Preemptive Transceiver PHY Configuration for Deterministic Wi-Fi Traffic
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Solution Overview
Problem
Existing Wi-Fi deterministic traffic methods struggle to efficiently and reliably handle predictable data transmission due to interference and latency issues, particularly in environments requiring low latency and high reliability.
Innovation Solution
Preemptively configuring the physical layer (PHY) parameters of an access point (AP) based on anticipated uplink traffic using techniques like TB UL OFDMA, allowing the AP to adjust transceiver settings such as LNA gain, RX-SOP threshold, and channel state information before the actual data transmission, thereby optimizing signal processing and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Wi-Fi deterministic traffic methods are used to ensure predictable data transmission, then reliability is improved, but latency increases due to scheduling overhead and resource allocation delays
Solution Approach 1:
The patent applies preliminary action by pre-configuring PHY parameters (such as LNA gain, RX-SOP threshold, and channel state information) before the actual data transmission occurs. The access point stores PHY parameters determined from a first wireless frame and identifies a future time for upcoming transmissions, then configures the PHY in advance based on stored parameters. This pre-configuration eliminates real-time processing delays during critical transmission moments, thereby reducing latency while maintaining the reliability benefits of deterministic scheduling.
2Adaptability or versatility
If PHY parameters are configured in real-time based on incoming traffic, then adaptability is improved, but computational overhead increases
Solution Approach 1:
The patent reduces computational overhead by performing PHY parameter configuration in advance rather than in real-time. The access point stores PHY parameters determined when receiving a first wireless frame and uses these stored parameters to pre-configure the PHY for future transmissions. This approach maintains adaptability to different traffic conditions while significantly reducing the computational burden during active transmission periods.
Solution Approach 2:
The patent uses copying by storing PHY parameters from a first wireless frame reception and reusing these stored parameters for configuring the PHY in subsequent transmissions. Instead of recalculating all PHY parameters from scratch for each transmission event, the system copies and reuses previously determined parameters, thereby reducing computational overhead while maintaining appropriate parameter settings for similar traffic conditions.
3Measurement precision
If transceiver settings are adjusted dynamically for each transmission, then signal processing accuracy is improved, but processing time increases
Solution Approach 1:
The patent resolves this contradiction by pre-configuring transceiver settings before transmission occurs. The access point identifies a future time for upcoming transmissions and configures the PHY in advance based on stored parameters from previous frames. This ensures that accurate signal processing parameters are already in place when the transmission arrives, maintaining high detection accuracy without incurring real-time configuration delays.
Data Source
AI summary
The present disclosure provides techniques for preemptive transceiver PHY enhancements for deterministic traffic. A wireless device stores one or more physical layer (PHY) parameters determined when receiving a first wireless frame from a station (STA). The wireless device identifies a future time when the STA will transmit wireless data to the wireless device. Before the future time, the wireless device configures a PHY in the wireless device based on the one or more PHY parameters. The wireless device receives, using the configured PHY, a second wireless frame from the STA during the future time.