Method and system for communication in optical communication system

Patent metadata

Field	Value
Publication number	US-9307303-B2
Application number	US-201514616345-A
Country	US
Kind code	B2
Filing date	Feb 6, 2015
Priority date	Jul 3, 2009
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

The present invention discloses a method and system for communication. The method includes: according to a network resource and a signal type of a label switched path to be established, generating, by a first optical communication device, a label indicating that a first optical channel data unit is multiplexed to a second optical channel data unit, wherein the label comprises a tributary slot assignment indication field indicating a tributary slot occupied in the second optical channel data unit, and a length of the tributary slot assignment indication field is equal to the number of tributary slots of the second optical channel data unit; sending the label to a second optical communication device; obtaining, by the second optical communication device, the label; and multiplexing, by the second optical communication device, the first optical channel data unit to the second optical channel data unit based on the label.

First claim

What is claimed is:

1. A communication method in an optical network, comprising:
according to a network resource and a signal type of a label switched path to be established, generating, by a first optical communication device, a label indicating that a first optical channel data unit is multiplexed to a second optical channel data unit, wherein the label comprises a tributary slot assignment indication field indicating a tributary slot occupied in the second optical channel data unit, and a length of the tributary slot assignment indication field is equal to the number of tributary slots of the second optical channel data unit;
sending, by the first optical communication device, the label to a second optical communication device;
obtaining, by the second optical communication device, the label; and
multiplexing, by the second optical communication device, the first optical channel data unit to the second optical channel data unit based on the label.

2. The method according to claim 1 , wherein
the label further comprises a first signal type indication field indicating a signal type of the first optical channel data unit and a second signal type indication field that indicating a signal type of the second optical channel data unit.

3. The method according to claim 1 , wherein the label further comprises a length field indicating the length of the tributary slot assignment indication field.

4. The method according to claim 1 , wherein the label further comprises a tributary slot type indication field indicating a tributary slot type of the second optical channel data unit.

5. The method according to claim 1 , wherein the tributary slot assignment indication field uses a value at a bit of the tributary slot assignment indication field to indicate the tributary slot occupied in the second optical channel data unit.

6. An optical communication system, comprises a first optical communication device and a second optical communication device,
wherein the first optical communication device is configured to:
generate a label indicating a first optical channel data unit is multiplexed to a second optical channel data unit according to a network resource and a signal type of a label switched path to be established, wherein the label comprises a tributary slot assignment indication field indicating a tributary slot occupied in the second optical channel data unit, and a length of the tributary slot assignment indication field is equal to the number of tributary slots of the second optical channel data unit; and
send the label to the second optical communication device; and
wherein the second optical communication device is configured to:
obtain the label; and
multiplex the first optical channel data unit to the second optical channel data unit based on the label.

7. The optical communication system according to claim 6 , wherein the label further comprises a first signal type indication field indicating a signal type of the first optical channel data unit and a second signal type indication field that indicating a signal type of the second optical channel data unit.

8. The optical communication system according to claim 6 , wherein the label further comprises a length field indicating the length of the tributary slot assignment indication field.

9. The optical communication system according to claim 6 , wherein the label further comprises a tributary slot type indication field indicating a tributary slot type of the second optical channel data unit.

10. The optical communication system according to claim 6 , wherein the tributary slot assignment indication field includes a value at a bit to indicate the tributary slot occupied in the second optical channel data unit.

Assignees

• Huawei Tech Co Ltd

Inventors

• Lin Yi
• Zi Xiaobing

Classifications

• H04L47/80

  Actions related to the user profile or the type of traffic · CPC title

• H04J3/1652

  Optical Transport Network [OTN] · CPC title

• H04J3/1664 Primary

  carrying hybrid payloads, e.g. different types of packets or carrying frames and packets in the paylaod · CPC title

• H04Q11/0066 Primary

  Provisions for optical burst or packet networks · CPC title

• H04Q2011/0086

  Network resource allocation, dimensioning or optimisation · CPC title