KR20070107386A - Data communication system and data communication method - Google Patents

Abstract

A system and a method for data communication are provided to process network connection by using a heterogeneous network having short communication distance and simplified authentication processes such as an NFC(Near Field Communication), thereby removing the complexity that a user has to set network connection information one by one and quickly processing network connection. A data communication system comprises first to fourth communication modules. The first communication module(100) forms a first communication network(400). The second communication module(200) forms a second communication network(500) and transmits pre-stored network setup information of the first communication module. The third communication module(340) receives the setup information through the second communication network. The fourth communication module(320) receives the setup information by being the third communication module and forms the first communication network together with the first communication module by using the setup information.

Description

Data communication system and data communication method

1 is a block diagram schematically showing the overall components of a data communication system according to an embodiment of the invention.

2 is a flowchart illustrating a data communication method in accordance with an embodiment of the present invention.

3 is a block diagram showing the configuration when a data communication system according to an embodiment of the present invention is used in a mobile communication terminal and a headset.

4 is a diagram illustrating a configuration of a protocol stack used in Bluetooth communication of a data communication system according to an embodiment of the present invention.

5 is a data flow diagram illustrating an authentication procedure, a setup process, and data transmission of a data communication system according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: first Bluetooth module (first communication module) 200: RFID tag (second communication module)

300: communication unit 320: a second Bluetooth module (fourth communication module)

340: RFID reader (third communication module) 400: first communication network (Bluetooth network)

500: second communication network (RFID network) 600: headset

700: identification card 800: mobile communication terminal

The present invention relates to a data communication system and a data communication method using a short range wireless communication standard.

Recently, with the development of the communication field, attention has been focused on short-range wireless communication technology.

Short-range wireless communication is within 100m from information and communication devices such as computers, printers, telephones and facsimile, as well as home appliances such as TVs and refrigerators, such as Bluetooth, IRDA, and Shared Wireless Access Protocol (SWAP). Refers to a wireless interface standard capable of wireless data communication at a distance.

In particular, among short-range wireless communication, Bluetooth has a wide range of applications, and can be used for connecting computers and peripheral devices, mobile communication terminals, headphones, access cards, local area networks, etc., and two-way communication is possible. There is an advantage.

Since the Bluetooth standard is designed for use in a mobile environment, all the information is transmitted through a non-complementary radio medium, which requires an authentication process. Authentication is largely required for authentication and authorization. Divided by.

Access qualification authentication refers to a device identification process performed between terminals in order to form a network network, and the use authority authentication means that a user of an external device can use the corresponding application program for each application in a state where the connection between the external device and the corresponding device is established. The process of determining whether or not.

In other words, when the access qualification is made, the other device is connected with the corresponding device, and then the corresponding application is used through authentication of authorization while exchanging packets, and a separate encryption process is used to transmit information. Information can be protected by doing so.

Therefore, the data communication by the conventional Bluetooth module is a process that requires the user to input the authentication information and use information, and if the user transmits payment, personal information exchange, secret information, separate encryption (for example, password, social security number) , Credit card number) is inconvenient for the general public to use, and it seems to be a big limitation in use for the disabled or the elderly, especially the blind.

In addition, as described above, each time a user connects to a connection type local area network such as Bluetooth, the user must input personal information, authentication information, and the like, and authentication and device identification are performed.

As this is a problem directly related to the speed and convenience which are the most important in wireless data communication, there is a need for improvement.

The present invention uses a short-range wireless communication technology that processes a connection-type communication protocol such as Bluetooth, so that various types of short-range communication can be formed quickly and easily without inputting information for device identification and authentication. Incorporating the technology provides a data communication system whose functions are differentiated according to the network connection procedure.

In addition, the present invention provides a data communication system incorporating various types of short-range communication technology, the function differentiated according to the network connection procedure using a conventional product without having to configure a new product by combining each communication module The present invention provides a data communication method for efficiently transmitting and receiving data by performing data exchange and exchanging data in association with each other.

A data communication system according to the present invention comprises: a first communication module forming a first communication network; A second communication module for forming a second communication network and transmitting network setting information of the first communication module previously stored; A third communication module configured to receive the setting information through the second communication network; And a fourth communication module connected to the third communication module to receive the setting information and to form the first communication module and the first communication network using the setting information.

The data communication method according to the present invention comprises the steps of: forming a second communication network with a third communication module by a second communication module having first communication network setting information of the first communication module; Transmitting, by the second communication module, the setting information to the third communication module; Transmitting, by the third communication module, the setting information to a fourth communication module; And forming, by the fourth communication module and the first communication module, the first communication network using the setting information.

Hereinafter, a data communication system and a data communication method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing an entire component of a data communication system according to an embodiment of the present invention, and FIG. 2 is a flowchart illustrating a data communication method according to an embodiment of the present invention.

In describing the overall components of the data communication system according to an embodiment of the present invention with reference to FIG. 1, the data communication method will be described together to help understand the operation thereof.

1, a data communication system according to an exemplary embodiment of the present invention includes a first communication module 100, a second communication module 200, and a communication unit 300. The communication module 340 and the fourth communication module 320 is included.

First, the first communication module 100 and the fourth communication module 320 is a communication module for forming a first communication network 400 to perform data communication. In this case, the device identification and connection setting communication protocols are processed. The first communication network 400 is formed.

The device identification and connection establishment type communication protocols require setting information such as device identification information, user authority authentication information, data encryption information, etc., and are protocols for determining whether to establish a communication channel by identifying a device. Compared to the protocol, it has a relatively long communication distance (typically around 100m).

In an embodiment of the present invention, the first communication network 400 is a Bluetooth network, and the first communication module 100 and the fourth communication module 320 are Bluetooth modules (hereinafter, “first communication”). Module ”is referred to as a“ first Bluetooth module ”and“ fourth communication module ”is referred to as a“ second Bluetooth module ”.

Also, the second communication module 200 and the third communication module 340 form a second communication network 500 to perform data communication. In this case, the second communication module 500 processes the contact communication protocol. ).

The contact type communication protocol is a communication standard that allows two or more communication modules to automatically perform data communication when entering a predetermined communication range without inputting separate setting information. There is no process for selecting whether to set up a communication channel through the network. For example, RFID (Radio Frequency IDentification) may be used (commonly referred to as "NFC (Near Field Communication)").

In the embodiment of the present invention, the second communication network 500 is an RFID network, and the second communication module 200 and the third communication module 340 are RFID communication modules (hereinafter, "second communication module"). Denotes an "RFID tag", and a "third communication module" denotes an "RFID reader".

The first Bluetooth module 100 and the RFID tag 200 are configured as independent devices, and the second Bluetooth module 320 and the RFID reader 340 are mounted in one housing (or substrate) to communicate as a single device. Configure 300.

In particular, a separate communication relationship is not established between the first Bluetooth module 100 and the RFID tag 200, but the second Bluetooth module 320 and the RFID reader 340 are connected by wire to perform data communication.

For example, when the second Bluetooth module 320 and the RFID reader 340 are mounted on one substrate, data transmission of the second Bluetooth module 320 and the RFID reader 340 is performed through bonding patterns, transmission patterns, and routing patterns. The terminals may be interconnected.

The present invention, when the first Bluetooth module 100 and the second Bluetooth module 320 forms a Bluetooth network 400 to perform large-capacity data communication, the RFID tag 200 and the RFID reader 340 is a Bluetooth module A feature of the present invention is that the user's convenience is achieved by automatically processing the setting information.

For example, the user can easily process the authentication and encryption process by placing the RFID tag 200 near the RFID reader 340 instead of inputting configuration information into the Bluetooth module to receive the multimedia data. It can be downloaded to the terminal from.

Herein, the communication module and the communication networks may be provided with a UWB (Ultra Wide Band) as well as RFID and Bluetooth.

This function will be described with reference to FIG. 2 as follows.

First, a person carrying the first Bluetooth module 100 and the RFID tag 200 is located in a multimedia transmission device including the second Bluetooth module 320 and the RFID reader 340, and transmits the RFID tag 200 to the multimedia. When approaching the device, an information request signal periodically transmitted from the RFID reader 340 is received by the RFID tag 200 to form an RFID network 500 (S100).

The RFID tag 200 stores network setting information (hereinafter, referred to as “setting information”) of the first Bluetooth module 100. When the information request signal of the RFID reader 340 is received, the tag information and the tag information are stored. The setting information is transmitted to the RFID reader 340 together (S105).

That is, the RFID tag 200 is a device that is operated in a set with the first Bluetooth module 100, and is stored in the memory of the RFID tag 200 by a user's request at the time of product production or at a place such as a service agent. Setting information of the first Bluetooth module 100 may be recorded.

When the tag information and the setting information are transmitted to the RFID reader 340 and a predetermined time elapses (because the user will retrieve the RFID tag 200 after contacting the multimedia transmission device after a predetermined time passes), the RFID network 500 Is released (S110).

When the tag information and the setting information are transmitted, the RFID reader 340 checks whether or not there is a right to use Bluetooth communication using the tag information, and transmits the setting information to the second Bluetooth module 320 (S115). .

The RFID reader 340 receives the confirmation procedure using the tag information, because a person having an RFID tag different from another first Bluetooth module constituting the set can download the data without permission using a multimedia transmission device of another person. This is to prevent this.

Subsequently, the second Bluetooth module 320 forms a Bluetooth network 400 by setting a communication channel with the first Bluetooth module 100 using the setting information of the first Bluetooth module 100 (S120).

When the Bluetooth network 400 is established, the first Bluetooth module 100 and the second Bluetooth module 320 perform data communication, and the holder can receive multimedia data to his or her second Bluetooth module 320. There is (S125).

3 is a block diagram illustrating a configuration of a data communication system according to an exemplary embodiment of the present invention when used in the mobile communication terminal 800 and the headset 600.

Referring to Figure 3, each component of the data communication system according to an embodiment of the present invention can be seen in the form used in the headset 600 device for receiving and outputting audio data from the mobile communication terminal 800 in a wireless channel. The first Bluetooth module 100 is provided in the headset 600, and the RFID tag 200 is provided in the user's identification card (which can be attached to an item easy to be carried by an identity card, a wallet, etc.) 700. The RFID reader 340 and the second Bluetooth module 320 are provided in the mobile communication terminal 800.

Therefore, when the user touches the identification card 700 to his mobile communication terminal 800 (hereinafter, "contact" is used to mean "located within a predetermined distance from the reference article"), mobile communication The RFID reader 340 of the terminal 800 authenticates the permission to use, and transmits setting information of the first Bluetooth module 100 of the headset 600 to the second Bluetooth module 320.

The second Bluetooth module 320 and the first Bluetooth module 100 processes a Bluetooth protocol to set a communication channel (a process of setting the communication channel will be described in detail below), and the second Bluetooth module 320 ) Requests data transmission to the control unit of the mobile communication terminal 800.

The controller of the mobile communication terminal 800 transmits the audio data recorded in the storage means to the second Bluetooth module 320, and the second Bluetooth module 320 transmits the audio data to the first Bluetooth module 100. The user may listen to music with the wireless headset 600.

Hereinafter, the main components will be described in detail.

4 is a diagram illustrating a configuration of a protocol stack used in Bluetooth communication of a data communication system according to an embodiment of the present invention.

According to Figure 4, the protocol stack of the Bluetooth communication used in the data communication system of the present invention is a Bluetooth Radio layer, Baseband (Baseband) layer, Link Management Protocol (LMP) layer, Host Controller Interface (HCI), Logical Link (L2CAP) Control and Adaptation Protocol (RFCOMM) layer, RFCOMM (Cable Replacement Protocol) layer, SDP (Service Discovery Protocol) layer, TCS Telephony Control Protocol Specification Binary (BIN) layer, AT command layer, Point-t-Point (PPP) layer, TCP / It includes UDP / IP layer, WAP / WAE layer, OBEX (Object Exchange Protocol) layer, and vCard / vCalender layer.

The Bluetooth Radio layer defines a physical channel and uses a frequency of 2.4 GHz to 2.484 GHz.

The baseband layer defines a physical channel and is responsible for frequency hopping. Since the data in the packet state uses the frequency hopping spread spectrum method, Bluetooth plays a role of synchronizing a clock with a hopping frequency of a terminal equipped with a Bluetooth module using an inquiry and paging method.

The baseband layer provides two physical connection methods, which are classified into SCO (Synchronous Connection Oriented) used for data communication and voice communication and Asynchronous Connection Less (ACL) mainly used for data communication.

The LMP layer establishes a link between terminals equipped with a Bluetooth module and functions for security. For example, it functions to generate, exchange, check, manage piconet connection, and control the baseband packet size.

The L2CAP layer is located above the baseband and provides a service that plays a multi-communication function, division and combination of data, and group abstraction for the upper protocol stack.

The SDP layer provides a service for pre-determining the use of the Bluetooth module, and by using the SDP layer to grasp the information provided by the terminal with each Bluetooth module, the contents of the service to enable communication between the terminals. do.

The RFCOMM layer is a protocol that replaces serial transmission such as RS-232C connecting a modem. The RFCOMM layer supports RS-232C control and data signals on a baseband for a higher protocol that requires a serial transmission function.

The TCS BIN layer defines a call control signal for establishing voice or call data between Bluetooth devices.

The AT command layer controls a mobile phone or a modem, the PPP layer is defined to establish a one-to-one connection of a Bluetooth device, the TCP / UDP / IP layer enables Internet access, and the WAP / WAE The layer is used to provide Internet contents or additional services to the mobile communication terminal 800 through a wireless network.

The OBEX layer is a protocol for exchanging data using a client / server model, and the vCard / vCalender layer is a protocol for defining electronic business cards, personal calendar input, schedule management, and the like.

5 is a data flow diagram illustrating an authentication procedure, a setup process, and data transmission of a data communication system according to an exemplary embodiment of the present invention.

First, the RFID tag 200 and the RFID reader 340 transmit / process an RFID protocol packet to form an RFID network 500 (S10).

When the RFID network 500 is formed, the RFID tag 200 transmits tag information and network setting information (address information) of the first Bluetooth module 100 to the RFID reader 340 (S11).

The RFID reader 340 transmits the setting information to the second Bluetooth module 320 (S12), and when the setting information is transmitted, the second Bluetooth module 320 transmits its setting information including a starting address and a destination address. It generates (S13) and delivers to the first Bluetooth module 100 (S14).

When the network configuration information of the second Bluetooth module 320 is transmitted, the first Bluetooth module 100 registers it in its memory and establishes a communication channel, and then sends an ACK (Acknowledge) signal to the second Bluetooth module 320. Transfer to (S15).

Upon receiving the ACK signal, the second Bluetooth module 320 transmits its authentication key information to the first Bluetooth module 100 (S16), and correspondingly, the first Bluetooth module 100 also transmits its authentication key information. It transmits to the second Bluetooth module 320 (S17).

Here, the authentication key information refers to a code used when encoding (encrypting) data when transmitting and a code used when decoding encrypted data when receiving. For example, a developer may use a PIN key. Code keys directly input to the device, and link keys (code keys generated automatically each time a Bluetooth module is connected).

When the Bluetooth network 400 is formed through the above process, in order to set the type of data file to be transmitted through the Bluetooth network 400, the first Bluetooth module 100 and the second Bluetooth module 320 are printers, faxes. In accordance with the service usage type, such as a headset, the setup information is transmitted to each other (S18).

Accordingly, the second Bluetooth module 320 recognizes that the first Bluetooth module 100 will be operated for the headset, and transmits the data in accordance with the audio data packet standard.

Finally, when the second Bluetooth module 320 transmits the operation data through the remote controller key of the headset 600 from the first Bluetooth module 100, the second Bluetooth module 320 transmits the data to the controller of the mobile communication terminal 800. Interpret this and extract the corresponding audio file.

The second Bluetooth module 320 transmits the extracted audio file to the first Bluetooth module 100, and the first Bluetooth module 100 receives the audio file in packet units and stores the extracted audio file in a memory.

When the audio file stored in the memory of the first Bluetooth module 100 is streamed and delivered, the D / A converter converts it to an analog signal and the speaker outputs the analog signal (S19).

Although the present invention has been described above with reference to the embodiments, these are only examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains may have an abnormality within the scope not departing from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not illustrated. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the present invention, in a system for performing data communication having a relatively long communication distance and difficult authentication procedure, such as Bluetooth, by processing a network connection using a heterogeneous network having a short communication distance and simplified authentication procedure, such as NFC There is an effect that can provide a data communication system that can quickly handle the network access, eliminating the hassle of having to set the network access information manually.

In addition, according to the present invention, in configuring a data communication system using a heterogeneous network, it is possible to easily implement in software using a conventional communication product without having to develop a new product. In other words, the effort is reduced, and there is an effect of providing convenience to the consumer.

Claims (10)

A first communication module forming a first communication network; A second communication module for forming a second communication network and transmitting network setting information of the first communication module previously stored; A third communication module configured to receive the setting information through the second communication network; And And a fourth communication module connected to the third communication module to receive the setting information and to form the first communication module and the first communication network using the setting information. The method of claim 1, wherein the second communication module and the third communication module And when the setting information is transmitted from the second communication module to the third communication module, terminating the connection of the second communication network. The method of claim 1, wherein the communication network At least one of a Bluetooth network, an RFID network, and a UWB network. The method of claim 1, wherein the communication module At least one of an RFID module, a Bluetooth module, and a UWB module. The method of claim 1, wherein the setting information is And a network address of the first communication module. The method of claim 1, And a third communication unit including the third communication module and the fourth communication module, wherein the third communication module and the fourth communication module are connected by wire within the communication unit. The method of claim 1, wherein the setting information is And at least one of device identification information and authentication key information of the first communication module. Forming a second communication network with a third communication module by a second communication module having first communication network setting information of the first communication module; Transmitting, by the second communication module, the setting information to the third communication module; Transmitting, by the third communication module, the setting information to a fourth communication module; And And forming, by the fourth communication module and the first communication module, the first communication network using the setting information. The method of claim 8, wherein the transmitting of the setting information to the third communication module comprises: And when the setting information is transmitted to the third communication module, the second communication module and the third communication module terminating the connection to the second communication network. The method of claim 8, wherein the transmitting of the setting information to the fourth communication module is performed. And transmitting, by the third communication module, the setting information to the fourth communication module through a wire.

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