DARPA's Latest Grand Challenge Takes On The Radio Spectrum (gizmag.com) 64
An anonymous reader quotes a report from Gizmag: One of the most hotly contested bits of real estate today is one you can't see. As we move into an increasingly wireless-connected world, staking out a piece of the crowded electromagnetic spectrum becomes more important. DARPA is hoping to help solve this issue with its latest Grand Challenge, which calls for the use of machine-learning technologies to enable devices to share bandwidth.
The Spectrum Collaboration Challenge (SC2) is based on the idea that wireless devices would work better if they cooperated with one another rather than fought for bandwidth. Since not all devices are active at all times, the agency says, it should be possible through the use of artificial intelligence machine-learning algorithms to allow them to figure out how to share the spectrum with a minimum of conflict. DARPA announced the competition in front of 8000 engineers on Wednesday at the International Wireless Communications Expo (IWCE) in Las Vegas. SC2 will run from 2017 through 2020 with teams competing to create radios that can collaborate most effectively with other radios. The competition will end with a live event and the prize is $2 million.
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I think your computer was "hacked" by weev...
Wireless gang warfare (Score:2)
Go for a two-for (Score:2)
SPECTRUM (Score:2)
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wasn't that the Evil on Man from UNCLE?
The evil group on Man from U.N.C.L.E. was T.H.R.U.S.H.(*)
Perhaps you are thinking of S.P.E.C.T.R.E.(**), the evil group in the James Bond series?
(Or was there a major character in the series I'm missing?)
(*) Technological Hierarchy for the Removal of Undesirables and the Subjugation of Humanity.
(**) SPecial Executive for Counter-intelligence, Terrorism, Revenge and Extortion
KAOS (Score:2)
SPECTRUM? SPECTRE? THRUSH?
Pthhhhh. Amateurs.
We don't share bandwidth in KAOS (a Delaware Corporation).
We don't share any-ting!
So give me my lunch back, Starker!!
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SPECTRUM are the good guys in Captain Scarlett. They used the phrase "SIG" to indicate that "Spectrum is green"
Re:10 pounds of shit... (Score:4, Informative)
They could do what cellular radios do to increase sharing: cut transmit power until both radios agree the message is acceptably low but still reliably receivable. Then, when you need to increase the density of transmitters, you do so by distributing more access points. It also helps conserve transmit power, which is good for battery life.
And if they don't think CSMA/CD is effective enough, once the density of collisions is too high, they could let the access points switch to a time slice mode. They could be either self clocking, or timed on a separate shared control frequency.
The secret to radio bandwidth (Score:2)
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They already do that. [wikipedia.org]
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nice (Score:1)
So They Want A Free Protocol Spec. (Score:2)
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No, they want to pay $2M to the people who do the best research.
These "challenges" are very economically efficient for the offering group. They offer $X and typically the total amount of effort put into it is well over $X. Like if you have 10 groups each putting in $1M of R&D to earn $2M. Only one of them get the $2M but DARPA gets to choose from $10M worth of ideas so to speak.
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If the rules are anything like the last spectrum challenge ( http://archive.darpa.mil/spectrumchallenge/Rules.html ), then contestants own all of the IP they generated, including algorithms and no assignment is made to darpa or public domain. The idea isn't to force a spec out of it, it's to get a lot of big players thinking about spectral efficiency and how to work that into their products or research.
They already have this figured out (Score:1)
They moved to directed energy so each device can share the same spectrum at the same time. DARPA invented the technology that allows it called phased arrays.
DrRobertDuncan com [drrobertduncan.com]
like water rights but much worse (Score:3)
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There's a simple means used to allocate spectrum:
1. Government agencies get first claim.
2. What's left is sold to the highest commercial bidder.
3. The bits that no company wants are made available unlicensed, and the public are expected to be grateful that the government honors the ITU suggestions for ISM bands.
That's great... for the USA (Score:3)
But the rest of the world and considering illegal frequencies being used around the US will make this problem harder than one thinks.
So you come up with a great solution for 900Mhz, problem is you can't use it in the EU or Asia. Or how about 433? nope, more conflicts outside the US.
Then there's the 1W vs 25mW (rest of the world) requirement....
Not only is this a tech and regulation problem, it's a frequency management and standards nightmare.
At least you can drive a DARPA challenge car or a biped robot in pretty much any country without conflicting tech (but conflicting regs).
Re:That's great... for the USA (Score:4, Informative)
But the rest of the world and considering illegal frequencies being used around the US will make this problem harder than one thinks.
So you come up with a great solution for 900Mhz, problem is you can't use it in the EU or Asia. Or how about 433? nope, more conflicts outside the US.
Then there's the 1W vs 25mW (rest of the world) requirement....
Not only is this a tech and regulation problem, it's a frequency management and standards nightmare.
At least you can drive a DARPA challenge car or a biped robot in pretty much any country without conflicting tech (but conflicting regs).
They're looking for a mechanism to share bandwidth intelligently. There is nothing specific to frequencies or power handling in how bandwidth might be shared so the result should be usable regardless of local variations on implementation.
Thrilling Viewing (Score:2)
I can't wait to watch this competition unfold live on YouTube!
The discourse on Slashdot lately Twitter (nt) (Score:2)