UMass Amherst introduces ‘Braidio’ technology, lets mobile devices share power
In a paper presented Aug. 25 at the Association for Computing Machinery’s special interest group on data communication (SIGCOMM) conference in Florianópolis, Brazil, a team of computer science researchers at the University of Massachusetts Amherst led by professor Deepak Ganesan introduced a new radio technology that allows small mobile devices to take advantage of battery power in larger devices nearby for communication.
Ganesan and his graduate students in the College of Information and Computer Sciences, Pan Hu, Pengyu Zhang and Mohammad Rostami, designed and are testing a prototype radio that could help to extend the life of batteries in small, mass-market mobile devices such as fitness trackers and smartwatches. They hope using “energy offload” techniques may help to make these devices smaller and lighter in the future.
Ganesan and colleagues have dubbed the new technology Braidio for “braid of radios,” and say it can extend battery life hundreds of times in some cases.
As he explains, battery size in portable devices is proportional to the device size. The larger the device, the larger its battery; a laptop battery is roughly a thousand times larger than one in a fitness tracker, a hundred times larger than in a smartwatch, and 10 times larger than in a cell phone. However, these devices can’t take advantage of the differences. For example, Ganesan says, “the battery on your smart watch cannot survive longer by taking advantage of the higher battery level on your smartphone.”
“We take for granted the ability to offload storage and computation from our relatively limited personal computers to the resource-rich cloud,” he adds. “In the same vein, it makes sense that devices should also be able to offload how much power they consume for communication to devices that have more energy.”
In the paper presented at the conference, to be published in the conference proceedings, the researchers show that they have made strides toward fixing this problem, designing a radio that has the ability to offload energy to larger devices nearby and, in effect, making both device size and battery consumption proportional to the size of battery.
To achieve this, they embellished Bluetooth, a commonly-used radio technology, with the ability to operate in a similar manner to radio-frequency identification (RFID), which operates asymmetrically. That is, a reader does most of the work and pays the majority of the energy cost of communication, while a tag, typically embedded in a smaller device or object, is extremely power-efficient.
Braidio operates like a standard Bluetooth radio when a device has sufficient energy, but operates like RFID when energy is low, offloading energy use to a device with a larger battery when needed. So, when a smartwatch and smartphone are equipped with Braidios, they can work together to proportionally share the energy consumed for communication, they explain.
Hu says their Braidio test results show that when a device with a small battery is transmitting to a device with large battery, Braidio can offer roughly 400 times longer battery life than Bluetooth, since the smaller device’s battery is preserved longer.
“To be clear, our results only cover the cost of communication or transmitting data,” Hu adds. “If a radio is transmitting from a camera that consumes hundreds of milliwatts while using its sensor, clearly the sensors may dominate total power consumption and reduce the benefits of optimizing the radio.”
The team designed Braidio’s radio frequency front end so that it could operate in different modes while consuming power comparable to a Bluetooth radio and using simple, low-cost components. They also designed algorithms that monitor the channel and energy at the transmitter and receiver and switch dynamically between modes to accomplish power-proportional communication without sacrificing throughput. With further optimization, the researchers believe Braidio or similar radios can be made smaller and more efficient for mass-market needs.
Ganesan says that technologies like Braidio open up a new way of thinking about the design of mobile and wearable devices. “Wearable devices are often bulky due to large batteries needed for adequate battery life,” he says. “Perhaps such energy offload techniques can reverse this trend and enable thinner and lighter devices.”
Learn more: Extending Battery Life for Mobile Devices
The Latest on: Energy offload
via Google News
The Latest on: Energy offload
Hurricane Energy Starts Up Lancaster Field
on May 13, 2019 at 5:39 am
British oil and gas company Hurricane Energy started up its Lancaster field west of ... Hurricane's floating production, storage and offloading (FPSO) vessel was connected to the group's North Sea ... […]
Hurricane Energy starts up Scottish oilfield
on May 13, 2019 at 2:46 am
LONDON (Reuters) - British oil and gas company Hurricane Energy started up its Lancaster ... Hurricane’s floating production, storage and offloading (FPSO) vessel was connected to the group ... […]
ENERGY: Energean makes fresh offer to build Israeli gas pipeline to Cyprus
on May 10, 2019 at 8:28 am
Energean said it would establish competition in the Cypriot energy market as a whole ... and take Aphrodite gas by pipeline to the FPSO (Floating Production Storage and Offloading facility) it ... […]
VAALCO Energy, Inc. Announces First Quarter 2019 Results And Plan to Seek Dual Listing of Its Common Stock on the London Stock Exchange
on May 8, 2019 at 5:06 pm
HOUSTON, May 08, 2019 (GLOBE NEWSWIRE) -- VAALCO Energy, Inc. (NYSE:EGY ... 200 BOPD due to a third-party work stoppage on the Floating Production, Storage and Offloading vessel ("FPSO"); Reported Net ... […]
SSE blames competition in energy sector as it cuts 444 jobs
on May 8, 2019 at 5:02 am
Plans to offload it through a merger with rival Npower fell apart in December, however, when the companies failed to reach a deal to provide financial support to the new company. SSE lost 460,000 ... […]
Life after offloading $80m sass & bide juggernaut
on May 3, 2019 at 12:00 am
Fashion designer Heidi Middleton at home in Palm Beach, Sydney. Picture: Justin Lloyd. “I didn’t want to start a new venture until I had that real energy and sense of it being right,” says the mother ... […]
SSE sparks new merger talks over £1bn energy retail arm
on April 27, 2019 at 7:20 am
Sky News has learnt that SSE - formerly known as Scottish & Southern Energy - has held preliminary talks with a number of other utility providers, including TalkTalk, in recent weeks. SSE has promised ... […]
Here's Why You Should Offload MPLX Stock from Your Portfolio
on April 10, 2019 at 1:07 pm
MPLX LP MPLX has lost 6.2% in the past six months, and the unfavourable trend is likely to continue as the midstream energy partnership has witnessed several negative traits and downward revisions ... […]
Albania looks to offload old MiG jets for Dh41,000 each
on April 1, 2019 at 8:45 pm
Almost all of Albania's power comes from the hydro plants. Mining, manufacturing, energy and water helped GDP to expand in the fourth quarter, contributing 1.11 percentage points to growth, the ... […]
Energy firms are offloading 'dumb' smart meters: make sure you don't get stuck with one
on March 16, 2019 at 2:31 am
Households will still receive smart meters that cease to work after a change of energy supplier despite a crucial deadline on installations having passed, Telegraph Money has learned. Consumers have ... […]
via Bing News