JPH0477154A - Parallel data transmission system - Google Patents

Abstract

PURPOSE:To perform data transmission at almost double of 64kbps transmission speed of a B channel from the subscriber of basic interface connection by parallely utilizing two B channels of an ISDN network, dividing a data block to parallely transmit it to the identical opposite destination. CONSTITUTION:A communication controller 4, connected by a host computer 2 and a transmission line 41, receives a packet parallely transmitted by a channel B1 and a channel B2, restores to the original state, and transmits through the transmission line 41 to the host computer 2. The packet received simultaneously on a transmission side is not simultaneously received on a reception side. So, the edition of the packet received at non-synchronization is performed according to a number code to transmit to the host computer 2 through the transmission line 41 in the state when the reception packet is completed. Thus, the original data block can be restored, and the data transmission can be performed at almost double transmission speed of 64kbps.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a parallel data transmission system, and particularly to a parallel data transmission system using two B channels of a basic interface of a service integrated digital communication network [Prior Art] Service The basic interface connection in the integrated digital communication network (hereinafter referred to as the 15DN network) is a service that allows communication to be performed simultaneously using two B channels (G4kbps) and one D channel (1llikbps) on one set of subscriber lines. Since each B channel is treated as an independent transmission line, switching connection processing is performed,
It is possible to configure communication lines with different parties at the same time.

Therefore, when attempting to transmit data from one subscriber's device connected to the basic interface to another subscriber's device via the 15DN network, conventionally the communication line with the other party was configured using one B channel. Data transmission is in progress.

[Problem to be solved by the invention]

In the data transmission method using the conventional I5DN network described above,
Even when two B channels provided by the same subscriber line are both unused and idle, only one B channel is used to transmit data, so the transmission rate is 64
There is a problem that it cannot be faster than kbps.

The object of the present invention is to enable subscribers of basic interface connections to
An object of the present invention is to provide a parallel data transmission method that allows higher-speed data transmission via a 5DN network.

[Means to solve the problem]

In the parallel data transmission system of the present invention, when data is transferred from a subscriber connected to a basic interface to another subscriber in an integrated service digital communication network, the data block to be transmitted is sent to a predetermined length on the transmitting side. Divide the packet into multiple packets and add an identification code to each packet to indicate the order.
The packets are divided into channels and transmitted in parallel to the same subscriber, and on the receiving side, the packets with the identification code received on the two B channels are respectively stored in a reception buffer, and only the data part of the packet with the identification code is sent to the same subscriber. The data blocks are rearranged according to the order of the data blocks to restore the original data blocks.

〔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 to line termination devices 5 and 6 that provide basic interface connections for the I5DN network 7 via communication control devices 3 and 4, respectively. 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 84 kb, which is the transmission speed of the B channel.
The communication control device 3 uses a transfer line 31 with a transmission speed faster than PS.
packets Pi, P2 . It is divided into P3 . . . and stored in the transmission buffer 32. Subsequently, the numbering distribution circuit 33 distributes the packet P, (n
= L 2, 3...) are read out in the order in which they are stored, and a number code St+S2. S3...
packets s, +p, with identification codes and number codes are assigned alternately to the B□ channel and the B2 channel, and the communication speed of the B channel is 8 4.
The data is converted to kbps and sent to the transmitting circuits 34 and 35. The transmitting circuits 34 and 35 receive this identification coded packet S
P1 is converted into an intermittent signal of 192 kbps, which is the transmission speed of the line of the basic interface, and transmitted in time-division time slots assigned to the B□ channel and the B2 channel. As a result, data blocks are transmitted in parallel using the two B channels of the basic interface simultaneously.

If the flow of data on the B channel on the transmitting side is shown in chronological order, as shown in Figure 2, the first packet St +P□
and bucket) S2 + P2 are sent simultaneously, followed by bucket) S3 + P3 and packet S4 + P4 are sent simultaneously. Thereafter, odd-numbered packets and even-numbered packets are transmitted in parallel in the same manner.

FIG. 3 is a block diagram illustrating the configuration and operation of the receiving side communication control device 4 shown in FIG. 1. The communication control device 4 is connected to the host computer 2 via a transfer line 41, receives packets sent in parallel on the BI channel yB2 channel, restores them to their original state, and sends them to the host computer 2 via the transfer line 41. Forward.

The receiving circuits 42 and 43 respectively have channels B and B2.
The identification coded packet Sn1Pi transmitted through the channel is received and stored in the reception buffers 44 and 45.

Next, number code S from each receiving buffer 44°45,
, the buckets with identification codes) S and +Pn are read out in the order of , the number code Sn is deleted, and only the data part (P, , ) is stored in the editing buffer 46.

Since the two B channels of the 15DN network are connected independently 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 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. As described above, the original data block can be restored, and data transmission can be performed at a transmission speed approximately twice that of 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 time may be added as an identification code. Further, although the packets are transmitted alternately to the two B channels, it is not necessary to transmit the packets alternately. Furthermore, the case where data is transmitted from a subscriber connected to a basic interface of the 15DN network to a subscriber connected to another basic interface has been explained.
Multiple access (2
It can also be applied to subscribers of the 3B1D) system.

〔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 two B channels of the N network in parallel, the transmission speed of the B channel from a subscriber connected to the basic interface is 64%.
This has the effect of allowing data transmission to be performed at approximately twice the speed of kbps.

[Brief explanation of drawings]

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. FIG. 2 is a block diagram illustrating the configuration and operation of the receiving side communication control device shown in the figure. 1.2...Host computer, 3,4...
... Communication control device, 5, 6 ... Line termination device, 7 ... ISDN network.

Claims (1)

[Claims] When transferring data from a subscriber connected to a basic interface to another subscriber in an integrated service digital communication network, the data block to be transmitted is divided into multiple packets of a predetermined length on the sending side, Packets with identification codes added to each packet to indicate the order are divided into two B channels and transmitted in parallel to the same subscriber, and the receiving side receives the packets with identification codes received on the two B channels, respectively. 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.