Abstract
WiFi scanning causes the radio to go off-channel to scan for other channels in the WiFi band. This results in excessive latency or breakage in connectivity for latency sensitive applications. This disclosure describes techniques that leverage the target wake time (TWT) feature of WiFi to reduce or eliminate latency or breakages in connectivity arising from scanning. Prior to running a scan, the device sets up a TWT session. Parameters of the TWT session such as service period, session interval, etc. are selected according to the latency requirements of the device. Uninterrupted scans are performed using the main core of the WiFi chipset during idle periods, while scanning ceases during active periods. Applications with differing latency requirements can be accommodated. Scanning behavior is made universal, independent of chipset type, make, or model.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
ElArabawy, Ahmed, "Using Target Wake Time to Mitigate the Effects of Scanning on Latency in WiFi", Technical Disclosure Commons, (April 02, 2024)
https://www.tdcommons.org/dpubs_series/6839