Protocol doesn’t require new hardware; works with existing devices
A group of researchers led by a BYU computer engineering professor has created a protocol that significantly extends the distance a Wi-Fi-enabled device can send and receive signals.
The engineering innovation requires no new hardware to enhance the signal range for “internet of things” devices, like a door sensor or motion detector, but can extend the distance these devices can be installed from a Wi-Fi access point by more than 60 meters, according to test results.
“That’s the really cool thing about this technology: it’s all done in software,” said Phil Lundrigan, assistant professor of computer engineering at BYU. “In theory, we could install this on almost any Wi-Fi enabled device with a simple software update.”
The new protocol is called On-Off Noise Power Communication and is programmed right on top of the existing Wi-Fi protocol using the same hardware. While Wi-Fi requires speeds of at least one megabit per second (1 Mbps) to maintain a signal, the “ONPC” protocol Lundrigan and his co-authors created can maintain a signal on as low as 1 bit per second — one millionth of the data speed required by Wi-Fi.
BEYOND WIFI; GOING FOR NOISE
To do so, Lundrigan, Neal Patwari of Washington University (in St. Louis) and Sneha Kasera of the University of Utah adjusted the transmitter in a Wi-Fi-enabled device to send wireless noise in addition to data. They programmed into the Wi-Fi sensor a series of 1s and 0s, essentially turning the signal on and off in a specific pattern. The Wi-Fi router was able to distinguish this pattern from the surrounding wireless noise (from computers, televisions and cell phones) and therefore know that the sensor was still transmitting something, even if the data wasn’t being received.
“If the access point (router) hears this code, it says, ‘OK, I know the sensor is still alive and trying to reach me, it’s just out of range,’” Patwari said. “It’s basically sending 1 bit of information that says it’s alive.”
But according to Lundrigan, 1 bit of information is sufficient for many Wi-Fi enabled devices that simply need an on/off message, such as a garage door sensor, an air quality monitor or even a sprinkler system. During their research, the authors successfully implemented their ONPC protocol, along with a cleverly named application to manage the protocol (“Stayin’ Alive”), ultimately extending the range of an off-the-shelf device 67 meters beyond the range of standard Wi-Fi.
The researchers made clear to point out that their ONPC protocol is not meant to replace Wi-Fi or even long-range wireless protocols like LoRa, but is meant to supplement Wi-Fi. Specifically, only when Stayin’ Alive detects that the Wi-Fi device has lost its connection, it starts transmitting data using ONPC.
That being said, authors believe the innovation could make LoRa even longer range or be used on top of other wireless technologies. “We can send and receive data regardless of what Wi-Fi is doing; all we need is the ability to transmit energy and then receive noise measurements,” Lundrigan said. “We could apply this to cellular or Bluetooth as well.”
The research was presented on October 22 at the International Conference on Mobile Computing and Networking in Los Cabos, Mexico. MobiCom is one of the premier computer engineering conferences, with an acceptance rate for papers usually under 20 percent, and closer to 15 percent this year.
Lundrigan runs the Network Enhanced Technologies Lab (NET) at BYU. NET is focused on building real systems that enhance and extend wireless networks, Internet of Things, security, privacy and reliability. Take a look at what they’re up to right now: https://netlab.byu.edu/projects/
The Latest on: Wi-Fi range
via Google News
The Latest on: Wi-Fi range
- The Rise of Buds: How Apple Sparked a Wireless Revolution on November 18, 2019 at 5:03 pm
Google's second-generation wireless earbuds are arguably the closest competitor to the AirPods in terms ... Microsoft's competitor has been met with largely positive reviews for sound quality and a ...
- Cree Lighting taps Synapse wireless tech for outdoor area and industrial SSL on November 18, 2019 at 4:13 pm
The range is about one mile. The wireless scheme relies on 128-bit AES security. The Site Controllers can communicate with a CMS (central management system) or a BMS (building management system) via ...
- L-com Introduces New GPS Timing Antennas and UHF Antenna to Address the Growing Mobile Wireless Market on November 18, 2019 at 4:10 pm
The new HG110TEL-BNC portable UHF antenna provides high performance in the UHF frequency range of 118-174 MHz, is field tunable and features a telescopic radiator and flexible support mast. "Our new ...
- This Wireless Carrier Is T’d Up for Growth on November 18, 2019 at 12:45 pm
In addition, wireless service revenue, AT&T's largest operating segment representing about ... It expects revenues to grow in the low-single digits and earnings per share to compound at a 9.2% growth ...
- Panasonic Launches Wireless Bluetooth™ Headphones For Entertainment Lovers on November 18, 2019 at 6:23 am
Clear Voice raises the low frequency range that is close to a person's voice while maintaining the bass impact, making movie dialogues easier to hear. The Default mode turns the equalizer off while ...
- Ford Mustang Mach-E Gets Official With 300 Mile Range, 459 Horsepower And $50K Base Price on November 18, 2019 at 5:09 am
which supports wireless Apple CarPlay and wireless Android Auto. Ford is accepting reservations now via the Mach-E reservation site for $500, which is refundable. The First Edition is offered in ...
- Galaxy A51: here's what we know about Samsung's mid range for 2020 on November 18, 2019 at 5:01 am
On Wi-Fi Alliance, a site which certifies devices for the WLAN standard ... Whilst the flagships have all ditched this feature by now, Samsung seems to be keeping it alive in its mid-range devices.
- Your AirPods can now be used to watch in-flight movies with this wireless headphone adaptor! on November 18, 2019 at 2:50 am
However, the biggest plus point for me is the fact that I get to use my AirPods to watch a movie the next time I’m jet setting on a vacation! AirFly Pro is compatible with a wide range of wireless ...
- How to set up WiFi Range Extender, Booster, and Repeater on November 17, 2019 at 5:52 am
If you have bought a WiFi Range Extender for your home or office, but do not know how to set it up, then you have come to the right place. We will show you how to set up a WiFi Range Extender so that ...
- The best Wi-Fi routers of 2019 on November 15, 2019 at 9:24 pm
It pretty much aced our performance tests, delivering the fastest top transfer speeds we've ever recorded, plus excellent range and low latency. It's usually priced at $350, but as the time this was ...
via Bing News