KR102003195B1 - Apparatus and method for simultaneously transmitting data in heterogeneous network - Google Patents

Apparatus and method for simultaneously transmitting data in heterogeneous network Download PDF

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KR102003195B1
KR102003195B1 KR1020110080234A KR20110080234A KR102003195B1 KR 102003195 B1 KR102003195 B1 KR 102003195B1 KR 1020110080234 A KR1020110080234 A KR 1020110080234A KR 20110080234 A KR20110080234 A KR 20110080234A KR 102003195 B1 KR102003195 B1 KR 102003195B1
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network
connection
data
transmission
data transmission
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KR1020110080234A
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Korean (ko)
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KR20130017663A (en
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김정수
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에스케이텔레콤 주식회사
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    • 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
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0247—Traffic management, e.g. flow control or congestion control based on conditions of the access network or the infrastructure network
    • 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
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

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  • Computer Networks & Wireless Communication (AREA)
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  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention discloses a heterogeneous network-based data transmission service method. That is, the policy providing step of the policy management apparatus providing a network selection policy including the performance determination information to the transmitting apparatus; A network connection step of the transmission device accessing a specific network of two or more connection target networks according to the network selection policy; A traffic generation step of the transmission device accessing a specific device based on the access address included in the performance determination information and performing data transmission and reception through the specific network; A connection maintenance determination step of determining, by the transmitter, whether to maintain the connection to the specific network by comparing performance information of at least one of data transmission amount and response time corresponding to the data transmission and reception with a threshold value included in the performance determination information; ; And a data transmission step of transmitting and selecting, by the transmitter, the partial data divided from the transmission target data according to whether the transmission device maintains the connection to the specific network, thereby efficiently controlling the optimum network device connection to the terminal device. Efficient and reliable heterogeneous network-based data transmission service can be implemented, and data transmission speed can be increased through data division transmission.

Figure R1020110080234

Description

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

The present invention relates to a data simultaneous transmission method, and more particularly, in a heterogeneous network environment, in segmenting and simultaneously transmitting data to be transmitted according to a network selection policy, a specific network is connected in response to the network selection policy. Heterogeneous network-based data transmission service method that performs network connection switching by determining whether to maintain the connection through performance determination on the network, the operation method of the transmission device and the transmission device, and the policy management device and the policy management device. It relates to a method of operation.

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 a recent short-range wireless network. Recently, LTE (Long Term Evolution) network is actively introduced.

In the heterogeneous network environment in which several networks are mixed, the current method of using the data service by the terminal device is a method of selecting an access network by direct change of the user of the terminal device, which excludes operator controllability. Because it is a method, it can be said to be passive in consideration of the business operator's position.

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, in a heterogeneous network environment in which several networks are mixed, a new service scheme for actively selecting an access network of a terminal device according to a network state and efficient data transmission using the selected network is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a network selection policy in a policy management device to a transmission device, wherein the transmission device includes a set number of times included in the network selection policy and Attempts to connect to a specific network among two or more connected target networks based on the access restriction information of at least one of the set time, determines the network switching according to whether the connection to the specific network is successful, and responds to the network switching determination. It provides heterogeneous network-based data transmission service method that selects and transmits the divided partial data from the transmission target data, and decides whether to maintain the connection through performance judgment on the network when connecting to a specific network in response to the network selection policy. To switch network access have.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and another object of the present invention is to provide a network selection policy to a transmitting apparatus, wherein the transmitting apparatus provides a network selection policy to the transmitting apparatus. Accordingly, accesses a specific network among two or more access target networks, accesses a specific device based on the access address included in the performance determination information, performs data transmission and reception through the specific network, and a data transmission amount corresponding to the data transmission and reception; The performance information of at least one of the response times is compared with the threshold included in the performance determination information to determine whether to maintain the connection to the specific network, and is divided from the transmission target data according to whether to maintain the connection to the specific network. Heterogeneous network-based data that selects and transmits partial data By providing the emitter broadcast service method to determine whether or not keep up with the performance determined for the network when connected to a particular network, in response to network selection policy it is to perform a network connection switching.

The present invention has been made in view of the above circumstances, and another object of the present invention is to attempt to connect to a specific network among two or more connection target networks according to a network selection policy, and successfully connect to the specific network. When a network is determined according to whether or not, and a transmitter and a method of operating the same are selected to transmit the selected partial data from the transmission target data in response to the network switching decision, and when accessing a specific network in response to the network selection policy, It is to perform the network access switch by determining whether to maintain the connection through the performance judgment on the network.

The present invention has been made in view of the above circumstances, and another object of the present invention is to determine a performance included in the network selection policy by accessing a specific network among two or more connection target networks according to the network selection policy. It determines whether to maintain the connection to the specific network based on the information, and selects the network by providing a transmission apparatus and operation method for selecting and transmitting the divided partial data from the transmission target data according to whether to maintain the connection to the specific network When accessing a specific network in response to a policy, the network connection switch is performed by determining whether to maintain the connection through the performance judgment of the network.

A transmission apparatus according to the first aspect of the present invention for achieving the above object, attempts to connect to a specific network of two or more connection target network according to the network selection policy, and determines the network switch depending on whether the connection is successful part; A control unit for selecting the partial data divided from the transmission target data in response to the network switching determination; And a communication unit for transmitting the selected partial data.

Preferably, the access determination unit, the connection attempt is performed the setting number of times based on at least one connection restriction information of the setting number of times and the setting time included in the network selection policy, or the connection attempt during the setting time Or when the connection attempt is performed for the set number of times and the connection attempt is performed for the set time.

Preferably, when the network switch is determined, the controller selects the partial data divided from the transmission target data for data transmission through one or more networks except for the specific network among the two or more networks. .

The transmitter according to the second aspect of the present invention for achieving the above object is connected to a specific network of two or more access target networks according to a network selection policy and based on the performance determination information included in the network selection policy. A connection determination unit determining whether to maintain a connection to the network; A controller selecting partial data divided from the data to be transmitted according to whether to maintain the connection to the specific network; And a communication unit for transmitting the selected partial data.

Preferably, the access determination unit is connected to a specific device based on the access address included in the performance determination information to perform data transmission and reception through the specific network, at least of the data transmission amount and response time corresponding to the data transmission and reception When any one of the performance information is less than the threshold value included in the performance determination information, it is characterized in that the connection to the particular network is maintained.

Preferably, the control unit, when it is impossible to maintain the connection to the specific network, selects the partial data divided from the transmission target data for data transmission through one or more networks except the specific network of the two or more networks Characterized in that.

A method of operating a transmitter according to a third aspect of the present invention for achieving the above object comprises a connection attempt step of attempting to connect to a specific network of two or more connection target networks according to a network selection policy; An access determining unit determining a network switch depending on whether the access to the specific network is successful; A data selection step of selecting partial data divided from transmission data in response to the network switching determination; And a data transmission step of transmitting the selected partial data.

A method of operating a transmitter according to a fourth aspect of the present invention for achieving the above object includes a network connection step of connecting to a specific network of two or more connection target networks according to a network selection policy; A connection determination step of determining whether to maintain a connection to the specific network based on the performance determination information included in the network selection policy; A data selection step of selecting partial data divided from the data to be transmitted according to whether to maintain the connection to the specific network; And a data transmission step of transmitting the selected partial data.

Accordingly, according to the heterogeneous network-based simultaneous data transmission service method of the present invention, in the heterogeneous network environment, the data to be transmitted is divided and transmitted simultaneously according to the network selection policy, and connected to a specific network in response to the network selection policy. By determining whether or not to maintain the connection through performance determination on the network, the network connection switching is performed, thereby efficiently and efficiently providing heterogeneous network-based data transmission service with high efficiency by controlling optimal network device access to the terminal device. In addition, it is possible to increase the data transmission speed through data division transmission.

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

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

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

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

The heterogeneous network-based data transmission service according to the present invention implements a configuration in which data is divided and transmitted and received using a plurality of heterogeneous networks for data transmission and reception between the terminal device 100 and the external device 500.

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

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

In addition, the policy management apparatus 600 may include, for example, a terminal apparatus 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. Based on the network state information received from 400, a heterogeneous network environment, that is, a network including a relative utilization ratio between networks so that data to be transmitted can be divided to correspond to the number of networks for simultaneous data transmission using a 3G network and a WiFi network. The selection policy may be determined and provided to the terminal device 100 and the management device 400.

Meanwhile, the heterogeneous network may correspond to various access networks including, for example, WCDMA, CDMA, WiBro, WLAN (WiFi), and Long Term Evolution (LTE). However, in this embodiment, for convenience of description, a wireless packet service network A description will be given of the first network (hereinafter referred to as "3G network") and the second network (hereinafter referred to as "WiFi network"), which refer to (WCDMA) and the short-range wireless network (WiFi).

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

In addition, the terminal device 100 and the management device 400 may also be a transmission device according to the uplink process and the downlink process according to the subject that transmits data using a service flow, that is, data simultaneous transmission service. It can also be a receiver. In the present embodiment, for convenience of description, assuming a description of a terminal device 100 that performs data transmission and reception in a heterogeneous network environment, and assumes a management device 400 that provides simultaneous data transmission service to the terminal device 100. This will be described.

The terminal device 100 attempts to access the WiFi network in response to the network selection policy, and determines network switching according to whether the connection is successful.

That is, the terminal device 100 attempts to connect to the second network device 300 located in the WiFi network according to the network selection policy received from the policy management device 600, that is, the second network device 300. Authentication is performed and an access address is assigned.

In this regard, the terminal device 100 attempts to connect to the second network device 300 for, for example, a set number of times and a set time according to the access restriction information included in the network selection policy.

In this case, the terminal apparatus 100 may perform an access attempt for the second network apparatus 300, or perform an access attempt for a setting time, or perform an access attempt for the setting time and during the setting time. If performed, the connection to the WiFi network is considered to have failed, and the network switch is determined.

Accordingly, when the connection to the WiFi network fails, the terminal device 100 sets the second transmission rate for data transmission to the second network device 300 to the first network device 200. By integrating to the transmission rate, it may be desirable to select partial data based on the integrated transmission rate so that the transmission target data, that is, the first partial data and the second partial data, can be transmitted only through the 3G network.

Further, when the connection to the WiFi network is successful, the terminal device 100 determines whether to maintain the connection to the network by performing performance determination on the WiFi network in response to the network selection policy.

In other words, the terminal device 100 performs performance on a target network corresponding to a network selection policy received from the policy management device 600, that is, a WiFi network, which is highly variable in terms of network mobility and stability, among 3G networks and WiFi networks. By performing the determination, it is determined whether to maintain the WiFi network connection.

In other words, the terminal device 100 extracts the access address included in the performance determination information and the threshold value which is the performance determination criterion, and performs the performance determination through the second network device 300 based on the extracted access address. A specific device (not shown) is connected to perform data transmission and reception.

Furthermore, the terminal device 100 checks the response time for the data transmission amount or the specific signal (eg, PING) according to the data transmission and reception, and compares the identified data transmission amount or response time with the extracted threshold value, It is determined whether to maintain the connection to the second network device 300 according to the comparison result.

At this time, the terminal device 100 determines that the connection to the second network device 300 can be maintained when the confirmed data transmission amount or response time is less than or equal to the threshold value, while the confirmed data transmission amount or response time is If the threshold value is exceeded, it is determined that connection maintenance is impossible due to substandard performance.

Meanwhile, after determining that the terminal device 100 can access the second network device 300, the terminal device 100 reports the result to the policy management device 600 so that the terminal device 100 can be reflected in the network selection decision. will be.

Further, the terminal device 100 selects the partial data divided from the transmission target data according to whether the connection to the WiFi network or the connection is maintained.

That is, the terminal device 100 divides the transmission target data to correspond to the number of networks for simultaneous transmission of data using a heterogeneous network environment, that is, a 3G network and a WiFi network, according to a network selection policy transmitted from the policy management device 600. Based on the transmission.

To this end, the terminal device 100 confirms 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 included in the network selection policy. And selecting first partial data to be transmitted to the first network apparatus 200 among the divided partial data based on the confirmed transmission rate, and second partial data to be transmitted to the second network apparatus 300 among the remaining partial data. Will be selected.

In this case, when it is determined that the connection failure or the connection maintenance to the WiFi network is impossible as described above, the terminal device 100 sets the second transmission rate for data transmission to the second network device 300 as the first network device. By integrating into the first transmission rate for data transmission to the 200, the partial data can be selected based on the integrated transmission rate so that the data to be transmitted, that is, the first partial data and the second partial data, can be transmitted only through the 3G network. Make sure

Through this, the terminal device 100 performs a partial data selection process based on the performance determination result, so that the traffic distribution rate for each network corresponding to the network selection policy, for example, 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10%, 3G network 50%: WiFi network 50%, 3G network 0%: Changes the relative usage of 3G networks and WiFi networks, including WiFi network 100%, to 3G network 100% and WiFi network 0% Done.

Meanwhile, when it is determined that the connection to the WiFi network can be maintained as a result of the performance determination, the terminal device 100 applies the relative utilization ratios of the 3G network and the WiFi network included in the network selection policy without change, thereby allowing the first network device to change. It may be desirable to select the partial data according to the first transmission rate for data transmission to the 200 and the second transmission rate for data transmission to the second network apparatus 300.

Furthermore, the terminal device 100 transmits the partial data through the first network device 200 and the second network device 300.

That is, the terminal device 100 transmits the first partial data to the first network device 200 located in the 3G network, and the first network device 200 transmits the first partial data as the receiving device. Will send to. The terminal device 100 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and the second network device 300 transmits the second partial data as a receiving device. The management device 400 will transmit. On the other hand, when the connection to the WiFi network is impossible, the terminal device 100 transmits both the first partial data and the second partial data to the first network device 200 located in the 3G network, and thus the first network device ( 200 transmits the partial data to the management device 400 as a receiving device.

The management device 400 receives the first partial data from the first network device 200 and the second partial data from the second network device 300 and includes the received first partial data and the second partial data. By generating the data by combining the first partial data and the second partial data based on the virtual network access information, the transmission target data to be transmitted by the terminal apparatus 100 is restored.

That is, the management apparatus 400 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the partial data. By combining and combining according to the information, the original transmission target data can be generated.

The management device 400 is restored to the external device 500 by using the connection information of the external device corresponding to the final destination recognized through at least one of the partial data and the first partial data. Transfer the data to be sent.

As such, the first partial data and the second partial data divided by the terminal device 100 are combined by the management device 400 in the process of passing through the management device 400 through a heterogeneous network, and restored to the original transmission target data. The restored transmission target data is transmitted to the external device 500 which is the final destination as one data.

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

That is, the terminal device 100 has a configuration including a connection determination unit 110 for performing a performance determination on the WiFi network, a control unit 120 for selecting partial data, and a communication unit 130 for transmitting partial data. . Here, the connection determination unit 110 and the control unit 120 has a form mounted in the OS kernel mounted on the terminal device 100, and the data according to the request of a specific application embedded or downloaded to the terminal device 100 It performs a series of operations for the broadcast transmission service. In addition, the communication unit 130 refers to a communication module for interworking with the first network device 200 using the 3G network and interworking with the second network device 300 using the WiFi network.

The connection determination unit 110 attempts to access the WiFi network in response to the network selection policy, and determines the network switching according to whether the connection is successful.

That is, the connection determination unit 110 attempts to connect to the second network device 300 located in the WiFi network according to the network selection policy received from the policy management device 600, that is, the second network device 300. Authenticate with and get access address.

In this regard, the connection determination unit 110 attempts to connect to the second network device 300 for a set number of times and a set time according to the access restriction information included in the network selection policy.

At this time, the connection determination unit 110 may be connected to the second network device 300 to perform the set number of times, or to perform the set time for a set time, or to perform the set number of times. If it is performed during the time period, the connection to the WiFi network is considered to have failed, and the network switch is determined.

Further, when the connection to the WiFi network is successful, the access determination unit 110 determines whether to maintain the connection to the network by performing a performance determination on the WiFi network in response to the network selection policy.

That is, the access determination unit 110 is a target network corresponding to the network selection policy received from the policy management device 600, that is, the 3G network and WiFi network, among the WiFi network, which is highly variable in terms of network mobility and stability By performing the performance determination, it is determined whether to maintain the WiFi network connection.

In other words, the access determination unit 110 extracts a connection address included in the performance determination information and a threshold value which is a performance determination criterion, and performs a performance determination through the second network device 300 based on the extracted access address. It is connected to a specific device (not shown) for the purpose of transmitting and receiving data.

Further, the connection determination unit 110 checks the response time for the data transmission amount or a specific signal (for example, PING) according to the data transmission and reception, and compares the confirmed data transmission amount or response time with the extracted threshold value. According to the comparison result, it is determined whether to maintain the connection to the second network device 300.

At this time, the connection determination unit 110 determines that the connection to the second network device 300 can be maintained when the confirmed data transmission amount or response time is less than or equal to the threshold value, while the confirmed data transmission amount or response time is determined. If this threshold is exceeded, it is determined that connection maintenance is impossible due to substandard performance.

The control unit 120 selects the partial data divided from the transmission target data according to whether the connection to the WiFi network is failed or the connection is maintained.

That is, the controller 120 checks 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 included in the network selection policy. The first partial data to be transmitted to the first network device 200 is selected from the divided partial data based on the checked transmission rate, and the second partial data to be transmitted to the second network device 300 is selected from the remaining partial data. Done.

At this time, when it is determined that the connection failure or the connection maintenance to the WiFi network is impossible as described above, the controller 120 sets the second transmission rate for data transmission to the second network device 300 to the first network device. By integrating into the first transmission rate for data transmission to the 200, the partial data can be selected based on the integrated transmission rate so that the data to be transmitted, that is, the first partial data and the second partial data, can be transmitted only through the 3G network. Make sure

Through this, the control unit 120 performs a partial data selection process based on the performance determination result, so that the traffic distribution rate for each network corresponding to the network selection policy, for example, 3G network 10%: WiFi network 90%, 3G network 90%: WiFi Network 10%, 3G network 50%: WiFi network 50%, 3G network 0%: Changes the relative usage of 3G networks and WiFi networks, including 100% of WiFi networks, to 100% of 3G networks and 0% of WiFi networks. do.

On the other hand, if it is determined that the connection to the WiFi network can be maintained as a result of the performance determination, the controller 120 applies the relative utilization ratio of the 3G network and the WiFi network included in the network selection policy without change, thereby allowing the first network device ( It may be desirable to select the partial data according to the first transmission rate for data transmission to 200 and the second transmission rate for data transmission to the second network apparatus 300.

The communication unit 130 transmits the partial data through the first network device 200 and the second network device 300.

That is, the communication unit 130 transmits the first partial data to the first network device 200 located in the 3G network, and the first network device 200 transmits the first partial data to the management device 400 as the receiving device. Will transmit. The communication unit 130 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and the second network device 300 manages the second partial data as the receiving device. Will send to device 400. Meanwhile, when the connection to the WiFi network is impossible, the communication unit 130 transmits both the first partial data and the second partial data to the first network device 200 located in the 3G network, and thus the first network device 200. ) Transmits the partial data to the management device 400 as a receiving device.

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 response to the network selection policy in dividing and transmitting the transmission data according to the network selection policy When accessing a specific network, the network connection is switched by determining whether to maintain the connection through the performance determination of the network, thereby efficiently and optimally controlling heterogeneous network based on the optimal network device access to the terminal device. Data simultaneous transmission service can be implemented, and data transmission speed can be increased through data division transmission.

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

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

First, the policy management device 600 provides a network selection policy (S110).

Preferably, the policy management apparatus 600 is a terminal device 100 and management according to various network parameters and network state changes on heterogeneous networks including, for example, subscriber preferences, subscriber types, subscription plans, types of service target applications, and the like. Based on the network state information received from the device 400 includes a relative utilization ratio between networks so that data to be transmitted can be divided to correspond to the number of networks for simultaneous transmission of data using a heterogeneous network environment, that is, a 3G network and a WiFi network. The network selection policy may be determined and provided to the terminal device 100 and the management device 400.

Then, the terminal device 100 attempts to access the WiFi network in response to the network selection policy, and determines network switching according to whether the connection is successful (S120-S130).

Preferably, the terminal device 100 attempts to connect to the second network device 300 located in the WiFi network according to the network selection policy received from the policy management device 600, that is, the second network device 300. Authenticate with and assign an access address.

In this regard, the terminal device 100 attempts to connect to the second network device 300 for, for example, a set number of times and a set time according to the access restriction information included in the network selection policy.

In this case, the terminal apparatus 100 may perform an access attempt for the second network apparatus 300, or perform an access attempt for a setting time, or perform an access attempt for the setting time and during the setting time. If performed, the connection to the WiFi network is considered to have failed, and the network switch is determined.

Accordingly, when the connection to the WiFi network fails, the terminal device 100 sets the second transmission rate for data transmission to the second network device 300 to the first network device 200. By integrating to the transmission rate, it may be desirable to select partial data based on the integrated transmission rate so that the transmission target data, that is, the first partial data and the second partial data, can be transmitted only through the 3G network.

Further, when the terminal device 100 successfully accesses the WiFi network, the terminal device 100 determines whether to maintain the connection to the corresponding network by performing performance determination on the WiFi network in response to the network selection policy (S140-S160).

Preferably, the terminal device 100 is a target network corresponding to the network selection policy received from the policy management device 600, that is, the 3G network and the WiFi network, among the WiFi network with a high fluctuation in terms of network mobility and stability Perform performance judgment with

In other words, the terminal device 100 extracts the access address included in the performance determination information and the threshold value which is the performance determination criterion, and performs the performance determination through the second network device 300 based on the extracted access address. A specific device (not shown) is connected to perform data transmission and reception.

Furthermore, the terminal device 100 checks the response time for the data transmission amount or the specific signal (eg, PING) according to the data transmission and reception, and compares the identified data transmission amount or response time with the extracted threshold value, It is determined whether to maintain the connection to the second network device 300 according to the comparison result.

At this time, the terminal device 100 determines that the connection to the second network device 300 can be maintained when the confirmed data transmission amount or response time is less than or equal to the threshold value, while the confirmed data transmission amount or response time is If the threshold value is exceeded, it is determined that connection maintenance is impossible due to substandard performance.

Meanwhile, after determining that the terminal device 100 can access the second network device 300, the terminal device 100 reports the result to the policy management device 600 so that the terminal device 100 can be reflected in the network selection decision. will be.

Then, the terminal device 100 selects the partial data divided from the transmission target data according to whether to maintain the connection to the WiFi network (S170-S180).

Preferably, the terminal device 100 corresponds to the number of network data to be transmitted for simultaneous data transmission using a heterogeneous network environment, that is, a 3G network and a WiFi network, according to a network selection policy transmitted from the policy management device 600. It is basically based on split transmission.

To this end, the terminal device 100 confirms 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 included in the network selection policy. And selecting first partial data to be transmitted to the first network apparatus 200 among the divided partial data based on the confirmed transmission rate, and second partial data to be transmitted to the second network apparatus 300 among the remaining partial data. Will be selected.

In this case, when it is determined that the connection to the WiFi network is impossible as a result of the performance determination as described above, the terminal device 100 sets the second transmission rate for data transmission to the second network device 300 in the first network. By integrating into the first transmission rate for data transmission to the device 200, the partial data are selected based on the integrated transmission rate so that the data to be transmitted, that is, the first partial data and the second partial data, are transmitted only through the 3G network. To be able.

Through this, the terminal device 100 performs a partial data selection process based on the performance determination result, so that the traffic distribution rate for each network corresponding to the network selection policy, for example, 3G network 10%: WiFi network 90%, 3G network 90%: WiFi network 10%, 3G network 50%: WiFi network 50%, 3G network 0%: Changes the relative usage of 3G networks and WiFi networks, including WiFi network 100%, to 3G network 100% and WiFi network 0% Done.

On the other hand, if it is determined that the access to the WiFi network or the connection to the WiFi network can be maintained, the terminal device 100 applies the relative utilization ratio of the 3G network and the WiFi network included in the network selection policy without change, thereby allowing the first network device ( It may be desirable to select the partial data according to the first transmission rate for data transmission to 200 and the second transmission rate for data transmission to the second network apparatus 300.

Next, the terminal device 100 transmits the partial data through the first network device 200 and the second network device 300 (S190).

Preferably, the terminal apparatus 100 transmits the first partial data to the first network apparatus 200 located in the 3G network, so that the first network apparatus 200 transmits the first partial data to the management apparatus as a receiving apparatus ( 400). The terminal device 100 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and the second network device 300 transmits the second partial data as a receiving device. The management device 400 will transmit. On the other hand, when the connection to the WiFi network is impossible, the terminal device 100 transmits both the first partial data and the second partial data to the first network device 200 located in the 3G network, and thus the first network device ( 200 transmits the partial data to the management device 400 as a receiving device.

Thereafter, the management apparatus 400 receives the first partial data from the first network apparatus 200 and the second partial data from the second network apparatus 300, and receives the received first partial data and the second partial data. By generating data by combining the first partial data and the second partial data based on the virtual network access information included in the data, the transmission target data intended to be transmitted by the terminal apparatus 100 is restored (S200-S210).

Preferably, the management device 400 recognizes the first partial data and the second partial data having the same virtual network access information based on the virtual network access information included in the received partial data, and includes them in the corresponding partial data. By combining and combining according to the obtained order information, the original transmission target data can be generated.

The management device 400 is restored to the external device 500 by using the connection information of the external device corresponding to the final destination recognized through at least one of the partial data and the first partial data. Transfer the data to be sent.

As such, the first partial data and the second partial data divided by the terminal device 100 are combined by the management device 400 in the process of passing through the management device 400 through a heterogeneous network, and restored to the original transmission target data. The restored transmission target data is transmitted to the external device 500 which is the final destination as one data.

Hereinafter, a method of operating the terminal device 100 according to an embodiment of the present invention will be described with reference to FIG. 4.

First, a connection to a WiFi network is attempted in response to a network selection policy, and network switching is determined according to whether the connection is successful (S310-S340).

Preferably, the connection determination unit 110 attempts to connect to the second network device 300 located in the WiFi network according to the network selection policy received from the policy management device 600, that is, the second network device ( 300 is authenticated and an access address is assigned.

In this regard, the connection determination unit 110 attempts to connect to the second network device 300 for a set number of times and a set time according to the access restriction information included in the network selection policy.

At this time, the connection determination unit 110 may be connected to the second network device 300 to perform the set number of times, or to perform the set time for a set time, or to perform the set number of times. If it is performed during the time period, the connection to the WiFi network is considered to have failed, and the network switch is determined.

Furthermore, when the connection to the WiFi network is successful, the performance determination of the WiFi network is performed in response to the network selection policy to determine whether to maintain the connection to the corresponding network (S350-S380).

Preferably, the access determination unit 110 is a connection target network corresponding to the network selection policy received from the policy management device 600, that is, the 3G network and the WiFi network, among the WiFi network, which fluctuates in terms of network mobility and stability. By performing the performance judgment on the target, it is determined whether to maintain the WiFi network connection.

In other words, the access determination unit 110 extracts a connection address included in the performance determination information and a threshold value which is a performance determination criterion, and performs a performance determination through the second network device 300 based on the extracted access address. It is connected to a specific device (not shown) for the purpose of transmitting and receiving data.

Further, the connection determination unit 110 checks the response time for the data transmission amount or a specific signal (for example, PING) according to the data transmission and reception, and compares the confirmed data transmission amount or response time with the extracted threshold value. According to the comparison result, it is determined whether to maintain the connection to the second network device 300.

At this time, the connection determination unit 110 determines that the connection to the second network device 300 can be maintained when the confirmed data transmission amount or response time is less than or equal to the threshold value, while the confirmed data transmission amount or response time is determined. If this threshold is exceeded, it is determined that connection maintenance is impossible due to substandard performance.

Then, the divided partial data is selected from the transmission target data according to whether the connection to the WiFi network is maintained (S390-S410).

Preferably, the controller 120 checks 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 included in the network selection policy. And selecting first partial data to be transmitted to the first network apparatus 200 among the divided partial data based on the confirmed transmission rate, and second partial data to be transmitted to the second network apparatus 300 among the remaining partial data. Will be selected.

In this case, when it is determined that the connection failure or the connection maintenance to the WiFi network is impossible as described above, the controller 120 sets the second transmission rate for data transmission to the second network device 300 in the first network device ( By incorporating into the first transmission rate for data transmission to 200, partial data are selected based on the integrated transmission rate so that the data to be transmitted, that is, the first partial data and the second partial data, can be transmitted only through the 3G network. do.

Through this, the control unit 120 performs a partial data selection process based on the performance determination result, so that the traffic distribution rate for each network corresponding to the network selection policy, for example, 3G network 10%: WiFi network 90%, 3G network 90%: WiFi Network 10%, 3G network 50%: WiFi network 50%, 3G network 0%: Changes the relative usage of 3G networks and WiFi networks, including 100% of WiFi networks, to 100% of 3G networks and 0% of WiFi networks. do.

On the other hand, if it is determined that the connection to the WiFi network can be maintained as a result of the performance determination, the controller 120 applies the relative utilization ratio of the 3G network and the WiFi network included in the network selection policy without change, thereby allowing the first network device ( It may be desirable to select the partial data according to the first transmission rate for data transmission to 200 and the second transmission rate for data transmission to the second network apparatus 300.

Thereafter, the partial data is transmitted through the first network device 200 and the second network device 300 (S420).

Preferably, the communication unit 130 transmits the first partial data to the first network device 200 located in the 3G network, whereby the first network device 200 transmits the first partial data as the receiving device. Will be sent). The communication unit 130 transmits the second partial data to the specific second network device 300 selected based on the connection target network device information, and the second network device 300 manages the second partial data as the receiving device. Will send to device 400. Meanwhile, when the connection to the WiFi network is impossible, the communication unit 130 transmits both the first partial data and the second partial data to the first network device 200 located in the 3G network, and thus the first network device 200. ) Transmits the partial data to the management device 400 as a receiving device.

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 response to the network selection policy in dividing and transmitting the transmission data according to the network selection policy When accessing a specific network, the network connection is switched by determining whether to maintain the connection through the performance determination of the network, thereby efficiently and optimally controlling heterogeneous network based on the optimal network device access to the terminal device. Data simultaneous transmission service can be implemented, and data transmission speed can be increased through data division transmission.

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

Although the present invention has been described in detail with reference to preferred embodiments, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will have the technical idea of the present invention to the extent that various modifications or changes are possible.

According to the heterogeneous network-based simultaneous data transmission service system and method thereof according to the present invention, in the heterogeneous network environment, in segmenting and simultaneously transmitting data to be transmitted according to a network selection policy, a specific network corresponding to the network selection policy is provided. In the case of accessing the network, the network connection switching is performed by determining whether to maintain the connection through the performance judgment on the network. It is an invention with industrial applicability, since the possibility of business is not only sufficient but also practically obvious.

100: terminal device
110: connection determination unit 120: control unit
130: communication unit
200: first network device
300: second network device
400: management device
500: external device
600: policy management device

Claims (8)

delete delete delete If the data transmission amount or response time corresponding to the data transmission / reception through the specific network among the two or more connection target networks exceeds the threshold value, the connection maintenance to the specific network is performed based on the performance determination information. A connection determination unit judged to be impossible;
A control unit selecting partial data divided from the transmission target data according to whether to maintain the connection to the specific network; And
It includes a communication unit for transmitting the selected partial data,
The performance determination information,
The connection address of the specific device for performance determination and the threshold value,
The connection determination unit,
And extracting a connection address of the specific device from the performance determination information and accessing the specific device through the specific network based on the extracted access address to perform data transmission and reception. The method of claim 4, wherein
The connection determination unit,
And accessing a specific device based on the access address included in the performance determination information, and transmitting and receiving the data through the specific network with the specific device. The method of claim 5,
The control unit,
And when the connection to the specific network cannot be maintained, the partial data divided from the data to be transmitted is selected for data transmission from one or more networks except for the specific network. delete A network connection step of connecting two or more connection target networks;
A connection determination step of determining that connection to the specific network is impossible if the data transmission amount or response time corresponding to data transmission / reception through a specific network of the two or more connection target networks exceeds a threshold value based on the performance determination information;
A data selection step of selecting partial data divided from the transmission target data according to whether to maintain the connection to the specific network; And
A data transmission step of transmitting the selected partial data;
The performance determination information,
The connection address of the specific device for performance determination and the threshold value,
The connection determination step,
And extracting the access address of the specific device from the performance determination information and accessing the specific device through the specific network based on the extracted access address to perform data transmission / reception.
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