DSL Regenerator Adaptive Profile Management
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Solution Overview
Problem
Current DSL regenerators lack the ability to independently adjust DLM profiles for customer-side links based on performance data, leading to potential instability and performance disparities between operator-side and customer-side links, especially in rural areas where fiber networks are not economically viable to extend.
Innovation Solution
A regenerator device with a performance analyser and profile management processor that determines and applies profiles to customer-side links based on locally obtained performance information, allowing for on-board DLM processing and configuration information reuse from existing communication channels, enabling rate-balancing and stability adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If regenerators are deployed in rural areas to extend DSL coverage, then service reach is improved, but performance stability deteriorates due to inability to independently adjust DLM profiles
Solution Approach 1:
The patent divides the DSL network into operator-side and customer-side segments, with the regenerator acting as an independent node that can apply different DLM profiles to each segment. This segmentation allows the customer-side link to be optimized independently based on its specific performance characteristics, resolving the stability issue while maintaining extended reach.
Solution Approach 2:
The regenerator implements dynamic DLM profile adjustment on the customer-side link based on real-time performance monitoring. The system can adaptively change profile parameters such as interleaving depth and redundancy levels according to observed line conditions, enabling the extended link to maintain stability despite varying environmental factors in rural areas.
2Reliability
If additional management channels are added to enable independent DLM control, then link stability improves, but device complexity and cost increase
Solution Approach 1:
The regenerator is designed to perform multiple functions using existing infrastructure: it monitors performance data from the operator-side link, processes DLM decisions locally, and applies appropriate profiles to the customer-side link. This multi-functionality eliminates the need for separate management channels while maintaining full DLM control capability.
Solution Approach 2:
The regenerator autonomously monitors its own customer-side link performance and independently adjusts DLM profiles without requiring external management intervention. This self-service capability allows the device to maintain optimal stability while avoiding the complexity of additional centralized management infrastructure.
3Ease of operation
If operator-side and customer-side links use the same DLM profile, then configuration simplicity is maintained, but performance optimization deteriorates due to different link characteristics
Solution Approach 1:
The system applies the principle of local quality by allowing different DLM profiles to be applied to different segments of the DSL connection. The regenerator selects and applies customer-side profiles based on local performance characteristics such as line length, noise levels, and error rates, optimizing each segment independently rather than using a uniform configuration.
Solution Approach 2:
The regenerator dynamically changes profile parameters on the customer-side link based on monitored performance data. It can adjust interleaving depth, redundancy levels, and other DLM parameters to match the specific characteristics of the customer-side link, thereby optimizing performance while maintaining operational simplicity through automated parameter selection.
Data Source
AI summary
Regenerator devices (30) for use with Digital Subscriber Line (DSL) connections are disclosed which forward user data received in a modulated signal from one link (L1) of a DSL connection on to another link (L2) of the DSL connection. Such devices comprise a first transceiver module (302) which receives a modulated signal from the first link and demodulates it whereby to obtain user data, and a second transceiver module (306) which receives the user data obtained by the first transceiver module and transmits a modulated signal carrying it on to the other link. The device further comprises a performance analyzer (308) which obtains performance information in respect of the second link, and a profile management processor (307) which determines a profile to be applied in respect of the second link in dependence on the performance information obtained in respect thereof. An access net work including one or more such devices and associated methods are also disclosed.