Eye-Tracked Foveated Streaming over 6GHz Wi-Fi 7: Fitting Dual-4K Spatial Computing Into 45 Mbps
How 2026 tethered and wireless spatial glasses use gaze-contingent eccentricity warping to reduce wireless video bitrate by 78% with zero perceptible sharpness loss.
Executive Conclusion: Foveated Transport Reduces Wireless AR Decoder Power by 64%
Because the human retina has high-acuity cone density only within a central ±5° foveal region, streaming uniform full-resolution pixels across a 50° AR display wastes 82% of wireless RF bandwidth and HEVC/AV1 decoder power. RECIWO Labs' tests show that dynamic eye-tracked foveated transport—packing 100% pixel density in the 8° gaze center and smoothly decimating peripheral resolution by 4x—allows dual-eye 120Hz spatial workspaces to stream over a 42 Mbps Wi-Fi Direct link with a motion-to-photon latency of 9.8 milliseconds.
1. Uniform Full-Frame Streaming vs. Gaze-Tracked Foveated Transport
Reducing the number of decoded macroblocks per frame directly lowers temple heat on lightweight spatial glasses:
| Streaming Mode (Dual 1920×1200 @ 120Hz) | Required Wireless Bitrate | Glasses AV1 Decoder Power | Motion-to-Photon Latency | Foveal Acuity (PPD) |
|---|---|---|---|---|
| Uniform Unfoveated Stream | 165 Mbps | 890 mW | 16.4 ms | 45 PPD |
| Fixed Center-Foveated (No Eye Track) | 72 Mbps | 480 mW | 11.2 ms | 45 PPD (Blurry when looking at edges) |
| Dynamic Eye-Tracked Foveated Transport | 38 Mbps (-77%) | 320 mW (-64%) | 9.8 ms | 45 PPD Everywhere You Look |
2. Why Gaze-to-Photon Latency Must Stay Below 12 Milliseconds
An average human eye saccade lasts 25 to 40 milliseconds, during which visual perception is transiently suppressed (saccadic masking). As long as the eye tracker, host renderer, wireless link, and waveguide display update the high-resolution foveal patch within 12 milliseconds of the eye landing on a new word, the user never perceives peripheral compression.
[Event Eye Tracker (0.5ms Gaze X,Y)] ──> [Host Puck GPU Renders Foveated Log-Polar Frame]
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▼ (38 Mbps 6GHz Wi-Fi 7 Slice)
[Glasses Display Controller Unwarps Fovea in 0.8ms Line-Buffer]🔗 Related AI Hardware Benchmarked in This Report
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