JPH0477155A - Parallel data transmission system - Google Patents

Abstract

PURPOSE:To effectively make use of the transmission capacity of lines to data transmission by parallely utilizing plural B channels of an ISDN network and dividing a data block to be parallely transmitted to the identical opposite destination. CONSTITUTION:A data block 11 to be transmitted from a host computer 1 is transferred to a communication controller 3 by a transmission line 31 at the transmission speed faster than 64kbps of the transmission speed of the B channel, divided into packets P1, P2, P3... which is the length set in advance in order of input, and stored in a transmission buffer 32. Continuously, a numbering distribution circuit 33 reads out a packet Pn (n=1,2,3...) stored in the transmission buffer 32 in order of storage by (m) ((m) is 23>=m>=2, the number of B channels connected for parallel transmission among transmission-reception subscribers), adds number codes S1, S2, S3... indicating the order to parallely transmit to transmission circuits 34 to 35 after converted to 64kbps of the communication speed of the B channel.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a parallel data transmission system, and in particular to a system for transmitting data using a plurality of B channels between subscribers of a primary group multiple access interface connection of an integrated service digital communication network. Parallel data transmission method for transmission [Prior art] In the integrated service digital communication network (hereinafter referred to as ISDN network), the -order group interface connection uses 23 B channels (64 kbps) and 1
A multiple access system that allows simultaneous communication using 3 B channels (64 kbps) and 3 H channels. channel (384kbps) and one D channel (64kb
ps) or one H! l channel (1,536kbps
). Among these, each B channel of the multiple access method is characterized in that switching connection processing is performed on each B channel as one independent transmission line, so that communication can be performed with a large number of different parties at the same time.

Therefore, when data is to be transmitted from one device of a subscriber with a first-order multiple access interface connection to a device of another subscriber with a first-order multiple access interface connection via an ISDN network, conventionally It was common practice to configure a communication line with the other party using two B channels for data transmission.

[Problem to be solved by the invention]

In the above-mentioned data transmission method using the normal ISDN network, data transmission between subscribers of the -order group multiple access interface connection is performed using only one B channel, so the transmission speed cannot be faster than 64 kbps. The problem is that it does not.

An object of the present invention is to provide a parallel data transmission system that allows high-speed data transmission between subscribers of a primary group multiple access interface connection of an ISDN network.

[Means to solve the problem]

In the parallel data transmission system of the present invention, when data is transferred between subscribers of a primary group multiple access interface connection of an integrated service digital communication network, data blocks to be transmitted are divided into blocks of predetermined length on the sending side. The packet is divided into multiple packets, each packet has an identification code added to indicate the order, and the packet is divided into multiple B channels connected between both subscribers and transmitted in parallel. The packets with identification codes received by the receiver are respectively stored in a reception buffer, and only the data portions of the packets with identification codes are rearranged in accordance with the order of the identification codes to restore the original data block.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the system configuration of an embodiment of the present invention. The host computers 1 and 2 are connected via communication control devices 3 and 4, respectively, to line termination devices 5 and 6 which provide a primary group multiple access interface connection of the ISDN network 7. Here, a description will be given assuming that a data block is transmitted from the host computer 1 to the host computer 2.

FIG. 2 is a block diagram illustrating the configuration and operation of the transmission-side communication control device 3 shown in FIG. 1.

The data block 11 to be transmitted from the host computer 1 is 64 kb, which is the transmission speed of the B channel.
Communication control bag w3 with transfer line 31 with faster transmission speed than PS
packets p, , p2 . p3 . . . and stored in the transmission buffer 32. Subsequently, the numbering distribution circuit 33 distributes the packet P, (n
= 1.2.3...) are stored in m (m is the number of B channels connected for parallel transmission between transmitting and receiving users, 23
≧m≧2) are read out one by one, and number codes S, , S2 . S.

. . . is added, and a packet s, +plI with an identification code and a number code is sent to the transmission circuits 34 to 35 of m B channels connected to the other subscriber at the communication speed of the B channel. It is converted to 64 kbps and transmitted in parallel. The transmitting circuits 34 to 35 convert these identification coded packets Si+Pn into burst signals of 1,544 Mbps, which is the transmission speed of the primary group interface line, and transmit them in the time-division time slots assigned to each B channel. do. Here, the value of m and the B to send
The channel number of the channel is transmitted to the numbering distribution circuit 33 from the D channel control circuit 36 that controls the D channel that transmits signal information. As a result, data blocks are transmitted in parallel using m B channels simultaneously.

To show the flow of B channel data on the transmitting side in chronological order, as shown in Figure 2, when transmitting sequentially on m B channels from B, channel to B, channel,
B! The channel has baguette S engineering + p1. s=+□+P
s++1 r 32m+□+P2. +1・−・・・−
..., and packet S-+ is sent to channel B.
P @ , S @ +1 + P 881 , 3211
y, +p2=y 12. .

They are transmitted in parallel in the order of...

FIG. 3 is a block diagram illustrating the configuration and operation of the receiving side communication control wave W4 shown in FIG. 1. The communication control device 4 is connected to the host computer 2 through a transfer line 41, and receives packets sent in parallel on channels B1 to B, restores them to their original state, and transfers them to the host computer via the transfer line 41. Transfer to 2.

The receiving circuits 42 to 43 receive identification coded packets s and +p transmitted on channels B1 to B, respectively.
, is received and stored in the reception buffers 44-45. Next, the packets Sfi±Pn with identification codes are read out from each reception buffer 44 to 45 in the order of the number code Syu, the number code is deleted, and only the data part (P, ) is stored in the editing buffer 46. Although not shown in the figure, the number m of B channels to be stored in the editing buffer 46 and the channel number are obtained from the control circuit of the D channel that transmits signal information.

Since each B channel of the ISDN network is independently connected and the routes are not necessarily the same, packets transmitted at the same time on the transmitting side are not received at the same time on the receiving side. Therefore, the asynchronously received packets and γ-ts are edited according to the number code, and the received packets are transferred to the host computer 2 via the transfer line 41 in a complete state. With the above, the original data block can be restored, and data transmission can be performed at a transmission speed approximately m times as high as 64 kbps.

In the above explanation, after the data block is divided into packets on the sending side, a number code is added as an identification code. However, if the order of the packets can be identified, for example, the number code can be used instead of the number code. The identification code may be the time when the Also, packets B□~B1
Transmit using m consecutive B channels, and the receiving side also transmits B□
~B.

In the explanation above, it is assumed that packets are received on m consecutive corresponding B channels, but the channels do not have to be consecutive, and the transmission order between each B channel of packets may be arbitrary. The connection is also not particularly limited. In other words, if the transmitting side and the receiving side are connected by m B channels, and it is known which B channel is used for parallel transmission on each side, there is no need for information about which channel is connected to which channel. .

〔Effect of the invention〕

As explained in detail above, according to the present invention, I SD
Since data blocks are divided and transferred in parallel to the same destination using multiple B channels of the N network in parallel, the transmission speed from subscribers connected to the -order group multiple access interface is several times higher than the transmission speed of the B channel. This has the effect of making it possible to effectively utilize the transmission capacity of the line for data transmission.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the system configuration of an embodiment of the present invention, FIG. 2 is a block diagram explaining the configuration and operation of the transmission side communication control device shown in FIG. 1, and FIG. 3 is the same as the one shown in FIG. FIG. 2 is a block diagram illustrating the configuration and operation of the receiving side communication control device shown in FIG. 1.2...Host computer, 3.4...
...Communication f@II control device, 5, 6... Line termination device, 7-...15DN network.

Claims (1)

[Claims] When transferring data between subscribers of a primary group multiple access interface connection of an integrated service digital communication network, the data block to be sent is divided into multiple packets of a predetermined length on the sending side, and each packet is A packet with an identification code to which an identification code indicating the order has been added is divided into multiple B channels connected between both subscribers and transmitted in parallel, and on the receiving side, each of the packets with an identification code received on the multiple B channels is transmitted in parallel. A parallel data transmission system characterized in that the original data block is restored by storing the data in a reception buffer and rearranging only the data portion of the packet with the identification code according to the order of the identification code.