KR101335014B1 - Apparatus for simultaneously transmitting data in heterogeneous network - Google Patents

Abstract

The present invention can ensure and improve the transmission performance of the simultaneous transmission service by quickly checking the status of each network and reducing or stopping the transmission rate to an abnormally determined network in an environment providing a heterogeneous network based simultaneous transmission service. Disclosed are a heterogeneous network-based simultaneous data transmission apparatus and method. In the heterogeneous network-based data transmission apparatus of the present invention, the partial data divided from the data to be transmitted is selected for each of the two or more access networks based on a data transfer rate of two or more access networks, and each part selected for each of the two or more access networks. The network apparatus transmits data to a receiving apparatus through a corresponding access network, and receives network state related information based on at least two partial data having neighboring sequence information among partial data transmitted through a specific access network among the two or more access networks. And determining whether to adjust the data transmission rate to the specific access network based on the reception state information corresponding to the reception state of the network state related information.

Description

[0001] APPARATUS FOR SIMULTANEOUSLY TRANSMITTING DATA IN HETEROGENEOUS NETWORK [0002]

The present invention relates to a data simultaneous transmission service scheme. More particularly, the present invention relates to a method of simultaneously transmitting data from a receiving side apparatus in an environment providing a simultaneous transmission service for transmitting / receiving partial data obtained by dividing data using a plurality of heterogeneous networks. Simultaneous transmission of heterogeneous network-based data that can guarantee and improve the transmission performance of the simultaneous transmission service by quickly checking the status of each network using report information related to the network status and reducing or stopping the transmission rate to an abnormally determined network. An apparatus and method are provided.

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.

In the heterogeneous network environment in which a plurality of networks are mixed, a current method of using a data service through a terminal device is a network selection method by directly changing a terminal device user, and a method in which controllability of a provider is excluded This is a passive approach 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, in a heterogeneous network environment where a plurality of networks are mixed, a new service scheme for efficiently selecting a network of a terminal device according to the state of the network and efficiently using the selected network is desired.

The present invention was created in view of the above circumstances, and an object of the present invention is to select partial data divided from data to be transmitted for each of the two or more access networks based on a data transmission rate of two or more access networks, Each partial data selected for each of the two or more access networks is transmitted to a receiving apparatus through a corresponding access network, and the two or more partial data having neighboring order information among the partial data transmitted through a specific access network among the two or more access networks are transmitted. Heterogeneous network-based data for receiving based network state related information from the receiving device and determining whether to adjust the data transmission rate to the specific access network based on the received state information corresponding to the received state of the network state related information. Simultaneous transmission device and By providing a method, by quickly checking the status of each network using the report information related to the network status returned from the receiving device in the environment providing simultaneous transmission service, by reducing or stopping the transmission rate to the network that is determined to be abnormal, To ensure and improve the transmission performance of the simultaneous transmission service.

The heterogeneous network-based data simultaneous transmission device according to the first aspect of the present invention for achieving the above object, selects the partial data divided from the data to be transmitted for each of the two or more access networks based on the data transmission rate of two or more access networks. A partial data selection unit; A communication unit which transmits each partial data selected for each of the two or more access networks to a receiving device through a corresponding access network; And network state related information based on at least two partial data having neighboring sequence information among partial data transmitted through a specific access network of the two or more access networks, from the receiving apparatus, and receiving the network state related information. And a transmission control unit for determining whether to adjust the data transmission rate to the specific access network based on the corresponding reception state information.

Preferably, the transmission control unit, based on the reception state information corresponding to the specific access network, the network state related information for the specific two or more pieces of the partial data having the neighboring order information passes a predetermined reference time. When the number of times of receiving or not receiving the network state related information occurs more than a specific reference number of times, it may be determined that the state of the specific access network is abnormal or more to adjust the data transmission rate.

Preferably, the transmission control unit may determine the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of the two or more access networks.

Preferably, the network state related information is partial data in which at least two partial data having neighboring order information among partial data transmitted through the specific access network are measured for the difference in the partial data reception time received by the receiving apparatus. The reception time difference information may be included.

Preferably, the transmission control unit stops the partial data transmission to the specific access network by adjusting a data transfer rate to the specific access network, and then, during the specific status check period, the specific access network among the two or more access networks. The two or more partial data having neighboring order information among the partial data transmitted through the remaining access network may be copied to transmit the copied two or more partial data to the receiving device through the specific access network.

Preferably, the transmission control unit stops transmitting partial data to the specific access network when the network state related information is received from the receiving apparatus in response to the copied two or more partial data transmitted through the specific access network. Can be released.

In the heterogeneous network-based data transmission method according to the second aspect of the present invention for achieving the above object, the partial data divided from the data to be transmitted is selected for each of the two or more access networks based on a data transmission rate of two or more access networks. Partial data selection step; A partial data transmission step of transmitting each partial data selected for each of the two or more access networks to a receiving device through a corresponding access network; A related information receiving step of receiving, from the receiving apparatus, network state related information based on at least two partial data having neighboring sequence information among partial data transmitted through a specific access network among the two or more access networks; And determining whether to adjust the data transmission rate to the specific access network based on the reception state information corresponding to the reception state of the network state related information.

Preferably, in the determining whether or not to adjust, the network state related information for two or more pieces of partial data having the neighboring order information based on the reception state information corresponding to the specific access network has passed a certain reference time. If the number of times that is not received or the network state related information is not received at least a specific reference number occurs, it may be determined that the state of the specific access network is abnormal or more to adjust the data transmission rate.

Preferably, the method may further include determining the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of the two or more access networks.

Preferably, the network state related information is partial data in which at least two partial data having neighboring order information among partial data transmitted through the specific access network are measured for the difference in the partial data reception time received by the receiving apparatus. The reception time difference information may be included.

Preferably, after stopping the partial data transmission to the specific access network by adjusting the data transfer rate to the specific access network, every other access network other than the specific access network among the two or more access networks every specific status check period. The method may further include copying two or more partial data having neighboring order information among the partial data transmitted through the transmission, and transmitting the copied two or more partial data to the receiving device through the specific access network.

Preferably, when the network state related information is received from the receiving apparatus in response to the copied two or more partial data transmitted through the specific access network, canceling the interruption of the partial data transmission to the specific access network. It may further include.

Therefore, according to the heterogeneous network-based data simultaneous transmission apparatus and method of the present invention, a response from a receiving side device is returned in an environment that provides a simultaneous transmission service for transmitting / receiving partial data obtained by dividing data using a plurality of heterogeneous networks. By using the report information related to the network status, the status of each network can be checked quickly and the transmission rate to the abnormally determined network can be reduced or stopped, thereby ensuring and improving the transmission performance of the simultaneous transmission service.

1 is a block diagram illustrating a heterogeneous network-based data concurrent transmission system according to a preferred embodiment of the present invention.
2 is a block diagram showing the configuration of a heterogeneous network-based data transmission apparatus according to a preferred embodiment of the present invention.
3 is a flowchart illustrating an operation flow in a heterogeneous network-based data concurrent transmission system according to a preferred embodiment of the present invention.
4 is a flowchart illustrating a flow of a heterogeneous network-based data transmission method according to a preferred embodiment of the present invention.

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

FIG. 1 illustrates a heterogeneous network-based data concurrent transmission system according to a preferred embodiment of the present invention.

As shown in FIG. 1, the heterogeneous network-based data concurrent transmission system according to the present invention includes a management apparatus 400 for supporting a simultaneous transmission service for dividing data to be transmitted into two or more partial data and transmitting the data over two or more networks, And at least one terminal apparatus 100 connected to the management apparatus 400 and using the simultaneous transmission service.

Here, two or more networks, i.e., heterogeneous networks, may include WCDMA, CDMA, WiBro, WLAN (WiFi) and Long Term Evolution (LTE).

In the present invention, for convenience of explanation, a first network (hereinafter referred to as a "3G network"), which refers to a wireless packet service network (WCDMA) among two or more networks, and a second network 2 network (hereinafter referred to as "WiFi network"). 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.

Furthermore, the heterogeneous network-based data concurrent transmission system according to the present invention includes an external device 500 that receives data combined / restored according to a simultaneous transmission service from the management device 400, and a policy management device (Not shown).

The external device 500 refers to a server device that transmits and receives data to and from the terminal device 100 through the management device 400. The external device 500 is connected to the terminal device 100 through data transmission / For example, various services such as a portal service and a content providing service can be provided.

Accordingly, the heterogeneous network-based data concurrent transfer service according to the present invention divides one piece of data between the terminal device 100 and the management device 400 for data transmission / reception between the terminal device 100 and the external device 500 And implements a simultaneous transmission service in which divided partial data is transmitted using a plurality of heterogeneous networks (e.g., 3G and WiFi), and the received partial data is combined to restore the original data.

At this time, the terminal device 100 and the management device 400 may be devices on the transmission side according to the uplink process and the downlink process, depending on the subject of data transmission using the service flow, that is, the data transmission service And may be a device on the receiving side. In the present embodiment, for the sake of convenience of description, a management apparatus 400 as a transmitting apparatus that is located in a heterogeneous network environment and provides a data concurrent transmission service to the terminal apparatus 100 is described on the basis of a downlink process, And a terminal device 100 as a receiving device for performing data transmission / reception with the terminal device 400 will be described.

Accordingly, since the simultaneous transmission service provided by the present invention simultaneously transmits partial data divided from one data using a plurality of heterogeneous networks (for example, 3G and WiFi), a plurality of heterogeneous types may be provided on the terminal device 100 side. It is very important to restore all the partial data received through the network (eg 3G and WiFi) without loss / loss and rearrange them in the order of division to restore the data to be transmitted.

In addition, since the network quality (throughput, delay, loss, etc.) between each network is different from each other and the network state of each network is variable in real time, heterogeneous networks used for simultaneous transmission are particularly poor In this case, the transmission performance of the partial data through the network in a poor network condition in the simultaneous transmission service may result in a problem that the transmission performance of the simultaneous transmission service is degraded.

Accordingly, the present invention provides a configuration that ensures and improves the transmission performance of the simultaneous transmission service by quickly checking the state of each network used in the environment for providing the simultaneous transmission service and reducing or stopping the transmission rate to the abnormally determined network. I would like to suggest.

For convenience of explanation, referring to the downlink, the management apparatus 400 as the transmitting side apparatus divides partial data divided from the data to be transmitted based on the data transmission rate of two or more access networks for each of the two or more access networks. Choose.

In other words, when the management device 400 receives the transmission target data to be transmitted from the external device 500 to the terminal device 100, the management device 400 divides the data into partial data and transmits data for each access network (eg, 3G and WiFi). In other words, the first transmission rate for data transmission to the first network device 200 and the second transmission rate for data transmission to the second network device 300 are checked, and the transmission target data is determined based on the confirmed transmission rate. The first partial data to be transmitted to the first network apparatus 200 is selected among the divided partial data, and the second partial data to be transmitted to the second network apparatus 300 is selected among the remaining partial data.

In addition, the management apparatus 400 transmits each partial data selected for each of two or more access networks through a corresponding access network.

That is, the management device 400 transmits the partial data selected for each access network (eg, 3G and WiFi) to each access network (eg, 3G and WiFi), and the first network device 200 transmits the management device ( The first partial data transmitted from 400 is transmitted to the terminal device 100, and the second network device 300 transmits the second partial data transmitted from the management device 400 to the terminal device 100.

Accordingly, the terminal apparatus 100 as a receiving side apparatus of the present invention receives the partial data through two or more access networks, rearranges them according to the division order based on the received order information of the partial data, and normally rearranges the partial data. By combining, the data to be transmitted can be restored.

In this case, the terminal apparatus 100 measures network state related information in response to two or more pieces of partial data having neighboring order information among partial data transmitted through a specific access network among two or more access networks, and measures the specific connection. The network state related information of the network may be provided to the management device 400.

In this case, the network state-related information is a measure of the difference in the partial data reception time received by each of at least two partial data having neighboring order information among the partial data transmitted through the specific access network to the receiving device, that is, the terminal device 100. Preferably, the partial data reception time difference information is included.

In other words, the terminal device 100 may provide various types of report information to the management device 400 according to receiving partial data from two or more access networks from the management device 400, in particular, the terminal device 100. May provide partial data reception time difference information on two or more pieces of partial data having neighboring order information for each access network as network state related information.

For example, the management device 400 transmits the partial data packet of the sequence information 1 and the partial data packet of the sequence information 4 and 5 through the first network (for example, 3G), and establishes the second network (for example, WiFi). It is assumed that partial data packets of the sequence information 2 and 3 and partial data packets of the sequence information 6 are transmitted through the above.

The terminal device 100, for each of two or more access networks (for example, 3G and WiFi), two or more pieces of partial data having neighboring order information in the process of rearranging them according to the order of division based on the order information of the received partial data. Recognize.

That is, the terminal device 100 recognizes reception of two or more pieces of partial data having neighboring order information, that is, partial data packets of order information 4 and 5, for each of the first networks (for example, 3G). The first network corresponding network state related information including the measured partial data reception time difference information of the partial data packet and the partial data packet of the sequence information 5 and the measured partial data reception time difference information will be provided to the management apparatus 400. .

In addition, the terminal apparatus 100 recognizes reception of two or more pieces of partial data having neighboring order information for each of the second networks (for example, WiFi), that is, partial data packets of the order information 2 and 3, and the order information 2 The second network-corresponding network state related information including the measured partial data reception time difference information of the partial data packet and the partial data packet of the sequence information 3 and the measured partial data reception time difference information will be provided to the management apparatus 400. .

As such, the terminal device 100 manages the network state related information measured in response to two or more pieces of partial data having neighboring order information received for each of two or more access networks (eg, 3G and WiFi). To be provided.

Accordingly, the management apparatus 400 receives, from the terminal apparatus 100, network state related information based on at least two partial data having neighboring order information among partial data transmitted through a specific access network among two or more access networks. It is determined whether to adjust the data transmission rate to the specific access network based on the reception state information corresponding to the reception state of the network state related information.

That is, the management device 400, based on the reception state information corresponding to the reception state of the network state related information from the reception device, that is, the terminal device 100, and if the state abnormality of the specific connection network is determined, the specific access network. It may be determined that the data transmission rate of the furnace is adjusted, and accordingly, the data transmission rate to the specific access network may be adjusted.

Specifically, the management device 400, based on the reception state information corresponding to the specific access network, network state related information corresponding to the two or more pieces of partial data having the neighboring order information has passed a certain reference time. If the number of times that is not received or the network state related information is not received at least a specific reference number occurs, the data transmission rate may be adjusted by determining that the state is equal to or greater than the state of the specific access network.

That is, for example, the management apparatus 400 transmits a partial data packet of neighboring sequence information 4 and 5 through a first network (for example, 3G), and thus corresponds to a network state corresponding to the corresponding network state from the terminal apparatus 100. It can be expected that information will be received. Accordingly, when network state related information corresponding to the partial data packets of the sequence information 4 and 5 is not received to pass a specific reference time, the management device 400 determines that the state of the first network (eg, 3G) is abnormal. Can be.

In this case, the specific reference time may be a time of RT × a (a is a constant (eg, 3)) based on an average reception time (RT) for network state related information.

Alternatively, for example, the management device 400 may transmit a partial data packet of neighboring sequence information 4 and 5 through a first network (eg, 3G), and thus may be related to the network state predicted and received from the terminal device 100. If no information is received and network state related information corresponding to two or more partial data (for example, partial data packets of sequence information 6 and 7) of neighboring sequence information transmitted next is received, the partial data packet of sequence information 4 and 5 is received. Network state related information corresponding to may be determined as not received. The management device 400 may determine that the state of the first network (eg, 3G) is abnormal when the number of times of not receiving network state related information determined as not received occurs above a specific reference number (eg, b). have.

In this case, the management device 400 may determine the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of two or more access networks (eg, 3G and WiFi). .

That is, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the management device 400 determines that the data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on 1: 2, the specific reference time for the 3G network may be differently determined as x seconds (for example, 20 seconds) and the specific reference time for the WiFi network to y seconds (for example, 10 seconds). At this time, it is preferable that the management device 400 differently determines the specific reference time for each access network through the constant a described above, and preferably determines the specific reference time to be inversely proportional to the data transmission rate of the access network.

Alternatively, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the management device 400 determines that the data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on the 1: 2, a specific reference number b-1 for a 3G network (for example, 5) and a specific reference number b-2 for a WiFi network (for example, 10) may be determined differently. At this time, it is preferable that the management device 400 determines the specific reference number to be proportional to the data transmission rate of the access network.

As described above, the management apparatus 400 determines, based on the reception state information corresponding to the reception state of the network state related information from the terminal device 100, when a state abnormality of a specific connection network (eg, 3G) is determined. You can adjust the data transfer rate to the network (eg 3G).

Preferably, the management device 400 reduces the data transfer rate to a specific access network (for example, 3G) in which a state abnormality is determined by a specific value, and more preferably, the data transfer rate is 0%. Example: You can stop sending partial data to 3G).

As such, when the management device 400 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the management device 400 moves to the stopped access network (eg, 3G). The selected partial data (eg, the first partial data) to be transmitted may be transmitted through the remaining access network in which transmission is not interrupted according to a predetermined specific policy.

Alternatively, if the management device 400 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the management device 400 disconnects the access network (eg, 3G) that has been stopped. The partial data divided based on the remaining access networks except for the remaining access networks may be reselected and transmitted for each remaining access network.

Meanwhile, in the above description, although the management device 400 refers to the partial data reception time difference information from the terminal device 100 as the network state related information used for determining an abnormal state of the access network, various types of report information may be used. Could be.

For example, the management device 400 determines whether the connection network is in an abnormal state on the basis of receiving network state related information including report information (eg, keep alive) that can be predicted from the terminal device 100. The data transmission rate to the specific access network determined to be abnormal may be adjusted, i.e., the transmission may be stopped.

Then, the management apparatus 400 stops the partial data transmission to the specific access network by adjusting the data transfer rate to the specific access network, and then the specific access network of the two or more access networks is disconnected every specific status check period. Copy the two or more partial data having neighboring order information among the partial data transmitted through the remaining access network, and transmit the copied two or more partial data to the reception device, that is, the terminal device 100, through the specific access network. .

Accordingly, the management device 400, when the network state related information is received from the terminal device 100 in response to the copied two or more pieces of partial data transmitted through a specific access network, transmits the partial data to the specific access network. You can release the interruption.

That is, the management apparatus 400 stops the transmission of the partial data to a specific access network (eg, 3G), and then rests the access network other than the specific access network (eg, 3G) among two or more access networks every specific status check period. Copy two or more partial data (eg, partial data packets of sequence information n, n + 1) having neighboring sequence information among the partial data transmitted through (eg WiFi), and copy the two or more partial data (for example, The partial data packet of the sequence information n, n + 1 may be transmitted to the receiving apparatus, that is, the terminal apparatus 100, through a specific access network (eg, 3G).

Two or more copied partial data (for example, partial data packets of sequence information n, n + 1) transmitted by the management device 400 are received by the terminal device 100 through a specific access network (for example, 3G) that has been stopped. Will be. Therefore, the terminal device 100, as described above, the network state related information measured in response to two or more pieces of partial data having neighboring order information received through the 3G network, that is, partial data packets of the order information n, n + 1. It will be provided to the management device (400).

Accordingly, the management apparatus 400 corresponds to the copied two or more partial data (eg, partial data packets of sequence information n, n + 1) transmitted through a specific access network (eg, 3G). When the network status related information is received, the partial data transmission interruption to the specific access network (eg 3G) can be canceled.

In this case, the specific status checking period may be a time of T × c (c is a random constant within a specific range) based on the status checking reference period T, and the management apparatus 400 may copy the two or more pieces of partial data ( For example, in response to the network status related information not being received from the terminal device 100 in response to the partial data packet of the sequence information n, n + 1, c may be reselected to change the status checking period.

On the other hand, in the foregoing description, the case where the management apparatus 400 transmits partial data obtained by dividing the transmission object data to the terminal apparatus 100 on the basis of the downlink is described.

In addition, in the simultaneous transmission service to which the present invention is applied, the terminal apparatus 100 transmits the partial data obtained by dividing the transmission target data to the management apparatus 400 during the uplink, and the management apparatus 400 rearranges the partial data. Since it is combined, the management apparatus 400 as a receiving apparatus in the uplink performs the aforementioned network state related information measurement and transmission operation performed by the terminal apparatus 100 as a receiving apparatus in the downlink, and as a transmitting apparatus in the downlink. Determination of whether to control the data transmission rate based on the reception state information of the above-mentioned network state related information performed by the management device 400 (determination of network state abnormality) and the operation of stopping partial data transmission to the specific access network determined as abnormal and canceling the transmission interruption. The terminal device 100 as a transmitting device in the uplink may be performed.

Hereinafter, a configuration of a heterogeneous network-based data simultaneous transmission device, that is, a transmission side device, according to the present invention will be described in more detail with reference to FIG. 2. For convenience of description, reference numbers of the management apparatus 400 are referred to based on the downlink and reference is made to the reception apparatus 100 using the reference numbers of the terminal apparatus 100.

The heterogeneous network-based data simultaneous transmission device, that is, the transmitting device 400 according to the preferred embodiment of the present invention, divides the partial data divided from the data to be transmitted based on the data transmission rate of two or more connection networks for each of the two or more connection networks. A partial data selection unit 420 to select, a communication unit 410 for transmitting each partial data selected for each of the two or more connection networks to the receiving device 100 through a corresponding connection network, and a specific connection among the two or more connection networks; Receive network state related information based on two or more partial data having neighboring sequence information among the partial data transmitted through the network from the receiving device 100, and based on the received state information corresponding to the received state of the network state related information. Determine whether to adjust the data transmission rate to the specific access network Includes a transmission controller 430.

The partial data selection unit 420 selects the partial data divided from the transmission target data for each access network based on a preset data transmission rate of two or more access networks.

That is, the partial data selection unit 420 divides the transmission target data to be transmitted to the reception apparatus 100 into partial data and divides the data into the partial data, and the data transmission rate of each access network (eg, 3G and WiFi), that is, the first network. The first transmission rate for data transmission to the device 200 and the second transmission rate for data transmission to the second network device 300 are checked, and among the partial data divided from the transmission target data based on the confirmed transmission rate. The first partial data to be transmitted to the first network device 200 is selected, and the second partial data to be transmitted to the second network device 300 is selected among the remaining partial 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.

The communication unit 410 transmits each partial data selected for each connection network through a corresponding connection network among two or more connection networks.

That is, the communication unit 410 transmits a plurality of first partial data selected corresponding to the 3G network to the first network device 200 located in the 3G network, and transmits the plurality of second partial data selected corresponding to the WiFi network. By transmitting to the second network head 300 located in the network, the first network apparatus 200 transmits the first partial data to the receiving apparatus 100, and the second network apparatus 300 transmits the second partial data. Transmission to the receiving device 100.

The transmission control unit 430 receives, from the receiving apparatus 100, network state related information based on two or more partial data having neighboring sequence information among partial data transmitted through a specific access network among two or more access networks, and receives the network. The method determines whether the data transmission rate to the specific access network is adjusted based on the reception state information corresponding to the reception state of the state related information.

Accordingly, the transmission control unit 430, based on the reception state information corresponding to the reception state of the network state related information from the reception device 100, if it is determined that the abnormal state of the specific access network, the data to the specific access network. It may be determined that the transmission rate is adjusted, and accordingly, the data transmission rate to the specific access network may be adjusted.

In more detail, as described above, the reception apparatus 100 measures a network corresponding to two or more pieces of partial data having neighboring sequence information received for each of two or more access networks (for example, 3G and WiFi). The state related information is provided to the heterogeneous network-based data simultaneous transmission device 400.

Here, the network state related information is a measure of the difference in the partial data reception time at which each of the two or more partial data having neighboring sequence information among the partial data transmitted through the specific access network among the two or more access networks is received by the receiving apparatus 100. Preferably, the partial data reception time difference information is included.

Accordingly, the transmission control unit 430, based on the reception state information corresponding to the network state-related information reception state from the receiving apparatus 100 corresponding to each of the access networks (eg 3G and WiFi), respectively, (eg: 3G and WiFi) can be determined, and if it is determined that the status of the specific access network is abnormal, it is determined that the data transmission rate to the specific access network is adjusted. Can be adjusted.

For example, the transmission control unit 430 may correspond to a specific access network of two or more access networks so that the network state related information corresponding to the specific two or more pieces of partial data having the neighboring order information passes a specific reference time. When the number of times of receiving or not receiving the network state related information occurs more than a specific reference number of times, it may be determined that the state of the specific access network is abnormal or more to adjust the data transmission rate.

That is, as the transmission controller 430 transmits the partial data packets of the neighboring order information 4 and 5 through the first network (eg, 3G), network state related information corresponding to the corresponding information may be received from the receiving apparatus 100. Can be predicted. Accordingly, if network state related information corresponding to the partial data packets of the sequence information 4 and 5 is not received to pass a specific reference time, the transmission control unit 430 may determine that the state of the first network (eg, 3G) is abnormal. Can be.

In this case, the specific reference time may be a time of RT × a (a is a constant (eg, 3)) based on an average reception time (RT) for network state related information.

Alternatively, for example, the transmission control unit 430 may transmit a partial data packet of neighboring sequence information 4 and 5 through a first network (eg, 3G), and thus may be related to the network state predicted and received from the receiving apparatus 100. If no information is received and network state related information corresponding to two or more partial data (for example, partial data packets of sequence information 6 and 7) of neighboring sequence information transmitted next is received, the partial data packet of sequence information 4 and 5 is received. Network state related information corresponding to may be determined as not received. The transmission control unit 430 may determine that the state of the first network (eg 3G) is abnormal when the number of times of not receiving network state related information determined as not received occurs above a specific reference number (eg b). have.

In this case, the transmission controller 430 may determine the specific reference time and the specific reference number for each access network based on the data transmission rate set corresponding to each of two or more access networks (eg, 3G and WiFi). .

That is, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the transmission controller 430 may transmit a data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on 1: 2, the specific reference time for the 3G network may be differently determined as x seconds (for example, 20 seconds) and the specific reference time for the WiFi network to y seconds (for example, 10 seconds). In this case, the transmission control unit 430 preferably determines the specific reference time for each access network differently through the above constant a, and preferably determines the specific reference time to be inversely proportional to the data transmission rate of the access network.

Alternatively, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the transmission controller 430 may provide a data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on the 1: 2, a specific reference number b-1 for a 3G network (for example, 5) and a specific reference number b-2 for a WiFi network (for example, 10) may be determined differently. In this case, the transmission control unit 430 preferably determines a specific reference number in proportion to the data transmission rate of the access network.

As described above, when it is determined that the state of a specific access network (eg, 3G) is abnormal based on the reception of network state related information from the reception apparatus 100, the transmission control unit 430 transmits data to the specific access network (eg, 3G). You can adjust the transmission rate.

Preferably, the transmission control unit 430 reduces the data transmission rate to a specific access network (for example, 3G) in which a state abnormality is determined by a specific value, and more preferably, the data transmission rate is set to 0% so that the specific access network ( Example: You can stop sending partial data to 3G).

As such, when the transmission control unit 430 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the transmission control unit 430 moves to the stopped access network (eg, 3G). The partial data selector 420 and the communication unit 410 may be controlled to transmit the partial data selected to be transmitted (for example, the first partial data) through the remaining access network in which transmission is not interrupted according to a predetermined specific policy. .

Alternatively, when the transmission control unit 430 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the transmission control unit 430 disconnects the access network (eg, 3G) that has been stopped. The partial data selector 420 and the communicator 410 may be controlled to reselect and transmit the divided partial data based on the remaining access network except for the remaining access network.

Meanwhile, in the above description, partial data reception time difference information from the reception device 100 is referred to as network state related information used by the transmission control unit 430 of the heterogeneous network-based data simultaneous transmission device 400 to determine an abnormal state of the access network. In addition, various types of reporting information may be used.

For example, the transmission controller 430 determines whether the connection network is in an abnormal state based on the reception of network state related information including report information (eg, keep alive) that can be predicted from the reception apparatus 100. The data transmission rate to the specific access network determined to be abnormal may be adjusted, i.e., the transmission may be stopped.

Then, the transmission controller 430 stops the partial data transmission to the specific access network by adjusting the data transmission rate to the specific access network, and then the specific access network of the two or more access networks is disconnected every specific status check period. The two or more partial data having neighboring order information among the partial data transmitted through the remaining access network may be copied, and the copied two or more partial data may be transmitted to the receiving apparatus 100 through the specific access network.

Accordingly, when the network state related information is received from the reception apparatus 100 in response to the copied two or more pieces of partial data transmitted through the specific access network, the transmission controller 430 transmits the partial data to the specific access network. You can release the interruption.

That is, the transmission control unit 430 stops the partial data transmission to a specific access network (eg, 3G), and then rests the remaining access networks other than the specific access network (eg, 3G) among two or more access networks every specific status check period. Copy two or more partial data (eg, partial data packets of sequence information n, n + 1) having neighboring sequence information among the partial data transmitted through (eg WiFi), and copy the two or more partial data (for example, The partial data packet of the sequence information n, n + 1 may be transmitted to the receiving apparatus 100 through a specific access network (eg, 3G).

Two or more partial data (e.g., partial data packets of sequence information n, n + 1) transmitted by the heterogeneous network-based data simultaneous transmission device 400 are transmitted through a specific access network (for example, 3G) that has been stopped. Will be received at 100. Accordingly, the reception apparatus 100 receives network state related information measured in response to two or more pieces of partial data having neighboring order information received through the 3G network, that is, partial data packets of the order information n, n + 1 as described above. The heterogeneous network-based data transmission apparatus 400 will be provided.

Accordingly, the transmission control unit 430 may receive the reception device 100 in response to the copied two or more partial data (eg, partial data packets of sequence information n, n + 1) transmitted through a specific access network (eg, 3G). When the network status related information is received, the partial data transmission interruption to the specific access network (eg 3G) can be canceled.

In this case, the specific status check period may be a time of T × c (c is a random constant within a specific range) based on the status check reference period T, and the transmission control unit 430 may copy the two or more pieces of partial data ( For example, each time the network state related information is not received from the receiving apparatus 100 in response to the partial data packet of the order information n, n + 1, c may be reselected to change the status checking period.

As described above, the heterogeneous network-based data simultaneous transmission apparatus and the heterogeneous network-based data simultaneous transmission system including the apparatus according to the present invention transmit / receive partial data obtained by partitioning data using a plurality of heterogeneous networks. In an environment providing simultaneous transmission service, the status of each network is quickly confirmed by receiving report information related to the network status returned from the receiving device, in particular, partial data reception time difference information, and the transmission rate to the abnormally determined network is determined. By reducing or stopping, the transmission performance of the simultaneous transmission service can be guaranteed and improved.

Hereinafter, a heterogeneous network-based data transmission method according to a preferred embodiment of the present invention will be described with reference to FIGS. 3 to 4. Here, for the convenience of description, the configuration shown in FIGS. 1 to 2 described above will be described with reference to the corresponding reference numerals.

First, the operation flow in the heterogeneous network-based data concurrent transmission system according to the preferred embodiment of the present invention will be described with reference to FIG.

For convenience of explanation, referring to the downlink, the management apparatus 400 as the transmitting side apparatus divides partial data divided from the data to be transmitted based on the data transmission rate of two or more access networks for each of the two or more access networks. Select (S10).

In addition, the management apparatus 400 transmits each partial data selected for each of two or more access networks through a corresponding access network.

That is, the management device 400 transmits the partial data selected for each access network (eg, 3G and WiFi) to each access network (eg, 3G and WiFi), and the first network device 200 transmits the management device ( The first partial data transmitted from 400 is transmitted to the terminal device 100 (S20), and the second network device 300 transmits the second partial data transmitted from the management device 400 to the terminal device 100. It is made (S25).

Accordingly, the terminal apparatus 100 as a receiving side apparatus of the present invention receives the partial data through two or more access networks, rearranges them according to the division order based on the received order information of the partial data, and normally rearranges the partial data. By combining, the data to be transmitted can be restored (S40).

In this case, the terminal apparatus 100 measures network state related information in response to two or more pieces of partial data having neighboring order information among partial data transmitted through a specific access network among two or more access networks, and measures the specific connection. Network state related information of the network may be provided to the management device (400) (S30).

That is, when the step S30 is described in more detail, the terminal device 100 may provide the management device 400 with various types of report information according to receiving partial data from the management device 400 through two or more access networks. In particular, the terminal device 100 may provide partial data reception time difference information of two or more pieces of partial data having neighboring order information for each access network as network state related information.

In this case, the network state-related information is a measure of the difference in the partial data reception time received by each of at least two partial data having neighboring order information among the partial data transmitted through the specific access network to the receiving device, that is, the terminal device 100. Preferably, the partial data reception time difference information is included.

For example, the management device 400 transmits the partial data packet of the sequence information 1 and the partial data packet of the sequence information 4 and 5 through the first network (for example, 3G), and establishes the second network (for example, WiFi). It is assumed that partial data packets of the sequence information 2 and 3 and partial data packets of the sequence information 6 are transmitted through the above.

The terminal device 100, for each of two or more access networks (for example, 3G and WiFi), two or more pieces of partial data having neighboring order information in the process of rearranging them according to the order of division based on the order information of the received partial data. Recognize

That is, the terminal device 100 recognizes reception of two or more pieces of partial data having neighboring order information, that is, partial data packets of order information 4 and 5, for each of the first networks (for example, 3G). The first network corresponding network state related information including the measured partial data reception time difference information of the partial data packet and the partial data packet of the sequence information 5 and the measured partial data reception time difference information will be provided to the management apparatus 400. .

In addition, the terminal apparatus 100 recognizes reception of two or more pieces of partial data having neighboring order information for each of the second networks (for example, WiFi), that is, partial data packets of the order information 2 and 3, and the order information 2 The second network-corresponding network state related information including the measured partial data reception time difference information of the partial data packet and the partial data packet of the sequence information 3 and the measured partial data reception time difference information will be provided to the management apparatus 400. .

As such, the terminal device 100 manages the network state related information measured in response to two or more pieces of partial data having neighboring order information received for each of two or more access networks (eg, 3G and WiFi). To be provided.

Accordingly, the management apparatus 400 receives, from the terminal apparatus 100, network state related information based on at least two partial data having neighboring order information among partial data transmitted through a specific access network among two or more access networks. It is determined whether to adjust the data transmission rate to the specific access network based on the reception state information corresponding to the reception state of the network state related information.

That is, the management device 400, based on the reception state information corresponding to the reception state of the network state related information from the reception device, that is, the terminal device 100, and if the state abnormality of the specific connection network is determined, the specific access network. It may be determined that the data transmission rate of the furnace is adjusted, and accordingly, the data transmission rate to the specific access network may be adjusted.

In detail, the management apparatus 400 may not receive the network state related information corresponding to the specific two or more pieces of partial data having the neighboring order information so as to pass a specific reference time or correspond to the specific access network. When the number of times that the state related information is not received occurs more than a specific reference number, it may be determined that the state of the specific access network is abnormal or more to adjust the data transmission rate (S50).

That is, for example, the management apparatus 400 transmits a partial data packet of neighboring sequence information 4 and 5 through a first network (for example, 3G), and thus corresponds to a network state corresponding to the corresponding network state from the terminal apparatus 100. It can be expected that information will be received. Accordingly, when network state related information corresponding to the partial data packets of the sequence information 4 and 5 is not received to pass a specific reference time, the management device 400 determines that the state of the first network (eg, 3G) is abnormal. Can be.

In this case, the specific reference time may be a time of RT × a (a is a constant (eg, 3)) based on an average reception time (RT) for network state related information.

Alternatively, for example, the management device 400 may transmit a partial data packet of neighboring sequence information 4 and 5 through a first network (eg, 3G), and thus may be related to the network state predicted and received from the terminal device 100. If no information is received and network state related information corresponding to two or more partial data (for example, partial data packets of sequence information 6 and 7) of neighboring sequence information transmitted next is received, the partial data packet of sequence information 4 and 5 is received. Network state related information corresponding to may be determined as not received. The management device 400 may determine that the state of the first network (eg, 3G) is abnormal when the number of times of not receiving network state related information determined as not received occurs above a specific reference number (eg, b). have.

In this case, the management device 400 may determine the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of two or more access networks (eg, 3G and WiFi). .

That is, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the management device 400 determines that the data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on 1: 2, the specific reference time for the 3G network may be differently determined as x seconds (for example, 20 seconds) and the specific reference time for the WiFi network to y seconds (for example, 10 seconds). At this time, it is preferable that the management device 400 differently determines the specific reference time for each access network through the constant a described above, and preferably determines the specific reference time to be inversely proportional to the data transmission rate of the access network.

Alternatively, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the management device 400 determines that the data transmission rate corresponding to each of the access networks (eg, 3G and WiFi). Based on the 1: 2, a specific reference number b-1 for a 3G network (for example, 5) and a specific reference number b-2 for a WiFi network (for example, 10) may be determined differently. At this time, it is preferable that the management device 400 determines the specific reference number to be proportional to the data transmission rate of the access network.

As described above, when the management apparatus 400 determines that the status of the specific access network (eg, 3G) is abnormal based on the reception status information corresponding to the reception status of the network status related information from the terminal apparatus 100, the management apparatus 400 determines the specific connection. The data transmission rate to the network (eg 3G) can be adjusted (S60).

Preferably, the management device 400 reduces the data transfer rate to a specific access network (for example, 3G) in which a state abnormality is determined by a specific value, and more preferably, the data transfer rate is 0%. Example: You can stop sending partial data to 3G).

As such, when the management device 400 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the management device 400 moves to the stopped access network (eg, 3G). The selected partial data (eg, the first partial data) to be transmitted may be transmitted through the remaining access network in which transmission is not interrupted according to a predetermined specific policy (S70).

Alternatively, if the management device 400 stops the partial data transmission of a part of two or more access networks (eg, 3G and WiFi) to a specific access network (eg, 3G), the management device 400 disconnects the access network (eg, 3G) that has been stopped. The partial data divided based on the remaining access network except for the selected access data may be reselected for each remaining access network and transmitted (S70).

Meanwhile, in the above description, although the management device 400 refers to the partial data reception time difference information from the terminal device 100 as the network state related information used for determining an abnormal state of the access network, various types of report information may be used. Could be.

For example, the management device 400 determines whether the connection network is in an abnormal state on the basis of receiving network state related information including report information (eg, keep alive) that can be predicted from the terminal device 100. The data transmission rate to the specific access network determined to be abnormal may be adjusted, i.e., the transmission may be stopped.

Then, the management apparatus 400 stops the partial data transmission to the specific access network by adjusting the data transfer rate to the specific access network, and then the specific access network of the two or more access networks is disconnected every specific status check period. Copying two or more partial data having neighboring order information among the partial data transmitted through the other access network (S80), the receiving device or the terminal device 100 to copy the two or more partial data through the specific access network Transfer to (S90).

Accordingly, the management device 400, when the network state related information is received from the terminal device 100 in response to the copied two or more pieces of partial data transmitted through a specific access network (S95), The partial data transmission stop can be canceled (S97).

That is, the management apparatus 400 stops the transmission of the partial data to a specific access network (eg, 3G), and then rests the access network other than the specific access network (eg, 3G) among two or more access networks every specific status check period. Copy two or more partial data (eg, partial data packets of sequence information n, n + 1) having neighboring sequence information among the partial data transmitted through (eg WiFi), and copy the two or more partial data (for example, The partial data packet of the sequence information n, n + 1 may be transmitted to the receiving apparatus, that is, the terminal apparatus 100, through a specific access network (eg, 3G).

Two or more copied partial data (for example, partial data packets of sequence information n, n + 1) transmitted by the management device 400 are received by the terminal device 100 through a specific access network (for example, 3G) that has been stopped. Will be. Therefore, the terminal device 100, as described above, the network state related information measured in response to two or more pieces of partial data having neighboring order information received through the 3G network, that is, partial data packets of the order information n, n + 1. It will be provided to the management device (400).

Accordingly, the management apparatus 400 corresponds to the copied two or more partial data (eg, partial data packets of sequence information n, n + 1) transmitted through a specific access network (eg, 3G). When the network status related information is received, the partial data transmission interruption to the specific access network (eg 3G) can be canceled.

In this case, the specific status checking period may be a time of T × c (c is a random constant within a specific range) based on the status checking reference period T, and the management apparatus 400 may copy the two or more pieces of partial data ( For example, in response to the network status related information not being received from the terminal device 100 in response to the partial data packet of the sequence information n, n + 1, c may be reselected to change the status checking period.

Hereinafter, referring to FIG. 4, a heterogeneous network-based simultaneous data transmission method according to the present invention, that is, an operation method of a transmitting device will be described.

In the operation method of the transmitting apparatus according to the present invention, the partial data divided from the data to be transmitted is selected for each access network based on a preset data transfer rate for two or more access networks (S100).

That is, in the operation method of the transmitting apparatus according to the present invention, when receiving the transmission target data to be transmitted to the receiving apparatus 100, it is divided into partial data, and the data transmission rate for each access network (for example, 3G and WiFi) The first transmission rate for data transmission to the first network device 200 and the second transmission rate for data transmission to the second network device 300 are checked, and are divided from the transmission target data based on the confirmed transmission rate. The first partial data to be transmitted to the first network device 200 is selected from the partial data, and the second partial data to be transmitted to the second network device 300 is selected from the remaining partial data.

In the operation method of the transmitting apparatus according to the present invention, each partial data selected for each access network is transmitted through a corresponding access network among two or more access networks (S120).

That is, in the method of operating a transmitting device according to the present invention, the plurality of first partial data selected for the 3G network is transmitted to the first network device 200 located in the 3G network, and the plurality of selected for the WiFi network. By transmitting the second partial data of the second network head 300 located in the WiFi network, the first network device 200 transmits the first partial data to the receiving device 100, the second network device 300 ) Transmits the second partial data to the receiving apparatus 100.

In accordance with another aspect of the present invention, there is provided a method of operating a transmitting-side apparatus, comprising: a receiving apparatus measuring network state related information in response to two or more pieces of partial data having neighboring sequence information among pieces of partial data transmitted through a specific access network; On the basis of the reception state information corresponding to the reception state of the network state related information from 100), it is determined whether or not to adjust the data transmission rate to the specific access network.

That is, the operation method of the transmitting-side device according to the present invention is based on the reception state information corresponding to the reception state of the network state related information from the reception device 100, and when it is determined that the state abnormality of the specific access network is determined, Adjust the data transfer rate to a specific access network.

In more detail, as described above, the reception apparatus 100 measures a network corresponding to two or more pieces of partial data having neighboring sequence information received for each of two or more access networks (for example, 3G and WiFi). The state-related information is provided to the heterogeneous network-based data simultaneous transmission device 400 (S130).

Here, the network state related information is a measure of the difference in the partial data reception time at which each of the two or more partial data having neighboring sequence information among the partial data transmitted through the specific access network among the two or more access networks is received by the receiving apparatus 100. Preferably, the partial data reception time difference information is included.

Therefore, the operation method of the transmitting device according to the present invention is based on the reception status information corresponding to the reception status of the network status related information from the reception apparatus 100 corresponding to each of the access networks (eg, 3G and WiFi). It may be determined whether the data transmission rate is adjusted by determining whether the access network is abnormal for each of the access networks (eg, 3G and WiFi) (S140).

For example, in a method of operating a transmitting-side device according to the present invention, network state related information corresponding to specific two or more pieces of partial data having neighboring sequence information corresponds to a specific connection network among two or more connection networks. When the number of times that is not received over time or the number of times the network state related information is not received occurs more than a specific reference number, it may be determined that the state of the specific access network is abnormal or more to adjust the data transmission rate.

That is, in the method of operating a transmitting device according to the present invention, a partial data packet of neighboring sequence information 4 and 5 is transmitted through a first network (for example, 3G), and thus the network state corresponding to that from the receiving device 100 is transmitted. It can be predicted that the related information will be received. Therefore, if the network state related information corresponding to the partial data packet of the sequence information 4 and 5 is not received so as to pass a specific reference time, the operation method of the transmitting apparatus according to the present invention is performed by the first network (for example, 3G). It can be judged as abnormal.

In this case, the specific reference time may be a time of RT × a (a is a constant (eg, 3)) based on an average reception time (RT) for network state related information.

Or, for example, in the operation method of the transmitting device according to the present invention, by receiving the partial data packet of the sequence information 4, 5 neighboring over the first network (for example, 3G) is received from the receiving device 100 If the predicted network state related information is not received and network state related information corresponding to two or more partial data (for example, partial data packets of sequence information 6 and 7) of the neighboring sequence information transmitted next is received, the sequence information 4, The network state related information corresponding to the partial data packet of 5 may be determined as not received. According to an embodiment of the present invention, when the number of unreceived network state related information determined as unreceived is more than a specific reference number (e.g., b), the state of the first network (e.g., 3G) is determined. The above can be judged.

At this time, the operation method of the transmitting device according to the present invention, based on the data transmission rate set corresponding to each of two or more access networks (eg, 3G and WiFi), the specific reference time and the specific reference for each access network The number of times can be determined.

That is, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the operation method of the transmitting apparatus according to the present invention may be applied to each of the access networks (eg, 3G and WiFi). Based on the corresponding data transmission ratio 1: 2, the specific reference time for the 3G network may be differently determined as x seconds (for example, 20 seconds) and the specific reference time for the WiFi network as y seconds (for example, 10 seconds). . In this case, in the operation method of the transmitting apparatus according to the present invention, it is preferable to differently determine the specific reference time for each access network through the constant a described above, and determine the specific reference time to be inversely proportional to the data transmission rate of the access network. It is desirable to.

Alternatively, assuming that the data transmission ratio set corresponding to each of the access networks (eg, 3G and WiFi) is 1: 2, the operation method of the transmitting apparatus according to the present invention may be applied to each of the access networks (eg, 3G and WiFi). Based on the corresponding data transfer ratio 1: 2, different determinations of b-1 for the 3G network (e.g. 5) and b-2 for the WiFi network (e.g. 10) Can be. At this time, it is preferable that the method of operation of the transmitting-side apparatus according to the present invention determine the specific reference number to be proportional to the data transmission rate of the access network.

As described above, in the operation method of the transmitting apparatus according to the present invention, when it is determined that the abnormal state of a specific access network (eg 3G) is determined based on the reception of network state related information from the receiving apparatus 100, the specific access network (eg The data transfer rate to 3G) can be adjusted (S150).

Preferably, the operation method of the transmitting apparatus according to the present invention reduces the data transmission rate to a specific access network (e.g. 3G) in which a state abnormality is determined by a specific value, and more preferably to reduce the data transmission rate to 0%. The transmission of the partial data to a specific access network (eg 3G) can be stopped (S150).

As described above, in the method of operating the transmitting apparatus according to the present invention, when the partial data transmission of some of the two or more access networks (eg, 3G and WiFi) is interrupted to the specific access network (eg, 3G), For example: 3G) may transmit the selected partial data (eg, the first partial data) through the remaining access network in which transmission is not interrupted according to a predetermined specific policy.

Or, the operation method of the transmitting device according to the present invention, if the transmission of the partial data to a specific connection network (eg 3G) of some of the two or more connection networks (eg 3G and WiFi), the transmission network interrupted transmission ( Example: Partial data divided based on the access network other than 3G) may be reselected and transmitted for the remaining access networks.

On the other hand, in the above-described method of operation of the transmitting apparatus according to the present invention, the partial data reception time difference information from the receiving apparatus 100 is referred to as network state related information used for determining an abnormal state of the access network. Forms of reporting information will be available.

For example, the operation method of the transmitting apparatus according to the present invention is based on the reception of network state related information including report information (eg, keep alive) that can be predicted to be received from the receiving apparatus 100. It may be determined whether an abnormal state is detected, and the data transmission rate to the specific access network where the abnormal state is determined may be adjusted or stopped.

In addition, in the method of operating a transmitting device according to the present invention, the data transmission rate to a specific access network is interrupted to stop partial data transmission to the specific access network, and then, among the two or more access networks every specific status checking period. Copy two or more pieces of partial data having neighboring sequence information among the partial data transmitted through the other access network instead of the specific access network, and copy the copied two or more pieces of partial data to the receiving device 100 through the specific access network. It may be transmitted (S160).

Accordingly, in the method of operating a transmitting device according to the present invention, when the network state related information is received from the receiving apparatus 100 in response to the copied two or more pieces of partial data transmitted through a specific access network, the specific access network. It is possible to cancel the partial data transmission to the furnace (S170, S180).

That is, in the method of operating a transmitting device according to the present invention, after stopping partial data transmission to a specific access network (eg 3G), the specific access network (eg 3G) among two or more access networks every specific status check period. 2 or more partial data (eg, partial data packets of sequence information n, n + 1) having neighboring sequence information among the partial data transmitted through the remaining access network (for example, WiFi), and the copied 2 The partial data (eg, partial data packets of sequence information n, n + 1) may be transmitted to the receiving apparatus 100 through a specific access network (eg, 3G).

Two or more partial data (e.g., partial data packets of sequence information n, n + 1) transmitted by the heterogeneous network-based data simultaneous transmission device 400 are transmitted through a specific access network (for example, 3G) that has been stopped. Will be received at 100. Accordingly, the reception apparatus 100 receives network state related information measured in response to two or more pieces of partial data having neighboring order information received through the 3G network, that is, partial data packets of the order information n, n + 1 as described above. The heterogeneous network-based data transmission apparatus 400 will be provided.

Accordingly, the operation method of the transmitting apparatus according to the present invention corresponds to the copied two or more partial data (eg, partial data packets of sequence information n, n + 1) transmitted through a specific access network (eg, 3G). When the network state related information is received from the receiving apparatus 100 (S170), it is possible to cancel the partial data transmission interruption to a specific access network (for example, 3G) (A180).

In this case, the specific status checking period may be a time of T × c (c is a random constant within a specific range) based on the status checking reference period T, and the operating method of the transmitting apparatus according to the present invention may be Whenever network state related information is not received from the reception apparatus 100 in response to two or more partial data (eg partial data packets of sequence information n, n + 1), the status check period may be changed by reselecting c. .

As described above, according to the heterogeneous network-based data transmission method according to the present invention, a receiving side apparatus in an environment for providing a simultaneous transmission service for transmitting / receiving partial data obtained by splitting data using a plurality of heterogeneous networks. By using the report information related to the network status returned from the network, the partial data reception time difference information can be used to quickly check the status of each network and reduce or stop the transmission rate to the network which is judged abnormally, thereby improving the transmission performance of the simultaneous transmission service. Can be guaranteed and improved.

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 a RAM memory, a flash memory, a ROM memory, an EPROM memory, an 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 user terminal device. In the alternative, the processor and the storage medium may be included as separate components within the user terminal device.

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

According to the heterogeneous network-based simultaneous data transmission apparatus and method according to the present invention, a report related to the network status returned from the receiving device in the simultaneous transmission service environment in which the partial data divided data is transmitted and received using a plurality of heterogeneous networks It overcomes the limitations of the existing technology in that the information reception can be used to quickly check the status of each network and reduce or stop the transmission rate to an abnormal network, thereby ensuring and improving the transmission performance of the simultaneous transmission service. According to the present invention, there is not only the use of the related technology but also the possibility of marketing or sales of the applied device as well as the degree to which it can be clearly realized in reality.

400: management device
410: partial data selection unit 420: communication unit
430: transmission control unit

Claims (12)

A partial data selection unit for selecting the partial data divided from the transmission target data for each of the two or more access networks based on a data transfer rate of two or more access networks;
A communication unit which transmits each partial data selected for each of the two or more access networks to a receiving device through a corresponding access network; And
Receive network state related information based on two or more partial data having neighboring sequence information among the partial data transmitted through a specific access network among the two or more access networks, and respond to the reception state of the network state related information. And a transmission control unit determining whether to adjust the data transmission rate to the specific access network based on the reception state information. The method of claim 1,
The transmission control unit,
Based on the reception state information corresponding to the specific access network, network state related information about two or more pieces of partial data having neighboring sequence information is not received so as to pass a specific reference time or network state related information is not received. When the number of times of reception occurs more than a certain reference number, heterogeneous network-based simultaneous data transmission apparatus, characterized in that to determine the status of the specific access network or more to adjust the data transmission rate. 3. The method of claim 2,
The transmission control unit,
And determining the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of the two or more access networks. The method of claim 1,
The network state related information,
Each of the two or more pieces of partial data having neighboring order information among the pieces of partial data transmitted through the specific access network includes partial data reception time difference information of measuring partial data reception time differences received by the receiving device. Heterogeneous network-based data transmission device. The method of claim 1,
The transmission control unit,
After stopping the partial data transmission to the specific access network by adjusting the data transmission rate to the specific access network, and transmits through the remaining access network other than the specific access network among the two or more access networks every specific status check period. And copying the at least two partial data having neighboring order information among the partial data, and transmitting the copied at least two partial data to the receiving device through the specific access network. The method of claim 5, wherein
The transmission control unit,
When the network state related information is received from the receiving device in response to the copied two or more partial data transmitted through the specific access network, heterogeneous network, characterized in that to cancel the transmission of the partial data to the specific access network. Based data transmission device. A partial data selection step of selecting the partial data divided from the data to be transmitted according to the two or more access networks on the basis of the data transmission rate for each of the two or more access networks;
A partial data transmission step of transmitting each partial data selected for each of the two or more access networks to a receiving device through a corresponding access network;
A related information receiving step of receiving, from the receiving apparatus, network state related information based on at least two partial data having neighboring order information among partial data transmitted through a specific access network among the two or more access networks; And
And determining whether to adjust the data transmission rate to the specific access network based on the reception state information corresponding to the reception state of the network state related information. Way. The method of claim 7, wherein
The determination of the control step,
Based on the reception state information corresponding to the specific access network, network state related information about two or more pieces of partial data having neighboring sequence information is not received so as to pass a specific reference time or network state related information is not received. When the number of times of reception occurs more than a certain reference number, heterogeneous network-based simultaneous data transmission method characterized in that it is determined to be more than the state of the specific access network to adjust the data transmission rate. The method of claim 8,
And determining the specific reference time and the specific reference number for each access network based on a data transmission rate set corresponding to each of the two or more access networks. . The method of claim 7, wherein
The network state related information,
Each of the two or more pieces of partial data having neighboring order information among the pieces of partial data transmitted through the specific access network includes partial data reception time difference information of measuring partial data reception time differences received by the receiving device. Heterogeneous network-based data transmission method. The method of claim 7, wherein
After stopping the partial data transmission to the specific access network by adjusting the data transmission rate to the specific access network, and transmits through the remaining access network other than the specific access network among the two or more access networks every specific status check period. Copying the at least two partial data having neighboring order information among the partial data, and transmitting the copied at least two partial data to the receiving apparatus through the specific access network. How to send data simultaneously. The method of claim 11,
If the network state related information is received from the receiving device in response to the copied two or more partial data transmitted through the specific access network, canceling the interruption of the partial data transmission to the specific access network. Heterogeneous network-based data transmission method characterized by.

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