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I'm very new to wireless networking and IoT. I'm trying to understand how different wireless technologies communicate or coexist, especially when they operate in similar or overlapping frequency bands.

While reading, I came across the idea of CTC (cross-technology communication), and I saw that there are various mechanisms that allow technologies like Zigbee, BLE, LoRa, and traditional Wi-Fi to detect or communicate with each other to avoid interference.

But when I started looking into Wi-Fi HaLow (802.11ah), I couldn't find any mention of CTC or similar coexistence mechanisms. It seems like HaLow doesn't use CTC at all.

So my question is, why doesn’t Wi-Fi HaLow use CTC like other wireless standards? Is there a technical reason, or something about how HaLow is designed or the spectrum it uses that makes CTC unnecessary?

Again, I'm still learning, so I really appreciate any beginner-friendly explanations or pointers to where I can read more.

Rohit Gupta
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Juanma
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1 Answers1

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Zigbee, BLE, WiFi all work on the 2.4Ghz band.

HaLow uses frequencies around the 900MHz band.

They can’t interfere with one another so there’s no need for CTC.

romkey
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