Thursday, January 3, 2019

HaLow for IoT Connections?

Some in the industry are in favor of HaLow (IEEE 802.11ah), a version of Wi-Fi envisioned as a connectivity mechanism for internet of things sensors, where other connections such as LoRa,  LTE-M, Wi-Fi, WiGig or Sigfox might be considered.

The big attraction is operation in the unlicensed 900-MHz bands, also used by cordless phones, that penetrate walls far more easily than higher-frequency Wi-Fi (2.4 GHz and 5 GHz), and offer better reach (distance) as well.



Supporters tout HaLow’s range--nearly twice that of today’s Wi-Fi--but also more robust connections in challenging environments where the ability to more easily penetrate walls or other barriers is mportant.

The standard sports narrow channel widths of 1 and 2 MHz. One advantage over longer-range LoRa are potential data rates.

LoRa data rates are in the couple of kilobits per second range.  HaLow data rates can range from 150 kbps up to 70 Mbps.  

HaLow should deliver at least 160 Kbps over at least 100 meters and longer with line of sight, supporters say.

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