Cable-Level Crosstalk Reduction via Vectoring Service Extender
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Solution Overview
Problem
Current DSL technologies face significant challenges in reducing alien crosstalk interference, particularly in VDSL deployments, as existing methods like vectoring are ineffective across different VDSLAMs, leading to limited SNR gains and increased operational expenses due to the need for binder management and complex technician interventions.
Innovation Solution
A device and method for crosstalk reduction, known as the Vectoring Service Extender (VSE), which connects to each cable and includes access multiplexer-side and customer-side transceivers, along with a processor for reducing crosstalk, allowing for vectoring operations at the individual cable level, even with multiple VDSLAMs in the same cabinet, thereby eliminating alien FEXT and optimizing data capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vectoring is implemented across multiple VDSLAMs in the same cabinet, then alien FEXT cancellation is achieved, but device complexity and operational expenses increase due to binder management requirements
Solution Approach 1:
The patent segments the cable infrastructure into individual cable-level units, each equipped with its own VSE device. This segmentation isolates the vectoring operation to specific cable segments, allowing FEXT cancellation within each segment without requiring coordination across multiple VDSLAMs or complex binder management. Each cable becomes an independent unit that can be managed separately.
Solution Approach 2:
The VSE (Vectoring Service Extender) device acts as an intermediary component deployed at the cable level between the VDSLAM and the customer premises. This intermediary enables vectoring operations locally at the cable level, eliminating the need for complex coordination between multiple VDSLAMs and simplifying the overall system architecture by handling FEXT cancellation within the isolated cable segment.
2Object-affected harmful factors
If binder management is implemented to manage crosstalk between multiple VDSLAMs, then alien crosstalk is reduced, but operational expenses and technician interventions increase
Solution Approach 1:
By segmenting the network into cable-level units with dedicated VSE devices, the patent eliminates the need for complex binder management operations. Each cable segment is independently managed, allowing technicians to operate simpler, isolated systems rather than coordinating across multiple VDSLAMs and binders, thereby reducing operational complexity and expenses.
Solution Approach 2:
The VSE device enables self-service vectoring operations at the cable level, where the system automatically manages FEXT cancellation within its isolated segment without requiring complex technician interventions for binder management. The device performs crosstalk reduction autonomously within its designated cable segment, reducing the need for manual operational complexity.
3Productivity
If cable-level vectoring is implemented with multiple VDSLAMs, then data capacity is optimized, but device complexity increases due to multiple access multiplexers
Solution Approach 1:
The patent segments the vectoring operation to the cable level, where each VSE device manages FEXT cancellation independently within its designated cable segment. This segmentation allows multiple VDSLAMs to coexist without increasing overall system complexity, as each VSE device handles its local segment autonomously, optimizing data capacity without requiring coordination between multiple access multiplexers.
Solution Approach 2:
The VSE device serves as an intermediary that enables vectoring operations locally at the cable level, allowing multiple VDSLAMs to operate simultaneously without increasing system complexity. Each VSE device independently manages FEXT cancellation within its segment, optimizing data capacity while maintaining simple, isolated operations that do not require complex coordination between multiple access multiplexers.
Data Source
AI summary
A device for managing signal transport, on a cable level, in a communication system, and a method for using same, are provided herein. The device is connectable between one or more access multiplexers (e.g., Very-high-speed Digital Subscriber Loop Access Multiplexer (VDSLAM) or a switch) and a cable in said communication system. The device includes: a plurality of access multiplexer-side transceivers connectable to access multiplexer-related physical medium, associated with said one or more access multiplexers; a plurality of customer-side transceivers connectable to respective customer-related wire pairs of said cable; and a processor connected to said access multiplexer-side transceivers and said customer-side transceivers, said processor comprising means for reducing crosstalk among said customer-related wire pairs. In some embodiments, vectoring is used for the crosstalk reduction, thus implementing a so-called cable level vectoring (CLV).