Wi-Fi Deferral for Narrowband Signals Experiment Report
Explore the results of an experiment involving a continuous narrowband signal provided to a Wi-Fi access point, leading to the AP deferring based on energy detection. The study showcases the impact of the continuous wave (CW) signal on Wi-Fi behavior, providing insights into signal interference and deferral mechanisms in wireless communication.
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Presentation Transcript
March 2023 doc: IEEE 802.11-23/455r0 Wi-Fi deferral for NB signals Author: Name Affiliation Address Phone Email Utrecht, +31-65-183- 6231 mwentink qti.qualcomm.com Menzo Wentink Qualcomm The Netherlands Utrecht, The Netherlands Richard van Nee Qualcomm Slide 1 Submission Menzo Wentink, Qualcomm
March 2023 doc: IEEE 802.11-23/455r0 Introduction These slides describe a cabled experiment in which a continuous NB signal is provided to a Wi-Fi access point at -62 dBm/20 MHz the NB signal is a continuous wave (CW) signal tuned in the primary channel of the AP the AP has its primary channel at center frequency 5 300 MHz the CW signal is tuned at 5 305 MHz the test setup is similar to the setup used for ETSI ED testing, cabled The expectation is that the Wi-Fi AP defers for the NB signal based on its energy detect (ED) CCA Slide 2 Submission Menzo Wentink, Qualcomm
March 2023 doc: IEEE 802.11-23/455r0 Test results The CW signal starts here The Wi-Fi AP defers for the CW signal This level is the spectrum analyzer s noise floor, which depends on resolution bandwidth and cable attenuation. The CW signal itself is not visible in this setup Slide 3 Submission Menzo Wentink, Qualcomm
March 2023 doc: IEEE 802.11-23/455r0 Conclusion The Wi-Fi AP defers for the NB signal (continuous CW) that is present at its antenna connector at -62 dBm/20 MHz Slide 4 Submission Menzo Wentink, Qualcomm
March 2023 doc: IEEE 802.11-23/455r0 References 11-22-1578-01-0wng-coexistence-of-narrowband-frequency-hopping-nb-fh- systems-and-wi-fi 11-22-0998-01-0wng-clear-channel-assessment-cca-behavior-of-commerical-wi- fi-equipment Slide 5 Submission Menzo Wentink, Qualcomm
