Cascading Optical Network Topology Detection via OEO Device Reporting
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Solution Overview
Problem
Existing methods fail to effectively determine the connection relationship between devices in a cascading optical network, particularly when multiple devices are connected in a daisy chain topology, as current solutions for one-level networks are not applicable.
Innovation Solution
A method for determining network connection relationships involves optical-electrical-optical devices obtaining and transmitting information about lower-level devices, using physical layer operations, administration, and maintenance messages, along with time domain resource allocation, to establish a connection relationship between devices in a cascading optical network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods for one-level networks are used to determine connection relationships in cascading optical networks, then the existing methods can be applied, but they fail to effectively determine the connection relationship between devices in cascading topology
Solution Approach 1:
The patent segments the network determination process by introducing intermediate OEO devices that independently determine and report connection relationships between OLT and ONT devices. This segmentation allows the system to handle cascading topologies by breaking down the complex multi-device connection determination into manageable segments, where each OEO device reports its local connection status to the OLT.
2Reliability
If new methods are developed specifically for cascading optical networks, then connection relationships can be effectively determined, but the complexity of the determination process increases
Solution Approach 1:
The patent implements self-service by enabling OEO devices to autonomously determine their own connection relationships with OLT and ONT devices, and automatically report this information to the OLT. This self-determination and self-reporting mechanism reduces the complexity of centralized control while ensuring reliable connection relationship determination in cascading networks.
Solution Approach 2:
The patent employs feedback mechanisms where OEO devices continuously monitor and report connection relationship changes to the OLT. This feedback loop ensures that the OLT maintains an accurate view of the network topology without requiring complex centralized determination algorithms, thereby reducing overall system complexity while maintaining high reliability.
3Loss of information
If detailed information about all lower-level devices is collected and transmitted, then complete connection relationship information is obtained, but the resource overheads increase
Solution Approach 1:
The patent extracts only the essential connection relationship information (OLT-ONF connection status) that OEO devices need to report to the OLT, rather than transmitting all possible device details. This extraction approach maintains information completeness for topology determination while significantly reducing the resource overheads associated with transmitting and processing extensive device information.
4Reliability
If frequent updates of device status information are performed, then real-time connection relationship information is maintained, but the exchange procedure becomes more complex
Solution Approach 1:
The patent implements periodic action by having OEO devices update and report connection relationship information at scheduled intervals or upon specific triggering events (such as connection changes). This periodic update mechanism maintains real-time information accuracy while avoiding the complexity of continuous monitoring and exchange procedures, thereby reducing system complexity while preserving reliability.
Data Source
AI summary
This application provides a method for determining a network connection relationship and a communication apparatus, to obtain a connection relationship between cascaded devices, and the method may be applied to a communication system.