Switched Measurement Probe for Broadband Network Testing
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Solution Overview
Problem
Managing broadband network performance across multiple users is challenging due to high support costs and limited data accuracy from sparse network probes, especially in large-scale networks like fiber-to-the-premises or cable networks, where equipping every endpoint with measurement agents is prohibitively expensive.
Innovation Solution
A single measurement agent is installed at an aggregation point and cycled through multiple network segments using a switching device to perform detailed broadband measurement tests, connecting network termination devices to upstream and downstream paths, and sending packets to gather performance metrics such as transfer rates and traffic priority values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a measurement agent is installed at every network endpoint or aggregation point to obtain comprehensive network performance data, then measurement precision and data completeness are improved, but device complexity and cost increase prohibitively
Solution Approach 1:
A single measurement agent is designed to perform multiple functions by cycling through different network segments via switch port mapping. The agent can measure performance across multiple service groups sequentially, making one agent universal rather than requiring dedicated agents for each segment.
Solution Approach 2:
Multiple measurement functions that would traditionally require separate agents are merged into a single measurement agent. The agent combines the capabilities of measuring different service groups, upstream paths, and downstream paths in one unified system.
2Measurement precision
If multiple network probes are installed at aggregation points to test network components, then measurement precision is improved, but cost increases due to system acquisition and operational expenses
Solution Approach 1:
The measurement agent is designed as a universal probe that can serve multiple service groups by dynamically switching its measurement targets. This eliminates the need for multiple specialized probes, reducing both acquisition costs and operational expenses while maintaining comprehensive measurement coverage.
Solution Approach 2:
The measurement agent performs periodic measurements across different service groups by cycling through them in sequence. This time-based multiplexing allows a single agent to gather comprehensive data that would traditionally require multiple simultaneous probes.
3Measurement precision
If user endpoint test agents are installed to provide performance data, then measurement precision is improved, but ease of operation deteriorates due to support costs and configuration complexity
Solution Approach 1:
The measurement agent is positioned as an intermediary at the aggregation point rather than at user endpoints. This intermediary role allows the system to collect endpoint performance data indirectly through controlled switch port mappings, eliminating the need for user-facing test agents and their associated support requirements.
Solution Approach 2:
The system performs self-service measurements by automatically cycling the measurement agent through different service groups and collecting performance data without requiring user intervention, endpoint configuration, or end-user support personnel.
Data Source
AI summary
A single measurement agent installed at an aggregation point in a network is cycled through multiple network segments (or service groups) using a switching device. Detailed broadband measurement tests are performed on each network segment.