DSL Data Rate Transition via Priority-Based Function Selection
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Solution Overview
Problem
Existing DSL communication systems struggle to accurately adjust data rates in response to changes in communication parameters without degrading or interrupting the communication service.
Innovation Solution
A method for transitioning from an initial data rate to a new data rate in a multi-carrier communication system by selecting a function to calculate a modified transmission variable based on the relative priorities of communication parameters, allowing for seamless adjustments in bit rate and interleaver depth without interrupting service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data rate is adjusted in response to changes in communication parameters, then communication efficiency is improved, but communication service may be degraded or interrupted
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing multiple functions for adjusting transmission variables (such as interleaver depth and bit loading) before communication service is needed. When parameter changes occur, the system can immediately select and apply a pre-prepared function without interrupting service, thus improving both adjustment efficiency and service continuity.
2Adaptability or versatility
If transmission variable is modified to change data rate, then data rate flexibility is improved, but calculation accuracy of modified transmission variable deteriorates
Solution Approach 1:
The patent applies parameter changes by using multiple different functions to calculate the modified transmission variable, each function optimized for different scenarios. By selecting the appropriate function based on current communication conditions, the system maintains both data rate flexibility and calculation accuracy. The functions transform the initial transmission variable to a modified version with adjusted parameters suitable for changing conditions.
Data Source
AI summary
One embodiment relates to a method for transitioning from an initial data rate utilizing an initial transmission variable to a new data rate in a multi-carrier communication system. In the method, a first function or a second function is selected to calculate a modified transmission variable, wherein the first function or second function is selected as a function of relative priorities of first and second communication parameters. The new data rate is implemented by modification of transmission variable. Other methods and systems are also disclosed.