JP2944289B2 - Line switching control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line switching control system, and more particularly to a line switching control system in a line switching device.

[0002]

2. Description of the Related Art In a digital microwave communication system or the like, a switching control signal is transmitted from a line switching control device to a line switching device, and the line switching device performs multi-carrier switching based on the switching control signal. Transmission of a switching response signal to a line switching control device is performed.

FIG. 2 is a block diagram of a first example of a conventional line switching control system. Here, it is assumed that matrix switching of three multi-carriers is performed. The switching control signal S1 from the line switching control device 1 is received by the control signal interface circuit 6, and multicarrier switching control is performed on the carrier switching circuit 8 based on the switching control signal S1.

After the switching operation, a switching response signal is transmitted from the carrier switching circuit 8 to the control signal interface circuit 6,
The control signal interface circuit 6 makes a logical determination of the switching response, and transmits the switching response signal S2 resulting from the logical determination to the line switching control device 1.

FIG. 3 is a block diagram of a second example of the conventional line switching control system. When the transmission capacity per carrier is large, a carrier is constituted by a plurality of signal trains.

In FIG. 3, signals S11 and S12 constitute a first carrier, signals S21 and S22 constitute a second carrier, and signals S31 and S32 constitute a third carrier. It is assumed that matrix switching of three multicarriers is performed. At this time, the control signal interface circuit 6
And the control signal interface circuit 7, and the carrier switching circuit 8 and the carrier switching circuit 9 are configured to be the same circuit. In this case, the following method is known in the conventional line switching control system.

That is, the switching control signal S 1 from the line switching control device 1 is received by the control device interface circuit 10, and the switching control signal S 3 is transmitted from the control device interface circuit 10 to the control signal interface circuit 6.
Switching control signal S for control signal interface circuit 7
4 respectively. The same switching control is performed from the control signal interface circuit 6 to the carry switching circuit 8 based on the switching control signal S3 and from the control signal interface circuit 7 to the carry switching circuit 9 based on the switching control signal S4.

After the switching operation, a switching response signal is transmitted from the carrier switching circuit 8 to the control signal interface circuit 6 and from the carrier switching circuit 9 to the control signal interface circuit 7, respectively, and the control signal interface circuit 6 and the control signal interface circuit 7 are transmitted. , A logical determination of the switching response signal is performed. The switching response signal S5 after the logic decision is sent from the control signal interface circuit 6 to the control device interface circuit 10 and the switching response signal S5 after the logic decision is sent from the control signal interface circuit 7 to the control device interface circuit 10.
6 respectively, and the control device interface circuit 1
0, a logical determination is made between the switching response signal S5 and the switching response signal S6, and the switching response signal S2 of the logical determination result is obtained.
To the line switching control device S1.

[0009]

However, in the conventional example shown in FIG. 2 described above, it is necessary to prepare different types of carrier switching circuits or control signal interface circuits every time the transmission capacity of the main signal is different. There is a disadvantage that there is no sex.

Further, the conventional example shown in FIG. 3 has a drawback that a new control device interface circuit is required and the circuit scale becomes large.

Accordingly, a technical problem of the present invention is to provide a line switching control system which can use a carrier switching circuit and a control signal interface circuit in common without increasing the circuit scale even when the transmission capacity of the main signal is different. Is to do.

[0012]

According to the present invention, there are provided N control signal interface circuits paired with each of the N carrier switching circuits, and a switching control signal for each of the N control signal interface circuits. Receiving means for receiving, switching means for causing the N carrier switching circuits to perform the same switching operation based on the switching control signal, and switching response signals relating to the switching operation to the N carrier switching circuits, respectively. Transmitting means for transmitting to the N control signal interface circuits, transfer means for transferring the switching response signal from the remaining control signal interface circuits to one control signal interface circuit, and Logic determination means for performing a logical determination on the collected N switching response signals, and a switching response signal of the logical determination result. Line switching control method is obtained, characterized in that it comprises a transmitting means for transmitting to the line switching control device.

That is, a circuit switching control system according to the present invention is a line switching device for performing multi-carrier switching under the control of a line switching control device, wherein the first means having N carrier switching circuits and the carrier switching circuit A second means having N control signal interface circuits paired with each of the above, and a third means for receiving a switching control signal from the circuit switching control device for each of the N control signal interface circuits.
Means, N carrier switching circuits for performing the same switching operation based on the switching control signal, and N switching means for switching the switching response signal relating to the switching operation from the N carrier switching circuits. Fifth means for transmitting the switching response signal to any one of the N main control signal interface circuits and the other (N-1) subordinate control signals Sixth means for transferring from the interface circuit, seventh means for performing a logical decision on the N switching response signals collected by the main control signal interface circuit, and switching the switching response signal of the logical decision result to a line Eighth means for transmitting to the switching control device.

[0014]

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

FIG. 1 is a block diagram of one embodiment of the present invention.

In the embodiment shown in FIG. 1, the signal S1
1 and the signal S12 to form the first carrier as the signal S21.
And a signal S22 to form a second carrier, and a signal S31 and a signal S32 to form a third carrier, respectively.
The control signal interface circuit 2, the control signal interface circuit 3, and the carrier switching circuit 4
The carrier switching circuit 5 and the carrier switching circuit 5 are configured to be the same circuit as in the conventional example described above.

A switching control signal S from the line switching controller 1
1 are simultaneously received by the control signal interface circuit 2 and the control signal interface circuit 3, and based on the switching control signal S1, the control signal interface circuit 2 switches the carrier switching circuit 4 and the control signal interface circuit 3 switches the carrier. The same switching control is performed for each of the circuits 5.

After the switching operation, a switching response signal is transmitted from the carrier switching circuit 4 to the control signal interface circuit 2, from the carrier switching circuit 5 to the control signal interface circuit 3, and further from the control signal interface circuit 3 to the control signal interface circuit. 2 is transferred to the switching response signal.

In the control signal interface circuit 2,
The logic determination of the collected switching response signal is performed, and the switching response signal S2 resulting from the logic determination is transmitted to the line switching control device 1.

Although the above embodiment has been described with reference to the case where matrix switching of three multicarriers is performed, the present invention is applicable regardless of the number of multicarriers and the type of switching (whether or not matrix switching is performed).

Further, in the above embodiment, the operation in the configuration having two carrier switching circuits and two control signal interface circuits paired with the two carrier switching circuits has been described. The present invention can be applied to a configuration having a control signal interface circuit paired with each of them.

[0022]

As described above, the present invention is composed of a plurality of carrier switching circuits and a control signal interface circuit paired with each of the plurality of carrier switching circuits, and is subordinate to one main control signal interface circuit. Since the switching response signal is transferred from the control signal interface circuit and the logic of the switching response is determined in the main control signal interface circuit, even when the transmission capacity of the main signal is different,
The carrier switching circuit and the control signal interface circuit can be used in common without increasing the circuit scale, and the versatility is enhanced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a first example of a conventional line switching control method.

FIG. 3 is a block diagram showing a second example of the conventional line switching control method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 line switching control device 2 control signal interface circuit 3 control signal interface circuit 4 carrier switching circuit 5 carrier switching circuit 6 control signal interface circuit 7 control signal interface circuit 8 carrier switching circuit 9 carrier switching circuit 10 control device interface circuit

Continued on the front page (72) Yoshio Mori, Inventor Nippon Telegraph and Telephone Corporation, 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo (72) Inventor Koshiro Akinaga 1-1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Stocks In-company (56) References JP-A-4-243317 (JP, A) JP-A-1-232895 (JP, A) JP-A-63-38333 (JP, A) (58) Fields studied (Int. . ^6, DB name) H04Q 3/52

Claims (1)

(57) [Claims] An N control signal interface circuit paired with each of the N carrier switching circuits; a receiving means for receiving a switch control signal for each of the N control signal interface circuits; Switching means for causing the N carrier switching circuits to perform the same switching operation on the basis of the above, and switching response signals relating to the switching operation to the N control signal interface circuits to be paired with the N carrier switching circuits, respectively. Sending means for sending, transfer means for transferring the switching response signal from the remaining control signal interface circuit to one control signal interface circuit, and N switching response signals collected by the one control signal interface circuit Logic determining means for performing a logical determination; and a transmission means for transmitting a switching response signal of the logical determination result to the line switching control device. And a line switching control method.