Micro-MSAN Segmentation for DSL Standard Flexibility
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Solution Overview
Problem
Conventional MSAN systems face limitations in flexibility due to space restrictions, power consumption, and structural constraints, preventing users from easily switching between DSL standards and achieving optimal VDSL technology with high bandwidth, especially with long subscriber connection lines and inadequate system dimensioning.
Innovation Solution
The introduction of micro-MSANs, which split fiber optic input lines and use microcontrollers to convert electrical and optical signals, allowing for flexible deployment and support of various DSL standards, enabling each subscriber line to be independently configured with a freely selectable DSL standard, and reducing power consumption for remote electrical feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional MSANs concentrate multiple subscriber lines in one location, then device complexity is reduced, but flexibility for switching between DSL standards is lost
Solution Approach 1:
The patent divides the conventional MSAN into multiple distributed micro-MSANs, each handling individual subscriber lines. This segmentation enables each micro-MSAN to be independently configured with different DSL standards (ADSL, VDSL, G.Fast), providing flexibility while maintaining overall system functionality through modular architecture.
Solution Approach 2:
The patent transitions from a centralized two-dimensional MSAN structure to a distributed three-dimensional network architecture where micro-MSANs are placed at multiple locations (central office, cabinet, customer premises). This dimensional change enables both flexibility in DSL standard selection and simplified individual device design.
2Area of stationary object
If subscriber connection lines are made long to reach distant users, then coverage area is increased, but bandwidth and signal quality deteriorate
Solution Approach 1:
The patent segments the single long subscriber connection into multiple shorter segments by placing micro-MSANs at intermediate locations (cabinets, street cabinets). Each segment has optimized length for high bandwidth, while the distributed architecture collectively covers a large geographic area.
Solution Approach 2:
The patent introduces intermediate micro-MSANs as mediators between the central office and distant users. These intermediate devices act as signal regeneration points, maintaining signal quality over extended distances while enabling broad coverage through strategic placement.
3Ease of operation
If remote electrical feeding is implemented to power distant devices, then operational autonomy is improved, but power consumption becomes excessive
Solution Approach 1:
The patent segments the power distribution system so that each micro-MSAN is powered independently from the central office through separate electrical feeding lines. This segmentation reduces the total power required per device compared to a single distant MSAN, as each micro-MSAN operates at lower power levels closer to users.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides full flexibility in DSL standard selection, reduces power consumption, and allows for compact integration near users, enabling high bandwidth and efficient system operation without major conversion measures, while simplifying technology migration and reducing the need for repeaters.
Implementation Method 1
a microcontroller which converts between the electrical and the optical signals
Implementation Method 2
an input line made of fiber optics over which optical signals are sent
Data Source
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AI summary
A system for providing connections based on a DSL standard, comprising an input fiber optic line over which optical signals are transmitted, a plurality of wired subscriber lines for transmitting electrical and/or optical signals, each assigned to a user, a multi-service access multiplexer (MSAN) into which the input fiber optic line and the subscriber lines enter, the MSAN performing a transformation between the electrical and/or optical signals of a specific DSL standard, a splitter that divides the input line into a plurality of split input fibers, each with an individual micro-MSAN intended for a specific DSL standard being connected between a single split input fiber and a single subscriber line, the micro-MSAN comprising a microcontroller.which performs a conversion between electrical and/or optical signals.