DSL Distribution Point Dynamic Discontinuous Operation
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Solution Overview
Problem
Modern DSL systems deployed from distribution points face challenges in reducing power consumption due to operating in low signal-to-noise ratios and long propagation delays, which hinder efficient data transmission and increase power usage, especially when dealing with complex traffic patterns and variable data frames.
Innovation Solution
The method involves providing a transmission opportunity with a payload portion and control information that indicates the completion of the payload, allowing the receiver to prepare for a low power state after data transmission, using a flag or symbol pattern to signal the end of data transfer, and optimizing transmission modes to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous operation is implemented to reduce power consumption, then energy efficiency improves, but the ability to detect signal end becomes difficult due to low signal-to-noise ratio
Solution Approach 1:
The patent introduces a mediator element (special symbol or control signal) that facilitates the detection of signal end. This intermediary component carries explicit end-of-transmission information that can be reliably detected even in low SNR conditions, solving the detection difficulty without compromising power saving goals
Solution Approach 2:
The patent applies preliminary action by sending control information or special symbols before the actual data transmission ends. These preliminary indicators prepare the receiver in advance, allowing it to know when to stop receiving and enter low power state, thus enabling reliable detection despite low signal-to-noise ratio
2Use of energy by moving object
If transmission duration is set for large quantity (superframe), then power consumption reduces, but adaptability to complex traffic patterns deteriorates
Solution Approach 1:
The patent implements dynamics by making the transmission duration configurable and adaptable. Instead of fixed long-duration transmission, the system can dynamically adjust the transmission window size based on actual traffic needs, allowing both power saving during low activity and rapid adaptation during high activity periods
Solution Approach 2:
The patent applies segmentation by dividing the transmission opportunity into smaller, manageable units. This allows the system to transmit only when needed within the superframe structure, maintaining power efficiency while improving adaptability to varying traffic patterns through finer-grained control
3Loss of time
If control information is transmitted frequently to indicate completion, then receiver can enter low power state timely, but system complexity increases
Solution Approach 1:
The patent extracts the essential control function from complex continuous signaling. By using specific predefined symbols or simple control bits at strategic positions, it achieves timely notification of transmission end without requiring complex continuous control mechanisms, thus reducing system complexity while maintaining fast response
Data Source
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AI summary
Methods and apparatus to transmit data are disclosed. An embodiment comprises providing transmission opportunities for data to be transmitted. A transmission opportunity can comprise a payload portion for payload. The method comprises transmitting the payload portion. The payload portion comprises a beginning portion from beginning of the payload portion and a completion portion to completion of the payload portion. An embodiment comprises transmitting control information after the beginning portion is transmitted and before the completion portion of the payload portion is transmitted. In an embodiment the control information is indicative of a future completion of the transmitting the payload portion.