To test out viability for sharing with neighbor, I did some WDS testing.
Used two OnHub ASUS, an old router that only supports up to AC.
Everything is specific on a given environment like how far away devices are, what physical blockers are between devices, and what other wifi signals are going on in the neighborhood
Short duration tests and a specific envrionment. Your results may be wildly different.
Findings:
If devices are farther apart with more obstacles, performance drops. Surprise!
If using the 2.4GHz, check the box that forces 40MHz.
Test setup
--- wired connection
>>> wifi connection
iperf3Server (rpi 4) ---- srouter >>> crouter---- iperf3Client (Ubuntu laptop)
a) wifi routers has 2.4GHz and 5GHz. The 2.4GHz is supposed to go through walls better. Thus, using 2.4GHz signal between houses may be better even though 5GHz standards are faster.
b) If 2.4GHz is used to go between houses, 5GHz can be sued within houses and thus the house-to-house traffic is not competing with traffic within a house
c) putting wifi access points close to wall near neighbor may produce better results
d) putting wifi nearer ceiling may produce better results, usually less stuff in the way
e) more antenna usually means more concurrent streams which means faster overall
used iperf3 for testing
initial test all wired, got 933Mbps
test setup
1) 5GHz (80Mhz width), 2ft apart, 337Mbps
2) 2.4Ghz (20Mhz width), 2ft apart, 77Mbps
3) 2.4Ghz (40Mhz width), 2ft apart, 187Mbps
4) 2.4Ghz (40Mhz width), 12ft apart, 170Mbps
5) 2.4Ghz (40Mhz width), 20ft apart (2 walls), 80Mbps
6) 2.4Ghz (40Mhz width), 40ft apart (3 walls), 55Mbps
Performance might not be good enough, any recommendations?