Wired Full-Duplex Transmission Frames for Power-Efficient Crosstalk Control
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Solution Overview
Problem
Modern telecommunication systems face challenges in achieving power-efficient full duplex (FDX) operation, particularly in scenarios involving remote or reversed feeding, where intermediate units in cabinets or distribution points require efficient power management to reduce latency and increase throughput.
Innovation Solution
The implementation of frames for FDX data transmission that include priority and non-priority subframes with aligned or partially aligned continuous and discontinuous operation intervals, allowing for reduced power consumption by minimizing data transmission during certain symbol positions, thereby optimizing power usage and crosstalk cancellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous data transmission is performed in full duplex mode, then throughput is increased, but power consumption increases
Solution Approach 1:
The patent applies periodic action by implementing discontinuous operation intervals within the data transmission frame structure. During these intervals, data transmission is temporarily suspended to allow crosstalk cancellation processing, creating a periodic pattern of transmission and pause that reduces overall power consumption while maintaining full duplex capability.
Solution Approach 2:
The patent segments the data transmission frame into distinct subframes with different operational characteristics. Priority subframes contain important data that requires transmission, while non-priority subframes can be suspended or reduced during discontinuous operation intervals. This segmentation allows selective power management without completely interrupting critical data flow.
2Use of energy by moving object
If power saving mode is implemented with discontinuous transmission, then power consumption is reduced, but latency increases
Solution Approach 1:
The patent applies local quality by differentiating between priority and non-priority data subframes. Critical priority subframes maintain continuous transmission to minimize latency for important data, while non-priority subframes utilize discontinuous operation intervals for power saving. This localized application of transmission strategies optimizes the latency-power tradeoff for different data types.
3Productivity
If full duplex operation is implemented, then throughput is increased, but crosstalk interference increases
Solution Approach 1:
The patent converts the harmful crosstalk effect into a benefit by utilizing the discontinuous operation intervals specifically for crosstalk cancellation processing. The periods when transmission is suspended are deliberately used to measure and cancel crosstalk, transforming what would be harmful interference into a mechanism that improves overall signal quality and enables higher throughput full duplex operation.
Data Source
AI summary
An apparatus for a wired communication link is provided. The apparatus includes transmit circuitry for transmitting downstream data over the wired communication link during a frame for full duplex data transmission. The frame comprises a first subframe and a second subframe for downstream data transmission. The first subframe coincides in time with a third subframe of the frame for upstream data transmission, wherein the second subframe coincides in time with a fourth subframe of the frame for upstream data transmission. The first subframe and the fourth subframe are priority subframes. The second subframe and the third subframe are non-priority subframes. Each of the first subframe and the fourth subframes comprises a respective discontinuous operation interval.