KR101333814B1 - High speed data communication apparatus used plural communicating interface, Gateway, Router, High speed data transmitting and receiving method, IP registration method for high speed data transmitting and receiving - Google Patents

Abstract

The present invention relates to a high speed data communication apparatus having a plurality of communication interfaces, a gateway and a router thereof, a high speed data transmission and reception method, and an IP registration method for high speed data transmission and reception. The number of available communication is implemented by distributing and transmitting the datagram requested from the communication through a plurality of communication interfaces, and collecting the datagrams received from the plurality of communication interfaces and transmitting the datagrams to the upper layer when data is received. The data can be distributed and transmitted and received using an interface, thereby enabling high-speed data communication.

Data communication, communication interface, datagram, distributed

Description

A high speed data communication apparatus having a plurality of communication interfaces, a gateway and a router thereof, a high speed data transmission and reception method, and an IP registration method for high speed data transmission and reception (High speed data communication apparatus used plural communicating interface, Gateway, Router, High speed data transmitting and receiving method, IP registration method for high speed data transmitting and receiving}

1 is a diagram illustrating an example of a protocol structure of a data communication device having a plurality of conventional communication interfaces.

2 illustrates an embodiment of a protocol structure of a high speed data communication device having a plurality of communication interfaces according to the present invention.

3 is an IP datagram structure diagram

4 is a diagram illustrating an example of a network configuration;

5 is a block diagram showing a configuration according to an embodiment of a multi-protocol processing unit of a high-speed data communication apparatus having a plurality of communication interfaces according to the present invention.

6 is a block diagram showing a configuration according to an embodiment of a gateway of a high speed data communication apparatus having a plurality of communication interfaces according to the present invention;

7 is a block diagram showing a configuration according to an embodiment of a router of a high speed data communication apparatus having a plurality of communication interfaces according to the present invention.

8 is a flowchart illustrating an IP registration operation for high-speed data transmission and reception;

9 is a flowchart showing a high speed data transmission operation;

10 is a flowchart showing a high speed data receiving operation;

11 illustrates an example of a private IP list and a public IP list;

<Explanation of symbols for the main parts of the drawings>

100: high speed data communication device 110: communication interface

120: multi-protocol processing unit 121: multi-transmission processing unit

122: multiple reception processing unit 123: search unit

124: list creation unit 125: private IP allocation unit

126: IP registration request unit 130: IP protocol

140: TCP protocol 150: communication application

200: gateway 210: transmission processing unit

220: receiving processor 300: router

310: public IP setting unit 320: memory

The present invention relates to a high speed data communication apparatus having a plurality of communication interfaces, a gateway and a router thereof, a high speed data transmission and reception method, and an IP registration method for high speed data transmission and reception.

Recently, a number of communication interfaces have been adopted in communication devices such as mobile communication terminals. For example, the adoption of Bluetooth in CDMA or GSM terminals is common, and the adoption of various communication interfaces such as WLAN and WiBro is expected to increase gradually.

An example of a protocol structure of a data communication device having a plurality of conventional communication interfaces is shown in FIG. 1. The data communication apparatus shown in the figure has a plurality of communication interfaces for transmitting and receiving data in the CDMA, GSM, Bluetooth, WLAN, WiBro protocol scheme. By the way, in the case of such a data communication apparatus having a plurality of communication interfaces, only one communication interface selected by a user or a specific application is available at the time of performing data communication. The speed of the data depends on the performance of the interface.

That is, in the conventional case, despite having a plurality of communication interfaces, data communication was possible only through one communication interface at the time of data communication, thereby having a limitation of data communication speed. Accordingly, the present inventors have been able to distribute and transmit and receive data by using a plurality of available communication interfaces of a communication device having a plurality of communication interfaces, thereby researching a technology capable of high-speed data communication.

SUMMARY OF THE INVENTION The present invention has been invented under the above-mentioned object, and is provided with a plurality of communication interfaces capable of transmitting and receiving data by using a plurality of available communication interfaces of a communication device having a plurality of communication interfaces, thereby enabling high-speed data communication. An object thereof is to provide a high speed data communication apparatus, a gateway and a router thereof, a high speed data transmission and reception method, and an IP registration method for high speed data transmission and reception.

According to an aspect of the present invention for achieving the above object, the present invention is to transmit the datagram (Datagram) required to be transmitted from the upper layer (Layer) in a distributed manner through a plurality of communication interfaces, and to receive data The city collects and transmits datagrams received from a plurality of communication interfaces to a higher layer.

Accordingly, the present invention can transmit and receive data by using a plurality of available communication interfaces of a communication device having a plurality of communication interfaces, and thus, high-speed data communication is possible.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

FIG. 2 is a diagram illustrating an embodiment of a protocol structure of a high speed data communication device having a plurality of communication interfaces according to the present invention. As shown in the figure, the high-speed data communication device 100 having a plurality of communication interfaces according to the present invention, multiple communication interfaces 110 to the physical layer (Multi Layer), multiple link layers (Link Layer) Multi-protocol process (MPP) 120, IP protocol 130 as a network layer, TCP protocol 140 as a transport layer, and application layer With a communication application 150.

The plurality of communication interfaces 110 are hardware that processes transmission and reception data using different protocols. For example, the communication interfaces 110 may be CDMA communication interfaces, GSM communication interfaces, Bluetooth communication interfaces, WLAN communication interfaces, WiBro communication interfaces, and the like. The protocol schemes handled by the communication interfaces 110 are different from each other.

The multi-protocol processor 120 transmits datagrams, which are requested to be transmitted from a network layer, which is a higher layer, during the data transmission, through the plurality of communication interfaces 110 and transmits the datagrams. Datagrams received from the plurality of communication interfaces 110 are collected and delivered to the upper layer.

The IP protocol 130 performs functions such as data exchange, data relay, routing, and flow control in order to exchange datagram packets between arbitrary hosts. The TCP protocol 140 provides reliable connected service between any hosts. The communication application 150 is user accessible software for communication.

3 is an IP datagram structure diagram. The data transmission unit used on the Internet is called an IP datagram. In the figure, a Version field indicates a version of an IP protocol, and an IHL (Internet Header Length) field indicates a length of a header. All fields in the header except the Option and Padding fields have a fixed length. The 8-bit SERVICE TYPE field called TOS (Type Of Service) indicates how the datagram is to be processed, and is further divided into five subfields to specifically indicate the matter. The Total Length field indicates the total length of the IP datagram. IP datagrams are sent encapsulated in physical network frames. The maximum length of one frame that can actually be transmitted on a physical network is called the maximum transmission unit or MTU of that network. Because each physical network has a different MTU, large datagrams need to be sent in separate segments for the smallest MTU network. This divided datagram is called a fragment, and processing this fragment is called a fragment. Fragments each have a Fragment Header, which is a Flags field and a Fragment offset field that tell the datagram that it is a Fragment and an offset address. The Identification field indicates that these fragments are a datagram and is used later to reassemble the fragments. The TTL (Time To Live) field indicates how long this datagram can stay in the Internet system. The Protocol field indicates which higher level protocol is used and the Header Checksum field is used to ensure the integrity of the header value. The Source IP address and Destination IP address fields indicate IP addresses of the sending host and the receiving host, respectively. The Option and Padding fields are used for network testing or debugging. The DATA field indicates the beginning of the data portion of the datagram. In the present invention, a source IP address field and a destination IP address field of an IP datagram are used to perform distributed data transmission and reception.

4 is a diagram illustrating an example of a network configuration, in which a mobile communication network, a WLAN network, and a WiBro network can be used simultaneously. The high-speed data communication device 100 having a plurality of communication interfaces according to the present invention is a CDMA communication interface, a WLAN communication interface, respectively, which transmits datagrams that are requested to be transmitted from a network layer that is a higher layer during data transmission. The WiBro communication interface is used to distribute the data to mobile communication networks, WLAN networks, and WiBro networks. When receiving data, datagrams distributed and received from mobile communication network, WLAN network and WiBro network are distributed and received through CDMA communication interface, WLAN communication interface and WiBro communication interface. By transmitting the data, data can be distributed and transmitted and received using a plurality of available communication interfaces, thereby enabling high-speed data communication.

The gateway 200 collects and distributes datagrams transmitted through various paths and interworks with the IP network. The router 300 of each network is in charge of switching between a private IP and a public IP. Private IP refers to the IP that can only be used in the internal network. Public IP refers to the only IP on the Internet and must be assigned and used by the competent authority of each country. The translation between the private IP address and the public IP address is performed through a network address translation (NAT) of the router 300. NAT is included as part of a router and translates an IP address on an internal network that uses a different IP address than what is known on the external network. In the figure, a mobile communication network, a WLAN network, and a WiBro network are taken as examples, but various other wired and wireless communication interfaces may be used. Detailed configurations and operations of the high speed data communication device 100, the gateway 200, and the router 300 according to the present invention will be described later.

5 is a block diagram showing a configuration of an embodiment of the multi-protocol processing unit 120 of the high-speed data communication device 100 having a plurality of communication interfaces according to the present invention. As shown in the figure, the multi-protocol processor 120 of the high-speed data communication apparatus 100 having a plurality of communication interfaces according to the present invention includes a multi-transmit processor 121 and a multi-receive processor 122. Is done.

The multiplex transmission unit 121 refers to a list of private IPs set as master IPs or slave IPs, and converts a source IP address of a datagram requested to be transmitted as a master IP and a slave IP. In turn, datagrams are distributed and transmitted through different communication interfaces 110 corresponding to each of the configured master IP and slave IP. The multiple reception processor 122 changes a destination IP address of datagrams received from different communication interfaces 110 into a master IP and transfers the destination IP address to a higher layer.

On the other hand, according to an additional aspect of the present invention, the multi-protocol processing unit 120 includes a search unit 123, a list creation unit 124, a private IP allocation unit 125, and an IP registration request unit 126. It is preferable to further include. The search unit 123 searches for the communication interface 110 held. The list preparation unit 124 checks the network state of each of the communication interfaces 110 searched by the search unit 123 and creates a list of available communication interfaces.

The private IP allocator 125 requests each network for an IP allocation for each of the available communication interfaces 110 created by the list generator 124 to be allocated a private IP, and assigns the allocated private IPs to the master IP. Alternatively, set as slave IP and save as private IP list. The IP registration requester 126 requests the router 300 to register private IPs included in a private IP list set as a master IP or a slave IP by the private IP assigner 125.

6 is a block diagram showing a configuration of an embodiment of a gateway 200 of a high speed data communication apparatus having a plurality of communication interfaces according to the present invention. As shown in the figure, the gateway 200 includes a transmission processor 210 and a reception processor 220.

The transmission processor 210 stores a source IP of a datagram received through different communication paths (hereinafter, means different network networks to which different communication interfaces are linked). ) In case of datagram received through communication path set as slave IP, compared with IP list, source IP address of datagram is changed to master IP and transmitted to IP network. When the source IP of the datagram is a datagram received through the communication path set as the master IP, the datagram is transmitted to the IP network as it is.

When receiving the datagram from the IP network, the reception processing unit 220 searches for a registered public IP list and alternately sets a destination IP address of the received datagram to a master IP or a slave IP registered in the public IP list. Then, the datagram is distributed and transmitted through a communication path corresponding to each of the configured master IP and slave IP.

7 is a block diagram showing a configuration of an embodiment of a router 300 of a high speed data communication device 100 having a plurality of communication interfaces according to the present invention. As shown in the figure, the router 300 includes a public IP setting unit 310 and a memory 320. The public IP setting unit 310 changes private IPs set as master IPs and slave IPs to public IPs according to a request for registration of private IPs from the high-speed data communication device 100 having a plurality of communication interfaces 110. Save and register the list of public IPs. The memory 320 is a means for storing the public IP list.

Operational effects of the high speed data communication device 100 having a plurality of communication interfaces and the gateway 200 and the router 300 according to the present invention having the above-described configuration will be described in detail with reference to FIGS. 8 to 10. Find out.

First, the IP registration operation for high speed data transmission and reception will be described. 8 is a flowchart illustrating an IP registration operation for high-speed data transmission and reception. In operation S110, the high speed data communication apparatus 100 having a plurality of communication interfaces searches for communication interfaces held by the search unit 123.

When the communication interfaces possessed by the step S110 are found, the high-speed data communication device 100 having a plurality of communication interfaces checks the network state of each of the communication interfaces 110 found through the list creation unit 124 in step S120. Check and make a list of available communication interfaces.

When the list of available communication interfaces is created in step S120, the available high speed data communication device 100 having a plurality of communication interfaces is created through the private IP allocator 125 in step S130. Requests IP allocation for each network and allocates private IP, sets assigned private IPs as master IP or slave IP and stores them as private IP list.

Next, the high speed data communication device 100 having a plurality of communication interfaces in step S140 is included in the private IP list set as the master IP or the slave IP by the step S130 through the IP registration requester 126. Request the router to register the IPs.

Then, according to a request for registration of private IPs from the high speed data communication device 100 having a plurality of communication interfaces, the router 300 passes through the public IP setting unit 310 to the master IP and the slave IP in step S150. The set private IPs are changed to public IPs, and the public IP list is stored and registered in the memory 320. FIG. 11 is a diagram illustrating an example of stored private IP and public IP list through the above process. When the available communication interface is a CDMA communication interface, a WLAN communication interface, a WiBro communication interface, and the like, the master IP is assigned to the mobile communication network. The assigned IPs and slave IPs indicate that IPs allocated to remaining networks such as WLAN networks and WiBro networks are set.

Meanwhile, the high speed data transmission operation will be described with reference to FIG. 9. 9 is a flowchart illustrating a high speed data transmission operation. When data transmission is requested by a specific communication application of the application layer, the source IP is mastered by the TCP protocol of the transport layer and the IP protocol of the network layer. The datagram, which is set to IP and has a destination IP as the final destination, is transmitted to the multi-protocol processor 120, which is a link layer, which is a lower layer. In the figure, the source IP of all datagrams transmitted from the IP protocol of the network layer to the multi-protocol processor 120, which is the link layer, is 190.190.101.23, and the destination IP is 200.100. You can see that it is .100.98.

If datagram transmission is required from an upper layer, the high speed data communication apparatus 100 having a plurality of communication interfaces is connected to the master IP or slave through the multiple transmission processing unit 121 of the multiprotocol processing unit 120 in step S210. Refer to the list of Private IPs set as Slave IPs, and alternately set the Source IP address of the Datagram requested for transmission to the Master IP and Slave IPs, The datagrams are distributed and transmitted through corresponding communication interfaces.

In the figure, the source IP address of the datagram requested to be transmitted is 190.190.101.23 (master IP), 190.190.201.25 (slave IP), 190.190.211.38 (slave IP) by the multiplex transmission processing unit 121, respectively. You can see that it is alternately set with). After that, the source IP address of the datagram is alternately set to the master IP and the slave IP as above. Each datagram is then connected via a CDMA communication interface corresponding to 190.190.101.23 (master IP), a WLAN communication interface corresponding to 190.190.201.25 (slave IP), and a WiBro communication interface corresponding to 190.190.211.38 (slave IP). Each is distributed and transmitted through different communication paths through mobile communication network, WLAN network and WiBro network.

The datagrams distributed and transmitted to different communication paths are changed from the private IP to the public IP by changing the source IP of the datagram to NAT 200 by the network address translation (NAT) of the router 300 of each network. Is sent. In the figure, private IP 190.190.101.23 (master IP) is assigned to public IP 201.125 by the router of the mobile communication network. In 98.23, it can be seen that private IP 190.190.201.25 (slave IP) is changed to public IP 201.138.11.25 by a router of WLAN network and private IP 190.190.211.38 is changed to public IP 222.131.53.23 by a router of WiBro network.

The gateway 200 receiving the datagrams distributed by the step S210 and transmitted through different communication paths stores the source IP of the datagrams received through the transmission processing unit 210. Public) When the datagram is received through the communication path set as the slave IP compared to the IP list, the source IP address of the datagram is changed to the master IP and transmitted to the IP network. At this time, when the source IP of the datagram is a datagram received through the communication path set as the master IP, the datagram is transmitted to the IP network as it is.

In the figure, since the source IP of the datagram transmitted from the mobile communication network is the master IP, the source IP is not changed and the public IP 201.125. 98.23 is the source IP, and since source IP 201.138.11.25 transmitted from the WLAN network is the slave IP, the source IP is the master IP 201.125. Datagram is changed to 98.23 and source IP transmitted from WiBro network 222.131.53.23 is also slave IP, so source IP is master IP 201.125. The datagram is transferred to 98.23. Therefore, since the source IP of the final datagram received at the data receiving terminal is 201.125.98.23, and the destination IP is 200.100.100.98, the data is distributed using the available communication interfaces of the communication device having a plurality of communication interfaces. And high-speed data communication is possible.

Meanwhile, the high speed data reception operation will be described with reference to FIG. 10. 10 is a flowchart illustrating a high speed data receiving operation. As shown in the figure, when the datagram is transmitted from the data originating terminal, it is transmitted to the gateway 200 through the IP network. The gateway 200 receiving this is searched for the public IP list registered in step S310 through the reception processor 220, and the master registered the destination IP address of the received datagram in the public IP list. Alternately set as (Master) IP or Slave (IP), and distribute datagrams through communication paths corresponding to each of Master IP and Slave IP.

In the figure, datagrams having a source IP of 200.100.100.98 and a destination IP of 201.125.98.23 transmitted from a data transmitting side terminal are respectively received by the receiving processor 220 of the gateway. You can see that it is alternately set to 98.23 (master IP), 201.138.11.25 (slave IP), and 222.131.53.23 (slave IP). After that, the datagram transmitted as above is set to the destination IP address of the datagram alternately with the master IP and the slave IP.

When datagrams are respectively transmitted from the gateway to respective networks (different communication paths) corresponding to 201.125.98.23 (master IP), 201.138.11.25 (slave IP), and 222.131.53.23 (slave IP), respectively. The destination IP of the datagram is changed from the public IP to the private IP by the network address translation (NAT) of the network 300 and transmitted to the high speed data communication device 100 having the plurality of communication interfaces. In the figure, the public IP 201.125.98.23 (master IP) is set to private IP 190.190 by the router of the mobile communication network. In 101.23, it can be seen that the public IP 201.138.11.25 (slave IP) has been changed by the router of the WLAN network to the private IP 190.190.201.25, and the public IP 222.131.53.23 by the router of the WiBro network has been changed to the private IP 190.190.211.38.

Then, in step S320, the high-speed data communication apparatus 100 having the plurality of communication interfaces receives the distributed datagrams through different communication interfaces corresponding to each of the configured master IP and slave IP, Change the destination IP address to the master IP and forward it to the higher layer. At this time, when the destination IP of the datagram is a datagram received through the communication path set as the master IP, the datagram is received as it is.

In the figure, since the destination IP of the datagram transmitted from the mobile communication network is the master IP, the destination IP is not changed and is private IP 190.190. Since 101.23 becomes the destination IP and the destination IP 190.190.205.25 transmitted from the WLAN network is the slave IP, the destination IP is 190.190. The destination IP 190.190.211.38 is also a slave IP because the datagram is changed to 101.23, and the datagram is received from the WiBro network. Therefore, the destination IP is 190.190. Changed to 101.23, the datagram is received. Therefore, the source IP of the final datagram received by the high-speed data communication device 100 having a plurality of communication interfaces is 200.100.100.98 and the destination IP is 190.190.101.23, so that a communication device having a plurality of communication interfaces is available. Data can be distributed and received using a plurality of communication interfaces, thereby enabling high-speed data communication.

Accordingly, by the above, a high speed data communication apparatus having a plurality of communication interfaces, a gateway and a router thereof, a high speed data transmission and reception method, and an IP registration method for high speed data transmission and reception are available. Since data can be transmitted and received by using a communication interface, high speed data communication is possible.

While the invention has been described with reference to the preferred embodiments, which are referred to by the accompanying drawings, it is apparent that various modifications are possible without departing from the scope of the invention within the scope covered by the following claims from this description. .

Claims (9)

delete A plurality of communication interfaces for processing transmission and reception data in different protocol schemes; Refer to the list of Private IPs set as Master IP or Slave IP, and set the Source IP address of the datagram requested to be transferred to Master IP and Slave IP alternately. Multiple transmission processing unit for distributing and transmitting datagrams through different communication interfaces corresponding to each slave IP, and destination IP address of datagrams received from multiple communication interfaces processing transmission / reception data using different protocol methods. A multi-protocol processing unit including a multi-receiving processing unit for changing the master IP to a higher layer; A high speed data communication device having a plurality of communication interfaces, comprising a. The method of claim 2, The multi-protocol processor: A search unit for searching for owned communication interfaces; A list preparation unit for checking a network state of each of the communication interfaces retrieved by the search unit and creating a list of available communication interfaces; Private IP allocation for requesting an IP allocation for each of the available communication interfaces created by the list creation unit to each network to be allocated a private IP, and setting the allocated private IPs as a master IP or a slave IP and storing them as a private IP list. Wealth; An IP registration request unit requesting a router to register private IPs included in a private IP list set as a master IP or a slave IP by the private IP allocator; A high speed data communication device having a plurality of communication interfaces, characterized in that it further comprises. The method according to claim 2 or 3, The plurality of communication interfaces are: High-speed data communication with a plurality of communication interfaces that process data of at least two protocol methods of CDMA, GSM, WLAN, Bluetooth, WiBro protocol (Protocol), each communication interface is different from each other Device. When the datagram received through the communication path set as the slave IP by comparing the source IP of the datagram received through different communication paths with the stored public IP list, the source of the datagram ( Source) Transmitting processing unit for changing the IP address to the master (Master) IP to transmit to the IP network; When receiving datagram from IP network, search registered public IP list, alternately set destination IP address of received datagram to master IP or slave IP registered in public IP list, and set master IP and slave A reception processing unit for distributing datagrams through communication paths corresponding to IPs and transmitting the datagrams to a high speed data communication device having a plurality of communication interfaces; A gateway of a high speed data communication device having a plurality of communication interfaces, characterized in that it comprises a. In response to a request for registration of private IPs from a high-speed data communication device having a plurality of communication interfaces, the public IP setting unit changes private IPs set as master IPs and slave IPs to public IPs, and stores and registers a list of public IPs. ; A memory for storing the public IP list; Router of a high speed data communication device having a plurality of communication interfaces, characterized in that comprises a. a1) High-speed data communication device having a plurality of communication interfaces refers to a list of private IPs set as master IPs or slave IPs, and a source of datagrams requested for transmission. Alternately setting an IP address to a master IP and a slave IP, and distributing and transmitting datagrams through different communication interfaces corresponding to each of the configured master IP and slave IP; a2) The communication configured as the slave IP by comparing the source IP of the received datagram with the stored public IP list by the gateway receiving the datagram distributed through step a1 and transmitted through different communication paths. When the datagram is received through the path, changing the source IP address of the datagram to the master IP and transmitting the datagram to the IP network; A high speed data transmission method comprising a. b1) Search the list of public IPs registered by the gateway that received the datagram from the IP network, and select the destination IP address of the received datagram in the master IP list. Master) alternately setting to IP or slave IP, and distributing and transmitting datagrams through communication paths corresponding to each of the configured master IP and slave IP; b2) the datagram distributed by the gateway in step b1 is received through a different communication interface corresponding to each of the master IP and the slave IP configured by the high-speed data communication device having a plurality of communication interfaces, and the received data Changing the destination IP address of the gram to the master IP and forwarding to the upper layer; High speed data receiving method comprising a. c1) retrieving communication interfaces held by a high speed data communication device having a plurality of communication interfaces; c2) a high speed data communication device having a plurality of communication interfaces checking a network state of each of the communication interfaces retrieved by step c1 to create a list of available communication interfaces; c3) A high speed data communication device having a plurality of communication interfaces requests each network an IP assignment for each of the available communication interfaces created by step c2 to be assigned a private IP, and masters the assigned private IPs. Setting as (Master) IP or slave (Slave) IP and storing it as a private IP list; c4) requesting, by the router, a high speed data communication device having a plurality of communication interfaces to register private IPs included in a private IP list set as a master IP or a slave IP by step c3; c5) Upon request for registration of private IPs from a high-speed data communication device having a plurality of communication interfaces, the router changes the private IPs set as master IPs and slave IPs to public IPs, and stores a list of public IPs. Registering; IP registration method for high-speed data transmission and reception comprising a.

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