Access Point Anomaly-Driven Packet and Spectrum Capture
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Solution Overview
Problem
Existing systems face challenges in timely and proactive detection of connectivity anomalies between client devices and access points, relying on manual recreation and interpretation of packet traces, which is tedious and reactive, and are vulnerable to low-level interoperability issues.
Innovation Solution
An access point proactively detects anomalies in packet traffic and radio frequency interference, performs packet and spectrum captures, and reports them automatically or upon request, using anomaly detectors and correlators to identify root causes and initiate corrective actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual recreation and interpretation of packet traces is used to detect connectivity anomalies, then experts can identify root causes, but the process is tedious, reactive, and incurs delay in timely response
Solution Approach 1:
The access point continuously monitors packet traffic and performs packet captures in advance, storing captured packets in a buffer before anomalies occur. When an anomaly is detected, the pre-captured packets are immediately available for analysis, eliminating the need for manual recreation and enabling timely automated response.
Solution Approach 2:
The system implements automated anomaly detection and packet capture functionality at the access point itself, eliminating dependence on manual expert intervention. The access point autonomously monitors traffic, detects anomalies using defined criteria, triggers captures, and reports findings, making the system self-sufficient and responsive.
2Productivity
If automated anomaly detection and packet capture is implemented at the access point, then timely and proactive detection is achieved, but device complexity increases
Solution Approach 1:
The anomaly detection functionality is divided into separate modular components: packet traffic monitor module, anomaly detector module, packet capture module, and reporter module. Each module performs a specific function independently, making the complex system manageable, maintainable, and scalable while enabling high-speed automated operation.
3Reliability
If continuous monitoring of packet traffic and radio frequency interference is performed, then connectivity issues are detected proactively, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the access point employs periodic sampling of packet traffic and radio frequency interference at defined intervals. This approach maintains adequate monitoring coverage for proactive anomaly detection while significantly reducing energy consumption compared to continuous operation, achieving a balance between reliability and power efficiency.
Data Source
AI summary
An access point providing a client device with access to a communication network detects an anomaly in packet traffic being transmitted to or received from the client device. In response, the access point performs a packet capture by triggering the release of stored packets. The access point determines an anomaly type representing a root cause of the anomaly and annotates the packet capture with the anomaly type. The access point also detects radio frequency interference exceeding a prescribed threshold and, in response, performs a spectrum capture. The packet capture, annotated with the anomaly type, and the spectrum capture are reported either automatically or in response to a request.