KR20040021030A - method for transferring a broad casting data of the ring type network system - Google Patents

Abstract

PURPOSE: A method of transmitting broadcasting data of a ring type network system is provided to transmit messages in a broadcast mode to reduce a period of time required for transmitting the messages. CONSTITUTION: A broadcast address is previously designated in the third layer of each node in a 7-layer network node system(S2). When a broadcast message is received(S3), it is confirmed whether the currently received broadcast message is identical to a previously received message(S4). When the currently received broadcast message is identical to the previously received message, the message packet is not transmitted to an upper layer but wasted(S5). When the currently received message is not identical to the previously received message, the currently received message packet is transmitted to the upper layer and, at the same time, delivered to another node in the opposite direction(S6).

Description

Method for transferring a broad casting data of the ring type network system}

The present invention relates to a method of transmitting broadcasting data in a ring network system. In particular, the address for broadcasting is previously assigned to the layer 3 address of a corresponding node that needs to be transmitted. The present invention relates to a method of transmitting broadcasting data of a ring network system that determines whether a cascade address is provided and then executes a function of discarding a broadcast message and transmitting a function to another node.

In general, as the industrial society develops, information communication systems are widely used to transfer data from one point to another desired more appropriately and quickly. Such communication systems are usually homogeneous or heterogeneous communication devices which are geographically dispersed. In most cases, information devices are connected to a network to enable sharing and communication of resources. In addition, in such a network, a multiplexing system is usually used to exchange information converted into an electric signal with a counterpart.

By the way, in the multiplexing systems as described above, for example, an OSI (open system interconnection environment) environment or a TCP / IP protocol is used to synchronize signals transmitted between each node, for example, internal functional boards. As shown in FIG. 1, a network using the standard includes a network corresponding to a physical layer corresponding to a first layer, a data link layer corresponding to a second layer, and a third layer as shown in FIG. 1. It consists of seven layers, such as a layer, a transport layer corresponding to the fourth layer, a session layer corresponding to the fifth layer, a presentation layer corresponding to the sixth layer, a presentation layer corresponding to the sixth layer, and an application layer. Here, the ring-type network does not support broadcast type transmission because the lower layer 2 uses a point-to-point type protocol such as HDLC, LAPD, and PPP.

On the other hand, when looking at the data transmission method for each node of the network as described above, when it is necessary to first transmit a message or a file to all nodes, it transmits daily to each node in a unicast method, for example, as shown in FIG. Likewise, when the first node 70 needs to broadcast the same file or message to all nodes, the broadcast function is not supported on the present network. Therefore, the first node 70 first transmits the same file or message to the second node 71. When the transmission of the second node 71 is completed, the message or file is transmitted from the first node 70 to the third node 72 via the second node 71.

In this case, in order to transmit data for broadcasting from the first node 70 to the third node 72 via the second node 71, the data is processed through seven layers of the first node 70. After that route to the second node (71). Then, the second node 71 processes the data via all seven layers and transmits the data to the third node 72 so that the third node 72 also processes the data via all seven layers. .

However, in the conventional ring network system as described above, in order to transmit a message or file data to a non-adjacent node, it must be processed through the seven layers of the adjacent node one by one, thus occupying a large capacity in the network and degrading performance. Transmission time has also increased considerably. Also, in this ring-type network, processing is required only through seven layers of nodes in order to transmit data. Therefore, as the number of nodes increases, the transmission speed and performance decrease accordingly, resulting in inefficiency of the transmission path. There was a problem to increase the.

Accordingly, the present invention has been invented to solve the above conventional problems, by designating a broadcast address in advance in the three-layer address of the node that needs broadcast transmission, and confirming the duplicate flag field in the reception address upon reception; After judging whether the broadcast address is determined or not, the broadcast message is discarded and transmitted to other nodes according to the determination result. Therefore, the same message is transmitted to each node without the need to transmit it to each node. An object of the present invention is to provide a broadcasting data transmission method of a ring network system that can significantly reduce a message transmission time.

Another object of the present invention is not to process a message at every layer of each node during broadcast transmission, but is transmitted immediately by the three layers of each node where the broadcast address is stored so that network performance or network congestion does not occur. Accordingly, the present invention provides a broadcasting data transmission method of a ring network system that can maximize network transmission efficiency.

The present invention for achieving the above object is a broadcast address storage step of pre-designating the address for the broadcast in the third layer of each node in the network node system of the seventh layer, and the broadcast signal after the broadcast address storage step A message duplication step of acknowledging receipt and confirming whether the current message is the same as a previously received message; and if the message duplication step confirms that the current message is the same as a previously received message, Duplicate message discarding step that discards the message packet without transmitting it to the upper layer, and when the message duplication check step confirms that the current message is not the same as the previously received message, the currently received message packet is transferred to the higher layer. In addition to the forwarding step, the message transfer step transmits to another node in the opposite direction. It provides broadcast data transmission method for systems with broken ring network.

1 is an explanatory diagram illustrating a conventional network system.

2 is an explanatory diagram illustrating a configuration of a node of a conventional network system.

3 is an explanatory diagram illustrating a network system of the present invention.

4 is an explanatory diagram illustrating a function of a node of the network system of the present invention.

5 is a flowchart of the present invention.

<Detailed Description of Codes>

1: first node 2: second node

3: third node 4: fourth node

5: third layer

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

3 to 4, the network device to which the present invention is applied is described with reference to FIGS. 3 to 4, and includes first and second layers including seven layers and a third layer having a function of checking duplicated and discarded packets and transmitting them in the opposite direction. It consists of four nodes (1 to 4).

In this case, the third layer 5 of each of the nodes 1 to 4 checks whether the packet data is received from adjacent nodes, and if the packet data is duplicated, uploads the new data to the upper layer and transmits the data to the opposite direction. On the other hand, if the received data is duplicate data, it is discarded. In addition, the third layer is provided with a flag register for checking whether a broadcast message is overlapped.

Next, the transmission method of the present invention as described above will be described.

The present invention proceeds to the broadcast address storage step S2 in the initial state S1 as shown in FIG. 5, and pre-specifies the address for the broadcast in three layers of each node. After the broadcast address storage step S2, the broadcast message reception determination step S3 is performed to determine whether a broadcast signal is currently received from another node. At this time, if it is determined during the broadcast message reception determining step (S3), if the broadcast message is not received, the process proceeds to the normal function execution mode, processes the set function, and ends.

However, if it is determined during the broadcast message reception determining step S3, if a broadcast message is received, the process proceeds to the message duplication check step S4 to determine whether the current message is the same as the previously received message. At this time, if the current message is the same as the previously received message as a result of the determination during the message duplication check step (S4), proceed to the duplicate message discard step (S5) and discard the current duplicate message packet without transmitting to the upper layer. Let's do it.

However, if the current message is not the same as the previously received message as a result of the determination during the message duplication confirmation step (S4), the process proceeds to the message transmission step (S6) and delivers the currently received message packet to a higher layer. Transmit to another node in the opposite direction.

In other words, first, each of the nodes 1 to 4 assigns an address for a broadcast to layer 3 in advance, as shown in FIG. At this time, when it is necessary to transmit the same message to a broadcast address from any node, for example, the first node 1, the first node 1 processes the message to be transmitted through seven layers. Next, the data is transmitted to the second node 2 and the fourth node 4 through the first layer. Then, the message signal of the first node 1 is not transmitted to all seven layers of each node as shown in FIG. 4, but the first and second layers of the second node 2 and the fourth node 4. Only the third layer is received via the second layer. At this time, the third layer of the second node and the fourth node 4 checks whether the currently received message packet signal is stored in an internal duplicate flag field. In this case, if it is determined that the received packet signal is not a duplicate signal, the third layer 5 transmits the message packet signal to the upper layer, respectively, to the node, that is, the fourth node 4 in the opposite direction. send.

Then, the fourth node 4 also checks whether the message packet signal currently input in the third layer 5 is duplicated through the duplicate flag field, and if the signal is not duplicated, delivers it to the upper series to perform a normal message processing function. Let's do it. At this time, if the input message packet signal is a duplicate signal, the third layer 5 discards it.

For example, in the case of the third node 3, a message is received from the second node 2 and the fourth node 4 in duplicate. In this case, only the message signal that arrives first is transferred to the upper layer, and the message signal that arrives later is Discard it.

Therefore, according to the present invention, since the message is not processed through all layers of each node, the transmission path is simple. And, duplicate messages can be processed quickly.

As described above, according to the present invention, the address for broadcasting is assigned to the layer 3 address of the node that needs to transmit the broadcast in advance, and upon reception, the duplicate flag field in the receiving address is determined to determine whether the broadcast address is present. According to the result, the broadcast message is discarded and transmitted to other nodes. Therefore, the same message is transmitted to each node without the need to send it to each node. Therefore, the message transmission time can be considerably reduced. Have.

In addition, according to the present invention, since the message is not processed at all layers of each node during broadcast transmission, it is immediately transmitted by the three layers of each node where the broadcast address is stored, so that network performance or network congestion does not occur. Accordingly, there is also an effect to maximize the transmission efficiency of the network.

Claims (3)

The broadcast address storage step of pre-specifying the address for the broadcast in the third layer of each node in the seven-layer network node system, and after the broadcast address storage step, confirms that the broadcast message is received and the current message is previously received. A message duplication confirmation step of checking whether the message is identical to the received message, and when the message duplication check step confirms that the current message is the same as a previously received message, the current duplicate message packet is discarded without being sent to a higher layer. When the duplicate message discarding step and the message duplication check step confirm that the current message is not the same as the previously received message, the currently received message packet is transmitted to the upper layer and transmitted to another node in the opposite direction. Ring-type network, characterized in that consisting of a message transmission step Broadcast data transmission method of the system. The method of claim 1, wherein the message duplication acknowledgment is confirmed through a duplicate flag field register during the message duplication acknowledgment step. 2. The method of claim 1, wherein the message duplication confirmation step, duplicate message discard step, and message transmission step are processed in a third layer of the seventh layer network configuration.