KR101189130B1 - Apparatus and mehtod for transmitting/receiving data - Google Patents

Abstract

An apparatus for transmitting and receiving data of the present invention includes an address generator for generating an internet protocol version 6 address including network interface characteristic information, and transmits the generated internet protocol version 6 address to a network, based on the network interface characteristic information. It includes a data transceiver for transmitting and receiving.

Internet Protocol version 6 address, network interface attribute information, communication method

Description

Apparatus and method for transmitting and receiving data {APPARATUS AND MEHTOD FOR TRANSMITTING / RECEIVING DATA}

The present invention relates to a data transmission and reception apparatus, and more particularly, to a data transmission and reception apparatus using an Internet Protocol version 6 address.

The present invention is derived from the research conducted as part of the support of the development of information and communication standards of the Ministry of Information and Communication [Task management number: 2008-P1-12-08K33, Task name: IPv6 support multi-network based next-generation network technology standard development].

In general, the Transmission Control Protocol / Internet Protocol (hereinafter referred to as 'TCP / IP') played a major role in the development of the Internet based on the network. Internet Protocol version 4 (IPv4), which is an Internet Protocol (IP) address system, is configured in 32 bits to give an IP address to a host.

Due to the increase of the Internet, IPv4 has reached the limit of the address that can be assigned. Accordingly, Internet Protocol version 6 (hereinafter referred to as 'IPv6') consisting of 128 bits has been proposed.

TCP / IP is provided with a single TCP connection between the first node and the second node, and the TCP connection is divided by four pieces of information. These four pieces of information are called 4-tuples. The source node's source address, source node's source port, destination node's destination address, and destination node's port Include. Using 4-tuples, the application services on each node can be uniquely identified.

The transmitting node address and the receiving node address are connected to one interface, that is, one medium access control (hereinafter, referred to as 'MAC') address. Therefore, the first node and the second node provides a service using only one address according to the application service provision.

In case of communicating by allocating IPv6 address to each node, one node is assigned one IPv6 address. Thus, the first node is assigned a sending IPv6 address, and the second node is assigned a receiving IPv6 address, respectively. The source IPv6 address and the destination IPv6 address correspond to each other one-to-one in communication.

As described above, since the first node and the second node use only one IPv6 address corresponding to one-to-one, there is a problem in that they cannot support a plurality of communication methods.

In addition, when using an IPv6 address that is currently used, there is a problem in that it is not possible to transmit and receive data by checking network characteristic information such as data transmission speed and data transmission distance supported by the interface of the node.

The present invention has been proposed to solve the above technical problem, and an object of the present invention is to provide an apparatus and method for transmitting and receiving data using a plurality of Internet protocol version 6 addresses.

Another object of the present invention is to provide a data transmission / reception apparatus and method for identifying characteristic information of a network interface using an IP protocol version 6 address.

An apparatus for transmitting and receiving data according to the present invention includes an address generator for generating an internet protocol version 6 address including network interface characteristic information, and transmits the generated internet protocol version 6 address to a network, based on the network interface characteristic information. It includes a data transceiver for transmitting and receiving data.

In this embodiment, the data transmission and reception unit is characterized in that it supports at least two communication schemes, each interface has an interface.

In this embodiment, the network interface characteristic information is information for identifying a communication scheme.

In this embodiment, the network interface characteristic information is mapped to at least one of transmission speed, transmission distance, reception sensitivity, and transmission speed.

The apparatus for transmitting / receiving data according to the present invention acquires an Internet Protocol version 6 address of a counterpart node to transmit and receive data, and selects an IP protocol 6 address set based on network interface characteristic information included in the Internet protocol version 6 address of the counterpart node. An address set selector, and a data transceiver configured to receive an Internet Protocol version 6 address of the counterpart node from a network, provide the address set selector, and transmit and receive data with the counterpart node based on the selected address sets. do.

In this embodiment, the data transmission and reception unit is characterized in that it supports at least two communication schemes, each interface has an interface.

In this embodiment, the address set includes a selected portion of available Internet protocol version 6 addresses of the counterpart node and a selected portion of Internet protocol version 6 addresses of the data transceiver.

In this embodiment, the network interface characteristic information is information for identifying a communication scheme.

In this embodiment, the network interface characteristic information is mapped to at least one of transmission speed, transmission distance, reception sensitivity, and transmission speed.

According to the present invention, the data transmitting / receiving apparatus proposed in the present invention has an advantage that it is possible to support a plurality of communication methods using Internet protocol version 6 addresses classified by network interface identifiers.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

The present invention relates to a data transmission and reception apparatus, and more particularly, to a data transmission and reception apparatus and a method using an Internet Protocol version 6 (hereinafter referred to as 'IPv6') address.

The apparatus for transmitting and receiving data of the present invention selects at least a portion of available IPv6 node addresses of the first node in response to the first node and the network interface characteristic information that generate the IPv6 address including the network interface characteristic information, and the first node and the data. And a second node for performing transmission and reception. Network interface characteristic information is inserted in the interface identifier field of the IPv6 address.

Each of the first node and the second node may include a plurality of interfaces, and the plurality of interfaces are divided according to communication schemes. Since each interface uses one IPv6 address independently, each node can transmit and receive data using multiple interfaces at the same time.

The node may be a terminal existing on the network and may be one of the network components existing between the terminals.

1 is a diagram illustrating an interface structure of a node according to an embodiment of the present invention.

Referring to FIG. 1, a node may transmit and receive data to provide an application service, and the type of data transmitted and received may be divided into general data, voice, and video. Each node includes an interface for each layer and includes a transport layer, an IP (Internet Protocol) layer, and a medium access control (MAC) layer. Are distinguished.

The node has various network interfaces, each of which is mapped to one IPv6 address. Hereinafter, it is assumed that network interfaces are composed of different heterogeneous network interfaces.

The node may support both wired and wireless communication schemes and has a MAC address corresponding to each communication scheme. The node may support one or more communication methods, and the communication methods supported by the node may be, for example, wired, high speed downlink packet access (HSDPA), zigbee, or portable. Communication that can be supported by nodes such as Internet (WiBro), Wireless Local Area Network (WLAN), and Wideband Code Division Multiple Access (WCDMA) methods It includes both ways. The above-described communication scheme is described as an example, and other communication schemes may be additionally used in addition to the above-described communication schemes.

Therefore, the nodes have MAC address interfaces classified according to communication methods in the MAC layer. Nodes have IPv6 address interfaces in the IP layer that are divided by communication method. At the node, the IPv6 address and the MAC address correspond to each other.

The node corresponds to a port in the transport layer for IPv6 addresses to be associated with an application service. Therefore, data of the application service is transmitted and received through the port of the transport layer.

The active communication method at the node is the portable Internet method, and the other communication methods are deactivated. Therefore, the node uses the IPv6 address including the network interface characteristic information corresponding to the portable Internet method. In this case, the data serviced through the portable Internet method is, for example, voice data.

In the present invention, since the data is transmitted and received using the above-described node, it is possible to provide an application service using the wired / wireless interface at the same time, and reconnect by using another interface when the operation of one interface is disabled.

2 illustrates an IPv6 address format according to an embodiment of the present invention.

Referring to FIG. 2, the IPv6 address 10 includes a network prefix 20 and an interface ID 30. The IPv6 address 10 is composed of 128 bits, the network prefix 20 is 64 bits, and the interface identifier 30 is 64 bits.

In the present invention, the node inserts network interface characteristic information into the interface identifier 30 of the IPv6 address. In this case, the network interface characteristic information is information corresponding to each communication scheme and is information for distinguishing the communication scheme. For example, the network interface characteristic information of the portable Internet method is '01', the network interface characteristic information of the WLAN method is '02', the network interface characteristic information of the high speed downlink packet access method is '03', and the Zigbee method Network interface property information can be set to '04'.

Referring to Table 1, the network interface characteristic information is mapped to at least one of transmission speed, transmission distance, reception sensitivity, and transmission speed (mobility guarantee information), for example. The nodes store the information to be mapped, and update the predetermined time intervals or data transmission / reception points. Information mapped to the network interface characteristic information in Table 1 is described as an example, and various information for identifying network characteristics may be additionally used in addition to the above-described information.

Therefore, when each node acquires IPv6 including network characteristic information, each node may identify a communication method supported by the corresponding network interface, and may check information on characteristics of the network interface corresponding to the corresponding communication method.

3 is a diagram illustrating an interface identifier of an IPv6 address according to an embodiment of the present invention.

Referring to FIG. 3, the interface identifier 30 includes a 48-bit MAC address 100 and 16-bit reserved regions 150, 160. The reserved area includes FF 150 and FE 160. The MAC address 100 may be divided based on the reserved area and positioned 100-1 in the previous area of the FF 150 or located 100-2 in the next area of the FE 160. The node may set the seventh bit of the upper MAC address 110 in the MAC address 100 to '1'.

In the present invention, network interface characteristic information is inserted into the reserved areas, that is, the FF 150 and the FE 160, which will be described in detail with reference to FIGS. 4 and 5 below.

4 is a diagram illustrating an interface identifier of an IPv6 address for inserting network interface characteristic information according to an embodiment of the present invention.

Referring to FIG. 4, the interface identifier 30 includes a 48-bit MAC address 200, a 16-bit FE 250, and an XX 260. XX 260 is an area including the network interface characteristic information proposed in the present invention. That is, the node inserts network interface characteristic information into the area 260 indicated by 'XX'. The MAC address 200 is divided based on the FE 250 and the XX 260 to be located 200-1 in the previous area of the FE 250 or 200-2 in the next area of the XX 260. Can be. The node may set the seventh bit of the upper MAC address 210 to '1' in the MAC address 200.

5 is a diagram illustrating an interface identifier of an IPv6 address for inserting network interface characteristic information according to another embodiment of the present invention.

Referring to FIG. 5, the interface identifier 30 region includes a 48-bit MAC address 300, a 16-bit FX 350, and an XE 360. X of the FX 350 and X of the XE 360 include network interface characteristic information proposed in the present invention. That is, the node inserts network interface characteristic information into the area indicated by 'X' of the FX 350 and 'X' of the XE 360. The MAC address 300 may be located 300-1 and 300-2 in the next area of the FX 350 and the XE 360. In addition, the node may set the seventh bit of the upper MAC address 310 to '1' in the MAC address 300.

In FIG. 4 and FIG. 5, the network interface identifier information is inserted into the middle or the beginning of the media access control address. For example, the network interface identifier information may be inserted after the media access control address.

6 is a flowchart illustrating an operation of a first node for generating an IPv6 address according to an embodiment of the present invention.

Referring to FIG. 6, in S611, the first node determines whether to generate an IPv6 address. As a result of checking in S611, the first node ends if it does not generate an IPv6 address. As a result of checking in S611, the first node proceeds to S613 when generating an IPv6 address.

In step S613, the first node determines whether to insert network interface characteristic information in the IPv6 address. If it is determined in S613 that the first node does not insert network interface characteristic information into the IPv6 address, the first node proceeds to S617. In S617, the first node generates a general IPv6 address and proceeds to S619. As a result of the determination in S613, the first node proceeds to S615 when inserting the network interface characteristic information into the IPv6 address. In S615, the first node inserts network interface characteristic information into the IPv6 address to generate an IPv6 address, and proceeds to S619.

In S619, the first node transmits the IPv6 address generated from the first node to a Domain Name System (DNS) or counterpart nodes on the network and terminates. The first node may transmit the generated IPv6 address to the domain name server of the domain name system and register or transmit the generated IPv6 address to a device, a counterpart node, or the like that manages the IPv6 address.

The operation procedure of FIG. 6 is performed for all network interfaces attached on the first node.

7 is a flowchart illustrating an operation of a second node for transmitting and receiving data using an IPv6 address including network interface characteristic information according to an embodiment of the present invention.

Referring to FIG. 7, in S711, the second node acquires all available IPv6 addresses of the counterpart node, that is, the first node, and proceeds to S713. When the acquired IPv6 address includes network interface characteristic information, the second node may check the characteristics of each interface using information mapped to the network interface characteristic information as shown in Table 1.

In step S713, the second node acquires its IPv6 address and proceeds to step S715. For example, the second node may acquire its IPv6 address using an ipconfig command or the like.

In S715, the second node selects a set of IPv6 addresses for transmitting and receiving data with the first node, and proceeds to S717. The second node compares the network interface information included in its IPv6 address with the network interface information included in the IPv6 addresses of the first node and selects an IPv6 address set for data communication with the first node. The IPv6 address set then includes some of the IPv6 addresses of the second node and some of the available IPv6 addresses of the first node. In addition, IPv6 addresses of the second node and the first node included in the IPv6 address set correspond to each other. The second node selects an IPv6 address set in consideration of the quality of service available to the first node. The IPv6 address set selected by the second node is selected to provide a quality of service required for providing an application service.

In S717, the second node determines the validity of the selected IPv6 address set, and proceeds to S719. That is, the second node determines whether the IPv6 addresses included in the IPv6 address set are IPv6 addresses capable of transmitting and receiving data. For example, the second node uses an address resolution scheme to determine validity. It is assumed that the address resolution method uses the IPv6 Internet Control Message Protocol (ICMPv6). If the IPv6 address obtained from the second node is set to be considered valid, the validity determination operation may not be performed.

In operation S719, the second node checks whether the validity determination of the selected IPv6 address set is successful. If it is determined in S719 that the second node does not succeed in determining the validity of the selected IPv6 address set, the second node proceeds to S715. If the second node fails all validity determinations for all available IPv6 addresses, the second node notifies the user that the application service cannot be provided. As a result of checking in S719, if the second node succeeds in determining the validity of the selected IPv6 address set, the second node proceeds to S721.

In S721, the second node transmits and receives data with the first node using the selected IPv6 address set.

8 is a diagram illustrating the structure of a node generating an Internet Protocol version 6 address according to an embodiment of the present invention.

Referring to FIG. 8, the node 800 includes an address generator 810 and a data transceiver 820.

The address generator 810 generates an internet protocol version 6 address including network interface characteristic information. Inserts network interface property information into the interface identifier field of the IPv6 address and inserts it into the area not including the MAC address. The network interface characteristic information is information for identifying a communication method, and corresponds to one of communication methods supported by the node 800. The network interface characteristic information is mapped to at least one of transmission speed, transmission distance, reception sensitivity, and transmission speed.

The data transmission / reception unit 820 transmits and receives data, and transmits an IPv6 address including network interface characteristic information to a network (domain name server, node 800, etc.). The data transceiver 820 transmits and receives data based on network interface characteristic information.

The data transceiver 820 supports at least two communication schemes, and has an interface for each communication scheme.

9 is a diagram illustrating a structure of a node that transmits and receives data using an IPv6 address including network interface characteristic information according to an embodiment of the present invention.

Referring to FIG. 9, the node 900 includes an address set selector 910 and a data transceiver 920.

The address set selector 910 obtains an IPv6 address of a counterpart node to transmit and receive data. The address set selector 910 may request an IPv6 address from the data transceiving unit 920 and obtain an IPv6 address in response to the request.

The address set selector 910 selects the IP protocol 6 address set based on the network interface characteristic information included in the obtained IPv6 address of the counterpart node. The network interface characteristic information is information for identifying a communication scheme. The network interface characteristic information is mapped to at least one of transmission speed, transmission distance, reception sensitivity, and transmission speed.

The IPv6 address set includes the node 900 own IPv6 address and the partner node's IPv6 address, and the own IPv6 address and the partner node's IPv6 address may correspond to each other based on network characteristic information, for example, one-to-one correspondence. . That is, the IPv6 address set may correspond to IPv6 addresses using the same interface. The IPv6 address set includes a selected portion of the partner's IPv6 addresses and a selected portion of the node 900's own IPv6 addresses.

Meanwhile, the address set selector 910 may include an address storage unit for storing its IPv6 address therein, and the stored IPv6 address includes network interface characteristic information.

The data transceiver 920 receives an Internet Protocol version 6 address of a counterpart node for data communication from a network (domain name server, counterpart node to transmit / receive data, etc.) and provides the address set selector 910 to the address set selector 910. The data transceiver 920 transmits and receives data with the counterpart node based on the selected address sets.

The data transceiver 920 supports at least two communication schemes, and has an interface for each communication scheme.

In FIG. 8 and FIG. 9, a node for generating an IPv6 address including network interface characteristic information and a node for transmitting and receiving data using an IPv6 address including network interface characteristic information are distinguished and described. However, FIG. 8 and FIG. The structure of FIG. 9 can exist simultaneously.

In the present invention, since the network connection is established based on the IP address, that is, the IPv6 address, it is possible to check which network interface the IPv6 address is connected to if the IPv6 address includes the network interface characteristic information.

In the present invention, by inserting the network characteristic information into the IPv6 address, it is possible to provide load balancing, high quality service, emergency communication, and the like according to data transmission and reception. That is, in the present invention, since various network interfaces are managed, when a specific network interface is inoperable, communication can be performed using another network interface, thereby providing a certain level of data communication and providing a high quality service. In addition, as the data channel and the control channel can be separated, an emergency communication service is possible.

In addition, the present invention is applied to the Internet TV (IPTV), etc., it is possible to efficiently transmit and receive data by using a different network interface for data for channel selection and data for TV viewing. In addition, the present invention can be applied to video conferencing and the like to provide an optimal service by separating and transmitting a variety of data according to the network conditions.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the claims equivalent to the claims of the present invention as well as the claims of the following.

1 is a diagram showing an interface structure of a node according to an embodiment of the present invention;

2 illustrates an IPv6 address format according to an embodiment of the present invention;

3 illustrates an interface identifier of an IPv6 address according to an embodiment of the present invention;

4 illustrates an interface identifier of an IPv6 address for inserting network interface characteristic information according to an embodiment of the present invention;

5 is a diagram illustrating an interface identifier of an IPv6 address for inserting network interface characteristic information according to another embodiment of the present invention;

6 is a flowchart illustrating the operation of a first node for generating an IPv6 address according to an embodiment of the present invention;

7 is a flowchart illustrating an operation of a second node for transmitting and receiving data using an IPv6 address including network interface characteristic information according to an embodiment of the present invention;

8 is a diagram showing the structure of a node for generating an Internet Protocol version 6 address according to an embodiment of the present invention;

9 is a diagram illustrating a structure of a node that transmits and receives data using an IPv6 address including network interface characteristic information according to an embodiment of the present invention.

Description of the Related Art [0002]

10: IPv6 Address 20: Network Prefix

30: interface identifier

800: first node 810: address generator

820: data transceiver

900: second node 910: address set selector

920: data transceiver

Claims (9)

An address generator for generating an internet protocol version 6 address including network interface characteristic information; And And a data transceiver for transmitting the generated internet protocol version 6 address to a network and transmitting and receiving data based on the network interface characteristic information. The Internet Protocol version 6 address includes a network prefix and an interface identifier, And the interface identifier includes a medium access control address and a reserved area, and a portion of the reserved area includes the network interface characteristic information. The method of claim 1, The data transmitting and receiving unit supports at least two communication schemes, and the data transmission and reception apparatus, characterized in that each having an interface for each communication scheme. The method of claim 1, The network interface characteristic information includes information about a communication method for communication method classification, And the network interface characteristic information is mapped to at least one of a transmission method, a transmission speed, a transmission distance, a reception sensitivity, and a transmission distance along with the information on the communication method. delete An address set selector for obtaining an internet protocol version 6 address of a counterpart node to transmit and receive data, and selecting an IP protocol 6 address set based on network interface characteristic information included in the internet protocol version 6 address of the counterpart node; And A data transceiver for receiving an Internet Protocol version 6 address of the counterpart node from a network and providing the counterpart selector to transmit and receive data with the counterpart node based on the selected address sets; The Internet Protocol version 6 address includes a network prefix and an interface identifier, the interface identifier includes a medium access control address and a reserved area, and some of the reserved area includes the network interface characteristic information. Data transceiver. 6. The method of claim 5, The data transmitting and receiving unit supports at least two communication schemes, and the data transmission and reception apparatus, characterized in that each having an interface for each communication scheme. 6. The method of claim 5, And the address set includes a selected portion of available Internet Protocol version 6 addresses of the counterpart node and a selected portion of Internet protocol version 6 addresses of the data transceiver. 6. The method of claim 5, The network interface characteristic information includes information about a communication method for communication method classification, And the network interface characteristic information is mapped to at least one of a transmission method, a transmission speed, a transmission distance, a reception sensitivity, and a transmission distance along with the information on the communication method. delete

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