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MIT Researchers Triple Wireless Speeds
August 29, 2016 by admin
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MIT researchers have uncovered a way to transfer wireless data using a smartphone at a speed about three times faster and twice as far as existing technology.
The researchers developed a technique to coordinate multiple wireless transmitters by synchronizing their wave phases, according to a statement from MIT on Tuesday. Multiple independent transmitters will be able to send data over the same wireless channel to multiple independent receivers without interfering with each other.
Since wireless spectrum is scarce, and network congestion is only expected to grow, the technology could have important implications.
The researchers called the approach MegaMIMO 2.0 (Multiple Input, Multiple Output) .
For their experiments, the researchers set up four laptops in a conference room setting, allowing signals to roam over 802.11 a/g/n Wi-Fi. The speed and distance improvement is expected to also apply to cellular networks. A video describes the technology as well as a technical paper (registration required), which was presented this week to the Association for Computing Machinery’s Special Interest Group on Data Communications (SIGCOMM 16).
The researchers, from MIT’s Computer Science and Artificial Intelligence Lab, are: Ezzeldin Hamed, Hariharan Rahul, Mohammed Abdelghany and Dina Katabi.
Courtesy-http://www.thegurureview.net/mobile-category/mit-researchers-develop-technique-to-triple-wireless-speeds.html
Courtesy-http://www.thegurureview.net/mobile-category/mit-researchers-develop-technique-to-triple-wireless-speeds.html
GM Buys Cruise Automation
March 21, 2016 by admin
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General Motors the acquisition Cruise Automation for Cruise’s deep software talent and rapid development capability — a move designed to further accelerate GM’s development of autonomous vehicle technology.
Over the past two months, GM has entered into a $500 million alliance with ride-sharing company Lyft; formed Maven — its personal mobility brand for car-sharing fleets in many U.S. cities — and established a separate unit for autonomous vehicle development.
“This acquisition announcement clearly shows that GM is serious about developing the technology and controlling its own path to self-driving and driverless vehicles,” said Egil Juliussen, research director for IHS Automotive.
While GM did not disclose the financial details of the Cruise acquisition, reports estimated the purchase to be in the $1 billion range.
Founded in 2013, Cruise sells an aftermarket product that is positioned as a highway autopilot, according to IHS Automotive.
Vehicles using Cruise’s software cannot automatically changes lanes, but the technology does work at low speed and highway speed, meaning it’s classified between Level 2 and Level 3 in the National Highway Traffic Safety Administration’s levels of autonomous driving.
The NHTSA’s Level 3 includes limited self-driving automation and allows a driver to cede full control of all safety-critical functions under certain traffic or environmental conditions; Level 4 indicates a fully autonomous vehicle.
Cruise’s software was initially offered by Audi in its A4 and S4 vehicles as a $10,000 option that required installation work by Cruise. The product consisted of a sensor unit on top of the car and a computer in the trunk.
GM’s purchase of Cruise is likely to spur other carmakers “to react and determine what their strategy should be,” Juliussen said.
Other carmakers are likely to seek to become partners with Google and license Google’s self-driving and driverless software technology. Multiple manufacturers are likely to opt for a Google partnership, IHS said.
Source- http://www.thegurureview.net/aroundnet-category/gm-announces-acquisition-of-cruise-automation.html
U.S. LTE Speeds Drop
October 5, 2015 by admin
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The U.S. has dropped to No. 55 in LTE performance as speeds rise rapidly in countries that have lept ahead some early adopters of the popular cellular system.
The average download speed on U.S. 4G networks inched up to 10Mbps (bits per second) in the June-August quarter, according to research company OpenSignal. That was an improvement from 9Mbps in the previous quarter, but the country’s global ranking fell from 43rd as users in other countries made much larger gains.
The U.S. was one of the first countries with commercial LTE service when Verizon Wireless launched its network in late 2010. But other countries that adopted the system later started with better technology, and some have secured more frequencies or rolled out enhancements that U.S. carriers haven’t embraced as much, OpenSignal said.
New Zealand scored the highest average speed in the quarter with 36Mbps, coming up from nowhere in the rankings. But perennial standouts like South Korea and Singapore kept getting faster, too. The average LTE speed in Korea is now 29Mbps (up by 4Mbps), and in Singapore it’s 33Mbps, up by 5Mbps.
OpenSignal collects data on cellular performance through a free app that mobile subscribers can use to measure the speed they’re getting and find faster networks. The results announced Wednesday are based on readings from more than 300,000 users worldwide, the company said.
Countries like Hungary, the Dominican Republic and Morocco beat the U.S. in average LTE speed, but they aren’t necessarily smartphone paradises. Mobile users in America can use LTE more of the time, for example, because their carrier’s networks are built out. Subscribers in the U.S. are on LTE 78 percent of the time, on average, making the country No. 10 for what OpenSignal calls “time coverage.” Moroccan LTE may be fast, but 49 percent of the time, users there don’t get it, for example.
Source-http://www.thegurureview.net/mobile-category/u-s-falls-to-55th-place-worldwide-for-lte-speeds.html
FCC Commits To 600 Mhz Wireless Spectrum Auction
September 21, 2015 by admin
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LAS VEGAS — Federal Communications Commission Chairman Tom Wheeler has committed to a March 29 start date for an unprecedented auction of 600Mhz wireless spectrum currently under the control of the nation’s broadcasters.
The auction has already been delayed two years, but Wheeler was adamant it will move ahead on a timeline that allows input from broadcasters as well as from wireless providers that would be potential spectrum buyers.
The broadcast spectrum in the 600Mhz band offers the potential to wireless carriers to send data, including video and other multimedia at much faster speeds and with lower latency. Latency refers to the speed required to generate a response to a wireless signal.
“I’m supremely confident [the auction] starts March 29,” he said in keynote comments at CTIA Super Mobility Week 2015 here. Explaining the delays, he said the planned auction is like a “Swiss watch with so many moving parts.”
The FCC plans to issue a new public notice in October that will give further details on the planned schedule. Wheeler said that around Thanksgiving, broadcasters will be able to indicate whether they want to participate in offering up the spectrum they use today.
Once the FCC establishes pricing, the broadcasters can decide whether to move forward or withdraw from the process if the prices don’t meet their needs, Wheeler said. In January, wireless providers — including newcomers, possibly — will be prompted to express interest in joining the auction to buy spectrum.
Wheeler contended that the 600MHz spectrum auction shows the FCC is moving to free up spectrum that the cellular industry says it urgently needs.
Source-http://www.thegurureview.net/mobile-category/fcc-commits-to-600-mhz-wireless-spectrum-auction-in-march.html
Does 4G Pose A Security Threat?
Could 4G Networks give way for more high-risk mobile security implications; Symantec is warning of such a wave of threats.
“We could see a move to the sort of threats that we already see on the wireless and fixed connected network,” John said. “Malware that you usually have on fixed networks, like botnets.
“There aren’t many botnets on mobile devices because the bandwidth’s not there to support it, once you go on to 4G [hackers] could start infecting systems.”
To ensure that enterprises avoid these these security threats, John advised that businesses need to be on their toes more than ever, look closely at everything that’s coming into the network, and not trust anything.
“Companies need to make sure that where traditionally it’s been a firewall with a perimeter with everything in a timeline environment,” John said. “What they need to look at is ‘what are my employees doing’, ‘what information is being shared’ and ‘how do we ensure our information is being protected no matter where it may be’, whether its mobile device, across networks or sitting in a cloud service.”
“This is a change we are going through, but 4G is going to push the need for that change even more so,” she added.
According to John, 4G will also be detrimental to businesses in the way it will add a greater burden for them to ensure that cloud services and mobility – what she calls “two of the biggest security challenges for enterprises and their employees” – are up to scratch.
Comcast Starts IPv6 Network Rollout
Comcast has begun the production rollout of its new IPv6 service, with 100 customers upgraded in San Francisco’s East Bay in one week.
IPv6 is an upgrade to the Internet’s main communications protocol, which is called IPv4. IPv6 features an expanded addressing scheme that can support billions of devices connected directly to the Internet at faster speeds and lower cost than IPv4, which is running out of addresses.
Comcast began an IPv6 trial 18 months ago and is a leader in the deployment of IPv6-based services among U.S. ISPs.
The production rollout began on Oct. 31. It offers customers “native dual-stack service,” which means Comcast is supporting both IPv6 and IPv4 services.
The initial subscribers of Comcast’s production-quality IPv6 service have stand-alone computers running Microsoft Windows 7, Windows Vista or Apple Mac OS X that are connected directly to a Comcast cable modem. Comcast plans to support IPv6 for customers with home routers at a later date.
Intel Developing Thunderbolt Technology
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A new interconnect technology being developed by Intel could be ready for market by 2015 and will be able to move data between computers at up to five times the speed of its recently launched Thunderbolt technology, an Intel researcher said earlier this week.
The new technology uses silicon photonics, which combines silicon components with optical networking, to transfer data at up to 50 gigabits per second over distances of up to 100 meters, said Jeff Demain, strategy director of circuits and system research at Intel Labs, at a company event in New York.
Intel expects the technology to be ready for use in PCs, tablets, smartphones, televisions and other products by 2015, Demain said. As well as being faster than today’s interconnect technologies, it’s expected to lower costs because the components will be built using existing silicon manufacturing processes.
The technology could possibly be used in TVs and set-top boxes to carry video streams at much higher definition than those available today. Image resolution is likely to quadruple by the middle of the decade, when successors to 1080p have arrived, and that will mean more data has to be pushed to the TV.
It should also enable faster data transfers between smartphones, tablets, PCs and peripherals such as external storage drives.
The technology still has a way to go, but Intel showed its progress at the event in New York Wednesday. It showed what it said were working prototypes of the silicon chips used to transmit and receive the laser signals.
AT&T’s iPhone 4 Beats Verizon’s
March 7, 2011 by Mike
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In the phone wars between the two big carriers, it looks like AT&T wins this round. The iPhone 4 on AT&T’s network downloaded data twice as fast, on average, as the iPhone on Verizon Wireless, according to thousands of recent field tests in five U.S. cities performed by Metrico Wireless, an independent mobile device performance evaluation firm.
Metrico’s tests looked at several other variables, however, and found the average Web page load time was nearly the same on iPhone 4 on both networks, a Metrico official said.
Also, when the iPhone 4 was in a moving vehicle, the AT&T model successfully finished about 10% more download session than Verizon’s. But when the iPhones were stationary, the Verizon iPhone had a 10% better success rate in uploading data than the AT&T iPhone, Metrico said.
Metrico did not reveal actual time measurements for any of its results, including the data downloads and uploads or Web page loading times, prior to publication of its full study.
Some of Metrico’s findings are at odds with several smaller spot reports conducted last month that found Verizon’s iPhone performed better on several criteria. But a Metrico official noted that those quick studies were based on only a handful of test samples, often in a single city, including San Francisco, where AT&T’s coverage for the iPhone has been consistently criticized.
AT&T admitted more than a year ago that it had network problems in downtown San Francisco and Manhattan and had begun infrastructure updates. Read More….