Twisted-Pair Channel Extension via Cascade Segmentation
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Solution Overview
Problem
Conventional xDSL technologies using unshielded twisted pairs (UTPs) for signal transmission face limitations in meeting high-speed communication demands, as the transmission performance of extended channels is not maximized due to inefficient signal division and significant interference between channels.
Innovation Solution
A method and system that generate non-cascade and cascade extended channels using twisted-pair channels, employing crosstalk cancellation and vector precoding processes to improve transmission performance by utilizing more twisted-pair channels and preventing signal coupling, thereby reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a signal transmitted over the extended channel is divided into two parts and transmitted by using a UTP separately, then the number of extended channels is increased, but the transmission performance of the extended channel is not maximized
Solution Approach 1:
The extended channel signal is divided into two parts that are transmitted separately through different UTPs. This segmentation allows the system to create additional virtual channels from existing physical channels while maintaining signal integrity through proper combination at the receiving end
Solution Approach 2:
The patent implements nested channel structure where extended channels are created within the framework of existing UTP channels. The extended channels are nested by combining signals from multiple UTPs, creating a hierarchical channel structure that maximizes channel utilization
2Reliability
If more UTPs are used to transmit signals for extended channels, then the transmission performance can be improved, but the device complexity increases
Solution Approach 1:
The patent makes UTPs multi-functional by enabling them to serve both as original channels and as components for extended channels. The same UTP infrastructure is used for multiple purposes: direct DM mode transmission and CM mode transmission for extended channels, reducing the need for additional dedicated hardware
Solution Approach 2:
The system dynamically allocates and configures channels based on demand. The extended channel configuration can be flexibly adjusted by selecting different combinations of UTPs, allowing the system to adapt to varying transmission requirements without rigid fixed infrastructure
Data Source
AI summary
The present invention provides a method, a device and a system for extending channels, and belongs to the field of communications technologies. The method includes: generating a non-cascade extended channel by using a first channel and a second channel; and generating a first-level cascade extended channel by using the non-cascade extended channel and a third channel, where the first channel and the second channel are both twisted-pair channels, and the third channel is a twisted-pair channel or another non-cascade extended channel. The device includes a first transformer and a second transformer. The system includes a first device and a second device. In the present invention, a cascade extended channel is generated based on a non-cascade extended channel, and after a signal over the cascade extended channel is divided into two parts, a signal passing through the part of the non-cascade extended channel is transmitted by using two pairs of twisted-pair channels. Compared with the prior art, as more twisted-pair channels are used, the transmission performance of the extended channel is improved.