KR100390397B1 - method for transmitting data in internet conncetion device - Google Patents

Abstract

In the data transmission method of the Internet access device, the channel_number obtained from the bus system access node that acquires the channel is transmitted in the ARP request packet to transmit isochronous data when the Internet is connected. It is to send the isochronous data to the designated channel_number after receiving the ARP request / response packet properly by receiving the ARP request packet by copying the channel_number to the ARP response packet in the access PC. In a data transmission method of an Internet access device that transmits data after connecting to the Internet using a request / response packet, isochronous data is stored in the ARP request packet. Filling in the sander channel number for transmitting the number and transmitting; When the ARP response packet is received, an isochronous data is transmitted to a corresponding channel.

Description

Method for transmitting data in internet conncetion device

The present invention relates to an internet access device, and more particularly, to a data transmission method of an internet access device for transmitting isochronous data.

Hereinafter, an apparatus and method for controlling internet access in a bus system according to the related art will be described with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating a connection between a typical 1394 serial bus system and an Internet environment. 1394 access nodes # 0 to # 4 (1 to 5) having respective IP_addresses, TCP / IP formats, and 1394 packets. It consists of an IP / 1394 converter (6) for converting each other, an Internet environment (7), and a PC (8) (9).

The IP / 1394 converter 6 is a gateway.

Among the 1394 access nodes # 0 to # 4 (1 to 5), devices that can connect to the Internet include a PC, a Web TV, and an Internet phone.

The 1394 access nodes # 0 to # 4 (1 to 5) are provided with separate IP addresses.

FIG. 2 is a view showing an embodiment of an apparatus for controlling access to an Internet in a bus system according to the prior art. The gateway 10 converts and outputs 1394 packets and TCP / IP packets, and 1394 packets to the gateway 10. A 1394 access node 20 for connecting to the Internet according to the 1394 packet outputted from the gateway 10 or the 1394 access node 20 according to the TCP / IP packet outputted from the gateway 10. And a 1394 access node 20 connected to the Internet or the gateway 10 according to the Internet access, and a plurality of Internet access PCs 30 to 50 for outputting TCP / IP packets.

The 1394 access node 20 includes a browser 21, an application layer, a TCP / IP layer 22, a transaction layer 23, and a link layer 24. And a PHY layer 25.

The gateway 10 includes a data processing unit 10a for converting the TCP / IP packet into a 1394 packet and converting the 1394 packet into a TCP / IP packet.

FIG. 3 is a diagram illustrating the format of an Address Resolution Protocol (ARP) request / response packet used for Internet access in FIG. 2.

An apparatus and method for controlling an internet access in a general bus system configured as described above will be described in detail with reference to the accompanying drawings.

First, when the PC 8 of the Internet environment 7 attempts to access the 1394 serial bus system, the PC 8 is selected from 1394 of the 1394 access nodes # 0 to # 4 (1 to 5) of the 1394 serial bus system. Sends a TCP / IP packet to the IP address of access node # 2 (3).

The IP / 1394 converter 6 then converts it to a 1394 packet and transmits it to the 1394 access nodes # 0 to # 4 (1 to 5) through a 1394 serial bus.

Accordingly, each of the 1394 access nodes # 0 to # 4 (1 to 5) receives the signal converted into a 1394 packet from the IP / 1394 converter 6 through the 1394 serial bus, detects the IP_address, and then Compare with your IP address.

As a result of the comparison, the Internet connection between the 1394 access node # 2 (3) and the PC (8) corresponding to its IP address is established.

On the other hand, when attempting to access the Internet from the 1394 access node # 0 (1) to the PC 9, the node # 0 (1) uses the Internet communication tool to set the IP address of the PC 9 to 1394. Send it in a packet.

Then, the IP / 1394 converter 6 converts the 1394 packet transmitted from the 1394 access node # 0 (1) into a TCP / IP packet and then, via the Internet environment 7, the PC having the destination IP address. Transfer to (9).

Accordingly, the PC 9 makes an Internet connection with the 1394 access node # 0 (1) according to the TCP / IP packet transmitted through the Internet environment 7.

The above process will be described in detail with reference to FIGS. 2 and 3 as follows.

First, an ARP request / response packet as shown in FIG. 3 in order for a user to access the Internet with the Internet access PC 30 in the Internet environment using the browser 21 of the 1394 access node 20. If the ARP request packet including the target_IP_address is outputted, the TCP / IP layer 22 converts the packet into an IP packet and outputs the packet.

Here, the ARP request packet transmits an "ⓐ" area of the ARP request / response packet as shown in FIG. 3 in an unwritten state, a hardware_type area, a protocol_type area, Hardware_Address_Length (hw_addr_len) area, IP_Addr_len area, opcode area, sender_unique_ID area, sender_node_ID area Sender_unique_FIFO_hi and sender_unique_FIFO_lo areas, sender_max_rec area, sender link and pie layer speed areas , A reserved area, a sender_IP_address area, an unwritten "ⓐ" area, and a target_IP_address area.

The IP packet is then converted into a 1394 packet in the transaction layer 23 and the link layer 24 and then transmitted to the gateway 10 through the PHY layer 25.

Accordingly, the gateway 10 converts the transmitted 1394 packet into an IP packet corresponding thereto and transmits the converted 1394 packet to the Internet access PCs 30 to 50 of the Internet environment.

That is, the data processing unit 11 in the gateway 10 converts the 1394 packet into a corresponding IP packet and transmits the same to the Internet access PCs 30 to 50 of the Internet environment.

Then, each of the Internet access PCs 30 to 50 detects an ARP request packet including the target IP address as shown in FIG. 3 from the IP packet and compares it with its IP address.

As a result of the comparison, the Internet-connected PC 30 having the same IP address converts an ARP response packet having an IP_address in which an unwritten "ⓐ" area of an ARP request packet including a target IP address is converted into an IP packet. To print.

The "ⓐ" area includes a target_unique_ID area, a target_node_ID area, a target_unicast_FIFO_hi area, and a target_unicast_pipo_low area. and a target_unicast_FIFO_lo area, a target_max_rec area, a sender link and pie layer speed area, a reserved area, and a target_IP_address area.

Then, the gateway 10 converts the IP packet outputted from the Internet access PC 30 into a corresponding 1394 packet and outputs it to the 1394 access PC 20 through a 1394 serial bus cable.

Accordingly, the 1394 access PC 20 receives the 1394 packet through the 1394 serial bus cable, converts the packet into an IP packet corresponding thereto, and then detects the IP address included in the ARP response packet having the IP address, and then converts the IP address into its own IP. _ Compared with the address, the Internet connection is established with the Internet connection PC 30.

That is, the PHY layer 25 in the 1394 access PC 20 receives the 1394 packet through the 1394 serial bus cable and outputs the 1394 packet to the link layer 24 and the transaction layer 23.

The link layer 24 and transaction translator 23 then detects and outputs an ARP response packet having a target IP address from the 1394 packet.

Subsequently, the TCP / IP layer 22 compares the IP address of the target_IP_address included in the detected ARP response packet with its own IP_address to establish an Internet connection with the Internet connection PC 30.

In this state, the Internet access PC 30 requests a channel assignment to a cycle master (not shown) which is a root node in order to transmit isochronous data.

The cycle master, which is the root node, searches for the use of the requested channel and allocates the channel to the Internet access PC 30 if the channel is not in use.

Accordingly, the Internet access PC 30 notifies the corresponding channel_number to the 1394 access node 20 and transmits isochronous data.

In the data transmission method of the Internet access device according to the prior art, by connecting to the Internet in response to the transmission and reception of the ARP request / response packet (Internet request) to request the channel for transmitting isochronous data Since the isochronous data is transmitted after notifying the bus node access node that receives the channel_number and receives the channel_number, unnecessary traffic occurs and communication efficiency is degraded.

Also, in the related art, a channel is allocated by requesting a channel for transmitting isochronous data after connecting to the Internet according to transmission and reception of an ARP request / response packet when the Internet is connected. If not received, there is a problem in that isochronous data cannot be transmitted.

Accordingly, the present invention has been made to solve the above problems, the channel_number obtained from the bus system access node obtained the channel in order to transmit isochronous data when the Internet is connected to the ARP request packet ( After filling in the ARP request packet, the receiving PC can copy the channel_number to the ARP response packet and transmit it.The receiving side properly receives the ARP request / response packet. It is an object of the present invention to provide a data transmission method of an Internet access device that transmits isochronous data by channel number.

Another object of the present invention is to provide a data transmission method of an internet access apparatus corresponding to the above apparatus.

1 is a view showing a connection between a typical 1394 serial bus system and the Internet environment

2 is a view showing an embodiment of an internet access control apparatus in a bus system according to the prior art;

FIG. 3 is a diagram illustrating the format of an ARP (Address Resolution Protocol) request / response packet used for Internet access in FIG.

4 is a diagram illustrating a format of data applied to a data transmission method of an internet access apparatus according to the present invention.

5A and 5B are flowcharts illustrating an operation state of a transmitting and receiving side according to a data transmission method of an internet access apparatus according to the present invention.

Explanation of symbols for main parts of the drawings

10: gateway 20: 1394 access node

21: browser 22: TCP / IP layer

23: transaction layer 24: link layer

25: PHY layer 30-50: Internet access PC

A feature of the data transmission method of the Internet access device according to the present invention for achieving the above object is to transmit data after accessing the Internet using an Address Resolution Protocol (ARP) request / response packet. A data transmission method of an internet access device, comprising the steps of: writing a sander channel_number for transmitting isochronous data in the ARP request packet and transmitting an ARP response packet; When the packet is received, isochronous data is transmitted to a corresponding channel.

Another feature of the data transmission method of the Internet access device according to the present invention for achieving the above object is the step of searching for the transmission of isochronous data (isochronous data), and isochronous data of the search result (isochronous) requesting channel assignment, receiving a channel, transmitting the written channel_number by writing an address resolution protocol (ARP) request packet and transmitting the received channel_number to the target channel from a receiver. Receiving an ARP response packet filled with a tch_no region and detecting a channel_number, and detecting the detected target channel_number (tch_no) and the assigned sender channel_number (sch_no). Comparing and if the comparison result is the same, isochronous data (isochronous data) is transmitted to the corresponding channel.

Another feature of the data transmission method of the Internet access device according to the present invention for achieving the above object is, by receiving an ARP (Address Resolution Protocol) request packet from the sender to determine the presence of the channel_number. Searching, transmitting the ARP response packet by copying the searched channel_number if present and writing it in the target channel_number area, and isochronous data transmitted from the transmitter. receiving isochronous data).

Hereinafter, a preferred embodiment of a data transmission method of an internet access device according to the present invention will be described with reference to the accompanying drawings.

FIG. 4 is a diagram illustrating a format of data applied to a data transmission method of an internet access device according to the present invention. The reserved area of the ARP request packet of FIG. 3 described above is a reserved area of a predetermined bit. And a sender channel_number area (sch_no) of a predetermined bit for writing a channel_number for transmitting isochronous data, and the reserved area of the ARP response packet is a reserved bit. A target channel_number of a predetermined bit for transmitting isochronous data by copying the channel_number of the sender channel_number region (sch_no) according to the ARP request packet and writing a target channel_number according to the ARP request packet. It is divided into regions tch_no.

5A and 5B are flowcharts illustrating an operation state of a transmitting and receiving side according to a data transmission method of an internet access apparatus according to the present invention.

When described in detail with reference to the accompanying drawings, the data transmission method of the Internet access device according to the present invention.

Since the components of the apparatus applied to the present invention are the same as those of FIG. 2 described above, description thereof will be omitted.

First, when the 1394 access node 20 searches for transmission of isochronous data and transmits isochronous data, the 1394 access node 20 requests a channel assignment to an isochronous resource manager and then connects the channel. Assigned (S1, S2).

Thereafter, the 1394 access node 20 writes the allocated channel_number into the ARP request / response packet and transmits the received channel_number to the gateway 10 to access the Internet with the Internet access PC 30 (S3).

That is, the 1394 access node 20 transmits the allocated channel_number through the TCP / IP layer 22 as shown in FIG. 4 of the ARP request / response packet. After filling in the sender channel_number (sch_no) area of the included ARP request packet, convert the ARP request packet into 1394 packet through the transaction layer 23 and the link layer 24, and then convert the PHY layer 25 into It transmits to the gateway 10 in order to access the Internet and the PC 30 through the Internet.

Then, the gateway 10 converts the ARP request packet transmitted from the 1394 access node 20 into an IP packet corresponding thereto and transmits the converted ARP request packet to the Internet access PCs 30 to 50 of the Internet environment.

That is, the data processing unit 10a in the gateway 10 converts the ARP request packet transmitted from the 1394 access node 20 into an IP packet corresponding thereto and transmits the converted ARP request packet to the Internet access PCs 30 to 50 of the Internet environment.

Accordingly, the Internet access PC 30 receives the transmitted ARP request packet and searches for the existence of the channel_number (ST1, ST2).

If the channel_number is found as a result of the search, the Internet connection PC 30 copies the A_ response field by copying it and inputting the "ⓐ" area and the target channel_number (tch_no) of the ARP request packet in which the "ⓐ" area is not filled. Transmit to the gateway 10 (ST3).

Then, the gateway 10 converts the transmitted ARP response packet into a corresponding 1394 packet and transmits the 1394 access node 20.

Accordingly, the 1394 access node 20 receives the ARP response packet to which the transmitted target channel_number (tch_no) is written, detects the channel_number, and then detects the detected target channel_number and the assigned sender channel_number. Comparison is made (S4, S5).

That is, the 1394 access node 20 receives the ARP response packet to which the transmitted target channel_number (tch_no) is written through the PHY layer 25 and then links the link layer 24 and the transaction layer 23. After detecting the channel_number, the detected target channel_number is compared with the assigned sender channel_number.

If the comparison result is the same, the 1394 access node 20 transmits isochronous data to the Internet access PC 30 through the gateway 10 through the corresponding channel (S6).

That is, if the same channel_number as the sender channel_number is written in the target channel_number area as a result of the comparison, the 1394 access node 20 transmits isochronous data to the corresponding channel through the gateway 10 through an Internet access PC ( 30).

The Internet access PC 30 then receives isochronous data transmitted from the 1394 access node 20 via the gateway 1 (ST4).

As described above, in the data transmission method of the Internet access apparatus according to the present invention, in order to transmit isochronous data when the Internet is connected, the channel_number obtained from the bus system access node obtaining the channel is written and transmitted in an ARP request packet. In this case, the receiving Internet access PC copies the channel_number to the ARP response packet and transmits it. The receiving side receives the ARP request / response packet properly and transmits isochronous data to the specified channel_number. There is an effect that can be improved.

Claims (3)

In a data transmission method of an Internet access device that transmits data after accessing the Internet using an Address Resolution Protocol (ARP) request / response packet, Writing a sander channel_number for transmitting isochronous data in the ARP request packet and transmitting the same; Receiving an ARP response packet, if the same channel_number as the sander channel_number (sch_no) is written in the target channel_number region, transmitting isochronous data to the corresponding channel. Data transmission method of the Internet connection device. Retrieving whether to transmit isochronous data; Requesting channel allocation after receiving isochronous data to receive the channel; Writing the allocated channel_number in an address resolution protocol (ARP) request packet and transmitting the same; Receiving an ARP response packet filled with the target channel_number (tch_no) area from a receiver and detecting a channel_number; Comparing the detected target channel_number (tch_no) with the assigned sender channel_number (sch_no); And transmitting isochronous data to the corresponding channel if the comparison result is the same. Receiving an Address Resolution Protocol (ARP) request packet from a sender and searching for the presence of a channel_number; Copying the channel_number if the search result exists and writing it in the target channel_number area to transmit an ARP response packet; And receiving isochronous data transmitted from the transmitting side.