Sharing the dream The consensual hallucination offered by the - - PowerPoint PPT Presentation

Sharing the dream The consensual hallucination

• ffered by the Bundle Protocol

Lloyd Wood, Daniel Floreani, Peter Holliday, Wes Eddy

e-DTN workshop, ICUMT, St Petersburg, 14 October 2009.

Universal understandings Universal understandings Universal understandings Universal understandings “Cyberspace. A consensual hallucination experienced daily by billions of legitimate operators, in every nation”

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every nation”

• - William Gibson, Neuromancer.

Hugo, Nebula, Philip K. Dick awards.

IP is now universally adopted. IP provides us with that shared

• hallucination. (As does the web.)

The bundle protocol is not yet shared The bundle protocol is not yet shared The bundle protocol is not yet shared The bundle protocol is not yet shared

Possible user communities testing bundling: Civil space satellites for the “Interplanetary Internet,” where bundling began before undergoing scope creep.

• Sharing the dream

3

Military (via DARPA) Reindeer herders (social networking) Do these communities need to talk to each other? (They do need to talk to the Internet.) What is common, other than the need to talk to the Internet? What needs are shared?

elay/ t

high (> days)

Fixed conditions, long delay favour strong FEC increasing

scheduled deep space

Delay Delay Delay Delay-

• tolerant is not

tolerant is not tolerant is not tolerant is not disruption disruption disruption disruption-

• tolerant

tolerant tolerant tolerant

Very little is common between deep space and terrestrial ad-hoc. What is shared?

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propagation del link stability/t

low (< ms) link up for long periods; down periods scheduled

increasing delay tolerance needed Varying conditions, short delay leads to ARQ + FEC increasing disruption tolerance needed

unscheduled ad-hoc

link intermittently up/down; not known in advance

Internet

core

Internet

core

What does the Bundle Protocol add? What does the Bundle Protocol add? What does the Bundle Protocol add? What does the Bundle Protocol add?

IP gave the ability to share computing resources, via telnet and ftp, way back when. telnet and ftp became the ‘killer apps’ that helped drive adoption of IP. (Now, the web helps drive adoption.)

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What is the ‘killer app’ for the Bundle Protocol? Given that sensor networks have different requirements leading to very different implementations, what is gained by doing the work (time, cost, engineering) to support the Bundle Protocol? These are questions that need to be asked. These are questions that need to be asked. These are questions that need to be asked. These are questions that need to be asked.

Questions?

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Questions? Thank you