Running multiple radios close together

Hardware
1

Hi @james.haggerty @BiaoWang ,

Thanks for your input.

Also can you please suggest if we can run two HaLow radios simultaneously on the same evaluation boards?
We understand this isn’t a common topology, but wanted to confirm whether it’s supported and, if so, what’s needed on our end.

TIA

Driver build fails on IEEE80211_CHAN_IGNORE
2

No, it is not supported by the Linux driver (and even if it was, they’re likely to interfere with each other).

Ok, strictly speaking, you can run them in separate VMs via USB passthrough. I’m assuming you don’t want this.

3

Hi @james.haggerty ,

Just wanted to confirm whether we have previously observed any issues when operating two HaLow links simultaneously on different channels while the modules are physically close to each other (10-20meters apart).

For example, :

  • HaLow Link 1: 915 MHz
  • HaLow Link 2: 925 MHz

Even though the links are configured on different frequencies, we observed some interference and a reduction in link performance.

Could this be due to adjacent-channel interference? Also, is there a recommended minimum frequency separation or physical distance between two HaLow modules when multiple links are operating simultaneously in the same area?

This is particularly important for our use case, as we expect to have multiple HaLow links operating simultaneously within the same premises.

Looking forward to your input.

Thanks,
Arti