Packet Analysis for Wireless Base Station Identification
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Solution Overview
Problem
Conventional methods for analyzing wireless LAN communication quality in wired sections cannot determine whether wireless LAN terminals connected to the same access point are experiencing communication quality deterioration, making it difficult to identify the cause of the issue.
Innovation Solution
A packet analysis method and apparatus that capture and analyze packet groups in a wired network to detect non-communication periods and determine if multiple wireless communication apparatuses are connected to the same wireless base station by calculating the overlap between these periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If packet capture is performed in wired section only, then communication quality analysis can be conducted, but the connected access point information cannot be identified
Solution Approach 1:
The patent uses non-communication periods as an intermediary indicator to indirectly identify access point connections. Since packets in wired sections don't contain direct access point information, the invention captures wireless packets at the access point level, extracts non-communication period characteristics, and uses these as a mediator to determine which wireless terminals are connected to the same access point, thereby resolving the information loss problem.
2Reliability
If conventional packet analysis is used, then communication deterioration can be detected, but the cause (access point vs terminal) cannot be determined
Solution Approach 1:
The patent implements a feedback mechanism by comparing non-communication period overlaps between different wireless terminals. When communication deterioration is detected, the system analyzes the overlap patterns of non-communication periods to provide feedback on whether multiple terminals are connected to the same access point, enabling efficient cause identification without requiring time-consuming individual terminal inspections.
Solution Approach 2:
The invention replaces the mechanical approach of manually inspecting each wireless terminal with an automated packet analysis system. By capturing and analyzing packet timing characteristics in the wired section and computing non-communication period overlaps, the system automatically substitutes human inspection with computational analysis, significantly improving productivity in cause identification.
3Reliability
If multiple wireless terminals are inspected individually, then communication quality can be monitored, but time consumption increases
Solution Approach 1:
The patent merges the inspection process by analyzing multiple wireless terminals simultaneously through a single packet capture operation in the wired section. By extracting non-communication period information from captured packets and computing overlaps across multiple terminals in parallel, the system combines what would otherwise require sequential individual inspections into a unified analysis process, dramatically reducing time consumption while maintaining monitoring reliability.
Data Source
AI summary
A computer obtains a first packet group transmitted wirelessly by a first wireless communication apparatus and a second packet group transmitted wirelessly by a second wireless communication apparatus. The computer then detects a first non-communication period, during which there are no packets transmitted by the first wireless communication apparatus for a prescribed time or longer, and also detects a second non-communication period, during which there are no packets transmitted by the second wireless communication apparatus for the prescribed time or longer. The computer then determines based on an overlap between the first and second non-communication periods whether the first and second wireless communication apparatuses are connected to the same wireless base station.