DSL Bandwidth Estimation via Deployment Factor Integration
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Solution Overview
Problem
Current methods for measuring the bandwidth of DSL lines, such as SELT, DELT, and MELT, provide increasingly imprecise estimations due to neglecting deployment factors, which become more significant with shorter lines and more advanced protocols like VDSL2 and G.fast.
Innovation Solution
A method and system that generate rate versus reach curves using laboratory tests and diagnostic data to accurately estimate bandwidth by considering deployment factors like modem types and CPE modems, incorporating a line management subsystem and diagnostic/test data analyzer to determine initial line profiles for new services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional measurement methods (SELT, DELT, MELT) are used to estimate bandwidth, then the measurement process is simple and quick, but the estimation precision deteriorates due to neglecting deployment factors
Solution Approach 1:
The patent applies preliminary action by pre-collecting deployment factor data (modem types, CPE modems, line characteristics) before performing bandwidth estimation. This allows the measurement system to account for these factors in advance, improving precision without adding complexity to the actual measurement process. The system pre-processes deployment information and stores it for use during estimation.
Solution Approach 2:
The patent introduces an intermediary component - a database or storage system that holds deployment factor information. This intermediary mediates between the complex deployment data and the bandwidth estimation process, allowing precise measurements without directly complicating the measurement apparatus. The intermediary stores and manages deployment factors, making them accessible when needed.
2Measurement precision
If deployment factors are considered in bandwidth estimation, then estimation precision improves, but the complexity of the measurement system increases
Solution Approach 1:
The patent applies self-service by enabling the measurement system to automatically collect, store, and retrieve deployment factor data without manual intervention. The system serves itself by maintaining its own database of deployment information and using it autonomously during estimation processes, improving precision while minimizing the operational complexity for users.
Solution Approach 2:
The patent changes the parameters of the measurement system by incorporating additional data parameters (deployment factors) into the estimation process. Rather than adding complex hardware, the system modifies the informational parameters it processes, allowing improved precision through software-based parameter enhancement rather than hardware complexity.
3Productivity
If advanced protocols (VDSL2, G.fast) are used on shorter lines, then achievable bandwidth increases, but the impact of deployment factors on bandwidth estimation becomes more significant
Solution Approach 1:
The patent applies preliminary action by pre-identifying and storing deployment factor data specific to advanced protocols and short-line configurations. Before performing estimation, the system retrieves protocol-specific deployment factors from its database, ensuring that the high-bandwidth scenarios of VDSL2 and G.fast are accurately evaluated with appropriate deployment considerations already in place.
Solution Approach 2:
The patent applies local quality by tailoring the deployment factors and estimation parameters to specific local conditions - different protocol types (VDSL2, G.fast), different line lengths, and specific modem configurations. Rather than using a generic estimation approach, the system selects and applies locally-appropriate deployment factors that match the specific protocol and line characteristics, improving precision for high-bandwidth applications.
Data Source
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AI summary
An access network including twisted metallic pair connection to transmit data, including an access network modem connected to the twisted metallic pair connection and a broadband speed estimation tool including a web server and a line length, further deployment factors and speed determiner module. The web server to receive a deployment indication identifying a twisted metallic pair connection, an expected type of deployment and a type of DSL protocol of transmission. The line length, further deployment factors and speed determiner module is operable to determine, from the identification of the twisted metallic pair and the type of DSL protocol, an estimate of the length of the twisted metallic pair and, from the expected type of deployment, associated deployment factors, an estimated potential achievable data rate at which the DSL protocol can transmit data over the twisted metallic pair in dependence upon the determined estimate of the length and in dependence upon the determined associated deployment factors and the type of DSL protocol. The access network comprises a line management subsystem which determines an appropriate value for each configuration parameters in dependence upon the estimated data rate and causes the modem to operate in accordance with the determined values of the configuration parameters.