the size of the data and the transmission time required for partial data transmission in the WiFi network (WiFi TT ).

[Equation 2]

3G TT (Transmission Time) = {3G latency + size of partial data (amount of data) / 3G throughput}

[Equation 3]

WiFi TT (Transmission Time) = {WiFi latency + size of data (amount of data) / WiFi throughput}

On the basis of this, the distribution rate setting unit 110 assigns a priority to the transmission target network based on the calculated required transmission time to select a transmission target network.

More specifically, when the performance difference K determined through Equation 1 exceeds a threshold value (K < 0), the allocation rate setting unit 110 determines that the 3G network performance is superior to the WiFi network performance On the other hand, if the determined performance difference (K) exceeds a threshold value (K > 0), it is determined that the performance of the WiFi network is superior to that of the 3G network. The priority of the transmission target network is given.

For example, when the performance of the WiFi network is superior to that of the 3G network, priority is given to the WiFi network for selecting the transmission target network. For this, the distribution rate setting unit 110 calculates the transmission weighted time (3G WTT) of the 3G network based on the transmission time (3G TT) of the 3G network whose performance is lower than that of the WiFi network , And the calculated transmission weight time (3G WTT) is less than the transmission time (WiFi TT) of the WiFi network (WiFi TT <3G WTT), the WiFi network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (3G WTT) exceeds the transmission time (WiFi TT) of the WiFi network (WiFi TT> 3G WTT), the distribution rate setting unit 110 changes the priority given to the 3G network As a transmission target network.

[Equation 4]

3G Weighted Transmission Time (WTT) = α * 3G WTT, (0 <α <1)

On the other hand, if the performance of the 3G network is superior to the performance of the WiFi network, the 3G network is given priority over the transmission target network selection. For this, the distribution rate setting unit 110 calculates the transmission weight time (WiFi WTT) of the WiFi network through the above-described [Expression 4] based on the transmission time (WiFi TT) of the WiFi network whose performance is lower than that of the 3G network , The 3G network is selected as the transmission target network when the calculated transmission weight time (WiFi WTT) is less than the transmission time (3G TT) of the 3G network (3G TT <WiFi WTT). On the other hand, when the calculated transmission weight time (WiFi WTT) exceeds the transmission time (3G TT) of the WiFi network (3G TT> WiFi WTT), the distribution rate setting unit 110 changes the priority assigned to the WiFi network As a transmission target network.

On the other hand, if the absolute value of the performance difference for each access network does not exceed the threshold value, the distribution rate setting unit 110 sets a transmission rate for selecting partial data for each access network according to the predefined network selection policy.

More specifically, when the absolute value of the performance difference (K) determined through the above-mentioned [Expression 1] does not exceed the threshold value, the distribution rate setting unit 110 sets the data transmission rate of the 3G network and the WiFi The data transmission rate of the network is confirmed and the data transmission rate between the 3G network and the WiFi network is set based on the confirmed data transmission rate for each network so that the partial data segmented from the transmission object data is selected for each access network according to the transmission ratio .

The control unit 120 selects partial data corresponding to the selected transmission target network as described above.

The control unit 120 receives the data to be transmitted from the external device 500 and transmits the partial data to the first network device 200, and selects the second partial data to be transmitted to the second network device 300 among the remaining partial data.

On the other hand, when the absolute value of the performance difference for each access network does not exceed the threshold value, the controller 120 selects partial data segmented from the transmission object data for each network based on the data transmission ratio for each network.

More specifically, the control unit 120 checks a first transmission rate for data transmission to the first network device 200 and a second transmission rate for data transmission to the second network device 300, Selects the first partial data to be transmitted to the first network device 200 among the partial data divided from the transmission target data and selects the second partial data to be transmitted to the second network device 300 among the remaining partial data .

The communication unit 130 transmits the selected partial data using the corresponding network.

More specifically, the communication unit 130 transmits the selected partial data corresponding to the transmission target network, that is, the first partial data to the first network device 200 located in the 3G network, and transmits the partial data to the first network device 200 To transmit the first partial data to the terminal apparatus 400 as a receiving apparatus. Then, the communication unit 130 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and causes the second network device 300 to transmit the second partial data to the receiving device To the terminal device 400 as a terminal device.

As described above, according to the heterogeneous network-based simultaneous data transmission service system according to the present invention, when the performance difference value per access network for data transmission in a heterogeneous network environment exceeds a threshold value, By selecting a transmission target network based on transmission time required for each connection network calculated differently corresponding to the divided partial data size in the transmission network and selectively transmitting partial data through the selected transmission destination network, It is possible to prevent the data from being transmitted and efficiently transfer the data traffic for each connection network, thereby improving the data service quality and securing the network stability.

Hereinafter, a heterogeneous network-based data concurrent transmission service method according to an embodiment of the present invention will be described with reference to FIG. 3 and FIG. Here, the configurations shown in FIGS. 1 and 2 will be described with reference to corresponding reference numerals for convenience of explanation.

3, a method of operating a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention will be described.

First, the terminal device 400 provides the management apparatus 100 with status information according to data reception for each connection network (S110).

Preferably, the terminal device 400 transmits status information on data reception by the access network, that is, the 3G latency and 3G throughput of the 3G network, and the data delay amount of the WiFi network (WiFi latency) and a data transmission rate (WiFi throughput) to the management apparatus 100.

Then, the management apparatus 100 confirms the performance difference for each access network based on the status information collected for each access network (S120).

The management apparatus 100 may transmit status information on data reception by the access network from the terminal device 400, that is, the 3G latency and the 3G throughput of the 3G network, and the data of the WiFi network (WiFi latency) and data transmission rate (WiFi throughput), and confirms the performance difference (K) between the 3G network and the WiFi network through Equation (1) below.

[Equation 1]

K = (3G latency + 1 / 3G throughput) - (WiFi latency + 1 / WiFi throughput)

Then, the management apparatus 100 calculates the transmission time required for partial data transmission for each connection network (S130-S140).

Preferably, when the absolute value of the performance difference (K) between the 3G network and the WiFi network confirmed through the above-described [Expression 1] exceeds the threshold value, the management apparatus 100 preferably transmits the partial data (3G TT) required for partial data transmission in the 3G network and the transmission time (WiFi TT) required for partial data transmission in the WiFi network through [Expression 2] and [Expression 3] .

[Equation 2]

3G TT (Transmission Time) = {3G latency + size of partial data (amount of data) / 3G throughput}

[Equation 3]

WiFi TT (Transmission Time) = {WiFi latency + size of data (amount of data) / WiFi throughput}

Next, the management apparatus 100 assigns a priority order based on the calculated required transmission time to select a transmission target network (S150 - S160).

Preferably, the management apparatus 100 has a performance superior to the WiFi network performance when the performance difference K determined through Equation 1 exceeds a threshold value (K < 0) On the other hand, if the determined performance difference (K) exceeds the threshold value (K > 0), it is determined that the performance of the WiFi network is superior to that of 3G network performance. The priority of the transmission target network selection is given.

For example, when the performance of the WiFi network is superior to that of the 3G network, priority is given to the WiFi network for selecting the transmission target network. To this end, the management apparatus 100 calculates the transmission weight time (3G WTT) of the 3G network through Equation (4) based on the transmission time (3G TT) of the 3G network, which is lower in performance than the WiFi network, When the calculated transmission weight time (3G WTT) is less than the transmission time (WiFi TT) of the WiFi network (WiFi TT <3G WTT), the WiFi network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (3G WTT) exceeds the transmission time (WiFi TT) of the WiFi network (WiFi TT> 3G WTT), the management apparatus 100 changes the priority given to the 3G network It is selected as the transmission target network.

[Equation 4]

3G Weighted Transmission Time (WTT) = α * 3G WTT, (0 <α <1)

On the other hand, if the performance of the 3G network is superior to the performance of the WiFi network, the 3G network is given priority over the transmission target network selection. To this end, the management apparatus 100 calculates a transmission weight time (WiFi WTT) of the WiFi network through the above-mentioned [Expression 4] based on the transmission time (WiFi TT) of the WiFi network, If the calculated transmission weight time (WiFi WTT) is less than 3G TT (3G TT <WiFi WTT), the 3G network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (WiFi WTT) exceeds the transmission time (3G TT) of the WiFi network (3G TT> WiFi WTT), the management apparatus 100 changes the priority given to the WiFi network It is selected as the transmission target network.

Then, the management apparatus 100 selects partial data corresponding to the selected transmission target network as described above (S170).

Preferably, the management apparatus 100 receives the transmission object data from the external device 500, and transmits the partial data to the first network device 100 so that each partial data, which is divided in the transmission object data, Selects the first partial data to be transmitted to the second network device (200), and selects the second partial data to be transmitted to the second network device (300) among the remaining partial data.

Next, the management apparatus 100 transmits the selected partial data using the corresponding network (S180).

More specifically, the management apparatus 100 transmits the selected partial data corresponding to the transmission target network, that is, the first partial data to the first network device 200 located in the 3G network, To transmit the first partial data to the terminal apparatus 400 as a receiving apparatus. Then, the management apparatus 100 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and causes the second network device 300 to receive the second partial data To the terminal device 400 as a device.

After that, the terminal device 400 receives data divided and transmitted from the first network device 200 and the second network device 300 and restores the data (S190).

Preferably, the terminal device 400 receives the first partial data from the first network device 200 and receives the second partial data from the second network device 300, and the received first partial data and the second partial data The first partial data and the second partial data are combined based on the virtual network connection information included in the partial data to generate data, thereby restoring the transmission target data to be transmitted by the management apparatus 100. [ That is, the terminal device 400 recognizes the first partial data and the second partial data having the same virtual network connection information based on the virtual network connection information included in the received partial data, By combining and combining them according to the information, original transfer target data can be generated.

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

First, a performance difference for each access network is checked based on state information collected for each access network (S210 - S220).

Preferably, the distribution rate setting unit 110 receives status information on data reception by the access network from the terminal device 400, that is, 3G latency and 3G throughput of the 3G network, (WiFi latency) and data transmission rate (WiFi throughput), and confirms the performance difference (K) between the 3G network and the WiFi network through Equation (1) below.

[Equation 1]

K = (3G latency + 1 / 3G throughput) - (WiFi latency + 1 / WiFi throughput)

Then, the transmission time required for partial data transmission for each access network is calculated (S230-S240).

Preferably, when the absolute value of the performance difference (K) between the 3G network and the WiFi network confirmed through the above-mentioned [Expression 1] exceeds the threshold value, the distribution rate setting unit 110 sets the distribution rate (3G TT) required for partial data transmission in the 3G network through [Expression 2] and [Expression 3] corresponding to the size of the data and the transmission time required for partial data transmission in the WiFi network (WiFi TT ).

[Equation 2]

3G TT (Transmission Time) = {3G latency + size of partial data (amount of data) / 3G throughput}

[Equation 3]

WiFi TT (Transmission Time) = {WiFi latency + size of data (amount of data) / WiFi throughput}

Then, priority is assigned based on the calculated required transmission time to select a transmission target network (S250 - S270).

Preferably, the distribution rate setting unit 110 determines that the performance of the 3G network is superior to the performance of the WiFi network when the performance difference K determined through Equation 1 exceeds a threshold (K < 0) On the other hand, if the determined performance difference (K) exceeds a threshold value (K > 0), it is determined that the performance of the WiFi network is superior to that of the 3G network. The priority of the transmission target network is given.

For example, when the performance of the WiFi network is superior to that of the 3G network, priority is given to the WiFi network for selecting the transmission target network. For this, the distribution rate setting unit 110 calculates the transmission weighted time (3G WTT) of the 3G network based on the transmission time (3G TT) of the 3G network whose performance is lower than that of the WiFi network , And the calculated transmission weight time (3G WTT) is less than the transmission time (WiFi TT) of the WiFi network (WiFi TT <3G WTT), the WiFi network is selected as the transmission target network. On the other hand, when the calculated transmission weight time (3G WTT) exceeds the transmission time (WiFi TT) of the WiFi network (WiFi TT> 3G WTT), the distribution rate setting unit 110 changes the priority given to the 3G network As a transmission target network.

[Equation 4]

3G Weighted Transmission Time (WTT) = α * 3G WTT, (0 <α <1)

On the other hand, if the performance of the 3G network is superior to the performance of the WiFi network, the 3G network is given priority over the transmission target network selection. For this, the distribution rate setting unit 110 calculates the transmission weight time (WiFi WTT) of the WiFi network through the above-described [Expression 4] based on the transmission time (WiFi TT) of the WiFi network whose performance is lower than that of the 3G network , The 3G network is selected as the transmission target network when the calculated transmission weight time (WiFi WTT) is less than the transmission time (3G TT) of the 3G network (3G TT <WiFi WTT). On the other hand, when the calculated transmission weight time (WiFi WTT) exceeds the transmission time (3G TT) of the WiFi network (3G TT> WiFi WTT), the distribution rate setting unit 110 changes the priority assigned to the WiFi network As a transmission target network.

If the absolute value of the performance difference for each access network does not exceed the threshold value, a transmission rate for selecting partial data for each access network is set according to the predefined network selection policy (S280).

Preferably, when the absolute value of the performance difference (K) determined through Equation (1) does not exceed the threshold value, the distribution rate setting unit 110 sets the data rate of the 3G network and the WiFi The data transmission rate of the network is confirmed and the data transmission rate between the 3G network and the WiFi network is set based on the confirmed data transmission rate for each network so that the partial data segmented from the transmission object data is selected for each access network according to the transmission ratio .

Further, partial data is selected for each access network (S290).

The control unit 120 receives the data to be transmitted from the external device 500 and transmits the partial data to the first network device 200, and selects the second partial data to be transmitted to the second network device 300 among the remaining partial data. On the other hand, when the absolute value of the performance difference for each access network does not exceed the threshold value, the first transmission rate for data transmission to the first network device 200 and the second transmission rate for the second network device 300 , Selects the first partial data to be transmitted to the first network device 200 among the divided partial data in the transmission target data based on the confirmed transmission rate, and selects the first partial data to be transmitted to the first network device 200 And selects the second partial data to be transmitted to the second network device 300 among the partial data.

Thereafter, the selected partial data is transmitted using the corresponding network (S300).

Preferably, the communication unit 130 transmits the selected partial data corresponding to the transmission target network, that is, the first partial data 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 apparatus 400 as a receiving apparatus. Then, the communication unit 130 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and causes the second network device 300 to transmit the second partial data to the receiving device To the terminal device 400 as a terminal device.

As described above, according to the heterogeneous network-based simultaneous data transmission service method according to the present invention, when the performance difference value per access network for data transmission in a heterogeneous network environment exceeds a threshold value, By selecting a transmission target network based on transmission time required for each connection network calculated differently corresponding to the divided partial data size in the transmission network and selectively transmitting partial data through the selected transmission destination network, It is possible to prevent the data from being transmitted and efficiently transfer the data traffic for each connection network, thereby improving the data service quality and securing the 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. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a 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. Alternatively, the processor and the storage medium may be included as separate components within the 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 data concurrent transmission service system and method of the present invention, when the performance difference value per access network for data transmission in a heterogeneous network environment exceeds a threshold value, The transmission destination network is selected on the basis of the transmission time required for each connection network calculated corresponding to the partial data size and the partial data is selectively transmitted through the selected transmission destination network. It is not only the use of the related technology but also the possibility of commercialization or operation of the applied device as well as the possibility of being industrially applicable because it is practically possible to carry out the invention.

100: management device
110: distribution rate setting unit 120:
130:
200: first network device
300: second network device
400: terminal device
500: External device

Claims (7)

The transmission time of each access network required for partial data transmission is calculated in each of the two or more access networks by transmitting two or more partial data divided from the transmission target data through two or more access networks, A distribution rate setting unit for selecting a specific access network having a minimum transmission time as a transmission target network for partial data transmission;
A control unit for selecting and providing partial data corresponding to the specific access network; And
And a communication unit for transmitting the provided partial data through the specific access network. The method according to claim 1,
Wherein the distribution rate setting unit comprises:
If the performance difference of each connection network checked based on the status information collected for each of the two or more connection networks does not exceed the threshold, a transmission rate for selecting partial data for each connection network is set according to the predefined network selection policy And a transmission unit for transmitting the transmission data. The method according to claim 1,
Wherein the distribution rate setting unit comprises:
Calculating a transmission weight time of the remaining access network based on a transmission time of the other access networks except for the specific access network among the two or more access networks and calculating a transmission weight time of the remaining access network and a transmission weight time of the remaining access network And selects a transmission target network for transmitting the partial data. The method of claim 3,
Wherein the distribution rate setting unit comprises:
If the transmission weight time of the remaining access network is less than the transmission time required for the specific access network, selects the remaining access network as a transmission target network,
And selects the specific access network as the transmission target network when the transmission weight time of the remaining access network exceeds the transmission time of the specific access network. Calculating transmission time required for transmission of partial data in each of the two or more access networks by transmitting two or more partial data divided from transmission target data through two or more access networks;
Selecting a specific access network having a minimum transmission time as a transmission target network for partial data transmission by comparing transmission time required for each access network;
A data selection step of selecting and providing partial data corresponding to the specific access network; And
And a data transmission step of transmitting the provided partial data through the specific access network. 6. The method of claim 5,
The network selection step includes:
Calculating a transmission weight time of the remaining access network based on a transmission time of the other access networks except for the specific access network among the two or more access networks and calculating a transmission weight time of the remaining access network and a transmission weight time of the remaining access network And selects a transmission target network for transmitting the partial data. The method according to claim 6,
The network selection step includes:
Selects the remaining access network as a transmission target network when the transmission weight time of the remaining access network is less than the transmission required time of the specific access network and selects the transmission access time of the remaining access network as a transmission time When the number of the access networks exceeds a predetermined value, selects the specific access network as the transmission target network.

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