OTN Multiplexing with Envelope Metadata for Traffic Identification
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Solution Overview
Problem
Optical transport networks (OTNs) face challenges in efficiently multiplexing and demultiplexing different types of data traffic, particularly in identifying client traffic without demultiplexing Low Order OTN containers, which hinders efficient communication and management.
Innovation Solution
The method involves mapping signals to Low Order OTN containers, aggregating them into High Order OTN containers, and then to High Order OTN envelopes, while inserting identifying information such as port, protocol type, and time slots into the envelope, allowing for efficient identification and management without demultiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If signals are multiplexed into Low Order OTN containers and aggregated into High Order OTN containers, then network communication efficiency is improved, but the ability to identify client traffic without demultiplexing is lost
Solution Approach 1:
The patent applies preliminary action by inserting identification information (client signal ID, port ID, protocol type, time slot) into the High Order OTN container during the multiplexing process, before demultiplexing occurs. This allows the receiving end to identify and route client traffic correctly without needing to fully demultiplex the Low Order OTN containers, thus maintaining network communication efficiency while preserving identification capability.
2Measurement precision
If demultiplexing of Low Order OTN containers is performed to identify client traffic, then traffic identification accuracy is improved, but network management complexity and processing time increase
Solution Approach 1:
The patent extracts the essential identification information (client signal ID, port ID, protocol type, time slot) from the Low Order OTN containers and places it into the High Order OTN container. This extraction allows the system to identify client traffic by reading the High Order container without performing full demultiplexing of Low Order containers, thereby maintaining identification accuracy while reducing network management complexity and processing time.
3Ease of operation
If identification information is inserted into High Order OTN envelope, then client traffic management is improved, but data structure complexity increases
Solution Approach 1:
The patent implements a universal identification information structure that can accommodate multiple types of client traffic (different protocol types, ports, and time slots) within a standardized format in the High Order OTN container. This multi-functional structure enables simplified client traffic management operations while maintaining organized and accessible data, balancing ease of operation with controlled data structure complexity.
Data Source
AI summary
In one embodiment, a method includes receiving a plurality of signals at a plurality of ports, each of the signals having a protocol type; mapping each of the signals to one or more time slots of one of a plurality of Low Order Optical Transport Network (OTN) containers; mapping the Low Order OTN containers to a High Order OTN container; mapping the High Order OTN container to a High Order OTN envelope for communication over an OTN; and, in connection with the mapping of the High Order OTN container to the High Order OTN envelope, for each of the signals, inserting into the High Order OTN envelope information identifying the port that the signal was received at, the protocol type of the signal, the Low Order OTN container that the signal was mapped to, and one or more of the time slots that the signal was mapped to.