Gateworks GW16146 is an 802.11ah WiFi HaLow Mini PCIe module

Gateworks GW16146 is an 802.11ah WiFi HaLow Mini PCIe card designed to provide long-range wireless to IoT applications utilizing the company’s Venice and Newport single board computers.

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.

GW16146v3 802.11ah WiFi Halow mPCIe moduleGateworks GW16146 specifications:

  • 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.

Halow vs LoRaWAN vs Sigfox
HaLow vs Bluetooth vs Sigfox vs 802.15.4 vs WiFi vs LoRa

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.

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6 Comments
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willy
willy
1 month ago

It’s nice to see a comparison with other technologies. I thought LoRa and friends were good for battery life. Maybe only when sending short data and not for large blocks in fact.

JJJ
JJJ
1 month ago

Yes, I suspect that this is for large transfers only. But there is another issue; LoRa modulation is relatively slow so large transmissions over long distances can consume a lot of airtime and creep up on legal maximums for the 900MHz ISM band. I don’t know what sort of modulation this uses, but it could be a lot faster than LoRa meaning that the range is worse (as shown in the diagram), but the airtime per packet is much smaller too.

Marcin Dąbrowski
1 month ago

What I do not see mentioned with HaLow is latency, or how many devices can be on the same network. Regular Wi-Fi excels at these, but is too inefficient, what about HaLow, then?

Blake Johnson
Blake Johnson
29 days ago

HaLow can support up to 8191 nodes / clients / stations. Latency is considered low, but I don’t have exact numbers. Perhaps some can be found through searching google.

Marcin Dąbrowski
26 days ago

It does not know either. Where did you get that number? Are those multiplexed or simultaneous connections?

Jack
Jack
28 days ago

Jean, I wish this was true. 4mbps is the max speed when the devices are close, at 1 km the speed is 150 kbps, fix the article

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