Segmented DSL Modem Architecture for Copper Wire Length Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
DSL technologies face limitations in achieving high data transmission rates due to the distance of DSLAMs from customer premises, as they are typically located in central offices, leading to increased copper wire pair lengths and reduced data transfer efficiency.
Innovation Solution
A communication system comprising a first modem part installed at a location intermediate between the customer premises and the central office, and a second modem part in the central office, connected via a broadband data connection, which together perform the functionalities of a DSL modem, reducing the need for DSLAMs in street cabinets and allowing for higher data transmission rates by decreasing copper wire pair length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If DSLAM is located in central office, then device complexity is reduced, but data transmission rate decreases due to increased copper wire pair length
Solution Approach 1:
The patent segments the DSL modem functionality into two separate parts: a first modem part located at an intermediate position (street cabinet) and a second modem part located at the central office. This segmentation allows the system to achieve high data transmission rates by reducing copper wire pair length at the customer premises while maintaining centralized control and management at the central office, thus resolving the contradiction between device complexity and transmission speed.
2Speed
If DSLAM is moved to street cabinet to reduce copper wire length, then data transmission rate increases, but device complexity and hardware deployment complexity increase
Solution Approach 1:
By segmenting the modem functionality into remote and central parts, the patent enables deployment of only essential components at the street cabinet level while keeping the majority of complex processing and management functions at the central office, thus reducing overall deployment complexity while maintaining high transmission rates.
Solution Approach 2:
The first modem part at the intermediate position acts as an intermediary between the customer premises and the central office, performing local signal processing and conditioning to enable high-rate transmission over short copper segments while relying on the second modem part at the central office for complex functions, thus simplifying the street cabinet deployment.
3Speed
If full DSL modem is deployed at street cabinet, then data transmission rate increases, but power consumption and size requirements at street cabinet increase
Solution Approach 1:
The patent extracts the power-intensive and space-consuming functions of the DSL modem (such as digital signal processing, error correction, and protocol management) and relocates them to the second modem part at the central office, leaving only essential signal conditioning and transmission functions at the street cabinet, thus reducing power consumption and size requirements at the intermediate location while maintaining high data transmission rates.
Data Source
AI summary
A communication system comprises a first modem part arranged at a first location and a second modem part arranged at a second location that is remote from the first location. The first modem part and the second modem part in combination perform functionalities of a modem.