JPH03240334A - Line concentration system in time division multiplex - Google Patents

Abstract

PURPOSE:To vary the line concentration ratio of a multiplex or decoding circuit by connecting a data highway in a wired-or form, connecting it to an input line of a multiplex circuit and distributing a signal from a decoding circuit in parallel with an outgoing data highway. CONSTITUTION:A line adaptor section 10-i-j converts a signal received by a terminal equipment into a PAM or a PCM signal and sends to a data highway 20-i by using one time slot to the terminal equipment. Moreover, the signal is sent to a connected terminal equipment, the signal of a time slot corresponding to the equipment sent through a data highway 30-i is converted into original information and sent to the terminal equipment. A multiplex circuit 40 multiplexes the transmission signal of an incoming highway 20-i in time division multiplex and a decoding circuit decodes and distributes a signal subject to time division and outputs the result from each output line. The incoming highway 20-i is in wired-or connection and the outgoing highway 30-i is connected in parallel with an output of the decoding circuit before the connection of the line adaptor section 10-i-j and the multiplex circuit 40. Through the constitution above, the highway 20-i whose line concentration ratio is m:1 is used to realize line concentration ratio of 2m:1 or the like.

Description

[Detailed Description of the Invention] [Summary] When connecting a data highway that connects a plurality of line corresponding units accommodating lines and a time-division type line multiplexing unit to a multiplexing circuit or a decoding circuit of the line multiplexing unit. Concerning line concentration methods in division multiplexing.

The purpose is to be able to change the line concentration ratio for the input line of the multiplexing circuit or the output line of the decoding circuit.

The configuration is such that a plurality of data highways are grouped in parallel and connected to the input line of the multiplexing circuit, and connected to the output line of the decoding circuit to increase the line concentration ratio.

(Industrial Application Field) A data highway that connects multiple line support units that accommodate lines and a time-division line multiplex unit.

The present invention relates to a line concentration system in time division multiplexing connected to a multiplexing circuit or a decoding circuit of a line multiplexing unit.

[Conventional technology]

FIG. 4 shows a configuration diagram of the hardware for boat fishing. In the figure, 10-1 is a line handling unit, 20-i is an uplink data highway, 30-i is a downlink data highway, 60 is a line multiplexing unit, and 70 is a line switching unit.

80 represents a call processing unit, and 90 represents a call processor.

When information is sent from a terminal connected to the line correspondence section 10-1, the two-line correspondence section 10-i converts the information into a PCM signal or a PAM signal and guides it to the nine-line multiplication section 60, The line multiplexing section 60 multiplexes the signals sent from the respective line corresponding sections 10-i using a time division multiplexing method.
The line switching unit 70 executes the switching process of the multiplexed signal according to the command from the call processing unit 80.

Figure 5 shows a conventional example of the line concentration system.
O-it 40-i, 50.60 correspond to FIG. It represents a decoding circuit that decodes and distributes a corresponding signal to the data highway 30-1.

The uplink data highway 20-1 and the downlink data highway 30-1 each include one or more line support units 1O-
i-1 to 1O-i-n are connected to the input line of the multiplexing circuit 40 in the line multiplexing section 60 and the output line of the decoding circuit 50.

The line corresponding section 1O-i-j is 5. The line corresponding section 1O-i-
The signal sent from the terminal device connected to j,
The signals are converted into PAM signals or PCM signals and transmitted to the uplink data highway 20-1 using one time slot for one transmitting terminal device.

Conversely, when the data is transmitted to a terminal device (not shown) connected to the 9-line support section 1O-i-j, the time slot corresponding to the terminal device transmitted by the downlink data highway 30-1 is Converts the signal into the original information and transmits it to the terminal device.

For example, if the number of time slots in the frame information on the output line of the multiplexing circuit 40 and the input line of the decoding circuit 50 is 32, and the upstream data highway 20-1 and the downstream data highway 30-i each have 4 lines. Then, if distributed evenly, each data highway 2
The number of time slots for 0-1 and 30-1 is eight.

Therefore, for example, if each line corresponding section 1O-i-j uses two time slots, the data highway 20-i and 30-1 is prepared.

[Problems to be Solved by the Invention] According to the line concentration method described above, 1. For example, if an attempt is made to double the line concentration ratio in the above example, 8 line handling units 1O-i-j
is connected to the line multiplexing unit 60, and the line multiplexing unit 60
It is necessary to prepare one with improved functionality.

SUMMARY OF THE INVENTION An object of the present invention is to enable changing the line concentration ratio for input lines of a multiplexing circuit or output lines of a decoding circuit.

(Means for solving problems) FIG. 1 shows a diagram of the principle of the present invention.

In the figure, 1O-i-j is a line support section, 20-1 is an uplink data highway, 30-i is a downlink data highway, and 40
50 is a multiplexing circuit, and 50 is a decoding circuit.

60 indicates a line multiplexing section.

When a signal is sent from a terminal device (not shown), the line corresponding section 1O-4-j converts the signal into a PAM signal or a PCM signal. It is transmitted to the data highway 20-1 using time slots.

When the information is transmitted to a connected terminal device, the data highway 30-i converts the signal of the time slot corresponding to the device into the original information and transmits it to the terminal device.

The multiplexing circuit 40 multiplexes signals transmitted from the uplink data highway 20-i using a time division multiplexing method.

The decoding circuit 50 decodes and distributes the two-hour signal, and outputs it from each output line.

Uplink data highway 20-1 has 9 line support section 1O-i
-j and the multiplexing circuit 40 are connected, and the multiplexing circuit 40
Before connecting to multiple uplink data highways 20-1
is wired or connected.

The downlink data highway 30-1 connects the decoding circuit 50 and the line correspondence section 1O-i-j.

A plurality of downlink data highways 30-i are connected in parallel to the output line of the decoding circuit 50.

[Effect]

For example, a plurality of data highways 20-1 and 30-1 are connected in parallel at the input line of the multiplexing circuit 40 and the output line of the decoding circuit 50.

Using the data highway 20-1 with a line concentration ratio of m:1, a line concentration ratio of 2 m:1 or the like can be realized.

〔Example〕

FIG. 2 shows an embodiment of the invention.

In the figure, 20-it 3O-it 40.50.6-
15 corresponds to FIG. 1, and 10-i is a line correspondence section.

11-1 is a sampling section, 12-i is a buffer, 13-2 is a demodulating section, and 14-i is a line processor.

80 represents a call processing unit, and 90 represents a call processor.

When information such as voice and data is sent from a terminal device (not shown) connected to the line handling section 10-1, the sampling section 11-i converts the information into a PCM signal etc. and buffers it. 12-i.

The line processor 14-1 sends out the stored PCM signals and the like to the line multiplexing unit 60 in a time slot instructed by the call processing unit 80.

Conversely, when a signal is sent to the terminal device, the line processor 14-i notifies the demodulator 13-1 of the time slot instructed by the call processor 80, and the demodulator 13-1 The signal of the time slot is converted into original information and transmitted to the terminal device.

The line multiplexing section 60 functions as a multiplexing circuit 40 and a decoding circuit 50. The multiplexing circuit 40 time-division multiplexes the signals from the input lines connected to the data highway 20-1 and sends them out.The 1 decoding circuit 50 decodes the incoming signals and distributes them to the corresponding output lines for transmission. do.

The call processing section 80 has a call processor 90.

The time slots used by each line correspondence section 10-1 are managed to prevent a plurality of line correspondence sections 10-1 from using the same time slot.

FIG. 3 shows a frame configuration diagram. FIG. 3(a) shows the frame configuration of the data highway 20-1, FIG. 3(b) shows the frame configuration of the data highway 20-2, and FIG. 3(C)
represents the frame structure of the multiplex circuit 400 Å line of force to which data highways 20-1 and 20-2 are connected. The value of time slot C4 is the logical sum of the value of time slot a and the time slot biO value. value.

Time slot at in line corresponding section to-1, time slot a in line corresponding section 10-2, 9 line corresponding section 10-3
The call processing unit 80 issues an instruction to allocate the time slot bt to the time slot b31 line support unit 10-4, and calculates the logical sum of the value of the time slot a1 and the value of the time slot b1 as the value of the time slot C1. There is.

When the line handling units 10-1 and 10-3 communicate at the same time, the call processing unit 80 uses a time slot.
The times at which the values of a+ and s are sent are staggered so that they are used alternately, so that the same time slot is not used at the same time.

Needless to say, the possibility of simultaneous communication occurring is generally small and will not have a substantial negative effect on the award of two communication items.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to change the line concentration ratio for the input line of the multiplexing circuit or the output line of the decoding circuit.

[Brief explanation of drawings]

Figure 1 is a principle diagram of the present invention, Figure 2 is an embodiment of the present invention, Figure 3 is a frame configuration diagram, Figure 4 is a general hardware configuration diagram, and Figure 5 is a conventional example of a line concentration system. shows. In the figure, 1O-i-j represents a line corresponding unit, 20-i represents an up highway, 30-4 represents a down highway, 40 represents a multiplexing circuit, 50 represents a decoding circuit, and 60 represents a line multiplexing unit.

Claims (1)

[Claims] A multiplexing circuit (40-i-j) that multiplexes a plurality of line corresponding units (10-i-j) accommodating lines via a plurality of data highways (20-i, 30-i). ) and a decoding circuit (50) for decoding. In the line concentration method for time division multiplexing that connects to a multiplexing circuit or a decoding circuit, multiple upstream data highways (20-i) are connected in a wired-OR format and connected to the input line of the multiplexing circuit, and the decoding A concentrating system in time division multiplexing, characterized in that signals from the converter circuit are connected to be distributed in parallel to a plurality of downlink data highways (30-i).