Automatic CDR Alignment and Locking for Multi-Rate Optical Signals
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Solution Overview
Problem
Current clock data recovery (CDR) circuitry in communication networks requires manual or semi-automatic provisioning to align with specific communication signal bit rates and wavelengths, leading to laborious, error-prone, and costly processes, especially in complex network infrastructures supporting high-speed services like 10 Gigabit, 100 Gigabit, and 400 Gigabit transmission speeds.
Innovation Solution
The development of circuitry, systems, and methods that automatically align and lock to communication signal bit rates or wavelengths without manual or remote provisioning, utilizing clock data recovery (CDR) and microprocessor (MPU) circuitries to re-clock and regenerate signals, eliminating the need for technical intervention and reducing installation complexities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual or semi-automatic provisioning is used to align CDR circuitry with specific bit rates, then the CDR circuitry can be configured for specific communication services, but the provisioning process becomes laborious, error-prone, and costly
Solution Approach 1:
The CDR circuitry automatically detects the bit rate of incoming communication signals and configures itself without requiring manual intervention. The system self-provisions by monitoring signal characteristics and adjusting its alignment parameters autonomously, eliminating the need for technical personnel to manually configure the circuitry for different communication services
Solution Approach 2:
The system continuously monitors the alignment status of the CDR circuitry with incoming signals and uses this feedback to automatically adjust configuration parameters. The microprocessor detects whether the CDR is properly locked onto the signal bit rate and dynamically modifies settings to maintain optimal alignment, creating a closed-loop control system
2Speed
If CDR circuitry is pre-provisioned for specific bit rates, then it can quickly align to known services, but it cannot adapt to different communication signal bit rates without manual reconfiguration
Solution Approach 1:
The CDR circuitry transitions from a static, pre-configured state to a dynamic system that automatically adapts to different bit rates. The microprocessor enables real-time reconfiguration of the CDR parameters based on detected signal characteristics, allowing the system to dynamically adjust to various communication services without manual intervention
Solution Approach 2:
The system automatically changes operational parameters of the CDR circuitry based on detected signal bit rates. The microprocessor modifies configuration parameters such as sampling rates and timing offsets to match the incoming signal characteristics, enabling the circuitry to adapt to different bit rates while maintaining fast alignment performance
3Reliability
If manual provisioning is performed by technical personnel, then specific communication services can be configured, but installation and maintenance errors increase and repair delays occur
Solution Approach 1:
The system eliminates the need for manual provisioning by implementing automatic detection and configuration capabilities. The CDR circuitry with integrated microprocessor autonomously identifies communication service parameters and configures itself, removing human operators from the provisioning process and thereby eliminating installation and configuration errors
Solution Approach 2:
The microprocessor acts as an intermediary between the incoming communication signals and the CDR circuitry configuration. It automatically extracts bit rate information from signals and translates this into appropriate configuration parameters for the CDR, simplifying the overall system while improving reliability by eliminating manual intervention
4Measurement precision
If CDR circuitry requires coordinated provisioning with communication equipment, then alignment accuracy improves, but the provisioning process becomes more complex and time-consuming
Solution Approach 1:
The CDR circuitry independently detects and locks onto the bit rate of incoming communication signals without requiring coordination or pre-provisioning with external equipment. The automatic detection capability allows the system to achieve precise alignment autonomously, eliminating time-consuming coordination processes while maintaining high alignment accuracy
Data Source
AI summary
The present subject matter relates to methods, systems, circuitry, equipment and devices providing for the automatic provisioning of clock data recovery (CDR) circuitry to automatically align, tune and lock the CDR circuitry to a communication signal. The methods, systems, circuitry, equipment and devices comprise a first CDR circuitry and a second CDR circuitry, and a first connection having two paths and a second connection having two paths. The CDR circuitry is automatically aligned kind locked a communication signal bit rate or wavelength or both. Automatic alignment is achieved by progressing through a communication services list until a communication signal bit rate or wavelength is aligned.