Mirrored Split Passive Scanning for Low-Latency Beacon Reception
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Solution Overview
Problem
Existing passive scanning techniques in wireless communication systems fail to meet the latency, throughput, and timing requirements of low-latency applications such as real-time gaming and augmented/virtual reality due to the inability to dynamically configure scanning parameters.
Innovation Solution
Configuring off-channel scan time and home channel dwell time for passive scanning operations to be within specified limits, allowing for efficient scanning of additional wireless channels while adhering to low-latency requirements, including alternating listening and dwelling periods to ensure complete beacon frame reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If passive scanning operations use traditional scanning parameters, then scanning can be performed, but latency, throughput, and timing requirements of low-latency applications cannot be met
Solution Approach 1:
The patent applies dynamics by making the scanning parameters adjustable and adaptive. The wireless communication device dynamically configures the off-channel scan time and home channel dwell time based on application requirements, allowing the scanning operation to adapt to different latency requirements of various applications.
Solution Approach 2:
The patent changes key parameters of the passive scanning operation, specifically the off-channel scan time and home channel dwell time. By adjusting these parameters, the system can meet the latency requirements of low-latency applications while still performing necessary channel scanning.
2Adaptability or versatility
If off-channel scan time is increased to scan more channels, then scanning coverage is improved, but latency requirements are violated
Solution Approach 1:
The patent applies partial action by performing only the necessary scanning within the constrained time window. The device configures the off-channel scan time to be less than or equal to the maximum off-channel scan duration, ensuring that scanning coverage is sufficient while staying within the time limits required by low-latency applications.
3Reliability
If home channel dwell time is increased to ensure complete beacon frame reception, then scanning reliability is improved, but scanning speed decreases
Solution Approach 1:
The patent uses periodic action by implementing alternating listening and dwelling periods within the scanning operation. The device alternates between listening for beacon frames on off-channels and dwelling on the home channel, creating a periodic pattern that ensures complete beacon frame reception while maintaining scanning speed through efficient time utilization.
Data Source
AI summary
This disclosure provides methods, devices, and systems for performing passive scanning operations on one or more wireless channels. In some implementations, a wireless communication device configures an off-channel scan time and a passive scanning period for passive scanning operations based on latency requirements of a low-latency application, and selects a home channel dwell time for the passive scanning operations. The wireless communication device may perform the passive scanning operation by alternating between listening for beacon frames on one or more second wireless channels for the configured off-channel scan time and dwelling on a home channel for the selected home channel dwell time during a first portion of the configured scanning period. The wireless communication device also may listen for beacon frames on the one or more second wireless channels during a second portion of the configured scanning period that is defined by the selected home channel dwell time.