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 ")

Artificial Gravity? Why Not?
'The artificial gravity-controls in the base of the ship... were being tampered with!' - Ray Cummings

NASA Misses $5Trillion Funding Boost
'This must be a golden planet—this little asteroid.' - Garrett P. Serviss, 1898.

LightSail Solar Sail Deploys
'This was the first time any solar yacht had ever attained it...'- Arthur C. Clarke, 1964.

Suit Up! Fifty Years Of Spacewalks Video
'I experienced for a few minutes the delicious, indescribable pleasure of being a little planet...'- Garrett P. Serviss, 1898.

 

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

Organoids Galore!
'Runciter's body contained a dozen artiforgs...'

Artificial Gravity? Why Not?
'The artificial gravity-controls in the base of the ship... were being tampered with!'

Hackers Can Take Control Of Cars From Anywhere In The World
'The car faltered as the external command came to brake...'

Armed Drone Opens Fire
'Each a television eye and a sonic stunner...'

Robotic Exoskeleton Releases Man From Wheelchair
'This man was standing on two corrugated-soled titanium footplates...'

Oh, Just Let Robots Run Airports
I'd like a friendly robot to help me at airports.

How Smart Should AI's Be Allowed To Get?
'Every AI ever built has an electromagnetic shotgun wired to its forehead'

NASA Misses $5Trillion Funding Boost
'This must be a golden planet—this little asteroid.'

Kuwait Creates Mandatory DNA Database For Citizens
And who has the largest DNA database on its citizens?

Please, Please Let There Be Regenerated Teeth
'Toothbud transplants...'

Google AI 'Deep Dreams' Kubrick's 2001
'I was only trying to do what I thought best....'

The BLITAB: First Tactile Tablet for Blind People
Absolutely amazing development - now blind people can read the web!

Why, Oh Why, Must We Develop Robots That Run Faster Than I Do?
'The legs are long, curled way up to deliver power, like a cheetah's.'

Golf Robot Putts Out
'The robot solemnly hit a ball against the wall, picked it up and teed it, hit it again, over and again...'

Computer Finds Cancer Doctors Miss
The computer will see you now.

Would Robot Taxis Ease Carbon Emissions?
'He emerged and flagged down a robot taxi...'

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.