KR101209926B1 - Method for simultaneously transmitting data in heterogeneous network - Google Patents

Method for simultaneously transmitting data in heterogeneous network Download PDF

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Publication number
KR101209926B1
KR101209926B1 KR1020110094023A KR20110094023A KR101209926B1 KR 101209926 B1 KR101209926 B1 KR 101209926B1 KR 1020110094023 A KR1020110094023 A KR 1020110094023A KR 20110094023 A KR20110094023 A KR 20110094023A KR 101209926 B1 KR101209926 B1 KR 101209926B1
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KR
South Korea
Prior art keywords
partial data
network
data
order information
transmission
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KR1020110094023A
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Korean (ko)
Inventor
장재성
김경훈
한경흠
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에스케이텔레콤 주식회사
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Priority to KR1020110094023A priority Critical patent/KR101209926B1/en
Priority to CN201280045572.0A priority patent/CN103814602B/en
Priority to PCT/KR2012/007458 priority patent/WO2013042920A2/en
Application granted granted Critical
Publication of KR101209926B1 publication Critical patent/KR101209926B1/en
Priority to US14/217,839 priority patent/US9258737B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention can be used to quickly detect / confirm partial data loss per network in an environment that provides a simultaneous transmission service that divides data for data transmission and reception and transmits / receives using a plurality of heterogeneous networks. Disclosed is a heterogeneous network-based data transmission service method. In the heterogeneous network-based data transmission service method of the present invention, a management device divides data to be transmitted into two or more pieces of partial data, selects the two or more pieces of data for each access network, and the management device assigns the two or more pieces of data. Inserting the split order information, inserting the network transmission order information corresponding to the access network to be transmitted to the selected partial data for each access network, and transmits through the two or more access network, the receiving device through the two or more access network Based on the network transmission order information inserted in the partial data for each access network received, the partial data lost for each access network is detected, and based on the split order information inserted in each partial data received through the two or more access networks. To reorder and combine partial data It includes compositions.

Description

Heterogeneous network-based data transmission service method {METHOD FOR SIMULTANEOUSLY TRANSMITTING DATA IN HETEROGENEOUS NETWORK}

The present invention relates to a heterogeneous network-based data simultaneous transmission service method, and more particularly, in an environment for providing a simultaneous transmission service for splitting data for data transmission and reception and transmitting / receiving using a plurality of heterogeneous networks. The present invention relates to a heterogeneous network-based data transmission service method, a method of operating a management device and a management device, and a method of operating a receiving device and a receiving device, which propose a method of quickly detecting and confirming partial data loss per network. .

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. Recently, Long Term Evolution (LTE) networks have been actively introduced.

The present method in which a terminal device uses a data service in a heterogeneous network environment in which a plurality of networks are mixed is a method in which a controllability of a provider is excluded by an access network selection method by directly changing a terminal device user It is a passive method when considering the position of the business operator.

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

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

SUMMARY OF THE INVENTION The present invention has been created in view of the above circumstances, and an object of the present invention is to provide a management apparatus for splitting transmission data into two or more pieces of partial data, selecting the two or more pieces of data for each access network, and managing the data. If the device inserts division order information into the at least two partial data, inserts network transmission order information corresponding to the access network transmitted to the selected partial data for each of the access networks, and transmits through the at least two access networks. Based on the network transmission order information inserted into the partial data for each access network received through the two or more access networks, the partial data lost for each access network is detected, and each partial data received through the two or more access networks. Partial day based on split order information inserted in A reorder by providing a heterogeneous network based on the data broadcast service method of coupling, to provide an environment that can rapidly detect / determine the partial data loss (loss) by the network.

The present invention was created in view of the above circumstances, and another object to be achieved in the present invention is to divide the data to be transmitted into two or more pieces of partial data, select the two or more pieces of data for each access network, and the two or more parts. Management apparatus and management for inserting division order information into data, inserting network transmission order information corresponding to a connection network transmitted to the selected partial data for each connection network, and transmitting the selected partial data through two or more of the connection networks; By providing a method of operating the device, to provide an environment that can quickly detect / confirm the partial data loss (network) for each network.

The present invention has been made in view of the above circumstances, and another object to be reached in the present invention is to receive the partial data divided from the data to be transmitted through two or more access networks, and then access received through the two or more access networks. Based on the network transmission order information inserted in the partial data for each network, the partial data lost for each access network is detected, and the partial data based on the split order information inserted in each partial data received through the two or more access networks. The present invention provides a receiving apparatus and a method of operating the receiving apparatus to rearrange and combine them, thereby providing an environment in which partial data loss can be quickly detected / confirmed for each network.

According to a first aspect of the present invention, there is provided a management apparatus comprising: a data dividing unit for dividing transmission target data into two or more partial data; A partial data selection unit for selecting the at least two partial data for each access network; A sequence information insertion unit inserting division order information into the at least two partial data and inserting network transmission sequence information corresponding to a connection network transmitted to the selected partial data for each connection network; And a communication unit configured to transmit the selected partial data through two or more of the access networks.

Preferably, a retransmission control unit for retransmitting the specific partial data according to the missing information when the lost information about specific partial data is returned based on the network transmission order information inserted into the partial data transmitted for each access network. It may further include.

A receiving apparatus according to a second aspect of the present invention for achieving the above object, the communication unit for receiving the partial data divided from the transmission target data through two or more access networks; A lost data detection unit detecting partial data lost for each access network based on network transmission order information inserted into the partial data for each access network received through the two or more access networks; And a partial data combiner configured to rearrange and combine the partial data based on the split order information inserted into each partial data received through the two or more access networks.

Preferably, as a result of detecting the partial data lost for each of the access networks, if the loss of the specific partial data is confirmed, the lost information on the specific partial data is provided through at least one of the two or more access networks. It further comprises a loss information providing unit.

In the heterogeneous network-based simultaneous data transmission service method according to the third aspect of the present invention for achieving the above object, the management apparatus divides the transmission target data into two or more partial data, and selects the two or more partial data for each access network. ; Inserting, by the management apparatus, division order information into the at least two pieces of partial data, and inserting network transmission order information corresponding to a connection network transmitted to the selected partial data for each connection network; The management device transmitting the selected partial data through two or more of the access networks; Detecting, by the receiver, the lost partial data for each access network based on the network transmission order information inserted into the partial data for each access network received through the two or more access networks; And rearranging and combining the partial data based on the split order information inserted into each partial data received through the two or more access networks.

A method of operating a management apparatus according to a fourth aspect of the present invention for achieving the above object comprises: a data partitioning step of dividing transmission target data into two or more partial data; A partial data selection step of selecting the at least two partial data for each access network; Inserting division order information into the at least two partial data and inserting network transmission order information corresponding to the access network transmitted to the selected partial data for each access network; And a partial data transmission step of transmitting the selected partial data through two or more of the access networks.

Preferably, when lost information about specific partial data is returned based on the network transmission order information inserted in the partial data transmitted for each access network, partial data retransmission for retransmitting the specific partial data according to the lost information is returned. It further comprises a step.

A method of operating a receiver according to a fifth aspect of the present invention for achieving the above object comprises the steps of: receiving a partial data divided from data to be transmitted through two or more access networks; A lost data detection step of detecting partial data lost for each access network based on network transmission order information inserted into the partial data for each access network received through the two or more access networks; And a partial data combining step of rearranging and combining the partial data based on the division order information inserted into each partial data received through the two or more access networks.

Preferably, as a result of detecting the partial data lost for each of the access networks, if the loss of the specific partial data is confirmed, the lost information on the specific partial data is provided through at least one of the two or more access networks. It may further include a loss information providing step.

Accordingly, according to the heterogeneous network-based simultaneous data transmission service method of the present invention, in the heterogeneous network environment, in the heterogeneous network environment, the management apparatus on the transmission side is partially divided into the data to be transmitted according to the data transmission rate for each access network. Insert network transmission order information for each network transmitting partial data separately from the split order information for reordering / combining data, and for each network based on the network order information of the partial data received for each network on the receiving device side. It is possible to immediately detect whether or not the partial data is lost and request retransmission, thereby effectively speeding up the time point at which the partial data is lost.

Therefore, according to the heterogeneous network-based data simultaneous transmission service method of the present invention, in providing a simultaneous transmission service, a method for quickly detecting / verifying partial data loss per network is proposed to improve the performance of the simultaneous transmission service. It can increase the reliability.

1 is a block diagram showing a heterogeneous network-based simultaneous data transmission service system according to a preferred embodiment of the present invention.
2 is a block diagram showing the configuration of a management apparatus according to a preferred embodiment of the present invention.
3 is a block diagram showing the configuration of a receiving apparatus according to a preferred embodiment of the present invention.
4 is an exemplary view showing a configuration of partial data transmitted from a management apparatus according to a preferred embodiment of the present invention.
FIG. 5 is a diagram illustrating transmission showing split order information / network transmission order information of partial data for each access network transmitted for each access network according to a preferred embodiment of the present invention.
6 is a flowchart illustrating a flow of a heterogeneous network-based simultaneous data transmission service method according to a preferred embodiment of the present invention.
7 is an operation flowchart showing a method of operating an apparatus according to a preferred embodiment of the present invention.
8 is an operation flowchart showing a method of operating a receiving apparatus according to an exemplary embodiment of the present invention.

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

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

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

Here, two or more networks, that is, heterogeneous networks, may include WCDMA, CDMA, WiBro, WLAN (WiFi), Long Term Evolution (LTE), and the like.

In the present invention, for convenience of description, a first network (hereinafter, referred to as a "3G network"), which refers to a wireless packet service network (WCDMA) of two or more networks, and a second wireless network (WiFi) Embodiments will be described with reference to two networks (hereinafter referred to as "WiFi networks"). Accordingly, the first network device 200 refers to a gateway GPRS support node (GGSN) device for operating a 3G network, that is, a wireless packet service network, and the second network device 300 is a WiFi network, It refers to an access point (AP) for operating a local area wireless network.

In addition, the heterogeneous network-based data concurrent transmission service 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).

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

In addition, the policy management apparatus (not shown) includes, for example, a receiver 100 and a management apparatus according to various network parameters and network state variations on heterogeneous networks including subscriber preferences, subscriber types, subscription plans, types of service target applications, and the like. The network selection policy is determined based on the network state information received from the 400 and provided to the receiving device 100 and the management device 400.

Accordingly, the heterogeneous network-based data transmission service according to the present invention divides one data between the reception device 100 and the management device 400 for data transmission and reception between the reception device 100 and the external device 500. The divided partial data is transmitted using a plurality of heterogeneous networks (eg, 3G and WiFi), and a simultaneous transmission service for combining the received partial data and restoring the original data is implemented.

Therefore, 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 networks (for example, 3G) are received at the receiving end. It is important to reorder the partial data for each network received through WiFi) according to the partitioning order in the reception buffer and combine the rearranged partial data to the original transmission target data.

However, if partial data loss occurs in some sections of a plurality of heterogeneous networks (eg, 3G and WiFi), the receiving buffer of the receiving side may not immediately recognize the partial data loss and wait for realignment. The problem is expected, and the time point of retransmitting the partial data lost on the transmitting side is delayed, and the performance degradation of the simultaneous transmission service is expected.

Accordingly, in the present invention, in providing a simultaneous transmission service, the present invention proposes a method for quickly detecting / verifying partial data loss for each network to improve the performance of the simultaneous transmission service.

To this end, the management apparatus 400 of the present invention divides the transmission target data into two or more partial data, selects the two or more partial data for each access network, inserts division order information into the two or more partial data, and Network transmission order information corresponding to the access network to be transmitted is inserted into the selected partial data for each access network, and the selected partial data is transmitted through two or more of the access networks.

More specifically, the management device 400, when receiving the transmission target data to be transmitted from the external device 500 to the receiving device 100 divides it into partial data.

The management apparatus 400 selects the partial data divided from the transmission target data for each connection network based on a preset data transmission rate for each connection network. Here, the preset data transmission rate for each access network may be provided / retained by a policy management device (not shown).

That is, the management device 400 may transmit a data transmission rate for each access network (eg, 3G and WiFi), that is, a first transmission rate for data transmission to the first network device 200 and a data transmission to the second network device 300. Confirming the second transmission rate for the second data, selecting first partial data to be transmitted to the first network apparatus 200 among the partial data divided from the transmission target data based on the confirmed transmission rate, The second partial data to be transmitted to the network device 300 is selected.

Then, the management apparatus 400 inserts division order information indicating the division order into each of two or more pieces of partial data divided from the transfer target data.

In addition, the management device 400 inserts network transmission order information corresponding to the access network transmitted to the selected partial data for each access network (eg, 3G and WiFi).

That is, the management device 400 inserts network transmission order information indicating the transmission order of transmission through the 3G network into each of the partial data selected in correspondence with the 3G network, and inserts the WiFi network into each of the partial data selected in response to the WiFi network. Insert network transmission sequence information indicating the transmission sequence to be transmitted through.

The management apparatus 400 transmits the selected partial data for each access network (eg, 3G and WiFi) through the access network (eg, 3G and WiFi).

That is, the management device 400 transmits a plurality of first partial data selected for the 3G network to the first network device 200 located in the 3G network, and the plurality of second partial data selected for the WiFI network. Is transmitted to the second network device 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 is the second part. The data is transmitted to the receiving apparatus 100.

The reception device 100 receives partial data through two or more access networks, and is lost for each access network based on network transmission order information inserted into the partial data for each access network received through the two or more access networks. The partial data are detected, and the partial data are rearranged and combined based on the split sequence information inserted into each partial data received through the two or more access networks.

That is, the reception apparatus 100 receives the first partial data distributed / transmitted according to the data transmission rate for each access network set by the management apparatus 400 from the first network apparatus 200 and stores the second partial data. 2 is received from the network device 300.

In addition, the reception apparatus 100 detects the partial data lost for each access network based on the network transmission order information inserted in the partial data for each access network received through two or more access networks (eg, 3G and WiFi). do.

That is, the reception apparatus 100 detects whether there is a partial data transmitted based on network transmission order information inserted in each of the first partial data received through the 3G network, and receives the second partial data received through the WiFi network. By detecting whether there is any partial data that is updated based on the network transmission order information inserted in each of the partial data, an operation of detecting the partial data lost for each network is performed.

Therefore, when it is confirmed that the specific partial data (for example, partial data of the 3G network) is lost, the reception apparatus 100 receives at least two or more access networks (for example, 3G and WiFi) from the lost information about the specific partial data. Provided to the management device 400 through any one access network (eg, 3G), the management device 100 may retransmit the corresponding partial data according to the lost information to the receiving device 100 again.

The receiving apparatus 100 rearranges and combines the partial data based on the split order information inserted into each partial data received through two or more access networks (eg, 3G and WiFi).

That is, the reception apparatus 100 temporarily stores each partial data received through two or more access networks (eg, 3G and WiFi) in a reception buffer and divides the sequence based on the split sequence information inserted into each partial data. Reorder partial data according to

Then, the reception apparatus 100 can generate original transmission target data by combining and combining the rearranged partial data according to the division order.

As described above, according to the present invention, the management apparatus 400 inserts network transmission order information for each network transmitting the partial data separately from the split order information for reordering / combining the partial data, and at the receiving apparatus 100 side. Based on the network order information of the partial data received for each network, it is possible to immediately detect whether the partial data for each network is lost and retransmit it quickly.

Hereinafter, the configuration of the management apparatus according to the present invention will be described in more detail with reference to FIG. 2.

The management apparatus 400 according to the present invention includes a data splitting unit 410 for dividing transmission target data into two or more partial data, a partial data selecting unit 420 for selecting the two or more partial data for each connection network, A sequence information insertion unit 430 for inserting division order information into the at least two partial data and inserting network transmission order information corresponding to a connection network transmitted to the selected partial data for each connection network; The communication unit 450 transmits through the access network. Here, the communication unit 450 refers to a communication module for interworking with the first network device 200 using the 3G network and for interworking with the second network device 300 using the WiFi network.

In addition, the management device 400 according to the present invention may further include a retransmission control unit 440.

When the data division unit 410 receives the transmission target data to be transmitted from the external device 500 to the receiver 100, the data division unit 410 divides the transmission target data into partial data.

The partial data selection unit 420 selects two or more partial data divided from the transmission target data for each access network.

That is, the partial data selection unit 420 selects the partial data divided from the transmission target data for each connection network based on the preset data transmission rate for each connection network. Here, the preset data transmission rate for each access network may be provided / retained by a policy management device (not shown).

Accordingly, the partial data selector 420 may include a data transmission rate for each access network (eg, 3G and WiFi), that is, a first transmission rate for transmitting data to the first network device 200 and data for the second network device 300. Checking the second transmission rate for transmission, selecting first partial data to be transmitted to the first network apparatus 200 among the partial data divided from the transmission target data based on the confirmed transmission ratio, and among the remaining partial data The second partial data to be transmitted to the second network device 300 is selected.

The sequence information insertion unit 430 inserts division order information into two or more pieces of partial data, and inserts network transmission order information corresponding to the connection network transmitted to the partial data selected for each connection network.

That is, the sequence information insertion unit 430 inserts division order information indicating the division order into each of two or more pieces of partial data divided by the data division unit 410 from the data to be transmitted.

In addition, the sequence information inserting unit 430 inserts network transmission sequence information corresponding to the access network transmitted to the partial data selected for each access network (eg, 3G and WiFi) by the partial data selection unit 420.

For example, the sequence information insertion unit 430 inserts network transmission sequence information indicating a transmission sequence transmitted through the 3G network into each of the partial data selected corresponding to the 3G network, and each of the partial data selected corresponding to the WiFi network. Insert network transmission order information indicating the transmission order transmitted through the WiFi network.

In this way, the sequence information inserting unit 430 inserts the split sequence information and the network transmission sequence information into the partial data and provides them to the communication unit 450.

Thus, an example of a partial data configuration in which division order information and network transmission order information are inserted will be described with reference to FIG. 4.

As shown in FIG. 4, one partial data divided by the data dividing unit 410 has an actual partial data packet A consisting of a header and data, and the sequence information inserting unit 430. ) Has a form in which the division order information b1 and the network transmission order information b2 are inserted. Preferably, the division order information b1 and the network transmission order information b2 are inserted into some fields of the header B having the address information encapsulated for transmission over each network.

The communication unit 450 transmits the partial data selected for each connection network through two or more corresponding connection networks.

That is, the communication unit 450 transmits the 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 device 300 located in the WiFi network, the first network device 200 transmits the first partial data to the receiving device 100, and the second network device 300 transmits the second partial data. To be transmitted to the receiving apparatus 100.

Thus, with reference to FIG. 5 will be described an example of the partition order information / network transmission order information of the partial data for each access network transmitted for each access network (eg, 3G and WiFi).

As shown in FIG. 5, when looking at the partial data transmitted for each access network (eg, 3G and WiFi) from the management apparatus 400 to the receiving apparatus 100, the first partial data and the second partial data according to the division order are shown. The 3rd part data, the 4th part data, the 5th part data, and the 8th part data are sequentially transmitted through 3G in order through the 3G.

Therefore, as shown in FIG. 5, the division order information 1 and the network transmission order information 1 for the first partial data transmitted through 3G, and the division order information 2 and the network transmission order for the second partial data. The split order information (6) and the network transfer order information (3) are inserted into the information (2) and the third partial data, and the split order information (7) and the network transfer order information (4) are inserted into the fourth partial data. Split order information (3) and network transmission order information (1) are included in the first partial data transmitted through the split order information (4) and network transmission order information (2), and the third partial data are divided in the second partial data. In the order information 5, the network transmission order information 3, and the fourth partial data, the division order information 8 and the network transmission order information 4 are inserted.

The retransmission controller 440 retransmits the specific partial data according to the lost information when the lost information about the specific partial data is returned based on the network transmission order information inserted into the partial data transmitted for each access network. do.

In more detail, the retransmission control unit 440 may lose the specific partial data (eg, c of FIG. 5) based on the network transmission order information inserted into the partial data transmitted for each access network from the receiving apparatus 100. When the information (eg Nack) is returned, specific partial data according to the lost information may be retransmitted through the corresponding 3G network or another network (eg WiFi).

Hereinafter, the configuration of the receiving apparatus according to the present invention will be described in more detail with reference to FIG. 3.

Receiving apparatus 100 according to the present invention, the communication unit 110 for receiving the partial data divided from the transmission target data through two or more connection networks, and inserted into the partial data for each connection network received through the two or more connection networks. Based on the network transmission order information, the lost data detection unit 120 detects the partial data lost for each access network, and the partial based on the split order information inserted in each partial data received through the two or more access networks. And a partial data combiner 140 for rearranging and combining the data.

In addition, the reception apparatus 100 according to the present invention may further include a loss information providing unit 130.

The communication unit 110 receives the partial data dividedly transmitted from the first network device 200 and the second network device 300.

That is, the communication unit 110 receives from the first network device 200 the first partial data distributed / transmitted according to the data transmission rate for each access network set in the management device 400 and the second partial data to the second network. It receives from the device 300.

The lost data detection unit 120 detects lost partial data for each access network based on network transmission order information inserted in partial data for each access network received through two or more access networks (eg, 3G and WiFi). .

That is, the lost data detection unit 120 detects whether there is a partial data transmitted based on the network transmission order information inserted in each of the first partial data received through the 3G network, and receives the received partial data through the WiFi network. By detecting whether there is any partial data that has been transferred based on the network transmission order information inserted in each of the two pieces of data, an operation of detecting the partial data lost for each network is performed.

For example, when partial data as shown in FIG. 5 is transmitted for each access network (eg, 3G and WiFi), the lost data detector 120 may perform a network transmission sequence of the partial data received for each 3G network and WiFi network. You will see the information.

At this time, assuming that c partial data received through the 3G network is lost, the lost data detection unit 120, after confirming the network transmission order information 1,2 through the 3G network will check 4 without 3, It is possible to immediately detect that partial data of the network transmission sequence information 3 is lost.

The loss information providing unit 130 detects the partial data lost for each access network, and when it is confirmed that the specific partial data is lost, the loss information for the specific partial data is connected to at least one of the two or more access networks. Provided through the network.

In other words, the loss information providing unit 130 detects the partial data lost for each access network in the lost data detection unit 120, and when it is confirmed that the specific partial data (for example, c of FIG. 5) is lost, the lost information is immediately lost. Lost information (e.g., Nack) for the partial data of the specific partial data, that is, network transmission order information (3) received through the 3G network, is connected to at least one of the two or more access networks (e.g., 3G and WiFi). : 3G) can be provided to the management device (400).

Accordingly, the management device 400 will retransmit specific partial data according to the lost information, that is, partial data of the network transmission order information 3 received through the 3G network, and thus the reception apparatus 100 retransmits the lost partial data. Can be sent.

The partial data combiner 140 rearranges and combines the partial data based on the split sequence information inserted into each partial data received through two or more access networks.

That is, the partial data combiner 140 temporarily stores each partial data received through the communication unit 110 in the reception buffer and divides the partial data according to the split order based on the split sequence information inserted into the partial data. Realign.

Of course, even if the partial data is lost, the lost data is quickly retransmitted by the lost data detection unit 120 and the lost information providing unit 130 as described above through fast loss detection / loss information for each network. This will also speed up the time the partial data is rearranged in the receive buffer.

The partial data combiner 140 may generate original transmission target data by combining and combining rearranged partial data according to the division order.

As described above, according to the heterogeneous network-based simultaneous data transmission service system according to the present invention, in the heterogeneous network environment, in the simultaneous transmission by dividing the transmission target data according to the data transmission rate for each access network, the transmitting side The management device inserts network transmission order information for each network transmitting the partial data separately from the split order information for reordering / combining the partial data, and receives the network order information of the partial data received for each network on the receiving device side. Based on this, it is possible to immediately detect whether the partial data of each network is lost and to request retransmission, thereby effectively speeding up the point of time when the lost partial data is retransmitted.

Therefore, according to the heterogeneous network-based data simultaneous transmission service system according to the present invention, in providing a simultaneous transmission service, a method for quickly detecting and confirming partial data loss for each network is proposed to improve the performance of the simultaneous transmission service. And increase the reliability.

Hereinafter, a heterogeneous network-based data transmission method according to an embodiment of the present invention will be described with reference to FIGS. 6 to 8. Here, for convenience of description, the components shown in FIGS. 1 to 5 will be described with reference to corresponding reference numerals.

First, a heterogeneous network-based simultaneous data transmission method according to a preferred embodiment of the present invention will be described with reference to FIG. 6.

More specifically, the management device 400, when receiving the transmission target data to be transmitted from the external device 500 to the receiving device 100 divides it into partial data (S10).

The management apparatus 400 selects the partial data divided from the transmission target data for each connection network based on the preset data transmission rate for each connection network (S20). Here, the preset data transmission rate for each access network may be provided / retained by a policy management device (not shown).

That is, the management device 400 may transmit a data transmission rate for each access network (eg, 3G and WiFi), that is, a first transmission rate for data transmission to the first network device 200 and a data transmission to the second network device 300. Confirming the second transmission rate for the second data, selecting first partial data to be transmitted to the first network apparatus 200 among the partial data divided from the transmission target data based on the confirmed transmission rate, The second partial data to be transmitted to the network device 300 is selected.

Then, the management device 400 inserts division order information indicating the division order into each of two or more pieces of partial data divided from the transmission target data, and is connected to the selected partial data for each connection network (eg, 3G and WiFi). The network transmission order information corresponding to the network is inserted (S30).

That is, the management device 400 inserts network transmission order information indicating the transmission order of transmission through the 3G network into each of the partial data selected in correspondence with the 3G network, and inserts the WiFi network into each of the partial data selected in response to the WiFi network. Insert network transmission sequence information indicating the transmission sequence to be transmitted through.

In addition, the management device 400 transmits the selected partial data for each access network (eg, 3G and WiFi) through the corresponding access network (eg, 3G and WiFi) (S40 and S45).

That is, the management device 400 transmits a plurality of first partial data selected for the 3G network to the first network device 200 located in the 3G network, and the plurality of second partial data selected for the WiFI network. Is transmitted to the second network device 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 is the second part. The data is transmitted to the receiving apparatus 100.

The receiving device 100 receives, from the first network device 200, first partial data distributed / transmitted according to a data transmission rate for each access network set by the management device 400, and receives the second partial data from the second network. It receives from the device 300.

In addition, the reception apparatus 100 detects the partial data lost for each access network based on the network transmission order information inserted in the partial data for each access network received through two or more access networks (eg, 3G and WiFi). (S50).

That is, the reception apparatus 100 detects whether there is a partial data transmitted based on network transmission order information inserted in each of the first partial data received through the 3G network, and receives the second partial data received through the WiFi network. By detecting whether there is any partial data that is updated based on the network transmission order information inserted in each of the partial data, an operation of detecting the partial data lost for each network is performed.

Therefore, when it is confirmed that the specific partial data (for example, partial data of the 3G network) is lost, the reception apparatus 100 receives at least two or more access networks (for example, 3G and WiFi) from the lost information about the specific partial data. Provided to the management device 400 through any one access network (eg, 3G) (S60), the management device 100 may retransmit the corresponding partial data according to the lost information to the receiving device 100 again. (S65).

The receiving apparatus 100 rearranges and combines the partial data based on the split sequence information inserted into each partial data received through two or more access networks (eg, 3G and WiFi) (S70).

That is, the reception apparatus 100 temporarily stores each partial data received through two or more access networks (eg, 3G and WiFi) in a reception buffer and divides the sequence based on the split sequence information inserted into each partial data. Reorder partial data according to

Then, the reception apparatus 100 can generate original transmission target data by combining and combining the rearranged partial data according to the division order.

Hereinafter, an operation method of the management device according to the present invention will be described in more detail with reference to FIG. 7.

In the operation method of the management apparatus according to the present invention, when receiving the transmission target data to be transmitted from the external device 500 to the receiving apparatus 100, the transmission target data is divided into partial data (S100).

In the operation method of the management apparatus according to the present invention, two or more pieces of partial data divided from the transmission target data are selected for each access network (S110).

That is, the operation method of the management apparatus according to the present invention selects the partial data divided from the transmission target data for each access network based on the preset data transmission rate for each access network.

Accordingly, the operating method of the management apparatus according to the present invention includes a data transmission rate for each access network (eg, 3G and WiFi), that is, a first transmission rate and a second network device 300 for data transmission to the first network device 200. By checking the second transmission rate for data transmission to the first network device, selecting the first partial data to be transmitted to the first network apparatus 200 among the partial data divided from the transmission target data based on the confirmed transmission ratio, Among the data, the second partial data to be transmitted to the second network device 300 is selected.

In the operation method of the management apparatus according to the present invention, the division order information is inserted into two or more pieces of partial data, and the network transmission order information corresponding to the connection network transmitted to the selected partial data for each connection network is inserted (S120).

That is, in the operation method of the management apparatus according to the present invention, the division order information indicating the division order indicating the division order to each of the two or more pieces of partial data divided in the transmission target data in step S100.

In addition, in the operation method of the management device according to the present invention, in step S110 inserts network transmission order information corresponding to the access network transmitted to the partial data selected for each access network (eg, 3G and WiFi).

For example, in the method of operating the management apparatus according to the present invention, the network transmission order information indicating the transmission order to be transmitted through the 3G network is inserted into each of the partial data selected corresponding to the 3G network in step S100, and the WiFi network is inserted into the WiFi network. Corresponding network insertion order information indicating a transmission order to be transmitted through the WiFi network is inserted into each of the selected partial data.

Thus, as shown in FIG. 4, the divided partial data has a form of an actual partial data packet A consisting of a header and data, and includes partition order information b1 and network transmission order information. (b2) has the inserted band. Preferably, the division order information b1 and the network transmission order information b2 are inserted into some fields of the header B encapsulated for transmission over each network.

In operation S130, the method for operating the management apparatus according to the present invention transmits the partial data selected for each access network through two or more access networks.

That is, in the operating method of the management apparatus according to the present invention, a 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 to the second network device 300 located in the WiFi network, the first network device 200 transmits the first partial data to the receiving device 100 and the second network device 300. Transmits the second partial data to the receiving apparatus 100.

Thus, as shown in Figure 5, the operation method of the management device according to the present invention, the split order information (1) and network transmission order information (1), the second partial data to the first partial data transmitted over 3G To the partition order information (2) and network transmission order information (2), to the third partial data, to the partition order information (6) and to the network transmission order information (3), to the fourth partial data, to the partition order information (7) and to network transmission. The order information (4) is inserted, the split order information (3) and network transmission order information (1) in the first partial data transmitted via WiFi, the split order information (4) and network transmission order information in the second partial data. (2) The division order information 5 and the network transmission order information 3 can be inserted into the third partial data, and the division order information 8 and the network transmission order information 4 into the fourth partial data.

On the other hand, in the operating method of the management device according to the present invention, if the loss information for the specific partial data is returned based on the network transmission order information inserted in the partial data transmitted for each access network (S140), the lost information The specific partial data is retransmitted (S150).

In more detail, the operation method of the management apparatus according to the present invention includes specific partial data (for example, c of FIG. 5) based on network transmission order information inserted into partial data transmitted for each access network from the receiving apparatus 100. ), When the lost information (eg, Nack) is returned, specific partial data according to the lost information can be retransmitted through the corresponding 3G network or another network (eg, WiFi).

Hereinafter, an operation method of the receiver according to the present invention will be described in detail with reference to FIG. 8.

In the operation method of the reception device according to the present invention, the partial data transmitted from the first network device 200 and the second network device 300 is received (S200).

That is, in the method of operating the reception device according to the present invention, the first part data distributed / transmitted according to the data transmission rate for each access network set in the management device 400 is received from the first network device 200 and the second part. The data is received from the second network device 300.

A method of operating a receiver according to the present invention is based on network transmission order information inserted in partial data for each access network received through two or more access networks (eg, 3G and WiFi), and partial data lost for each access network. It is detected (S210).

That is, the operation method of the receiving apparatus according to the present invention detects whether there is a partial data transmitted based on the network transmission order information inserted in each of the first partial data received through the 3G network, and through the WiFi network. By detecting whether there is any partial data that is updated based on the network transmission order information inserted in each of the received second partial data, an operation of detecting the partial data lost for each network is performed.

For example, when partial data as shown in FIG. 5 is transmitted for each access network (eg, 3G and WiFi), an operation method of the receiver according to the present invention may include partial data received for each 3G network and WiFi network. You will see the network transmission order information.

At this time, assuming that c partial data received through the 3G network is lost, the operation method of the receiving apparatus according to the present invention, after confirming the network transmission order information 1,2 through the 3G network will check 4 without 3. Therefore, it is possible to immediately detect / confirm that partial data of the network transmission sequence information 3 is lost.

In the operation method of the receiving apparatus according to the present invention, when the lost partial data is detected for each access network, if the loss of the specific partial data is confirmed (S220), the loss information for the specific partial data is included in the two or more access networks. It provides through at least one access network (S230).

In other words, in the method of operating the receiving apparatus according to the present invention, if the loss of the specific partial data (for example, c of FIG. 5) is detected as the result of detecting the partial data lost for each access network, the specific partial data immediately lost 3G Lost information (e.g., Nack) for partial data of the network transmission order information (3) received through the network is transmitted through at least one access network (e.g., 3G) of two or more access networks (e.g., 3G and WiFi). It can be provided to the management device (400).

Accordingly, the management apparatus 400 will retransmit specific partial data according to the lost information, that is, partial data of the network transmission order information 3 received through the 3G network, and thus the operating method of the receiving apparatus according to the present invention is lost. The partial data can be received again.

In the operation method of the receiving apparatus according to the present invention, the partial data are rearranged and combined based on the split sequence information inserted into each partial data received through two or more access networks (S240).

That is, the method of operating the reception apparatus according to the present invention temporarily stores each received partial data in the reception buffer and rearranges the partial data according to the division order based on the division order information inserted into each partial data.

Of course, even if there is missing partial data, the operation method of the receiving apparatus according to the present invention, since the lost partial data is quickly retransmitted through the fast loss detection / loss information for each network as described above in the receiving buffer The time for partial data reordering will also be faster.

In addition, in the method of operating the receiver according to the present invention, by combining and combining the rearranged partial data according to the division order, the original transmission target data can be generated, and the corresponding original transmission target data being executed internally. Can be provided to the application (S250).

As described above, according to the heterogeneous network-based simultaneous data transmission service method according to the present invention, in the heterogeneous network environment, in the simultaneous transmission by dividing the transmission target data according to the data transmission rate for each access network, the transmitting side The management device inserts network transmission order information for each network transmitting the partial data separately from the split order information for reordering / combining the partial data, and receives the network order information of the partial data received for each network on the receiving device side. Based on this, it is possible to immediately detect whether the partial data of each network is lost and to request retransmission, thereby effectively speeding up the point of time when the lost partial data is retransmitted.

Therefore, according to the heterogeneous network-based data simultaneous transmission service method according to the present invention, in providing a simultaneous transmission service, a method for quickly detecting / verifying partial data loss per network is proposed to improve performance of the simultaneous transmission service. And increase the reliability.

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 data simultaneous transmission service method according to the present invention, in providing a simultaneous transmission service, a method for quickly detecting / verifying partial data loss per network is proposed to improve performance of the simultaneous transmission service. As the reliability can be increased, the industrial applicability is not only sufficient due to the limitation of the existing technology, but also the possibility of marketing or operating the applied device is not only sufficient for the related technology, but also practically clearly implemented. This is an invention.

400: management device
410: data partitioning unit
420: partial data selection unit
430: sequence information insertion unit
440: retransmission control unit
450: communication unit

Claims (9)

A data dividing unit dividing the transmission target data into two or more partial data;
A partial data selection unit for selecting the at least two partial data for each access network;
A sequence information insertion unit inserting division order information into the at least two partial data and inserting network transmission sequence information corresponding to a connection network transmitted to the selected partial data for each connection network; And
And a communication unit for transmitting the selected partial data through two or more of the access networks. The method of claim 1,
The apparatus further includes a retransmission control unit configured to retransmit the specific partial data according to the lost information when the lost information about the specific partial data is returned based on the network transmission order information inserted into the partial data transmitted for each access network. Management device characterized in that. A communication unit which receives the partial data divided from the transmission target data through two or more access networks;
A lost data detection unit detecting partial data lost for each access network based on network transmission order information inserted into the partial data for each access network received through the two or more access networks; And
And a partial data combiner for rearranging and combining the partial data based on the split order information inserted into each partial data received through the two or more access networks. The method of claim 3, wherein
As a result of detecting the partial data lost for each of the access networks, if the loss of the specific partial data is confirmed, loss information for providing the lost information for the specific partial data through at least one of the two or more access networks is provided. Receiving device further comprises a unit. A management device dividing the transmission target data into two or more partial data, and selecting the two or more partial data for each access network;
Inserting, by the management apparatus, division order information into the at least two pieces of partial data, and inserting network transmission order information corresponding to a connection network transmitted to the selected partial data for each connection network;
The management device transmitting the selected partial data through two or more of the access networks;
Detecting, by the receiver, the lost partial data for each access network based on the network transmission order information inserted into the partial data for each access network received through the two or more access networks; And
And receiving, by the receiving device, reordering and combining the partial data based on the split order information inserted into the partial data received through the two or more access networks. A data division step of dividing the transmission target data into two or more partial data;
A partial data selection step of selecting the at least two partial data for each access network;
Inserting division order information into the at least two partial data and inserting network transmission order information corresponding to the access network transmitted to the selected partial data for each access network; And
And a partial data transmission step of transmitting the selected partial data through two or more of the access networks. The method according to claim 6,
The method further includes a partial data retransmission step of retransmitting the specific partial data according to the lost information when the lost information about the specific partial data is returned based on the network transmission order information inserted into the partial data transmitted for each access network. Operating method of the management device, characterized in that. A partial data receiving step of receiving the partial data divided from the transmission target data through two or more access networks;
A lost data detection step of detecting partial data lost for each access network based on network transmission order information inserted into the partial data for each access network received through the two or more access networks; And
And a partial data combining step of rearranging and combining the partial data based on the division order information inserted into each partial data received through the two or more access networks. The method of claim 8,
As a result of detecting partial data lost for each access network, if loss of specific partial data is confirmed, loss information for providing the specific partial data is provided through at least one of the two or more access networks. Method of operation of the receiving device further comprises the step.
KR1020110094023A 2011-09-19 2011-09-19 Method for simultaneously transmitting data in heterogeneous network KR101209926B1 (en)

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KR1020110094023A KR101209926B1 (en) 2011-09-19 2011-09-19 Method for simultaneously transmitting data in heterogeneous network
CN201280045572.0A CN103814602B (en) 2011-09-19 2012-09-18 The apparatus and method of transmission service while for supporting the data based on Multi net voting
PCT/KR2012/007458 WO2013042920A2 (en) 2011-09-19 2012-09-18 Device and method for supporting a simultaneous transmission service of multiple network based data
US14/217,839 US9258737B2 (en) 2011-09-19 2014-03-18 Device and method for simultaneously transmitting data in multi-network

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CN114679395A (en) * 2022-05-27 2022-06-28 鹏城实验室 Data transmission detection method and system for heterogeneous network

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