KR100297818B1 - A communication system between ieee 1394 networks by use of external communication network and method for thereof - Google Patents

Abstract

The technical field to which the invention described in the claims belongs.

It relates to an IEEE 1394 network.

B. Technical problem to be solved

The present invention provides a communication system and method between a 1394 network connected to an external communication network through an IEEE 1394 network terminator capable of real-time communication, an IEEE 1394 characteristic.

C. Summary of the Solution

The conventional IEEE 1394 networks are connected to each node of the IEEE 1394 network and convert data received from an external communication network into data of an internal protocol type of the IEEE 1394 network, and convert data of an IEEE 1394 network internal protocol type of the external communication network. It is characterized by enabling real-time high-speed communication between different IEEE 1394 networks by connecting to an external communication network through an IEEE 1394 network terminator that converts data according to a protocol type.

D. Significant Uses of the Invention

Used to perform communication between IEEE 1394 networks using an external communication network.

Description

A COMMUNICATION SYSTEM BETWEEN IEEE 1394 NETWORKS BY USE OF EXTERNAL COMMUNICATION NETWORK AND METHOD FOR THEREOF}

The present invention relates to an IEEE 1394 network connected by an IEEE 1394 serial bus, and more particularly, to a communication system and method between IEEE 1394 networks using only external communication.

In general, IEEE 1394 is a next-generation multimedia interface device capable of exchanging information between various multimedia devices in accordance with the specifications established by the IEEE. In particular, a personal computer (hereinafter, referred to as a "PC") and peripheral devices such as a mouse and a printer Unlike conventional interface devices that only allow connections between devices such as scanners, scanners, etc., this refers to a serial bus standard that enables real-time transmission and reception of voice and image data between next-generation multimedia devices. As described above, free and real-time high-speed communication between multimedia devices on a network connected by IEEE 1394 has been achieved, and connection with an external IEEE 1394 network is now important. Unlike the existing LAN (Local Area Network) connected to the external network through the Internet, it was impossible to realize real-time service without additional application protocols such as RSVP, RTP, etc. When the connection is made, it is expected that the utility will be greatly increased because the real-time service by high-speed communication is possible without additional application protocol between the IEEE 1394 networks.

As described above, although the conventional LAN is connected to an external network through the Internet, real-time services cannot be realized without additional application protocols such as RSVP and RTP. It is expected that real-time service by high-speed communication will be possible without additional application protocol between connected IEEE 1394 networks.

Accordingly, an object of the present invention is to provide a communication system and method consisting of IEEE 1394 networks connected to an external communication network.

1 is a connection configuration diagram between an IEEE 1394 network connected through an external ATM network according to an embodiment of the present invention;

2 is a functional block diagram of a specific node and IEEE 1394 NT of a calling party and a called party IEEE 1394 network connected through an external ATM network according to an embodiment of the present invention;

3 is a diagram illustrating an information transmission process for communication between IEEE 1394 networks using an ATM network according to an embodiment of the present invention;

4 is a flowchart illustrating processing at a specific node of an originating IEEE 1394 network for communication between IEEE 1394 networks connected to an external ATM network according to an embodiment of the present invention;

FIG. 5 is a flowchart of processing at a specific node of a destination IEEE 1394 network for communication between IEEE 1394 networks connected to an external ATM network according to an embodiment of the present invention; FIG.

The present invention for achieving the above object is to connect the conventional IEEE 1394 networks to each node of the IEEE 1394 network, converts data received from an external communication network into data in the form of the internal protocol of the IEEE 1394 network and IEEE 1394 network It is characterized in that real-time high-speed communication between different IEEE 1394 networks by connecting to the external communication network through the IEEE 1394 network terminator for converting the data of the internal protocol type to the data according to the protocol type of the external communication network.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description and in the accompanying drawings, in order to provide a more thorough understanding of the present invention. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 illustrates a connection configuration between an IEEE 1394 network connected through an ATM network, which is an external communication network, according to an embodiment of the present invention. In particular, the embodiment of the present invention shows that a plurality of IEEE 1394 networks are connected through an ATM network that provides a wide bandwidth according to the user's request of the external communication network and can accommodate the real-time services that are characteristic of IEEE 1394 without difficulty. Referring to FIG. 1, IEEE 1394 networks 100 and 108 are devices each supporting an IEEE 1394 serial bus, and each node complies with the standard of IEEE 1394-1995. In addition, the devices connected to each node are connected to each other using an IEEE 1394 standard cable to use IEEE 1394 for inter-node communication, and include IEEE 1394 network terminators (hereinafter referred to as "NTs") 102 and 106 as one node. IEEE 1394 NT (102, 106) has an IEEE 1394 interface for interfacing with each node of IEEE 1394 network (100, 108) and at the same time has an ATM network interface for connection with ATM network 104. In addition, software for controlling the IEEE 1394 interface and the ATM network interface is implemented, thereby controlling both interfaces and processing the data received from the ATM network 104 to transmit the data transmitted by the source or destination IEEE 1394 network (100, 108). It extracts and converts the data of the internal IEEE 1394 network (100, 108) into data suitable for the ATM network (104).

2 illustrates a functional block diagram of a specific node of an originating and terminating IEEE 1394 network and an IEEE 1394 NT connected through an ATM network according to an exemplary embodiment of the present invention. Referring to FIG. 2, any one specific node 200 of the calling IEEE 1394 network includes a communication application module 204 for communicating with an external communication network, that is, a called IEEE 1394 network via an ATM network 104. An IEEE 1394 interface 208 is provided for interfacing with an external network connection client module 206 and IEEE 1394 NT 102. The communication application module 204 is application software for receiving and processing a communication request from the user to an internal communication of the IEEE 1394 network or an external communication network, that is, the destination IEEE 1394 network using the connection with the ATM network 104. The external network connection client module 206 receives a user request from the communication application module 204 that wants to connect with an external communication network, that is, the ATM network 104, and transmits it to the external network connection server module provided in the IEEE 1394 NT 102 ( And communicate the result to the communication application module 204. The IEEE 1394 interface 208 interfaces with data transmitted / received from the IEEE 1394 NT 210.

In addition, the IEEE 1394 NT 102 connected to each node of the IEEE 1394 network for communication with the external communication network, that is, the ATM network 104 according to an embodiment of the present invention is connected to the external network connection server module 210, data conversion module 214, access software module 216, and ATM network interface 218. The external network connection server module 210 drives the connection software module 216 in accordance with a communication request received from the external network connection client module 206 to perform a connection with an external communication network, that is, the ATM network 104, and displays the result. Forward to external network connection client module 206. The data conversion module 214 processes the data received from the ATM network 104, extracts data transmitted by the calling or destination IEEE 1394 network, and converts the data of the internal IEEE 1394 network into data suitable for the ATM network 104. Convert The access software module 216 performs a signaling operation to establish a connection with the ATM network 104 and establishes a connection with the ATM network 104 at the request of the external network connection server module 210. do.

3 is a diagram illustrating an information transmission process for communication with a destination IEEE 1394 network using an ATM network.

4 and 5 illustrate a process flow in which communication is performed between IEEE 1394 networks connected to an external ATM network according to an embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 2, 3, 4, and 5.

First, when a user of a device 200 connected to a specific node of a calling IEEE 1394 network wants to communicate with a device 202 connected to a specific node of a called IEEE 1394 network connected to an external ATM network 104, the user first communicates with the user. The communication application module 204 of the originating node receiving the request generates a connection request message in step 400 and transmits it to the originating IEEE 1394 NT 102. The connection request message includes all the information included in the setup message of the standard ATM signaling such as the required bandwidth and QOS parameters, ATM addresses, and the like. Accordingly, the connection request message generated from the source communication application module 204 as described above is transmitted to the source IEEE 1394 NT 102 through the source external network connection client module 206 as shown in FIG. Sending to the external network connection server module 210, if the ATM signaling is successfully performed after the ATM signaling for the connection through the destination IEEE 1394 NT (106) and ATM network 104, the originating communication application A connection response message (Connection Request_Result) is sent to the module 204. The ATM signaling means a process of exchanging setup messages such as a request bandwidth, a QOS parameter, an ATM address, and the like, included in the connection request message. Then, the calling communication application module 204 receives the connection response message in step 402 to confirm that the connection is established with the called IEEE 1394 NT 106, and proceeds to step 404 to the called IEEE 1394 NT ( In step 406, it is checked whether the Bus_Inf_D message is received while waiting for a node information message (Bus_Inf_D) of the called IEEE 1394 network containing information about each node of the called IEEE 1394 network connected to the terminal. The Bus_Inf_D message is a message transmitted from the called IEEE 1394 NT 106 to the calling IEEE 1394 NT 102 when the ATM signaling is successfully performed. It contains information about each node of the destination IEEE 1394 network such as the EUI-64 value, the unique device name that maps to the EUI-64 value, and the Node_id of the root. It is sent to the originating communication application module 204 via the connection client module 206. Accordingly, the calling side communication application module 204 proceeds from step 406 to step 408 to communicate with the user among devices existing in nodes of the called IEEE 1394 network included in the Bus_Inf_D message. The device 202 of a particular node will be selected. The calling party communication application module 204 proceeds to step 410 and the calling party node including its own name and its unique name mapped to the node_id, EUI-64 value, and EUI-64 value of itself and the root. An information message (Bus_Inf_S) is transmitted to the communication application module 230 of the specific node of the called IEEE 1394 network. The calling party communication application module 204 proceeds to step 412 and receives a node information acknowledgment message Bus_Inf_Ack to be transmitted in response to the Bus_Inf_S message by the called party communication application module 230 that has received the Bus_Inf_S message. While waiting for reception, the process proceeds to step 414 to check whether a Bus_Inf_Ack message is received. Meanwhile, the Bus_Inf_S message transmitted to the called party communication application module 230 in step 410 is transmitted to the calling party IEEE 1394 NT 102 via the calling party external network connection client module 206 as shown in FIG. 3. Transmitted to the external network connection server module 210 of the destination and transmitted back to the external network connection server module 220 of the destination IEEE 1394 NT 106 via the ATM network 104 and the destination external network connection client module 232 Is transmitted to the called party communication application module (230). Accordingly, the called party communication application module 230 receives the Bus_Inf_S message in step 500 and proceeds to step 502 to send a Bus_Inf_Ack message to the calling party communication application module 204 indicating that the Bus_Inf_S message has been received. Send. Then, the Bus_Inf_Ack message is transmitted to the external network connection server module 220 of the destination IEEE 1394 NT 106 via the called party's external network connection client module 232 as shown in FIG. Is transmitted back to the external network connection server module 210 of the source IEEE 1394 NT 102 and through the source external network connection client module 206 to the source communication application module 204. In response, the calling side communication application module 204 proceeds from step 414 to step 416 to transmit various data for communication to the called party communication application module 230 and performs communication. Accordingly, the called party communication application module 230 also transmits data in response to various data transmitted from the calling party to the calling party communication application module 204 in step 504. Therefore, a connection is established between the specific node of the originating IEEE 1394 network and the specific node of the terminating IEEE 1394 network through the external ATM network 104, thereby enabling real-time communication, which is characteristic of the IEEE 1394 network. Then, the calling party communication application module 204 proceeds to step 418 and checks whether or not to terminate the communication, and recognizes a key input for terminating communication from the user, and proceeds to step 420 to disconnect the message. Release) to the called party communication application module 230. Accordingly, the disconnection message generated from the originating communication application module 204 as described above is transmitted to the originating IEEE 1394 NT 102 through the originating external network connection client module 206 as shown in FIG. When ATM signaling for disconnection is successfully performed after being transmitted to the external network connection server module 210 and ATM signaling with the destination IEEE 1394 NT 106 is performed, disconnection is made to the calling party communication application module 204. A response message is sent. In step 422, the calling party communication application module 204 receives the disconnection response message (Connection Release_Result) and proceeds to step 424 to release the connection with the called party IEEE 1394 NT 106. Meanwhile, the called party communication application module 230 also disconnects completion message transmitted from the called party IEEE 1394 NT 106 by the disconnect message generated from the calling party communication application module 204 in step 420 (Connection Release_Complete). In response to this, the process proceeds to step 508 to release the connection establishment with the calling party communication application module 204.

As described above, the present invention configures a network using an IEEE 1394 serial bus and connects it to another IEEE 1394 network through an external communication network, thereby enabling real-time service between high-speed communication through an external communication network between different IEEE 1394 networks. have.

Claims (5)

In a communication system between an Eye Triple E (IEEE) 1394 network connected to an external communication network through an Eye Triple E (IEEE) 1394 network terminator (NT), It supports i Triple 13 (IEEE) 1394 serial bus to each node of the i triple (IEEE) 1394 network and communicates with the i triple 13 (network) and the external communication network according to the communication request from the user. A number of IEEE 1394 networks that are connected and configured It is connected to each node of the IEEE 1394 network and is connected to the external communication network to convert data received from the external communication network into data of an internal protocol type of the IEEE triple 1394 network, A number of IEEE 1394 network terminators (NT) for converting data in an IEEE 1394 network internal protocol form into data in a protocol format of the external communication network; An external communication network connected to the IEEE 1394 network terminators (NTs) to establish a connection between the IEEE triple 13 (IEEE) 1394 networks, Devices connected to each node of the IEEE 1394 network, An Eye Triple E (IEEE) 1394 interface for interfacing data transmitted / received with the Eye Triple E (IEEE) 1394 network terminator (NT), A communication application module for performing external communication with an iEE 1394 network internal communication and a remote i Triple 13 (IEEE) 1394 network using a connection with the external communication network according to a communication request from a user; Accepts a request to communicate with a remote Eye Triple 1394 network from the user, which is authorized from the communication application module, and sends it to the Eye Triple 13 13 network terminator (NT) via the Eye Triple 1394 interface. And an external network connection client module for transmitting the result to the communication application module. The method of claim 1, wherein the Eye Triple E 1394 Network Terminator (NT), An IEEE 1394 interface for interfacing data transmitted / received with each node of the IEEE 1394 network, An external communication network interface for interfacing data transmitted / received with the external communication network; Converts data received from the external communication network into data of an internal protocol form of an IEEE 1394 network, and internally receives an IEEE 1394 network received from each node of the IEEE 1394 network. A data conversion module for converting protocol type data into protocol type data of the external communication network; An access software module for performing signaling for establishing a connection with the external communication network; Upon receiving a request for communication with a remote eye triple 13 (IEEE) 1394 network from the external network connection client module, the connection software module is controlled to establish a connection with the external communication network. An IEEE 1394 network communication system using an external communication network comprising an external network connection server module for transmitting to an external network connection client module through an IEEE 1394 interface. The method of claim 2, wherein the external communication network, IEEE 1394 communication system using an external communication network characterized in that the ATM network that can accommodate the real-time services of the IEEE 1394. In a method of communication between an Eye Triple E (IEEE) 1394 network connected to an external communication network through an Eye Triple E (IEEE) 1394 network terminator (NT), Any one of the triple triple (IEEE) 1394 networks, if there is a communication request from a particular node of the triple triple (IEEE) 1394 network with the other triple triple (IEEE) 1394 network connected via the external communication network; A process in which a connection request message is generated from a specific node of an IEEE 1394 network where a request is generated and transmitted to an IEEE 1394 network terminator (NT); Establishing a connection via the external communication network to the called party's triple triple (IEEE) 1394 network by the calling party triple triple (IEEE) 1394 network terminator (NT) in response to the connection request message; , When the connection setting is made, the connection eye confirmation message transmitted from the calling party eye triple terminator (IEEE) 1394 network terminator (NT) is received, and as the connection setting is made, the called eye eye triple tooth (IEEE) 1394 is received. Receiving information of nodes connected to the called eye triplex (IEEE) 1394 network transmitted from a network terminator (NT); Transmitting its node information to a specific node to communicate among the nodes of the called eye triplex (IEEE) 1394 network; Receive a node information acknowledgment message generated and transmitted from a specific node of the called party triplex (IEEE) 1394 network that has received the transmitted calling party node information, and receives the called node triplex (IEEE) 1394 network. It consists of a process of performing communication through a specific node and the external communication network, Node information of the called eye triplex (IEEE) 1394 network, Uniqueness of the devices mapped to the EUI-64 value and the EUI-64 value of all devices present in the node of the destination eye triple E 1394 network. A communication method between an IEE 1394 network using an external communication network, comprising a name and a node ID of a root of the called IEE 1394 network. The method of claim 4, wherein When communication with a specific node of the called-party triple triple (IEEE) 1394 network is terminated through the external communication network, a disconnection message is generated from a particular node of the calling-party triple triple (IEEE) 1394 network and the calling-party eye is generated. Transmitted to a triple E 1394 network terminator (NT), The connection establishment via the external communication network with the called party's triple triple (IEEE) 1394 network that is requested to release the communication by the calling party triple triple (IEEE) 1394 network terminator (NT) in response to the disconnect message. A communication method between an IEEE 1394 network using an external communication network, further comprising a process of releasing.