The Weightless SIG, which develops Internet of Things standards for long distance, low cost machine to machine connections, has announced a new parter with NWave technologies joining the group as a technology vendor. Weightless has already picked up some serious backers, including ARM, CSR, and Cable & Wireless.
The IEEE standards group has developed a couple of White Space standards that promise better range. Those include the 802.11af standard, based on Wi-Fi like protocols, for ranges up to 5 km. Additionally, the 802.22 standard, based on WiMax chipsets which incorporate polling, are designed for wireless regional area networks with ranges up to 100 km. But both of those standards appear to be targeting broadband connections.
The Weightless standards, by contrast, delivers a slower, narrow-band solution that connects to more devices and requires very little power. It may even be used on licensed cellular frequencies.
The Weightless standard aims to connect sensors that require long range connections and is targeting applications like vehicles and asset tracking, healthcare and metering.
While improved coverage can be supplied by cellular technology using GPRS, 3G and LTE, cellular costs are high, using more power and bandwidth than desirable. The Weightless SIG uses television white spaces and the lower unlicensed ISM band (800-900 MHz) for improved range using a slower but error-resistant data scheme.
Weightless uses a spreading algorithm to create a longer data sequence when the signal levels are weak. It reduces the data rate and shifts to a simpler modulation scheme to reduce the error rate or increase range. It enables coverage up to 5km (3 miles) to indoor terminals.
The Weightless SIG announced the development of the Weightless-W standard, which uses TV white spaces, last year. This year the the Weightless-N standard, using the unlicensed 800/900 MHz ISM band was announced. It uses Ultra Narrow Band (UNB) technology and operates in ISM band – 868MHz in Europe and 915MHz in the US, and may also use cellular frequencies around 800 MHz.
Professor William Webb, CEO of the Weightless SIG said, “We are delighted to welcome NWave Technologies Limited to the Weightless SIG. NWave is a leader in IoT over ISM spectrum and the company’s deep technical experience in LPWAN connectivity will make a significant contribution to the rapid development of Weightless-N. Bringing proven capability from an existing technology provider to the SIG and merging it with the expertise already established within the group will accelerate the development of Weightless-N as the leading global open standard for machine connectivity over licence exempt spectrum.”