The Interplanetary Internet, Vint Cerf Speaking

Vint Cerf, one of the fathers of the Internet, is working on expanding the 'net into outer space. Cerf has worked with NASA and JPL to develop a new set of protocols that can stand up to the unique environment of space, where orbital mechanics and the speed of light make traditional networking extremely difficult.


(The Internet goes off-planet)

"So we began looking at the possibilities of TCIP/IP as a protocol for interplanetary communication. We figure it worked on Earth and it ought to work on Mars. The real question was, “Would it work between the planets?” And the answer turned out to be, “No.”

"The reason for this is two-fold: First of all, the speed of light is slow relative to distances in the solar system. A one-way radio signal from Earth to Mars takes between three and half and 20 minutes. So round trip time is of course double that. And then there’s the other problem: planetary rotation. If you’re communicating with something on the surface of the planet, it goes out of communication as the planet rotates. It breaks the available communications and you have to wait until the planet rotates back around again. So what we have is variable delay and disruption, and TCP does not do terribly well in those kinds of situations.

"One of the things that the TCP/IP protocols assume is that there isn’t enough memory in each of the routers to hold anything. So if a packet shows up and it’s destined for a place for which you have an available path, but there isn’t enough room, then typically the packet is discarded.

"We developed a new suite of protocols that we called the Bundle protocols, which are kind of like internet packets in the sense that they’re chunks of information. They can be quite big and they basically get sent like bundles of information. We do what’s called storing forward, which is the way all packet switching works. It’s just in this case the interplanetary protocol has the capacity to store quite a bit, and usually for quite a long time before we can get rid of it based on connectivity to the next hop.

This software is already in use in the two orbiters around Mars, as well as the Spirit and Opportunity rovers.

Science fiction writer (and communications engineer) George O. Smith thought about this problem in the 1940's. His solution? Venus Equilateral Relay Station:

The Venus Equilateral Relay Station was a modern miracle of engineering if you liked to believe the books. Actually, Venus Equilateral was an asteroid that had been shoved into its orbit about the Sun, forming a practical demonstration of the equilateral triangle solution of the Three Moving Bodies. It was a long cylinder, about three miles in length by about a mile in diameter...

This was the center of Interplanetary Communications. This was the main office. It was the heart of the Solar System's communication line, and as such, it was well manned. Orders for everything emanated from Venus Equilateral.

Be sure to read the rest of this fascinating interview with Vint Cerf at Wired.

Scroll down for more stories in the same category. (Story submitted 5/9/2013)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Space Tech ")

Michelin Self-Sealing Tires On Ford's Explorer
'...a seal of compressed plastifoam to save the air.' - Jack Williamson, 1941.

Mining Of Golden Asteroid Foretold In 1898 Science Fiction
'This must be a golden planet—this little asteroid.' - Garrett P. Serviss, 1898.

Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.' - Ray Cummings, 1930.

Starshade Will Help Space Telescope To Search For Exoplanets
'When it found planetary systems in its field, automatically shifted upon them a higher powered telespectroscope ...' - Edmond Hamilton, 1936.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Nobe 3-Wheel Electric Vehicle Parking Like I, Robot
Spidercar, Spidercar, does whatever a spidercar does.

Michelin Self-Sealing Tires On Ford's Explorer
'...a seal of compressed plastifoam to save the air.'

Mushroom Eats Plastic, Saves Planet
Fungus Amongus, SaveUs!

Juggalo Face Paint Disrupts Facial Recognition
'... designed to foil facial recognition systems.'

Mojipic Smart Voice Vehicle Emojis
KITT, what's your response?

Unusual Twist On Woman Dates Robot
'My hearing, vision and awareness went along with that excellent imitation of a young Adonis...'

BrainNet Triple Telepathic Gaming Threat
'In the gloomy half-darkness the three idiots sat babbling.'

AVAS Noisemakers Required For EVs By EU
'...a sound tape to supply the noise of a soi-disant "[internal combustion]" engine...'

Pun Generation Via Neural Nets
'You said you wanted him to be able to distinguish between laugh-power in different gags...'

Blood Battery Robotic Fish
'With one fluid motion, it surged forward, plunged, and was gone.'

Lightyear One Solar-Powered Electric Car (Design By Heinlein)
'It drew its power from six square yards of sunpower screens on its low curved roof.'

'Agression Detectors' Don't Work When Spying On Students
'The professional agitators had also learned how to modulate their voices below the danger level...'

Mining Of Golden Asteroid Foretold In 1898 Science Fiction
'This must be a golden planet—this little asteroid.'

Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.'

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...'

CNSILK Robotic Spider Builder
'We could certainly spin a web right through the Solar System, if we can think of a good use for one.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.