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A method and apparatus for optical monitor channel processing in an optical network

A technology of optical monitoring channel and network equipment, applied in the field of optical communication, can solve the problems of long processing cycle, inconvenient expansion, poor compatibility, etc.

Active Publication Date: 2019-01-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current approach is that the processing cycle of OSC is too long and introduces a large processing delay.
In addition, the current encapsulation method is not easy to expand, has poor compatibility, and is not suitable for the future large-scale network requirements for OSC

Method used

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  • A method and apparatus for optical monitor channel processing in an optical network
  • A method and apparatus for optical monitor channel processing in an optical network
  • A method and apparatus for optical monitor channel processing in an optical network

Examples

Experimental program
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Effect test

Embodiment 1

[0143] An embodiment of the present invention provides a method, device and system for overhead processing in an optical network. For a service, there are three types of nodes (or network devices) that need to process OSC frames. The first type is the first node, which is the starting node of the service, that is, the customer service starts to be transmitted in the network from this node. The second type is the end node, which is the destination node of the service, that is, the customer service is transmitted to this node for termination. The third type is the intermediate node. The main function of this type of node is to forward the service. For example, it can be as figure 1 OLA and ROADM shown. It should be noted that, according to different specific functions, different types of devices need to process / operate different overheads.

[0144] In a possible networking structure, the network only includes nodes of the first type and the second type, that is, the first nod...

Embodiment 2

[0171] An embodiment of the present invention provides another method, device and system for overhead processing in an optical network. In another possible network structure, in addition to the head node and the end node, there may also be an intermediate device that can handle part of the overhead. For example: OLA. The OLA network device belongs to the network device of the transmission segment, that is, the device terminates its transmission segment with the previous node and starts its transmission segment with the next node, so it needs to deal with the overhead related to the transmission segment.

[0172] Behaviors of the first node and the last node are the same as those described in Embodiment 1, and will not be repeated here. The following focuses on describing the behavior of the intermediate device (for example: OLA). Such as Figure 16 As shown, OLA describes the processing flow of OSC frames as follows:

[0173] In part 161, the intermediate node receives a f...

Embodiment 3

[0191] An embodiment of the present invention provides another method, device and system for overhead processing in an optical network. In a possible network structure, in addition to the head node and the end node, there may also be an intermediate device that handles part of the overhead. For example: ROADM network equipment belongs to the network equipment of the multiplex section, that is, the equipment terminates the transmission section and the multiplex section with the previous node and starts the transmission section and the multiplex section with the next node, so it needs to process the transmission section and the multiplex section. Multiplex section-related overhead. It should be noted that the difference between this embodiment and embodiment 2 lies in that the overhead code block unit to be processed by the intermediate node is different.

[0192] Behaviors of the first node and the last node are the same as those described in Embodiment 1, and will not be repe...

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PUM

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Abstract

A method and apparatus for optical monitor channel processing in an optical network is provided. Embodiments of the present invention relate to the field of optical communications, in particular to overhead processing techniques in optical transport networks. In one method of overhead sending, a network device generates an Optical Monitoring Channel (OSC) frame, the OSC frame includes a pluralityof overhead code block units, each overhead code block unit of the plurality of overhead code block units carries an overhead. The OSC frame carries overhead identification information for identifyingan overhead type of the overhead carried by the plurality of overhead code block units. The overhead includes an optical transmission section overhead, an optical multiplexing section overhead and anintegrated optical branch signal overhead. The network device sends the OSC frame. By adopting the overhead processing technology provided by the invention, the network equipment can extract and parse the overhead code block unit to be processed from the received OSC frame, and the overhead code block unit to be parsed is not required for transparent transmission, thereby reducing the overhead processing cycle, that is, the overhead processing delay. In addition, the overhead processing technology provided by the invention provides a flexible encapsulation and mapping mode, and has good scalability.

Description

technical field [0001] The embodiment of the present invention relates to the field of optical communication, and in particular to overhead processing technology in an optical network. Background technique [0002] As the core technology of next-generation transport network, Optical Transport Network (OTN) has rich operation, management and maintenance (OAM) capabilities and powerful Tandem Connection Monitoring (OTN) capabilities. TCM) capability and out-of-band forward error correction (Forward Error Correction, FEC for short) capability can realize flexible scheduling and management of large-capacity services. Among them, an Optical Supervisory Channel (OSC for short) is used to transmit OAM-related information and protection-related information in the OTN, wherein the OAM-related information and protection-related information are often referred to as overhead. [0003] OTN has the characteristics of large bandwidth and low delay, so it has become an ideal transmission m...

Claims

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Application Information

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IPC IPC(8): H04B10/077
CPCH04B10/077H04Q11/0062H04Q2011/0083H04B10/0773H04B10/0775H04J3/1611H04J3/1652H04J14/0227
Inventor 苏伟陈玉杰马腾·维塞斯
Owner HUAWEI TECH CO LTD
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