KR101492541B1 - 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, the transmitting apparatus selects the partial data segmented from the transmission object data on the basis of the predetermined data transmission rate of the access network, for each access network, and transmits the selected partial data to the receiving apparatus through two or more networks. Wherein the reception apparatus receives specific partial data selected for each connection network corresponding to a specific connection network among the two or more connection networks and determines a difference in data transmission delay for each connection network corresponding to the specific partial data reception, Identification step; A variable setting request step in which the receiving apparatus requests variable setting of a transmission rate for the predetermined access network based on the confirmed data transmission delay difference of the access network; A variable setting step of variably setting a data transmission rate of the predetermined access network based on a difference in data transmission delay of the access network by the transmitting apparatus; And a data retransmission step in which the transmission apparatus selects and transmits partial data segmented from the transmission object data on a network-by-network basis based on a data transmission ratio of the variable access network, The quality of data service can be improved and network stability can be ensured.

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 by dividing data to be transmitted according to a data transmission rate for each access network in a heterogeneous network environment, The present invention relates to a heterogeneous network-based data concurrent transmission service method for variably setting a data transmission rate for each predefined access network based on a predetermined access network, a method of operating a transmitting apparatus and a transmitting apparatus, and a method of operating a receiving apparatus and a receiving 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 an object of the present invention is to provide a data transmission method and a data transmission method in which a transmitting apparatus selects partial data, Wherein the receiving unit receives specific partial data selected for the particular access network among the two or more access networks for each access network and transmits the specific partial data for each access network corresponding to the specific partial data reception Wherein the control unit determines a data transmission delay difference and requests variable setting of a transmission rate for each predefined access network based on the determined data transmission delay difference for each access network, Based on the predetermined connection network Based data concurrent transmission service method of setting a variable data transmission rate of each network based on the data transmission delay difference of each access network.

It is another object of the present invention to provide a data transmission method and a data transmission method in which partial data segmented from data to be transmitted is selected for each access network on the basis of a predetermined data transmission rate for each network, Selecting specific partial data from the selected partial data corresponding to a specific access network among the access networks and transmitting the selected partial data for each access network, checking a data transmission delay difference for each access network corresponding to the specific partial data transmission, The present invention provides a transmission apparatus and a method of operating the transmission apparatus for varying the data transmission rate of each access network based on a difference in data transmission delay between access networks, .

It is another object of the present invention to provide a method and apparatus for receiving partial data segmented from data to be transmitted through two or more networks based on a predetermined data transmission rate for each network, Recognizing specific partial data corresponding to a specific access network among the partial data received for each access network, confirming a data transmission delay difference for each access network with respect to the recognized specific partial data, The present invention provides a receiving apparatus and a method of operating the same in which a predetermined data transmission rate is set for each network based on a difference in data transmission delay between access networks.

According to a first aspect of the present invention, there is provided a transmission apparatus comprising: a control unit for selecting, on a per connection network basis, partial data divided from transmission target data on the basis of a data transmission rate of a predetermined access network; And a communication unit for simultaneously transmitting the provided partial data through at least two access networks, wherein the control unit selects specific partial data from partial data selected corresponding to a specific access network among the at least two access networks, The selected specific partial data is simultaneously transmitted through the remaining access network at the time of transmitting the specific partial data through the access network, and the difference of the data transmission delay for the specific partial data transmitted is checked, And setting the data transmission rate for each access network to be variable based on a data transmission delay difference for each access network.

Preferably, the control unit receives, from the receiving apparatus for each connection network, the specific partial data in which the identification field for measurement of the transmission delay difference is inserted, data for each connection network determined on the basis of the arrival time of each specific partial data And a transmission delay difference is received.

Advantageously, the control unit compares the first transmission delay value and the second transmission delay value when the first network has a first transmission delay value and the second network has a second transmission delay value, And setting the data transmission rate of the predetermined access network to be variable so that the partial data transmission rate of the first network is larger than that of the second network when the first transmission delay value is smaller than the second transmission delay value. do.

According to a second aspect of the present invention, there is provided a receiving apparatus comprising: a communication unit for receiving partial data divided from data to be transmitted through two or more networks based on a data transmission rate of a predetermined access network; And a control unit for combining the partial data received by the access network and generating the transmission object data, wherein the control unit transmits the specific partial data corresponding to the specific access network among the at least two access networks to the specific access network And receives the selected specific partial data simultaneously transmitted through the remaining access networks at the time of transmission of the specific partial data through the specific access network through the remaining access network, And a data transmission rate of the predefined access network is variably set based on the determined transmission delay difference.

Preferably, the control unit identifies a data transmission delay difference for each access network based on arrival time of each connection network for the specific partial data in which an identification field for transmission delay difference measurement is inserted.

Preferably, the control unit requests the transmission apparatus for transmitting partial data segmented from the transmission target data to set a variable transmission rate of the data transmission rate for each predefined access network based on the determined transmission delay difference for each access network .

According to a third aspect of the present invention, there is provided a heterogeneous network-based simultaneous transmission service method in which a transmitting apparatus selects partial data divided from transmission target data on the basis of a predetermined data transmission rate for each access network, To a receiving apparatus via two or more networks; Wherein the reception apparatus receives specific partial data selected for each connection network corresponding to a specific connection network among the two or more connection networks and determines a difference in data transmission delay for each connection network corresponding to the specific partial data reception, Identification step; A variable setting request step in which the receiving apparatus requests variable setting of a transmission rate for the predetermined access network based on the confirmed data transmission delay difference of the access network; A variable setting step of variably setting a data transmission rate of the predetermined access network based on a difference in data transmission delay of the access network by the transmitting apparatus; And a data retransmission step of the transmitting apparatus selecting and transmitting partial data segmented from the transmission object data on a network-by-network basis based on the data transmission ratio of the variable access network.

According to a fourth aspect of the present invention, there is provided a method of operating a transmitting apparatus, the method comprising: a data selecting step of selecting, according to a connection network, partial data divided from data to be transmitted on the basis of a predetermined data transmission rate for each network; A partial data transmission step of selecting specific partial data from partial data selected corresponding to a specific access network among the two or more access networks and transmitting the selected partial data for each access network; A transmission delay difference checking step of confirming a data transmission delay difference by the access network corresponding to the specific partial data transmission; And a variable setting step of variably setting a data transmission rate of the established access network based on the determined difference in data transmission delay for each access network.

Preferably, the partial data transmission step includes: an access network designation step of designating the specific partial data corresponding to the specific access network for each access network; And an identification field inserting step of inserting an identification field for confirming a transmission delay value into specific partial data designated for each access network.

Preferably, the transmission delay difference checking step determines a transmission delay value calculated on the basis of the arrival time of each connection network for the specific partial data in which the identification field is inserted, from the receiving apparatus that receives the partial data, And a difference between data transmission delays for each network is confirmed.

Advantageously, the variable setting step comprises comparing the first transmission delay value and the second transmission delay value when the first network has a first transmission delay value and the second network has a second transmission delay value And varying the data transmission rate of the predetermined access network such that the partial data transmission rate of the first network is larger than that of the second network when the first transmission delay value is smaller than the second transmission delay value .

According to a fifth aspect of the present invention, there is provided a method of operating a receiving apparatus, the method comprising: receiving a partial data segmented from data to be transmitted through two or more networks based on a pre- ; A transmission delay difference checking step of recognizing specific partial data selected in correspondence with a specific access network among partial data received for each access network and confirming a data transmission delay difference for each access network with respect to the recognized specific partial data; And a variable setting step of variably setting a data transmission rate of the predetermined network based on the confirmed transmission delay difference.

Preferably, the transmission delay difference checking step may include checking an identification field inserted in the specific partial data received for each access network, and based on the arrival time of each access network for the specific partial data in which the identification field is inserted And a data transmission delay difference according to the access network is confirmed.

Preferably, in the variable setting step, the transmission apparatus for transmitting the partial data segmented in the transmission target data is set to a variable setting of the data transmission rate for each predefined access network based on the confirmed transmission delay difference for each access network .

According to the heterogeneous network-based data concurrent transmission service method of the present invention, in a heterogeneous network environment, data to be transmitted is divided and transmitted simultaneously according to a data transmission rate of each access network, It is possible to improve the data service quality and secure the network stability by transferring the data traffic of the entire network considering the traffic state of each access network.

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;
3 is a schematic configuration diagram of a terminal device according to an embodiment of the present invention;
4 is a schematic flowchart illustrating an operation method of a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention;
FIG. 5 is a schematic flowchart for explaining the operation of the management apparatus according to the embodiment of the present invention; FIG.
6 is a schematic flowchart for explaining 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.

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) as a transmission apparatus that transmits the virtual network connection information including the connection information and transmits the virtual network connection information to the second partial data corresponding to another part of the two or more partial data, A second network device (300) for receiving the second partial data from the management device (100), a second network device (300) for receiving the first partial data from the first network device Receives the partial data and receives the second partial data from the second network device (300), and the received first partial data and the second partial data contained in the second partial data And a terminal device (400) as a receiving device for combining the first partial data and the second partial data according to the specific virtual network connection information based on the virtual network connection information to generate the data. 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 separate virtual network connection information (e.g., virtual IP) for simultaneous transmission service corresponding to 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 selects partial data segmented from the transmission object data for each connection network based on the data transmission ratio for each connection network previously set.

That is, the management apparatus 100 receives the transmission object data from the external device 500 and transmits the data to the first network device 200 at a first transmission rate for data transmission to the first network device 200, 2 transmission ratio, selects first partial data to be transmitted to the first network device 200 among partial data divided from transmission target data based on the confirmed transmission ratio, And selects the second partial data to be transmitted to the terminal 300.

In addition, the management apparatus 100 inserts an identification field for confirming the transmission delay value on the partial data selected for each access network.

That is, the management apparatus 100 selects specific partial data from partial data selected corresponding to a specific access network, for example, a 3G network, of the 3G network and the WiFi network, and after copying the selected partial data corresponding to the 3G network, The same partial data is assigned to the WiFi network. In addition, the management apparatus 100 inserts an identification field for confirming the transmission delay value in the header of the specific partial data selected for the access network, i.e., the specific partial data selected corresponding to the 3G network and the WiFI network. Here, in the header of the specific partial data, in addition to the above-mentioned identification field, order information and packet attribute information (for example, for signal or traffic) inserted to check the order of the packets are further included. In this regard, in the case of the identification field, unnecessary packet increase can be prevented by inserting the packet into a general traffic packet rather than a separate signal packet prepared for checking a transmission delay value. In the case of the partial data in which the identification field is inserted, it is preferable that the partial data can be arrived at the receiving end, that is, the terminal device 400 every set period.

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

That is, the management apparatus 100 transmits the first partial data to the first network device 200 located in the 3G network and transmits the second partial data to the second network device 300 located in the WiFi network, The first network device 200 transmits the first partial data to the terminal device 400 as the receiving device and the second network device 300 will transmit the second partial data to the terminal device 400 as the receiving device. At this time, the management apparatus 100 concurrently transmits the specific partial data in which the identification field is inserted, together with the first partial data and the second partial data, through the first network device 200 and the second network device 300 .

Further, the management apparatus 100 confirms the data transmission delay difference by the access network corresponding to the partial data transmission.

That is, the management apparatus 100 confirms the transmission state for each of the identification fields inserted in the specific partial data transmitted for each access network, that is, the transmission delay value for each of the 3G network and the WiFi network, The transmission delay difference is confirmed. Here, in the case of the data transmission delay difference according to the access network, the identification field is calculated on the basis of the arrival time of each connection network for the specific partial data inserted therein, And can be confirmed from the terminal device 400. [

In addition, the management apparatus 100 variably sets the data transmission rate for each of the predefined access networks based on the determined data transmission delay difference for each access network.

That is, the management apparatus 100 recognizes a transmission delay state for each of the 3G network and the WiFi network based on the determined data transmission delay difference for each access network. If the 3G network or the WiFi network has a small transmission delay, It is determined that the data transmission efficiency is good, so that the data transmission rate of each 3G network and the WiFi network is set variable so that more partial data can be transmitted through the network. In addition, the management apparatus 100 may determine a transmission order for each access network based on the determined data transmission delay difference for each access network, and may provide the selected partial data according to the determined transmission order.

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.

That is, the terminal device 400 receives the first partial data from the first network device 200 according to the data transmission rate of the access network previously set in the management device 100, and receives the second partial data from the second network device 300, And generates 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 data to be transferred is restored. 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.

In addition, the terminal device 400 identifies the difference in data transmission delays of the access networks with respect to specific partial data in which the identification field received for each access network is inserted, so that the data transmission rate for each access network is variably set.

That is, the terminal device 400 recognizes the identification field inserted in the specific partial data transmitted concurrently through the 3G network and the WiFi network according to the setting period, thereby obtaining the arrival time of each access network for the partial data in which the identification field is inserted And compares each arrival time to check the data transmission delay difference for each access network. In addition, the terminal device 400 determines a data transmission rate per access network preset in the management apparatus 100 based on the determined data transmission delay difference per access network, that is, a variable transmission rate of the data transmission rate between the 3G network and the WiFi network The control unit 100 allows the partial data received from the management apparatus 100 to be transmitted according to the variable transmission rate.

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

That is, the management apparatus 100 includes a controller 110 for selecting and providing partial data segmented from data to be transmitted on a per-connection network based on a predetermined data transmission rate for each access network, And a communication unit 120 for simultaneous transmission through the communication unit. Here, the communication unit 120 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 control unit 110 selects partial data segmented from the transmission object data for each connection network based on the data transmission ratio for each connection network previously set.

That is, the control unit 110 receives the transmission target data from the external device 500 and transmits the first transmission rate for data transmission to the first network device 200 and the second transmission rate for the data transmission to 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 second network device 300 to select the second partial data to be transmitted.

In addition, the control unit 110 inserts an identification field for confirming the transmission delay value on the partial data selected for each access network, and transmits the inserted identification field to the communication unit 120.

That is, the control unit 110 selects specific partial data from partial data selected corresponding to a specific access network, for example, a 3G network, of the 3G network and the WiFi network, copies selected specific partial data corresponding to the 3G network, The same partial data is assigned to the WiFi network. In addition, the control unit 110 inserts an identification field for confirming the transmission delay value in the header of the specific partial data selected in correspondence with the specific partial data selected for the access network, that is, the 3G network and the WiFI network. Here, in the header of the specific partial data, in addition to the above-mentioned identification field, order information and packet attribute information (for example, for signal or traffic) inserted to check the order of the packets are further included. In this regard, in the case of the identification field, unnecessary packet increase can be prevented by inserting the packet into a general traffic packet rather than a separate signal packet prepared for checking a transmission delay value. In the case of the partial data in which the identification field is inserted, it is preferable that the partial data can be arrived at the receiving end, that is, the terminal device 400 every set period.

The communication unit 120 transmits the selected partial data using the corresponding network.

That is, the communication unit 120 transmits the first partial data to the first network device 200 located in the 3G network, and transmits the second partial data to the second network device 300 located in the WiFi network, 1 network device 200 transmits the first partial data to the terminal device 400 as the receiving device and the second network device 300 will transmit the second partial data to the terminal device 400 as the receiving device. At this time, the communication unit 120 concurrently transmits the specific partial data in which the identification field is inserted, together with the first partial data and the second partial data, through the first network device 200 and the second network device 300.

On the other hand, the control unit 110 confirms a data transmission delay difference according to the access network corresponding to the partial data transmission.

That is, the control unit 110 confirms the transmission state for each of the identification fields inserted in the specific partial data transmitted for each access network, i.e., the transmission delay value for each of the 3G network and the WiFi network, The delay difference is confirmed. Here, in the case of the data transmission delay difference according to the access network, the identification field is calculated on the basis of the arrival time of each connection network for the specific partial data inserted therein, And can be confirmed from the terminal device 400. [

On the basis of this, the control unit 110 variably sets the data transmission rate for each of the predefined access networks based on the determined data transmission delay difference for each access network.

That is, the control unit 110 recognizes a transmission delay state for each of the 3G network and the WiFi network based on the determined data transmission delay difference for each access network, and transmits a specific network having a small transmission delay status among the 3G network or the WiFi network as data It is determined that the data transmission rate of the 3G network and the WiFi network is variable so that more partial data can be transmitted through the network by judging that the transmission efficiency is good. The control unit 110 then allows partial data to be transmitted to the terminal device 400 to be transmitted according to a variable transmission rate. In addition, the control unit 110 may determine a transmission order for each access network based on the determined data transmission delay difference for each access network, and may provide the selected partial data according to the determined transmission order.

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

That is, the terminal device 400 includes a communication unit 410 for receiving partial data segmented from transmission target data through two or more networks based on a predetermined data transmission rate for each access network, And a control unit 420 for generating the transmission object data. Here, the communication unit 410 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. In addition, the control unit 420 has a form mounted on an OS kernel mounted on the terminal device 400, and is configured to transmit a series of data for the data moving service in response to a request of a specific application built in or downloaded and loaded in the terminal device 400 Operation.

The communication unit 410 receives data segmentarily transmitted from the first network device 200 and the second network device 300.

That is, the communication unit 410 receives the first partial data from the first network device 200 in accordance with the data transmission rate for each connection network previously set in the management apparatus 100, and receives the second partial data .

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

That is, the control unit 420 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 connection information included in the second partial data, The transmission target data to be transmitted is restored. In other words, the control unit 420 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, and stores them in an order By combining and combining them according to the information, original transfer target data can be generated.

In addition, the control unit 420 determines a data transmission delay difference between the access data and the partial data received for each network, thereby varying the data transmission rate for each access network.

That is, the control unit 420 recognizes the identification field inserted in the specific partial data transmitted concurrently through the 3G network and the WiFi network according to the set period, and confirms the arrival time of each access network for the partial data in which the identification field is inserted And compares each arrival time to check the difference in data transmission delay between access networks. In addition, the control unit 420 sets the data transmission rate per access network preset in the management apparatus 100, that is, the variable transmission rate setting ratio between the 3G network and the WiFi network, based on the confirmed data transmission delay difference So that the partial data received from the management apparatus 100 can be transmitted according to the variable transmission rate.

As described above, according to the heterogeneous network-based data concurrent transmission service system according to the present invention, in the heterogeneous network environment, the transmission target data is divided and transmitted simultaneously according to the data transmission ratio for each access network, By varying the data transmission rate for each access network based on the difference in data transmission delay, it is possible to improve the data service quality and secure the network stability by transferring the data traffic of the entire network considering the traffic state of each access network.

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. 4 to FIG. Here, the configurations shown in FIGS. 1 to 3 will be described with reference to corresponding reference numerals for convenience of explanation.

First, referring to FIG. 4, a description will be made of a method of operating a heterogeneous network-based data concurrent transmission service system according to an embodiment of the present invention.

First, the management apparatus 100 selects partial data segmented from the transmission object data for each connection network based on the predetermined data transmission rate for each access network (S110 - S130).

The management device 100 receives the data to be transmitted from the external device 500 and transmits the data to the first network device 200 and the second network device 300 at a first transmission rate, 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.

Then, the management apparatus 100 inserts an identification field for confirming the transmission delay value on the partial data selected for each connection network (S140).

Preferably, the management apparatus 100 selects specific partial data from the selected partial data corresponding to a specific access network, for example, 3G network among the 3G network and the WiFi network, and after copying the selected specific partial data corresponding to the 3G network , And the specific partial data copied is equally assigned to the WiFi network. In addition, the management apparatus 100 inserts an identification field for confirming the transmission delay value in the header of the specific partial data selected for the access network, i.e., the specific partial data selected corresponding to the 3G network and the WiFI network. Here, in the header of the specific partial data, in addition to the above-mentioned identification field, order information and packet attribute information (for example, for signal or traffic) inserted to check the order of the packets are further included. In this regard, in the case of the identification field, unnecessary packet increase can be prevented by inserting the packet into a general traffic packet rather than a separate signal packet prepared for checking a transmission delay value. In the case of the partial data in which the identification field is inserted, it is preferable that the partial data can be arrived at the receiving end, that is, the terminal device 400 every set period.

Then, the management apparatus 100 transmits the selected partial data using the corresponding network (S150).

Preferably, the management device 100 transmits the first partial data to the first network device 200 located in the 3G network and transmits the second partial data to the second network device 300 located in the WiFi network The first network device 200 transmits the first partial data to the terminal device 400 as the receiving device and the second network device 300 transmits the second partial data to the terminal device 400 as the receiving device will be. At this time, the management apparatus 100 concurrently transmits the specific partial data in which the identification field is inserted, together with the first partial data and the second partial data, through the first network device 200 and the second network device 300 .

Then, the terminal device 400 checks the data transmission delay difference of the access network for the partial data received for each network, thereby allowing the data transmission rate of the predetermined access network to be variably set (S160 - S170).

Preferably, the terminal device 400 recognizes the identification field inserted in the specific partial data transmitted concurrently through the 3G network and the WiFi network according to the set period, Time is checked, and the arrival time of each is compared to check the data transmission delay difference for each access network. In addition, the terminal device 400 determines a data transmission rate per access network preset in the management apparatus 100 based on the determined data transmission delay difference per access network, that is, a variable transmission rate of the data transmission rate between the 3G network and the WiFi network The control unit 100 allows the partial data received from the management apparatus 100 to be transmitted according to the variable transmission rate.

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

Preferably, the terminal device 400 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 connection information included in the second partial data, 100 to recover the transmission target data to be transmitted. 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.

Thereafter, the management apparatus 100 variably sets a data transmission rate for each of the predefined access networks based on the confirmed data transmission delay difference according to the access network (S200).

Preferably, the management apparatus 100 recognizes a transmission delay state for each of the 3G network and the WiFi network on the basis of the determined data transmission delay difference according to the access network, and when the transmission delay state among the 3G network or the WiFi network is small It is determined that the data transmission rate of each 3G network and the WiFi network is variable so that more partial data can be transmitted through the network by judging that the network is a network having good data transmission efficiency do. Through this, the management apparatus 100 allows the partial data to be transmitted to the terminal apparatus 400 to be transmitted according to the variable transmission rate. In addition, the management apparatus 100 may determine a transmission order for each access network based on the determined data transmission delay difference for each access network, and may provide the selected partial data according to the determined transmission order.

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, partial data segmented from the transmission object data is selected for each connection network based on the data transmission ratio for each connection network (S210 - S230).

The control unit 110 receives the data to be transmitted from the external device 500 and transmits the data to the first network device 200 through the first transmission rate for data transmission to the first network device 200, 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 rate, and selects the second partial data The second partial data to be transmitted to the device 300 is selected.

Then, an identification field for confirming the transmission delay value is inserted on the partial data selected for each access network and transmitted to the communication unit 120 (S240-S260).

Preferably, the control unit 110 selects specific partial data in the partial data selected corresponding to the specific access network, e.g. 3G network, of the 3G network and the WiFi network, and after copying the selected partial data corresponding to the 3G network, The same specific part data to be copied is assigned to the WiFi network. In addition, the control unit 110 inserts an identification field for confirming the transmission delay value in the header of the specific partial data selected in correspondence with the specific partial data selected for the access network, that is, the 3G network and the WiFI network. Here, in the header of the specific partial data, in addition to the above-mentioned identification field, order information and packet attribute information (for example, for signal or traffic) inserted to check the order of the packets are further included. In this regard, in the case of the identification field, unnecessary packet increase can be prevented by inserting the packet into a general traffic packet rather than a separate signal packet prepared for checking a transmission delay value. In the case of the partial data in which the identification field is inserted, it is preferable that the partial data can be arrived at the receiving end, that is, the terminal device 400 every set period.

Then, the selected partial data is transmitted using the corresponding network (S270).

Preferably, the communication unit 120 transmits the first partial data to the first network device 200 located in the 3G network, and transmits the second partial data to the second network device 300 located in the WiFi network , The first network device 200 transmits the first partial data to the terminal device 400 as the receiving device and the second network device 300 transmits the second partial data to the terminal device 400 as the receiving device . At this time, the communication unit 120 concurrently transmits the specific partial data in which the identification field is inserted, together with the first partial data and the second partial data, through the first network device 200 and the second network device 300.

Next, the data transmission delay difference for each access network corresponding to the partial data transmission is checked (S280).

Preferably, the controller 110 determines a transmission state for each of the identification fields inserted in the specific partial data transmitted for each access network, that is, a transmission delay value for each of the 3G network and the WiFi network, The difference in data transmission delay is confirmed. Here, in the case of the data transmission delay difference according to the access network, the identification field is calculated on the basis of the arrival time of each connection network for the specific partial data inserted therein, And can be confirmed from the terminal device 400. [

Thereafter, the data transmission rate of the predefined access network is variably set based on the determined data transmission delay difference according to the access network (S290).

Preferably, the control unit 110 recognizes a transmission delay state for each of the 3G network and the WiFi network based on the determined data transmission delay difference for each access network. If the transmission delay state of the 3G network or the WiFi network is small, Is determined as a network having a good data transmission efficiency so that the data transmission rate of each 3G network and the WiFi network is set variable so that more partial data can be transmitted through the corresponding network . The control unit 110 then allows partial data to be transmitted to the terminal device 400 to be transmitted according to a variable transmission rate. In addition, the control unit 110 may determine a transmission order for each access network based on the determined data transmission delay difference for each access network, and may provide the selected partial data according to the determined transmission order.

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

First, data to be divided and transmitted from the management apparatus 100 is received (S310).

Preferably, the communication unit 410 receives the first partial data from the first network device 200 according to the data transmission rate of the access network set in the management apparatus 100, and transmits the second partial data from the second network device 300 to the second Partial data is received.

Then, a difference in data transmission delay between the access network and the partial data received for each network is checked (S320 - S340).

Preferably, the control unit 420 recognizes the identification field inserted in the specific partial data transmitted concurrently through the 3G network and the WiFi network according to the set period, And checks the arrival delay time of each connection network to check the difference in data transmission delay.

Then, a variable setting of a data transmission rate for each connection network is requested (S350)

Preferably, the control unit 420 determines a data transmission rate per access network preset in the management apparatus 100 based on the determined data transmission delay difference per access network, that is, a data transmission rate per access network between the 3G network and the WiFi network By requesting the variable setting, the partial data received from the management apparatus 100 can be transmitted in accordance with the variable transmission rate.

Thereafter, the data received through the first network device 200 and the second network device 300 are restored (S360).

Preferably, the control unit 420 combines 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 to generate data, so that the management apparatus 100 The transmission target data to be transmitted is restored. 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.

As described above, according to the heterogeneous network-based data concurrent transfer service method according to the present invention, in the heterogeneous network environment, the transmission target data is divided and simultaneously transmitted according to the data transmission ratio for each access network, By varying the data transmission rate for each access network based on the difference in data transmission delay, it is possible to improve the data service quality and secure the network stability by transferring the data traffic of the entire network considering the traffic state of each access network.

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 transfer service system and method of the present invention, in a heterogeneous network environment, data to be transmitted are divided and transmitted simultaneously according to a data transmission rate of each access network, Since the data transmission rate for each access network is variably set on the basis of the delay difference, it is possible to overcome the limitations of the existing technology, This is an invention that is industrially applicable because it is practicable.

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

Claims (7)

A control unit for selecting partial data segmented from data to be transmitted on a per connection network basis based on a data transmission rate of each of the predetermined access networks; And
And a communication unit for simultaneously transmitting the provided partial data through at least two access networks,
Wherein,
Selecting specific partial data from partial data selected corresponding to a specific access network among the at least two access networks and transmitting the specific partial data to the specific access network when a time point at which the specific partial data is transmitted through the specific access network And transmits the selected specific partial data through the remaining access network and checks the data transmission delay difference of the access network with respect to the transmitted specific partial data, And the variable transmission rate setting unit sets the data transmission rate for each connection network. The method according to claim 1,
Wherein,
Characterized by receiving a data transmission delay difference per access network based on the arrival time of each of the specific partial data for each network from a receiving apparatus for receiving the specific partial data with the identification field for measuring the transmission delay difference for each access network . The method according to claim 1,
Wherein,
Comparing the first transmission delay value and the second transmission delay value when the first network has a first transmission delay value and the second network has a second transmission delay value,
And setting the data transmission rate of the predetermined access network to be variable so that the partial data transmission rate of the first network is larger than that of the second network when the first transmission delay value is smaller than the second transmission delay value. . A communication unit that receives partial data segmented from the transmission object data through two or more networks based on a data transmission rate set by the transmission network for each connection network previously set; And
And a control unit for combining the partial data received for each access network to generate the transmission target data,
Wherein,
Receiving a specific partial data selected in correspondence with a specific access network among the two or more access networks through the specific access network and transmitting the specific partial data from the transmitting apparatus through the remaining access network Receiving the specific partial data to be transmitted through the remaining access network, checking a data transmission delay difference for each access network based on the specific partial data received for each access network, So that a data transmission rate for each connection network is variably set. 5. The method of claim 4,
Wherein,
And the data transmission delay difference for each connection network is checked based on the arrival time of each connection network for the specific partial data in which the identification field for measurement of the transmission delay difference is inserted. 5. The method of claim 4,
Wherein,
Wherein the transmission apparatus for transmitting partial data segmented from the data to be transmitted requests to set a variable data transmission rate for each predefined access network based on the determined transmission delay difference for each access network. A data transmission step of selecting, on a per connection network, partial data segmented from the transmission object data based on a data transmission rate of the transmission network set by the transmission apparatus and transmitting the selected partial data to the reception apparatus via two or more networks;
Wherein the receiving apparatus receives specific partial data selected in correspondence with a specific access network among the two or more access networks via the specific access network and transmits the remaining partial access data from the transmission apparatus at the time of transmission of the specific partial data through the specific access network A data receiving step of receiving the specific partial data simultaneously transmitted through a network through the remaining access network;
The receiving apparatus checks a data transmission delay difference for each access network based on the specific partial data received for each access network, and determines a variable transmission rate of the predetermined access network based on the confirmed data transmission delay difference A variable setting request step of requesting a setting;
A variable setting step of variably setting a data transmission rate of the predetermined access network based on a difference in data transmission delay of the access network by the transmitting apparatus; And
And a data retransmission step of the transmitting apparatus selecting and transmitting partial data divided from the transmission object data on a network-by-network basis based on the data transmission rate of the variable access network, .

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