November 2022 doc.: IEEE 802.11-14/xxxxr0 Support for

November 2022 doc.: IEEE 802.11-14/xxxxr0 Support for high-bandwidth and multi-Tx CFR capture Date: 2022-xx-xx Authors: Submission Slide L1 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 Introduction This submission briefly discusses: - The application of CFR - The pros of supporting high-bandwidth and Multi-tx CFR capture - How to overcome the challenges that may be introduced - Call for developing a uniform format and interface for CFR Submission Slide L2 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 The application of CFR CFR characterizes channel status information, which is crucial for reliable communication with high data rates in multi-antenna systems It can be used for multi-user scheduling, time/frequency/power resource allocation, pre-coded, rate adaption and network parameter optimizing Submission Slide L3 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 The application of CFR Also, its role in wlan sensing has attracted more research. It can sense the activity of target in given environment, so it will play important role in Smart home, Gesture recognition, Gaming control and Presence detection[1] Example application of WLAN sensing[3] Submission Slide L4 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 Need for high-bandwidth and Multi-tx CFR capture The existing open source driver only support 20MHZ/40MHZ/80MHZ bandwidth CFR capture basing on some fixed network cards 802.11be is adding 320MHZ bandwidth operating modes, the use of which can improve the accuracy and resolution of wlan sensing Also, STA(tx) is usually treated as a single antenna under many CFR capture mode. But CFR of SIMO can not reflect the true channel state Basing on CFR of MIMO system, we can get the maximum multiplexing and diversity gain of MIMO; Also wlan sensing will get great benefits from it Submission Slide L5 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 Need for high-bandwidth and Multi-tx CFR capture More antennas improve resolution and accuracy. Resolution and accuracy benefit localization[2] Submission Signal bandwidth VS the resolution of sensing[1] Slide L6 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 Challenges & Solution Higher bandwidth means more CFR of subcarriers should be capture; And more TX antennas also lead to an increase in CFR data. Challenges: Deterioration of the communication quality Take up more storage space Possible solution: Set priorities Compress CFR data(Lossy or lossless compression algorithms) Submission Slide L7 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 Summary CFR of high-bandwidth and multi-TX operation mode is important for improving communication performance and WLAN sensing. In order to further promote the application of CFR, the format and interface of CFR should be customized. Submission Slide L8 Lihua Zhu, Ruijie Networks Inc

November 2022 doc.: IEEE 802.11-14/xxxxr0 References [1] “IEEE 802-11-Overview-and-Amendments-Under-Development” 2022 July [2] “ArrayRrack: A Fine-Grained Indoor Location System” [3] “ An Overview on IEEE 802.11bf:WLAN sensing” Submission Slide L9 Lihua Zhu, Ruijie Networks Inc