JPH0683174B2 - Signaling transfer method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention accommodates a transmission line in which a plurality of lines are multiplexed and edits the line for the purpose of efficiently operating the transmission line and the line. The present invention relates to an apparatus configuration method, and more particularly, to an in-apparatus transfer method of signaling which is a control signal for each line.

[Conventional technology]

Signaling is a signal that has a much smaller amount of information than an information signal, but since there are many types, it is multiplexed on a specific time slot identified by the multiframe signal of that transmission path. .

In the conventional line editing apparatus, a method of separating each type of signaling into a separate line has been used in the transmission path receiving unit because the configuration is simple.

An example of this conventional signaling transfer method will be described with reference to FIG.

In the figure, reference numeral 1 is a line editing device, and this line editing device 1
Is a transmission line receiving unit 3 to which a transmission line input signal 7 is supplied, a line setting unit 2 that receives the output of the transmission line receiving unit 3 as an input, and a transmission line transmitting unit connected to the output side of the line setting unit 2.
It is composed of 4a, 4b, 4c.

Then, the signaling separation circuit 4 provided in the transmission line receiving unit 3 separates, for each type of signaling included in each line, all types of signaling included in the multiplexed transmission line input signal 7. . The information signal which is the output of the transmission path receiver 3 and the signaling separated by type are connected by the line setting unit 2 by the same route for each line, and are provided in the transmission path transmitters 5a, 5b, 5c, respectively. It is connected to the signaling insertion circuits 6a, 6b, 6c. Then, this signaling insertion circuit 6a, 6b, 6c, for each line output as the output signal 8a, 8b, 8c of that transmission line, respectively, for each line in synchronization with the multi-frame signal determined for each transmission line All types of signaling are re-multiplexed and output with the information signal.

In FIG. 2, 9a, 9b and 9c indicate information paths, and 12a, 12b and 12c indicate dedicated signaling paths.

FIG. 3 is a block diagram showing another example of a signaling transfer method as a solution to the conventional problem, and shows a method having a multi-frame circuit common to the entire apparatus.

In FIG. 3, the same parts as those in FIG. 2 are designated by the same reference numerals and the description thereof will be omitted. Reference numerals 13a, 13b and 13c are multiplexed signaling paths, and 14 is a multi-frame generation circuit.

In FIG. 3, the output of the multi-frame generating circuit 14 is distributed as a common multi-frame phase to all the transmission path receiving units 3 and the transmission path transmitting units 5a, 5b, 5c in the apparatus.
Then, the signaling separation circuit 4 separates the signaling from the transmission path input signal 7 based on this multi-frame, writes this in the variable buffer memory (not shown), and reads it according to the multi-frame to the line setting section 2. Send out.

Here, the difference from the signaling transfer method shown in FIG. 2 is that the output phases of all the signaling separation circuits in the device match, so there is no need to use a separate line for each type of signaling, It is a good thing to remain. Then, this signaling output is transmitted in the line setting unit 2 by the multiplex signaling paths 13a, 13b, 13c in the same route as the information signal for each line in the transmission line transmitting units 5a, 5b,
5c are connected respectively. Also the signaling insertion circuit
6a, 6b, 6c inserts multiplexed signaling into the information signal based on the common multi-frame phase, and outputs it as output signals 8a, 8b, 8c to the transmission path.

[Problems to be solved by the invention]

In the signaling transfer method shown in FIG. 2 described above, since the signaling is separated into different lines in the transmission path receiving unit 3 for each type, the capacity of the line setting unit 2 increases when there are many types of signaling, and the cost and There was a problem that the hardware became large.

Further, the signaling transfer system shown in FIG. 3 described above is better in hardware than the signaling transfer system shown in FIG. 2, but the signaling included in the transmission line input signal 7 is changed to the multi-frame phase of the transmission line. There is a problem in the delay characteristic because it is adjusted to the multi-frame phase in the device, which is completely independent of. That is, the number of types of signaling required varies depending on the line, and although the required multi-frame period is different, the period of the multi-frame generation circuit 14 must be set to the maximum possible period. I don't get it. Therefore, even for a line that may have a short multi-frame period, the maximum delay will be the multi-frame period of the multi-frame generation circuit 14.

[Means for solving problems]

The signaling transfer method of the present invention separates and outputs the information signal corresponding to each line from the transmission line input signal based on the multi-frame phase extracted from the transmission line input signal, and outputs all the information signals corresponding to each line from the transmission line input signal. And outputs the multi-frame signal indicating the multi-frame phase while separating and outputting the same type of signaling as the time-division multiplexed state, and the preset transmission direction for each line. An information path connecting the transmission path receiver and the transmission path transmitter corresponding to each line, based on the connection information indicating another, a line setting unit that sets the multiplex signaling path and the multiframe signal path by the same route, respectively, Information input via the information path is based on the multi-frame signal input via the multi-frame signal path. A transmission path transmission unit that inserts and transmits a multiplexed signaling signal into a signal, and a state in which the transmission path reception unit time-division-multiplexes all types of signaling corresponding to each line from the transmission path input signal The multiplexed signaling and multi-frame signals that have been separated and output as they are, the transmission path transmission unit corresponding to each line through the multiplexed signaling path and the multi-frame signal path set by the line setting unit on the same route as the information path , And the transmission line transmitter inserts the multiplexed signaling into the corresponding information signal based on the multi-frame signal.

[Action]

In the present invention, the multiframe phase of the input signal is set for each line together with the information signal and the multiplexed signaling.

〔Example〕

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

FIG. 1 is a block diagram showing an embodiment of a signaling transfer system according to the present invention.

In FIG. 1, the same reference numerals as those in FIGS. 2 and 3 indicate the corresponding parts, and 4 is the signaling for classifying the signaling of each line from the transmission line input signal 7 as multiplexed and outputting it simultaneously with the multi-frame signal. The signaling separation circuit 4 is a separation circuit and is included in the transmission path reception unit 3. Further, 6a, 6b, 6c is a signaling insertion circuit that inserts the multiplexed signaling into the information paths 9a, 9b, 9c by a multi-frame signal as an output signal, and the signaling insertion circuits 6a, 6b, 6c respectively transmit. Road transmitter 5a, 5b,
Included in 5c. Then, in the line setting unit 2, the information paths 9a to 9c, the multiplexed signaling paths 10a to 10c, and the multi-frame paths 11a to 1 which are set to the same route for each line.
Has 1c.

The operation of the embodiment shown in FIG. 1 will be described below.

First, the signaling separation circuit 4 included in the transmission line receiving unit 3 separates the signaling from the transmission line input signal 7 for all the lines included in this input signal, and the line setting unit with all types of signaling multiplexed. Send to 2. Further, a multi-frame signal for identifying the multiplexed phase is generated and similarly supplied to the line setting unit 2.

Generally, each information time slot of the transmission line input signal is
Information bits and signaling bits for storing information and signaling are fixedly provided. In this case, the signaling bits of each time slot with predetermined invalid data inserted are output as an information signal, and the information of the input signal is also output. Bits are used to reduce the bit rate of signaling bits and output as multiplexed signaling. Therefore, the information signal and the multiplex signaling do not have to be delayed by buffering as in the conventional case, and the multiframe signal showing the phase identification in the multiplex state in which the same multiframe as the transmission path input signal 7 is formed. And is output to the line setting unit 2 in synchronization with.

Next, the line setting unit 2 receives the information signal from the transmission line receiving unit 3, the multiplexed signaling, and the multi-frame signal.
The signals of the types are connected by the same route, and are connected to the respective defined transmission path transmission units 5a, 5b, 5c. In addition, in this type of line editing device, route mapping information indicating connection instructions is preset according to traffic of each relay line by management and maintenance work, and each channel of an input signal has this route mapping information. According to the time division switch, the time slots are exchanged, and the time slot switches are connected to the corresponding transmission path sending units 5a, 5b, 5c.

Then, the signaling insertion circuits 6a, 6b, 6c included in the transmission path transmitters 5a, 5b, 5c, respectively, are
11a, 11b, based on the multi-frame signal from 11c, the multiplex signaling path 10a, 10b, the information path 9a, 9b, in each phase of the transmission line transmission unit 4a, 4b, 4c from 10c,
It is inserted in the information signal from 9c. That is, the insertion timing is extracted from the information signal output from the signaling separation circuit 4 and the multiframe signal indicating the multiplexing phase of the multiplexed signaling, and based on this, the corresponding multiplexing is performed for the signaling bit of the information signal. Signaling is inserted, and output signals 8a, 8b, and 8c are sent to the transmission path, respectively.

〔The invention's effect〕

As described above, according to the present invention, by setting the multi-frame phase of the input signal for each line together with the information signal and the multiplexed signaling, the load of the hardware is reduced and the signal transfer with good delay characteristics is achieved. Therefore, the practical effect is extremely large.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a signaling transfer system according to the present invention, and FIGS. 2 and 3 are configuration diagrams showing examples of a conventional signaling transfer system and another signaling transfer system proposal, respectively. 1 ... line editing device, 2 ... line setting part, 3 ... transmission line receiving part, 4 ... signaling separation circuit, 5a-5c ... transmission line transmitting part, 6a-6c ... signaling insertion circuit, 7 ... ... Transmission path input signal, 9a to 9c ... information path, 10a to 10c ... multiplex signaling signal path, 11a to 11c ... multiframe path.

Claims (1)

[Claims] 1. A transmission line in which a plurality of lines are multiplexed is accommodated,
A line editing device that distributes information signals and signaling multiplexed based on a multi-frame phase to a transmission line input signal supplied from the transmission line according to a predetermined transmission direction in each line unit, the transmission line input signal Based on the multi-frame phase extracted from, the information signal corresponding to each line is separated and output from the transmission line input signal, and all types of the signaling corresponding to each line are time-divided from the transmission line input signal. A transmission path receiver that outputs the multi-frame signal indicating the multi-frame phase while separating and outputting the multiplexed signal in the multiplexed state, and preset connection information indicating the transmission direction for each line. Based on the above, an information path and a multiplexing system for connecting the transmission path reception section and the transmission path transmission section corresponding to each of the lines. A line setting unit that sets a nulling path and a multi-frame signal path by the same route, respectively, based on the multi-frame signal input through the multi-frame signal path, to the information signal input through the information path, A plurality of transmission line transmission units for inserting and transmitting the multiplexed signaling input via the multiplexed signaling path, wherein the transmission line reception unit corresponds to each of the lines from the transmission line input signal. Multiplexed signaling in which all types of the signaling are separated and output in a time division multiplexed state, and the multiplex signaling in which the multiframe signal is set in the same route as the information path by the line setting unit. Each of the transmissions corresponding to each of the lines through the path and the multi-frame signal path. Replace connected to road transmission unit, a signaling transfer method is characterized in that above to insert into said information signal to said multiplexing the signaling based on the multi-frame signal by each transmission path transmitting unit corresponding.