Add/drop multiplexer and method for processing signal in add/drop multiplexer

Patent metadata

Field	Value
Publication number	US-10097305-B2
Application number	US-201715782745-A
Country	US
Kind code	B2
Filing date	Oct 12, 2017
Priority date	Apr 16, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

The present application discloses an add/drop multiplexer, including a first line board and a tributary board, where the first line board includes at least a first interface and a second interface, the first interface is disposed between the tributary board and the first line board, and the second interface is disposed on a network side of the first line board; the first line board is configured to output a first signal received from a first link through the second interface; the first line board is configured to output a second signal received from the first link to the tributary board through the first interface; and the first line board is configured to receive a third signal from the tributary board through the first interface, and input the third signal into the first link. An inter-board interface on a link is effectively eliminated, thereby improving a link bandwidth of a device.

First claim

What is claimed is:

1. An add/drop multiplexer, comprising:
a tributary board; and
a first line board comprising at least a first interface and a second interface, the first interface is disposed between the tributary board and the first line board, and the second interface is disposed on a network side of the first line board, and wherein the first line board is configured to:
receive a first signal from a first link, and output the first signal through the second interface,
receive a second signal from the first link, and output the second signal to the tributary board through the first interface, and
receive a third signal from the tributary board through the first interface, and input the third signal into the first link.

2. The add/drop multiplexer according to claim 1 , further comprising:
a second line board comprising at least a third interface and a fourth interface, the third interface is disposed between the tributary board and the second line board, and the fourth interface is disposed on a network side of the second line board, and wherein the second line board is configured to:
receive a fourth signal from a second link, and output the fourth signal through the fourth interface;
receive a fifth signal from the second link, and output the fifth signal to the tributary board through the third interface; and
receive a sixth signal from the tributary board through the third interface, and input the sixth signal into the second link.

3. The add/drop multiplexer according to claim 1 , wherein the tributary board is disposed on either side of the first line board and the second line board.

4. The add/drop multiplexer according to claim 1 , wherein the tributary board is disposed on a same side of the first line board and the second line board.

5. The add/drop multiplexer according to claim 1 , wherein:
the tributary board further comprises a combiner/selector and a replicator/distributor; and
the tributary board is configured to:
receive the second signal from the first line board,
generate a downlink service by using the combiner/selector,
send the downlink service to a client device,
receive an uplink service from the client device,
generate the third signal by using the replicator/distributor, and
input the third signal into the first line board.

6. The add/drop multiplexer according to claim 1 , further comprising:
a third line board having a combiner/selector and a replicator/distributor of the tributary board integrated into the third line board, and comprising at least a fifth interface and a sixth interface, the fifth interface is disposed between the first line board and the third line board, and the sixth interface is disposed on a network side of the third line board, and wherein the third line board is configured to:
receive a seventh signal from a third link, and output the seventh signal through the sixth interface;
receive an eighth signal from the third link;
output, to the first line board through the fifth interface, the eighth signal after the eighth signal passes through the replicator/distributor;
receive a ninth signal from the first line board through the fifth interface; and
input the ninth signal into the third link by using the combiner/selector.

7. A method for processing a signal in an add/drop multiplexer, the method comprising:
receiving, by a first line board, a first signal from a first link, and outputting the first signal through a second interface, wherein the second interface is disposed on a network side of the first line board;
receiving, by the first line board, a second signal from the first link, and outputting the second signal to a tributary board through a first interface, wherein the first interface is disposed between the tributary board and the first line board; and
receiving, by the first line board, a third signal from the tributary board through the first interface, and inputting the third signal into the first link.

8. The method according to claim 7 , further comprising:
receiving, by a second line board, a fourth signal from a second link, and outputting the fourth signal through a fourth interface, wherein the fourth interface is disposed on a network side of the second line board;
receiving, by the second line board, a fifth signal from the second link, and outputting the fifth signal to the tributary board through a third interface, wherein the third interface is disposed between the tributary board and the second line board; and
receiving, by the second line board, a sixth signal from the tributary board through the third interface, and inputting the sixth signal into the second link.

9. The method according to claim 7 , wherein:
receiving, by the tributary board, the second signal from the first line board;
generating, a downlink service using a combiner/selector on the tributary board, and sending the downlink service to a client device; and
receiving, by the tributary board, an uplink service from the client device;
generating the third signal using a replicator/distributor on the tributary board, and inputting the third signal into the first line board.

10. The method according to claim 7 , further comprising:
receiving, by a third line board, a seventh signal from a third link, and outputting the seventh signal through a sixth interface, wherein the sixth interface is disposed on a network side of the third line board;
receiving, by the third line board, an eighth signal from the third link, and outputting, to the first line board through a fifth interface, the eighth signal after the eighth signal passes through a replicator/distributor, wherein the fifth interface is disposed between the first line board and the third line board; and
receiving, by the third line board, a ninth signal from the first line board through the fifth interface, and inputting the ninth signal into the third link by using a combiner/selector.

Assignees

• Huawei Tech Co Ltd

Inventors

• Xiang Hui

Classifications

• H04J3/14

  Monitoring arrangements {(for SDH/SONET rings H04J3/085)} · CPC title

• H04Q2213/13003

  Constructional details of switching devices · CPC title

• H04Q2011/0088

  Signalling aspects · CPC title

• H04Q11/0071

  Provisions for the electrical-optical layer interface · CPC title

• H04J14/0215 Primary

  Architecture aspects · CPC title