We first noticed 802.11ah WiFI LPWAN standard operating at 900 MHz for the Internet of Things in 2014, followed by Newracom NRC6101 chip in 2015, and the following year the Wi-Fi Alliance decided to call the new standard “Wi-Fi HaLow“. I was expecting it to compete with the likes of LoRa and NB-IoT, but I have not heard much about it, and when I asked a WiFi module and board supplier earlier this year, they seemed surprised I would even be interested in this type of hardware and, obviously, did not have any… So it’s good to see some new hardware coming out.
- 802.11ah Halow connectivity
- Silex SX-NEWAH 802.11ah Module based on Newracom NRC7292 System-on-Chip (US only)
- Compliant with IEEE 802.11ah WiFi HaLow, operating in 902.0 ~ 928.0 MHz frequency
- +23dBm Transmit Power
- Up to 4Mbps data rate (Note that as usual with wireless connectivity this varies with the distance, so at 1 km range, it will be much lower, at around 150 Kbps)
- Range of up to 1 km
- Supports 1/2/4 MHz bandwidth
- MHF-1 / u.FL Antenna port
- Simultaneous GATT Server & Client
- FOTA Support
- Access point and station mode
- Security – OPEN, WPA2-PSK(AES), WPA3-OWE, WPA3-SAE
- FCC Certified
- Host interface – USB 2.0 via the mPCIe edge connector (and FTDI FT232H USB to SPI chip)
- Input Voltage – 3.3V
- Current – 0.1A Typical
- Dimensions – 50.95 x 30 x 3.5 (mini PCIe form factor)
- Weight – 6.2 grams
- Temperature Range – -40°C to +85°C
- Humidity (non-condensing) – 20% to 90%
Gateworks provides Linux kernel drivers for FT232H USB to SPI bridge and the NRC7292 SPI radio chip. as well as required firmware file, and a userspace client app to configure the NTC7292. All those are already integrated into the Ubuntu 20.04 image for Venice and Newport ports, but the company asked customers to contact them for Ventana SBCs’ support.
The NRC7292 SoC is designed for many of the same applications as other LPWAN standards including IoT applications, wearables, industrial automation, Smart Agriculture, healthcare, safety & security, the Smart Grid, etc.. but also “multimedia streaming” thanks to the higher 4 Mbps (mPCie card specs) or 15 Mbps (chip specs) bitrate.
Gateworks also published a blog post about W-iFi HaLow that includes the chart above comparing various wireless standards. Based on this chart, we can see the battery life is similar to Bluetooth and Zigbee, but apparently much better than LoRa and Sigfox, but HaLow has much better Tx & Rx efficiency, while Sigfox and LoRa shine in terms of range (up to 10km+). The information provided in the chart should probably be taken with a grain of salt, as it shows standard WiFi battery life similar or even better than Sifgox or LoRa. It might be possible to achieve those results under specific, atypical conditions (e.g. always on radio with Tx or Rx), but there’s a reason why we don’t see WiFi devices with 10-year battery life…
Gateworks GW16146 WiFi HaLow mini PCIe module is available now at an undisclosed price. Note it does not come with an antenna which needs to be purchase separately togerther with an SMA to u.FL cable. Additional information can be found on the product page.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.