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Li-Fi: Transmitting Wireless Broadband Through LED Light Bulbs

Phillip Dampier August 30, 2011 Video, Wireless Broadband 3 Comments

A British physicist has developed a technology that could one day deliver your wireless broadband connection over any ordinary household lamp equipped with a “light emitting diode” (LED) light bulb.

Professor Harald Haas from Edinburgh University in the United Kingdom says he has developed a super-efficient, super-fast wireless broadband transmission system that uses light instead of radio waves.

Dubbed Light Fidelity, D-Light, or “Li-Fi” for short, Haas demonstrated his invention using an ordinary table lamp that successfully transmitted data at speeds exceeding 10Mbps using light waves from LED light bulbs to a computer located below the lamp.

To prove that the light bulb was the source of the data stream, he periodically blocked the beam of light, causing the connection to drop.

Haas says using light waves for data transmissions could revolutionize wireless communications and end the spectrum shortage plaguing today’s wireless industry.

“The way we transmit wireless data is inefficient electromagnetic waves, in particular radio waves which are limited, they are sparse, they are expensive and only have a certain range,” Professor Haas said. “It is this limitation which does not cope with wireless data, and we are running out of efficiency.”

Haas notes 95 percent of the energy used to transmit electromagnetic waves is wasted through heat dissipation.

Haas added that during today’s spectrum crunch, opening up light waves for wireless telecommunications would increase the amount of available spectrum by at least 10,000 percent, potentially transforming how we think about wireless communications technology.

“Light is part of the electromagnetic spectrum. Wouldn’t it be great to use it for wireless communications?”

Haas believes as we begin to replace energy inefficient traditional light bulbs for LED bulbs, which are becoming increasingly affordable, using them to piggyback data transmissions of all kinds could make staying “in range” of a wireless signal as simple as flicking on a light switch.

“For me the applications of it are beyond imagination,” Haas said.  “All we need to do is to fit a small microchip to every potential illumination device and this would combine illumination and data transmission, and this could solve the problems facing us in wireless communication.”

[flv width=”512″ height=”308″]http://www.phillipdampier.com/video/Harald Haas Demos Light-Fi.mp4[/flv]

What if every light bulb in the world could also transmit data? At TEDGlobal, Harald Haas demonstrates, for the first time, a device that could do exactly that.  (13 minutes)

CA/TX Weekend Outages = Service Credits for Time Warner Cable Customers Who Ask

Phillip Dampier August 30, 2011 Consumer News Comments Off on CA/TX Weekend Outages = Service Credits for Time Warner Cable Customers Who Ask

While the east coast contended with Hurricane Irene last weekend, hundreds of thousands of Time Warner Cable customers further west were dealing with widespread broadband and phone outages in Texas and California.

For Californians, the problems gradually increased early Sunday morning until eventually causing significant service disruptions starting just before 7am.  As the morning wore on, Time Warner’s call centers became so overwhelmed with calls, very few actually got to speak with a customer service representative, greeted instead with:

“Due to high call volume, all agents are currently busy.  Please try your call again later,” after which the call was disconnected.

By 1pm, engineers finally found the malfunctioning equipment responsible for outages in different parts of the country and started rerouting traffic around the problem.

Time Warner wouldn’t say where the troubles originated, but its impact illustrates Time Warner broadband customers can be affected by outages and malfunctions several states away.

Service was gradually restored as the afternoon progressed.

Time Warner Cable customers affected by the outage can receive a service credit for interrupted phone and broadband service, but only if they ask.  The company does not plan to issue automatic credits.

Southern Californians can use this Time Warner Online E-Mail form to request credits.  Texans can use this Time Warner Online E-Mail form to request credits.

Cable television service was not affected.

U.S. Department of Agriculture Announces $103 Million in Broadband Grants/Loans

Phillip Dampier August 29, 2011 Broadband Speed, Public Policy & Gov't, Rural Broadband, Wireless Broadband Comments Off on U.S. Department of Agriculture Announces $103 Million in Broadband Grants/Loans

The U.S. Department of Agriculture has announced more than $103 million in federal grants and loans to 16 states to help expand broadband, or high-speed, Internet access to unserved and underserved areas of rural America:

Community Connect Grantee Community State Award Amount
R&S Communications LLC Vina Town Alabama $570,800
Crystal Broadband Networks, Inc. Birdsong Town Arkansas $570,800
Cable Partner.Net Inc. Whelen Springs Town Arkansas $570,800
Karuk Tribe Orleans California $1,141,870
Crystal Broadband Networks, Inc. Heidelberg Kentucky $576,400
Crystal Broadband Networks, Inc. Yellow Rock Kentucky $583,400
Inter Mountain Cable Inc. Endicott Kentucky $993,339
Nexus Systems Inc. Manifest Louisiana $1,116,505
Nexus Systems Inc. Larto Louisiana $1,116,505
Plateau Wireless LLC Olean Town Missouri $570,800
Plateau Wireless LLC Brumley Town Missouri $570,800
Arizona Nevada Tower Corporation Gabbs City Nevada $1,046,798
Crystal Broadband Networks, Inc. Stafford Village Ohio $570,800
Wichita Online Inc. Cornish Town Oklahoma $494,000
Wichita Online Inc. Tushka Town Oklahoma $480,000
Wichita Online Inc. Leon Town Oklahoma $481,000
Scott County Telephone Cooperative Flat Top Virginia $1,500,000
Crystal Broadband Networks, Inc. Panther West Virginia $571,900
Infrastructure Loan Awards
Wabash Telephone Exchange Illinois $21,867,000
The Hemingford Cooperative Telephone Co. Nebraska $10,280,000
Coleman County Telephone Cooperative Inc. Texas $22,540,000
Vernon Telephone Cooperative Wisconsin $24,143,000
Dubois Telephone Exchange Wyoming $11,391,000

The providers involved offer a mix of technology, ranging from traditional cable companies like Inter Mountain Cable and Crystal Broadband Networks — to Wireless ISPs like Wichita Online, serving southwestern Oklahoma, to rural telephone company DSL provided by companies like Hemingford Cooperative Telephone and the Coleman County Telephone Cooperative.

What most rural providers have in common are much-higher prices for slower speed service over what urban customers pay, and a regular need for resources to update capacity and the number of potential customers served.  Most of these grants and loans are expected to cover some of those costs.

Ouch. Rural Americans pay substantially higher prices for broadband service than city-dwellers do. This is current pricing from Inter Mountain Cable, which serves parts of rural Kentucky.

Frontier Adds New $1.50 Surcharge to Broadband Bills; Customers Told It Will Improve Service

Frontier Communications is adding a new $1.50 monthly surcharge for broadband customers not currently enrolled in a “price protection agreement.”  Labeled the HSI Surcharge, the new fee started showing up on customer bills this month, with only a vague explanation buried inside the bill:

Courtesy: Manmaniac

Frontier's Fast One.

Customers attempting to get an explanation of what this charge was all about got a myriad of answers from Frontier customer service representatives:

  • It’s a broadband tax;
  • It’s a surcharge to help pay for network improvements;
  • It’s a charge for customers who refuse to take a price protection plan;
  • It’s a rate increase.

Stop the Cap! called Frontier this afternoon and was told it was designed to collect additional revenue to fund network expansion and was, effectively a rate increase.  Even customers on 1-3 year price protection agreements will eventually pay the “surcharge” as their agreements expire.  It is not a government-mandated charge or tax.

Effectively, this rate increase allows the company to advertise their Internet service at a deceptively low price, until customers discover Frontier’s modem rental fees and surcharges.  In 2009, during Stop the Cap!‘s flirtation with Frontier DSL, we found the “out the door” price for their 3.1Mbps service was actually higher than that charged by Time Warner Cable’s 10Mbps Road Runner service.

A Year of Internet Overcharging Suits Some Wireless ISPs Just Fine

Their prices are sky high.

Back in May 2010, Stop the Cap! launched a debate with a few Wireless Internet Service Providers (WISPs) that provide largely rural America with wireless access to the Internet over long range Wi-Fi networks.  The debate got started when Matthew Larsen, who runs the Wireless Cowboys blog, announced the arrival of an Internet Overcharging scheme at his WISP — Vistabeam, which serves residents in rural Wyoming and Nebraska.

WISPs are being increasingly challenged by the changing tastes of Internet customers, who are gravitating towards broadband multimedia content, saturating limited capacity networks and forcing regular infrastructure upgrades to keep up with increasing usage demands.  Unlike larger providers, many WISPs are independent, family-run businesses that lack easy access to capital and resources to rapidly respond to demand, especially when most have a rural customer base that numbers in the hundreds or thousands.

That’s one of the reasons why Stop the Cap! has not been as harsh on these providers when they implement usage limit schemes on their customers.  Because WISPs provide service where cable and phone companies usually don’t bother to serve, these wireless providers are the only option beyond satellite Internet, which we regularly label “fraudband” for claims of broadband speeds that are rarely delivered.  Still, we were not impressed last year with some of Larsen’s language about what his usage caps were intended to do (underlining ours):

I feel that these caps are more than generous, and should have a minimal effect on the majority of our customers.   With our backbone consumption per customer increasing, implementing caps of some kind became a necessity.    I am not looking at the caps as a new “profit center” – they are a deterrent as much as anything.    It will provide an incentive for customers to upgrade to a faster plan with a higher cap, or take their download habits to a competitor and chew up someone else’s bandwidth.

Ouch.

It’s been over a year, and Larsen is back with an editorial patting himself on the back for an Internet Overcharging success story well-implemented:

We have never raised prices on our services.    We still have a customer note on the wall that reads “Your bill was the only one I got this month that DIDN’T go up.   Thank you!”     I would have a hard time raising prices on this person because of their neighbors that are downloading 20x as much.   Usage Based Billing is a much fairer way to go, especially when the provider faces so much reinvestment cost to accommodate the heavier users.   After the first year of implementation, I am very glad that we took the time to implement it and intend to use the revenue to build a better network for all of our customers.

Larsen is also upset with those who believe in the concept of unlimited Internet:

Operating a broadband network is not free, and it is not a low-maintenance business.   I have a group of dedicated employees and subcontractors that have spent a lot of late nights and early mornings away from their families to build and maintain our network.   Anyone who thinks that unlimited broadband is a God given right should be forced to spend a few days in my lead tech’s shoes, getting a good look at what a broadband provider has to do to build a network and keep it running.

Larsen, like other WISPs are confronting the reality that Internet usage is on the upswing, and while we sympathize with the challenges faced by Vistabeam and other WISPs, his statements do not apply to every broadband network around.  And frankly, an increasing number of customers simply aren’t interested in Larsen’s challenges, especially if another provider can deliver service more cheaply and efficiently.  Vistabeam better hope nobody does, because their prices are simply not competitive if just about any other provider manages to work their way into his territory.

Vistabeam prices start at $29.95 a month for 384kbps/128kbps service with a monthly usage limit of 10GB.  Exceed that and you will pay an additional $1 per gigabyte.  Customers who need more speed pay dearly for it.  A tier providing 4/2Mbps service will run you $99.95 a month with a 60GB monthly usage allowance.

As of late, Larsen has been railing against the U.S. Department of Agriculture over recent broadband stimulus awards designed to improve coverage of broadband Internet in the same rural regions of the country Vistabeam serves.  He’s upset the USDA has awarded a $10.2 million infrastructure loan to the Hemingford Cooperative Telephone Company, which provides service in western Nebraska under the name Mobius Communications.

Larsen speaks highly of the fact Vistabeam delivers service in the absence of government funding or stimulus. But average consumers are not likely to care when they compare prices and consider the fact Mobius doesn’t appear to limit customers’ usage.

Mobius DSL Prices:

  • 500kbps – $35.00
  • 1.5Mbps – $40.00
  • 3Mbps – $50.00
  • 5Mbps – $60.00 (Currently available in Alliance and Chadron.)

Mobius charges effectively half the price Vistabeam charges, and offers faster tiers of service in some areas, without fear of overlimit fees.  It’s also important to recognize the “award” was actually a “loan,” which must be repaid.  Larsen seems less upset with the fact there are broadband stimulus programs than with the reality industry lobbying has effectively cut out many Wireless ISPs from standing any chance of winning one.

I get especially frustrated by loan awards like this one because I have operated two ISPs that have had to compete directly with Mobius and did not have access to any federal grant or loan programs.   The USDA Broadband and Loan programs are essentially only available to [regional phone companies].   When I made inquiries into the programs several years ago, I found that they would only loan to a single recipient in a region so that they were not funding competing projects.

Phillip Dampier

For Stop the Cap!, our constituents are consumers interested in obtaining the best possible broadband service at the best price.  Larsen’s views, understandable from the perspective of a business owner, would leave a number of consumers paying effectively double the price for usage-limited broadband. That would, however, satisfy a business argument that self-funded private providers should not face competition from other providers that can extend faster, unlimited DSL, cable, or fiber service with low interest loans.

Wouldn’t a better solution be to form a coalition to force open the same beneficial loan programs to Wireless ISPs who can more readily and affordably build up their networks and ease the Internet Overcharging that too often comes along for the ride?  We’re not accusing Larsen of gouging his customers for fun and profit, but we would like to see WISPs like Vistabeam develop win-win strategies that deliver success for their innovative efforts and lower priced, faster service for their customers.

The alternative may be the eventual arrival of those rural phone companies, increasingly equipped to deliver faster and cheaper service to Vistabeam’s current customers, eventually spelling disaster to that company’s business plan.  It has happened before.  Anyone remember the “wireless cable” industry that delivered a few dozen cable channels over microwave signals?  That’s a service whose time came and went, largely replaced with satellite television and rural telephone cable TV, better equipped to provide the kind of service consumers actually wanted, but wireless cable was ill-equipped to provide.

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