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nexmonster / nexmon_csi

Channel State Information for Raspberry Pi. Use the pi-5.10.92 branch.
https://github.com/nexmonster/nexmon_csi/tree/pi-5.10.92
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Use nexmon_csi extrator to monitor people behavior #57

Open crownsu opened 1 year ago

crownsu commented 1 year ago

I read the paper "Human Activity Recognition Using CSI Information with Nexmon" to know the nexmon_csi extrator can help to monitor human behavior instead tranditional CCTV. I study the from "https://github.com/nexmonster/nexmon_csi/tree/pi-5.10.92" and successfully dump the csi frame on my Pi 4 according the indication. Here I have a question that if we want to analyze csi data to determine the human behavior , it;s necessay to make a continoue data transmittion and receiveing traffic on air . But once we turn the Pi4 wlan0 into monitor mode , it won't be able to link another wifi AP or other wifi devices. How can we create a traffic on air and make sure Pi4 csi collectied data is by the targeted area wifi signal ? What's the correct connectivity and necessary related devices in a room where we want to monitor ?

Thanks Crown

zeroby0 commented 1 year ago

I connect the Pi to a WiFi router with Ethernet, and connect my laptop to the router with WiFi. Then I run iperf3 server on the Pi and iperf3 client on my laptop to generate wireless traffic between my laptop and the router.

crownsu commented 1 year ago

I connect the Pi to a WiFi router with Ethernet, and connect my laptop to the router with WiFi. Then I run iperf3 server on the Pi and iperf3 client on my laptop to generate wireless traffic between my laptop and the router.

OK ! should I set the IP following nexmon source 10.10.10.10 and destination 255.255.255.255 in pi and laptop ? Or just use the IP in the same LAN mask to be workable ?

zeroby0 commented 1 year ago

You should use the IPs that the router displays on it's settings page

crownsu commented 11 months ago

You should use the IPs that the router displays on it's settings page

You should use the IPs that the router displays on it's settings page

I link my pi to a wifi router via ehternet like you suggested and set an ip camera link to router via wireless then use my pi to watch the camera . Then following nexmon csi capturing method to create a 1,000 frames wifi data under .pcap , finally I extract into .csv file . But it's strange that I can not find my camera MAC address from the table of CSV file . All the source MAC in this table are not anyone of the devices I used including router , ip camera wire and wireless MACs . I can't filter the source before I nevigate the CSI data variance ~ Is anything wrong ? looking forward to hear some comments and thanks so much !