Wireless communication

Bluetooth (146)
Cellular network (28)
Long-term evolution (29)
Radio-frequency identification (71)
Wireless application protocol (7)
Wireless communication (574)

Synopsis: Domenii: Ict: Ict generale: Communication systems: Wireless communication:

The satellites it put into the space provide everything from high-resolution imagery to monitor the country's shrinking farmland, to cheaper wireless and internet coverage.

And in the US, Wireless Emergency Alerts from the Federal Emergency Management Agency now warn people of severe weather and other hazards

The cafes, kiosks and benches teem with young entrepreneurs who seem to survive on a diet of caffeine and wi-fi. Of Israel's 5, 000 tech companies,

#Why Bluetooth use is on the rise Bluetooth has been with us for around 15 years.

Named after Denmark's King Harald Bluetooth Blatand, who reigned in the 10th century AD, it is a technology that everyone is aware of on their computers and phones,

and predictable technology,#says Professor Roch Guerin, Chair of Computer science and Engineering at Washington University, St louis."Bluetooth targets lower transmission ranges and data rates than wi-fi,

Bluetooth Smart, launched in 2011, includes a smarter power management system that allows it to turn on,

As a result, machines using Bluetooth that previously ran for a few months on a coin cell battery,

"Bluetooth classic is for sending steady streams of voice and audio,#says Suke Jawanda, Chief Marketing Officer of the Bluetooth Special interest Group (SIG),

which owns and licenses Bluetooth technology.""Bluetooth Smart is about sending packets of bits and data to applications.#

#Life changinghealthcare is cited frequently as one area that hasn't witnessed the radical transformations underway elsewhere as a result of the ongoing digital mobile revolution.

The growth of novel personal medical sensing technologies, many of which use Bluetooth, could soon change this.

Earlier this year, a Silicon valley-based start-up called Scanadu sought to raise $100, 000 on the crowdfunding site Indiegogo.

This data is transmitted via Bluetooth to users'phones or tablets. With recent advances in technology such as Bluetooth, we are now able to build medical devices that weren't possible just a decade ago#.

#at an affordable price using existing infrastructure of smart phone telecoms#says Scanadu's CEO Walter de Brouwer."

which is sent wirelessly via Bluetooth to an Android app, can be forwarded automatically to doctors. Bluecell is still a few years from commercialisation."

"We chose Bluetooth because of its wide distribution in consumer devices, #says Jacopo Olivo, one of the researchers."

"It's an interesting way that Bluetooth can interact with the biotech industry.##Other personal health sensors that use Bluetooth include the Cardiopad,

an electrocardiography (ECG) machine developed to monitor heart activity in patients in remote areas of Cameroon,

and sends that information directly to an ipad app via Bluetooth. By cross-checking this data against a database

Sensors could be linked via Bluetooth to sprinkler systems to automatically optimise moisture levels. The ability to use just the right amounts of water and fertiliser to produce a good harvest without wasting resources can improve crop yields and rural incomes.

Bluetooth is also being used to help those in agriculture in other ways. Kenyan mobile tech company Virtual city has developed Agrimanagr

electronic scales are used to transmit the weight of produce via Bluetooth to a mobile phone which records this in farmers'accounts on a cloud-based server.

#This system could of course be done without Bluetooth, but being wireless makes it easier.""Out in the rural areas,

With Bluetooth, our devices do that, and can work for 12 hours without electricity.##Bluetooth can also provide new ways of communicating in rural settings where internet access is unavailable or out of reach for the poor.

Gary Marsden, a computer scientist at the University of Cape town, developed Big board, an electronic notice board that disseminates information wirelessly and for free.

and send it via Bluetooth to a nearby device which sends them the information they want.

This includes a solar-powered phone charging station and a Bluetooth-based local version of Dropbox

Bluetooth Smart, like its older sibling, may be a relatively straightforward radio wave-based transmission technology. But as we devise more and more ways to benefit from ever greater connectivity between the people, other living organisms, objects and our environments,

and cafes offering wi-fi, are now seeing the effect of this. In Prenzlauer Berg, Factory,

#Bloomberg the Company Daniela Perdomo credits the absence of basic communication services after superstorm Sandy for inspiring Gotenna Inc. a do-it-yourself wireless network that can carry text

and the service operates independently from cellular or Wi-fi networks. The signal range is anywhere from 50 miles to several blocks depending on interference.``

Some of the uses for the point-to-point communication include outdoor adventurers who travel beyond the reach of cellular networks concertgoers who want to coordinate locations

and entertainment. he vehicles with free wi-fi onboard arrive at stops frequently#from every 10-18 minutes depending on the

And that is precisely what a team of EU-funded researchers are achieving in the SWAP('Symbiotic Wireless Autonomous Powered system')project.

and expertise to develop the next generation of innovative, autonomously powered wireless sensors. n recent years,

The tags needed for Radio frequency identification (RFID) can be removed or altered. Laser marking might be the answerbut existing techniques produce microscopiccracks in the glass.

The new research harnesses technological advances in wireless networking, environmental sensors and soil water movement models.

The possibilities include wireless communication between fire fighters sending images when visibility is extremely low and identifying toxic fumes in the air.

The PCB (printed circuit board) consists of a Bluetooth module, a small power supply unit, interfaces connected to sensor modules and an RFID (radio frequency identification) reader.

Information is collected from the RFID reader and the sensors and sent via Bluetooth to a computer.

One prototype is controlled a wristband by hand gestures. It reacts to upwards and sideways movements recognising the speed of movement.

The wristband has now been developed to react to micro gestures, after the larger, less subtle movements during earlier testing made patients feel uncomfortable.

Arbabian's team recently presented a working prototype of this wireless medical implant system at the IEEE Custom Integrated circuits Conference in San jose California.

"Tiny wireless nodes such as these have the potential to become a key tool for addressing neurological disorders"says Florian Solzbacher professor of electrical and computer engineering at University of Utah and director of its Center for Engineering Innovation.

including a smartphone (iphone 4s) capable of practical wireless communication with two pumps delivering doses of insulin and glucagon.

The team tested the wireless charging system in a pig and used it to power a tiny pacemaker in a rabbit.

and efficacy requirements for using this wireless charging system in commercial medical devices. But it has the potential to eliminate bulky batteries

Either way, far-field electromagnetic waves have been ignored as a potential wireless power source for medical devices. Near-field waves can be used safely in wireless power systems.

and transmits the information to a radio frequency identification reader held by a doctor. The wirelessly powered chip can be attached to implants

A much smaller more efficient radio wave circulator has the potential to double the useful bandwidth in wireless communications by enabling full-duplex functionality#meaning devices can transmit

The same group is also working on a second project Translation on Glass that uses the same smartphone-Glass Bluetooth connection process to capture sentences spoken into the smartphone translate them to another language

-and-a-half-long HD movies in one second and is 30 times faster than LTE wireless. ot only is this a way to transmit multiple spatially collocated radio data streams through a single aperture,

and relay commands this tiny wireless chip costs pennies to Make it's cheap enough to become the missing link between the internet as we know it

so that it can be installed on any gadget anywhere. ow do you put a bidirectional wireless control system on every lightbulb?

Everything hinged on squeezing all the electronics found in say the typical Bluetooth device down into a single ant-sized silicon chip.

The antenna had to be small one-tenth the size of a Wi-fi antenna and operate at the incredibly fast rate of 24 billion cycles per second.

#Wi-fi backscatter could make Internet of things real A new method uses radio frequency signals as a power source

and reuses existing Wi-fi infrastructure to provide internet connectivity to battery-free devices. Called Wi-fi backscatter this technology is the first that can connect battery-free devices to Wi-fi infrastructure.

Imagine a world in which your wristwatch or other wearable device communicates directly with your online profiles storing information about your daily activities where you can best access it all without requiring batteries.

and engineering at the University of Washington. e now have the ability to enable Wi-fi connectivity for devices

what Wi-fi typically requires. he researchers will publish their results at the Association for Computing Machinery s Special interest Group on Data communication s annual conference this month in Chicago.

and wireless signals in the air. This work takes that a step further by connecting each individual device to the internet

The challenge in providing Wi-fi connectivity to these devices is that conventional low-power Wi-fi consumes three to four orders of magnitude more power than can be harvested in these wireless signals.

and circuitry that can talk to Wi-fi-enabled laptops or smartphones while consuming negligible power.

These tags work by essentially ookingfor Wi-fi signals moving between the router and a laptop or smartphone.

or not reflecting the Wi-fi router s signals slightly changing the wireless signal. Wi-fi-enabled devices like laptops

and smartphones would detect these minute changes and receive data from the tag. In this way your smart watch could download emails

if you re looking for specific patterns you can find it among all the other Wi-fi reflections in an environmentsays coauthor Joshua Smith an associate professor of computer science and engineering and of electrical engineering.

The Wi-fi backscatter tag has communicated with a Wi-fi device at rates of 1 kilobit per second with about 2 meters between the devices.

#Vibrating glove could teach you Braille A new wireless computing glove can help people learn to read

And it s an important first step in advancing wireless signal processing and designing ultrathin efficient cell phones. ur devices are much smaller than any other sources of radio signals

In addition most of these components cannot be tuned easily in frequency requiring multiple copies to cover the range of frequencies used for wireless communication. raphene NEMS can address both problems:

#Wireless device grabs lost energy from Wi-fi Using inexpensive materials configured and tuned to capture microwave signals researchers have designed a power harvesting device with efficiency similar to that of modern solar panels.

or Wi-fi signals the researchers say. The key to the power harvester lies in its application of metamaterials engineered structures that can capture various forms of wave energy and tune them for useful applications.

and recover a Wi-fi signal that would otherwise be lost Katko says. Another application could be to improve the energy efficiency of appliances by wirelessly recovering power that is now lost during use. he properties of metamaterials allow for design flexibility not possible with ordinary devices like antennassays Katko. hen traditional antennas are close to each other in space they talk to each other

and open up new possibilities for wireless communication at much higher frequencies. The scientific achievement is twofold.

Traditional streaming involves downloading 30 to 60 seconds of video ahead of time with the video quality and speed varying depending on wireless signal strength.

and Bluetooth compatible onboard computing/communications devices. The vehicle is suited especially to generate the power required to operate these devices.

and Wi-fi connectivity and a kinematically coupled bed that uses magnets to ensure high-precision printing even after the various components are inserted manually.

Some are experimenting with radio frequency identification and other sophisticated methods, including etching identification codes on produce with lasers

My company, the Home security Company, is giving away a free wireless home security system and in-home installation.##

Notably, the signals broadcast by any ibeacon-compatible radio (which broadcast signals known as Bluetooth Low energy) can also be picked up by Android and Windows phones,

That front piece also has Bluetooth capabilities, so turn on your iphone and go nuts controlling your paper airplane.

for example, through a cell phone built into the car, Bluetooth transmissions to other devices, or when the car goes in for service.

##Need an RFID T-shirt? A smart magazine? The possibilities appear to be endless, as the same material can also be adapted to make a##transparent conductive film,##in other words a see-through electronic circuit,

But charging moving vehicles with high-power wireless chargers below them is complex.####Researchers at North carolina State university have developed a method to deliver power to moving vehicles using simple electronic components, rather than the expensive power electronics or complex sensors previously employed.

Wireless charging through magnetic induction##the same type typically used for electric toothbrushes##is being pursued by a number of companies for consumer electronics and electric vehicles.

Stationary inductive chargers for electric vehicles typically use sensors to ensure that the receiver coils on the vehicle are aligned above wireless charging pads correctly.

Commercial interest in wireless charging systems for moving vehicles is growing. Qualcomm is working on a##dynamic##charging system that builds off its current stationary#wireless EV charger.

The University of Utah has tested a wireless charging infrastructure for city buses and has spun out a company called Wireless Advanced Vehicle Electrification#to build commercial products.

With the Utah system a bus could charge from coils placed under the road surface where passengers load or at traffic lights.

a company that makes wireless charging equipment. But the electronic tooling used for small electronics,

Coin communicates with your iphone using low energy Bluetooth and securely stores the data on the card.

One cool feature that was highlighted in the above video is that Coin checks in over Bluetooth with your iphone.

Its included suction cup mount has an##energy antenna##embedded inside to gather electromagnetic activity (such as from#Wi-fi signals) to translate for use as power,

For much of the world s poor, access to mobile networks has surpassed access to#energy, water and even basic sanitation#leaving an estimated 550 million people with phones who can t even charge them on a regular basis.

like#RFID chips that users carry with them on their persons;##some schools already require students wear them as bracelets that sensors can pick up to#deter truancy.

You can already buy wireless recharging pads: Place your cellphone on a pad that s plugged into the wall,

It will be the last thing to go wireless, but it will go wireless.####Is the process safe?

In recent weeks, Intel and Hon hai/Foxconn, seeing wireless charging as a possible killer app for electronic devices such as laptops

which is reported to have plans to test a wireless charging station for plug-in cars. The technology has applications outside the consumer sphere as well.

#Battery-free Wifi devices that run on radio waves What if devices could pull enough power wirelessly from the air to run themselves

Not so#according to a group of University of Washington engineers#who are building a communication system called Wifi backscatterthe system powers devices using radio waves

and connects them to laptops or smartphones over#Wifi networks. Previous research had shown it possible to run low-power devices off radio, TV,

We now have the ability to enable Wifi connectivity for devices while consuming orders of magnitude less power than

what Wifi typically requires. How does it work? The team made a tag that listens for Wifi signals being sent from a local router to a laptop or smartphone and vice versa.

The tag s antenna encodes data#by selectively reflecting or absorbing the signals. This selective reflection makes tiny changes in signal strength that can be detected

Given the prevalence of Wifi, this provides a great way to get low-power Internet of things devices to communicate with a large swath of devices around us, Ranveer Chandra,

Then there are a whole host of issues to work out dealing with wireless communications s

#Does internet privacy come at a premium? Would you pay for online privacy? Once we went online the concept of privacy changed.

The swiss Federal Institute of technology in Lausanne have developed a drone that can pinpoint the location of a mobile phone by picking up its Wi-fi signal.

The drone could also be used to provide Wi-fi if infrastructure was knocked out by a disaster,

The EPFL team noted its work underscores confidentiality issues with drones as its aircraft can pull phones Wi-fi network names and MAC addresses.

But it also only works in a search and rescue situation if a phone s Wi-fi connections are unprotected.

and#integrating 4G LTE service into their cars starting this year. Drivers pay a monthly service fee for#in-car 4g#that s separate from their smartphones,

In promotional materials, Audi and GM both emphasize 4G LTE service as a mechanism for users to get in-car entertainment, rather than for navigation or safety monitoring.

while Audi emphasizesfaster downloads and high-definition video streaming for up to eight devices used by passengers over the in-vehicle#Wi-fi#hotspot.

Beyond the obvious use cases of Netflix and#data-heavy navigation systems, 4G LTE service also means drivers can send#SMS#text messages by voice dictation,

an Indian startup, is going to start selling its Bluetooth enabled Lechal shoes for more than $100 a pair in September.

the batteries can deliver enough current for low-power wireless communications sensors, distinguishing them from other types of thin batteries.

a small wireless device on her wrist was monitoring her emotional ups and downs (through heart rate monitoring and electrical changes in her skin).

The Connected Fitting Room uses RFID tags to register the items a customer brings into a fitting room,

the company s initiative to bring the Internet to less-connected places around the world using high-altitude Wi-fi balloons.

you simply select your scope as your Wi-fi server, open your Shotview app and you re suddenly able to see whatever your barrel is pointed at.

Collars with GPS, RFID and biometrics can automatically identify and relay vital information about the livestock in real time.

however, wants to make it easy as running an app and pairing a bluetooth dongle. The SCIO is a handheld device that pairs with a smartphone through Bluetooth LE being developed by Consumer Physics

an Israel-based startup funded by Kholsa Ventures. It based on near-infrared spectroscopy, which means it reflects light onto an object,

backwards) of your hand Sharp movements such as drum hits This information is transmitted wirelessly to your computer, over Wifi (via the x-OSC board on the wrist).

#Altaeros Energies floating wind turbine churns out electricity and Wi-fi This floating turbine, developed by Altaeros Energies could someday travel to every remote corner of the globe.

While in the air, the turbines can also serve as Wi-fi, cell service hubs, and weather monitoring stations.

they are the same kind of fields used in Wi-fi routers. In the house of the future, wire-free energy transfer could be as easy as wireless internet.

and efficiency Tool and equipment management systems using radio-frequency identification (RFID), provided by Toolhound Inc,

with each individual responsible for the equipment they take. racking metal tools that are covered typically in dirt requires quick and reliable RFID technology,

All tools and handheld equipment are tagged with both RFID-on-metal tags and standard RFID tags which the inventory system can scan.

The kiosk has an inventory scanner and a touch screen monitor to allow miners to interact with the system;

A nearby communications trailer provides a dedicated wireless communications link between the equipment and the operator.

The technology operates using a closed Wifi network to communicate between the operator station and the rig.

The closed network means that the Benchremote technology is independent of any other local Wifi network

In addition to providing access via current standards (Wifi LTE 3g or 2g connections) the Oneweb network would also give much-needed global emergency and first responder access for natural disasters refugee camps and other humanitarian needs.

The device connects via Bluetooth to your keyboard and mouse. No doubt the souped-up gamer version will follow shortly.

or ipad via a Bluetooth connection (Android app coming soon). Using the app, you chose the kind of session, the intensity as well as the length of a session.

#'Wi-fi'Nanoparticles Send Signals from the Brain The problem with talking to our own brains,

with the idea of establishing a kind of direct wireless connection to neurons. DNEWS: Brain-To-Brain Networking Takes First Baby Stepsthe agnetoelectricnanoparticles (MENS) injected in the mice have several special properties.

#LED Bulbs Offer a Low energy, Wireless Connection This lightbulb could work as your next wireless router.

At the University of Virginia, researchers have unveiled a new way to transmit wireless data in light waves from LED LIGHTS a much more reliable and faster alternative to radio wave Wi-fi. DNEWS:

#NYC Is Turning Trash cans Into Wi-fi Hotspots Consider the humble trash can. Stalwart and immobile, it populates our cities by the thousands,

The Wireless internet option essentially turns the trash cans into free public Wi-fi hotspots, providing throughput of 50 to 75 MB per second.

the Wi-fi trash cans provide a strong signal that not blocked by buildings or other structures.

Wi-fi Sprinkler Saves Waterbigbelly is now working with the city to add Wi-fi to hundreds more waste stations throughout the city five boroughs, with a particular concentration in underserved neighborhoods.

and Wi-fi hot spots. More than 10,000 refurbished pay phone kiosks are set to go live by the end of the year.

They could even provide us with a global Wi-fi system On earth. Paulo Lozano leads a team working on Cubesat propulsion at the Massachusetts institute of technology.

Creating a universal"satellite Wi-fi""like existing satellite phone coverage, would require thousands of big satellites,

Sociometric s system based on years of MIT research consists of employee identification badges with built-in Bluetooth sensors that track location and which way someone s facing.

When trialed in a base station last year Eta Devices module became the first transmitter for 4G LTE networks to achieve an average efficiency greater than 70 percent Dawson says.

Eta Devices has entered also conversations with major manufacturers of LTE-enabled smartphones to incorporate their chips by the end of next year.

But by adjusting that voltage continuously ET efficiency falls apart for 4G LTE and 802. 11ac (Wifi) wireless standards even up to 20 MHZ bandwidth.

ETADVANCED in contrast already accommodates ultrahigh bandwidths used by newer communication standards such as LTE Advanced (up to 80#megahertz) and the next-generation Wifi standard (up to 160 megahertz).

) Prepping for future communication standards is one thing that s helped the company thrive Dawson says.

and provide real-time feedback to the wearer via a Bluetooth headset. For instance auditory cues would provide feedback such as This person is bored

Near the end of the last decade however a team of MIT researchers led by Professor of Physics Marin Soljacic took definitive steps toward more practical wireless charging.

We believe wireless charging has a potential to do that. He is not alone. Last month Witricity signed a licensing agreement with Intel to integrate Witricity technology into computing devices powered by Intel.

Courtesy of Witricity Corp. Full Screen Stronger couplingsimilar wireless charging technologies have been around for some time. For instance traditional induction charging

Wireless charging: An expectationthese days Gruzen sees wireless charging as analogous to the evolution of a similar technology Wifi that he witnessed in the early 2000s as senior vice president of global notebook business at Hewlett packard.

At the time Wifi capabilities were implemented rarely into laptops; this didn t change#until companies began bringing Wireless internet access into hotel lobbies libraries airports and other public places.

Now having established a standard for wireless charging#of consumer devices with the A4wp (Alliance for Wireless Power) known as Rezence Witricity aims to be the driving force behind wireless charging.

Soon Gruzen says it will be an expectation much like Wifi. You can have a charging surface wherever you go from a kitchen counter to your workplace to airport lounge

and hotel lobbies he says. In this future you re not worried about carrying cords. Casual access to topping off power in your devices just becomes an expected thing.

This is where we re Going with an expected rise of wireless charging one promising future application Soljacic sees is in medical devices especially implanted ventricular assist devices (or heart pumps) that support blood flow.

and the information sent back via wireless communications. Detecting leaks by sensing a pressure gradient close to leak openings is a novel idea

such as developing low-cost sensing technology with wireless communication that could be retrofitted on to older equipment.

But perhaps the most logical added payload Glass says is Wi-fi technology: If you have a remote village for instance he says you can put a Wi-fi unit up outside the village

and you re much higher than you d get with a traditional tower. That would allow you to cover six to eight times the area you would with a tower.

The ball also serves as its own wireless hotspot, through Bounce Imaging network, that a mobile device uses to quickly grab those images ecause a burning building probably isn going to have Wi-fi,

but we still want to work with a first responder existing smartphone, Aguilar says. But the key innovation, Aguilar says,

for example using Wi-fi, over a long distance. At the moment, the coin-sized batteries used in many small electronic devices have limited very ability to deliver a lot of power at once,

which is what such data transmissions need. ong-distance Wi-fi requires a fair amount of power,

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