Wi-Fi Diagnostic Method Using Modulation Rate Packet Analysis
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Solution Overview
Problem
Wi-Fi connectivity issues in residential networks are challenging to diagnose due to interference from neighboring devices, distance-related signal loss, and complex building topologies, making it difficult for users and service providers to identify and resolve performance problems without specialized equipment.
Innovation Solution
A method involving sending packets with varying modulation rates from a station to an access point, measuring round trip times, and calculating performance values to diagnose issues such as range limitations or interference, using a mobile device to collect data at different locations and providing a performance class classification for troubleshooting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized test equipment is used to diagnose Wi-Fi issues, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent creates a virtual copy of professional diagnostic functionality within a mobile device application. The app replicates the capabilities of expensive specialized equipment by using the mobile device's existing hardware (wireless interface, processor, display) to perform packet transmission, round trip time measurement, and performance analysis, making professional-grade diagnostics accessible to ordinary users without requiring actual specialized equipment
Solution Approach 2:
The system enables users to perform self-diagnosis of Wi-Fi issues using their own mobile devices. The application autonomously transmits test packets, measures performance metrics, analyzes results, and provides diagnostic recommendations without requiring external specialized equipment or expert intervention, allowing users to service their own networks
2Measurement precision
If multiple packets with different modulation rates are sent to measure round trip time, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The application implements intelligent packet transmission strategies where it sends packets at multiple modulation rates but adapts the number and sequence of transmissions based on initial results. If performance is adequate at lower rates, the system may reduce the number of test packets or skip certain modulation rates, providing sufficient diagnostic information without always performing the complete maximum set of measurements, thus balancing precision with time efficiency
Data Source
AI summary
The application relates to a “wireless communication network including a station and an access point” which is in particular a Wi-Fi network according to the IEEE 802.11 standards. Internet service providers are searching for ways to get a better understanding of the end-user's wireless environment including link quality and performance. The proposed method calculates a performance value based on measured round trip times which are sent at different modulation rates. Based the change of performance in dependence of the modulation rate conclusions about the possible source of performance problems can be drawn, in particular it can be distinguished between (Bluetooth) interference and distance between station and access point being too large.