JPH03158030A - Signaling transmission system - Google Patents

Abstract

PURPOSE:To send plural kinds of signaling channels for each line efficiently by constituting a multi-frame including an envelope for signaling transmission. CONSTITUTION:First-6th line signalings are sequentially arranged one by one bit to 6 bits except the head F bit and the end S bit in 8-bit envelopes 11-14 in a format of a multi-frame constitution each comprising of 4 multi-frames MF1-MF4, and 4 kinds and 2 kinds of signaling channels 21-24 and 31-32 of each line are arranged sequentially to the multi-frames MF1-MF4 to form a signal format. One bit of signaling of each line is assigned to each envelope in the multi-frame constitution and the kind of the signaling is assigned to each frame, the bit number of the signaling channel per frame is reduced and the transmission efficiency is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a signaling transmission system, and particularly to a signaling transmission system when signaling on each line of a time division multiplex system occupies a plurality of signaling channels.

[Conventional technology]

Conventionally, in this type of signaling transmission system, the time series of the signaling channel of each line is shown in Figure 2 (a) and (
As illustrated in b), envelope multiplexing is performed for transmission. CCITT Recommendation G704 stipulates that the signaling channel per line should be configured with four types, A, B, C, and D, and the case where it should be configured with two types, A and B. is shown in FIG. 2(a), and the envelope format of the latter is shown in FIG. 2(b).

That is, FIG. 2(a) shows the 8-bit envelope 1
Each line and 4 bits, excluding the first framing (F) bit and the last status (S) bit, are
This shows a format in which M signaling channels are sequentially arranged and transmitted. The numbers of the signaling channels indicate the line numbers, and the alphabetic characters indicate the signaling type. For example, signaling channel 2 is the first line A and B.

It consists of four types of signaling, C and D. Also, Figure 2(b)
Similarly, 2 bits of each line are added to the 6 bits in envelope 1.
3 shows a format for sequentially arranging and transmitting different types of signaling channels. For example, signaling channel 3 consists of the first line A and 82 types of signaling.

[Problem that the invention attempts to solve]

In the conventional signaling transmission method described above, the data bits in the multiple signaling channel envelopes of each line are sequentially arranged, resulting in: (1) a decrease in transmission efficiency; and (2) a decrease in the number of signaling channels on each line. The drawback is that the number of bits used for signaling on each line in the envelope is different, making line design management complicated.

[Means to solve the problem]

The transmission method of the present invention is characterized in that line signaling channels each consisting of a plurality of bits are arranged in an envelope within each frame constituting a multiframe, with one bit per line, and transmitted within the multiframe.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIGS. 1(a) and 1(b) are signal format diagrams each showing an embodiment of the present invention.

In FIGS. 1(a) and (b), the leading F bit and the trailing S bit are excluded from the 8-bit envelopes 11 to 14 in the format of the multi-frame structure consisting of four multi-frames MFI to MF4, respectively. The signaling of the 1st to 6th lines is sequentially arranged in 6 bits, 1 bit at a time, and the 4 types and 2 types of signaling channels 21 to 24 and 31 to 32 of each line are sequentially arranged in multiframes MFI to MF4. to form the signal format.

In either case, the appearance timings of the envelopes 111 to 14 are aligned for each multiframe MFI to MF4 to prevent the timing processing of the signaling channel for each line from becoming complicated. Also, envelope 1
A frame pattern is given to each status bit 81 to S4 of 1 to 14 to facilitate identification of the type of each signaling channel.

In this way, by configuring a multi-frame including envelopes for signaling channels, assigning 1 bit of signaling for each line to each envelope, and assigning a signaling type to each frame, the number of signaling channel bits per frame can be reduced. Not only can transmission efficiency be improved, but line management is also facilitated.

〔Effect of the invention〕

As explained above, according to the present invention, by configuring a multi-frame including an envelope for signaling transmission, multiple types of signaling channels of each line can be efficiently transmitted using one bit in the envelope per line. This has the effect of facilitating transmission and line management.

[Brief explanation of the drawing]

Figures 1 (a) and (b) are signal format diagrams of an embodiment of the present invention, and Figures 2 (a) and (b) are signal format diagrams of a conventional signaling transmission system. 1.11-14.・・Envelope, 2, 3.21~2
4.31-32...Signaling channel.

Claims (1)

[Claims] 1. Line signaling channels each consisting of a plurality of bits are arranged in an envelope within each frame constituting a multiframe, with one bit per line, and transmitted within the multiframe. Signaling transmission method. 2. The signaling transmission system according to claim 1, wherein the appearance timings of the envelopes in each frame of the multiframe are all aligned. 3. The signaling transmission system according to claim 1, wherein the status bits of the envelope within the multiframe have a predetermined frame pattern.