Cell Flow Adjustment Using Dynamic Idle Blocks for Clock Drift
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Solution Overview
Problem
In communication networks, frequency deviations in system operating clocks of different devices cause inconsistent cell flow characteristics, leading to unstable cell flow speeds and potential service interruptions or delays due to cache overflow or phase mismatches.
Innovation Solution
Adjusting the cell flow characteristics by dynamically changing the number of idle or control code blocks within a predetermined period or data stream length to maintain consistent cell flow speed and phase alignment, independent of device operating frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices operate with their own system operating clock frequency, then each device can operate independently, but frequency deviations cause inconsistent cell flow characteristics and instability across the network
Solution Approach 1:
The patent implements a feedback mechanism where the actual cell flow characteristic is detected and compared with the desired characteristic, and the difference information is used to adjust the number of idle blocks dynamically. This closed-loop control ensures that cell flow characteristics remain consistent across devices with different operating frequencies while maintaining independent operation.
Solution Approach 2:
The patent changes the parameter of idle block quantity dynamically based on the detected deviation between actual and desired cell flow characteristics. By adjusting this parameter in response to frequency deviations, the system maintains consistent cell flow characteristics across devices operating at different clock frequencies.
2Reliability
If the number of idle blocks is increased to compensate for frequency deviations, then cell flow characteristic consistency is improved, but transmission efficiency decreases due to more overhead blocks
Solution Approach 1:
The patent makes the idle block quantity dynamic rather than fixed. The system continuously detects the deviation between actual and desired cell flow characteristics and adjusts the idle block number accordingly. This dynamic adjustment ensures consistency while minimizing the overhead introduced by idle blocks, thereby maintaining transmission efficiency.
Solution Approach 2:
The patent dynamically changes the idle block parameter based on real-time detection of cell flow characteristic deviations. By adjusting this parameter only when necessary and by the minimum amount required, the system achieves consistency without unnecessarily reducing transmission efficiency.
3Reliability
If idle blocks are added to adjust cell flow speed, then phase alignment and speed consistency are improved, but transmission delay increases
Solution Approach 1:
The patent uses feedback control to detect phase alignment status and adjust idle block quantity accordingly. By continuously monitoring the actual cell flow characteristic and comparing it with the desired characteristic, the system adds idle blocks only when phase misalignment is detected, minimizing unnecessary delays while maintaining proper phase alignment.
Solution Approach 2:
The system dynamically adjusts idle block insertion based on real-time phase alignment requirements rather than using a fixed insertion rate. This dynamic approach ensures phase alignment is maintained while minimizing the time loss associated with idle blocks.
Data Source
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AI summary
The present invention provides a cell flow characteristic value adjustment method, apparatus and system, and a storage medium. The method comprises: detecting deviation information of an actual characteristic value of a cell flow characteristic in a designated device, and an expected characteristic value; and controlling either of the designated device and an upstream device of the designated device to adjust, on the basis of the deviation information, the number of a predetermined type of code blocks in the sent cell flow so as to adjust the actual characteristic value of the cell flow characteristic in the designated device.