Ethernet-Encoded Wavelength Provisioning for DWDM CPE
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Solution Overview
Problem
In dense wavelength-division multiplexing (DWDM) networks, particularly in passive optical networks (PONs), channel provisioning for customer premise equipment (CPE) is challenging due to remote locations making access difficult, and dynamic circuit network issues or skilled personnel shortages can hinder correct provisioning.
Innovation Solution
A method and system that use Ethernet signals to encode and transmit wavelength information, allowing CPEs to automatically determine and use designated wavelengths for communication, enabling remote and automated wavelength provisioning without the need for on-site personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If CPEs are located at remote customer premises, then network coverage is extended, but access for provisioning becomes difficult
Solution Approach 1:
The CPE automatically determines its operating wavelength by receiving Ethernet signals containing wavelength information from the OLT and configuring itself accordingly. This self-provisioning capability eliminates the need for manual on-site configuration, allowing the system to extend coverage to remote locations while maintaining ease of provisioning through automated processes.
2Reliability
If manual provisioning is performed by maintenance personnel, then wavelength configuration can be completed, but skilled personnel may be insufficient and on-site access is required
Solution Approach 1:
The CPE autonomously configures its wavelength by processing Ethernet signals that contain wavelength assignment information. This automated self-provisioning ensures accurate wavelength configuration matching the OLT's expectations while eliminating dependency on skilled maintenance personnel and on-site access, thereby improving both reliability and accessibility.
Solution Approach 2:
Ethernet signals serve as an intermediary carrier to transmit wavelength configuration information from the OLT to the CPE. This intermediary mechanism enables reliable automated provisioning by encoding wavelength assignments in standard Ethernet frames, ensuring accurate configuration without requiring manual intervention.
3Reliability
If the dynamic circuit network is down or overloaded, then network connectivity is disrupted, but CPE provisioning cannot be completed
Solution Approach 1:
The wavelength configuration information is embedded in Ethernet signals that are transmitted during the initial connection establishment phase. This preliminary action ensures that the CPE receives and processes wavelength assignment information before full network operations begin, allowing provisioning to complete even if the DCN experiences subsequent disruptions or overload conditions.
Data Source
AI summary
A system includes a first communication device and a second communication device in communication with the first communication device via an Ethernet connection. The first communication device is configured to transmit, via the Ethernet connection toward the second communication device, an Ethernet signal including information of a designated wavelength from a dense wavelength division multiplexing (DWDM) scheme to be used by the second communication device. The second communication device is configured to transmit an optical signal at the designated wavelength to the first communication device in response to receiving the Ethernet signal.