Feedback Modification for WiFi Roaming Packet Loss
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Solution Overview
Problem
Roaming in WiFi networks often results in dropped packets due to device switching, leading to incorrect assumptions of network congestion and subsequent reduction in data quality, which can be improved by modifying feedback information to the source device.
Innovation Solution
A system and method that involves receiving feedback information from a receiving device, modifying it to account for roaming events, and transmitting the modified information back to the source device to prevent unnecessary reductions in data quality or quantity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback information is transmitted accurately to reflect packet loss, then network reliability is improved, but data quality deteriorates due to unnecessary reductions in transmission
Solution Approach 1:
The patent introduces a feedback modification mechanism that acts as an intermediary between the receiving device and source device. This intermediary layer detects when packet loss is caused by roaming events and modifies the feedback information accordingly, preventing the source device from incorrectly reducing transmission quality. The modification resolves the contradiction by filtering out false congestion signals while maintaining accurate feedback for genuine network issues.
2Measurement precision
If packet loss feedback is reported to source device, then measurement precision is improved, but productivity deteriorates due to reduced data transmission
Solution Approach 1:
Instead of reporting all packet loss events as congestion indicators, the patent inverts the approach by detecting roaming events and suppressing feedback for those specific cases. The system identifies when packet loss is due to device switching rather than network congestion, and selectively modifies feedback to prevent unnecessary transmission reductions. This inversion resolves the contradiction by maintaining precise measurement of genuine congestion while eliminating false positives that harm productivity.
3Ease of operation
If feedback information is modified to prevent quality reduction, then ease of operation is improved, but loss of information increases due to modified feedback data
Solution Approach 1:
The patent applies local quality modification by selectively altering feedback information only for packets lost during roaming events, while preserving accurate feedback for other packet loss causes. The system identifies the specific context (roaming vs. congestion) and applies different feedback strategies accordingly. This localized approach resolves the contradiction by maintaining operational ease during roaming while preserving information accuracy for genuine network issues.
Data Source
AI summary
A non-transitory computer readable medium includes instructions which, when executed by one or more processors cause performance of operations, including: receiving feedback information related to a receipt of packets by a receiving device, the packets being transmitted by a source device, modifying the feedback information to obtain modified information related to the receipt of the packets by the receiving device, and transmitting, to the source device, the modified information related to the receipt of the packets by the receiving device.