The Case for Opportunistic Communication Hossein Falaki Feb 28, - - PowerPoint PPT Presentation

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The Case for Opportunistic Communication Hossein Falaki Feb 28, - - PowerPoint PPT Presentation

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The Case for Opportunistic Communication Hossein Falaki Feb 28, 2008 University of Waterloo Tetherless Computing Lab School of Computer Science University of Waterloo, Ontario, Canada University of Waterloo Tetherless Computing Lab S.

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The Case for Opportunistic Communication

Hossein Falaki Feb 28, 2008

Waterloo

University of

Tetherless Computing Lab School of Computer Science University of Waterloo, Ontario, Canada

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Hossein Falaki

Waterloo

University of

Tetherless Computing Lab

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  • S. Keshav

Aaditeshwar Seth Shimin Guo Matei Zaharia David Hadaller Earl Oliver Sumair Urahman Usman Ismail Nabeel Ahmed Hossein Falaki

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

Vision (2002)

Untethered mobile devices will communicate with resource-rich data centers over wireless and wireline networks Why? Computing costs are plummeting Wireless networks are proliferating Data centers aggregate resources

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Hossein Falaki

Waterloo

University of

Opportunities

Assume that any mobile node can communicate opportunistically with any other node, fixed or mobile New applications: Wireless P2P content dissemination Mobile social networking Opportunistic/mobile blogging Drive through Internet ...

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

Categories

One hop Campaignr One hop to a ferry KioskNet, GaTech message ferry, Data Mules More than one hop Haggle, DieselNet, ZebraNet

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Hossein Falaki

Waterloo

University of

What is common?

Non-intrusive opportunistic communication Disconnection, disruption, and delay tolerance High bandwidth Low cost

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

Communication Requirements

Legacy compatible Minimal change to clients and servers Maximum use of communication

  • pportunities

Support for single- and multi-hop communication Over-the-air security Session persistence despite mobility and disconnection

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Hossein Falaki

Waterloo

University of

System Requirements

Autonomous NIC management Find and use the best NIC, now and in the future Turn costly NICs on, only when there is an

  • pportunity to save power

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

OCMP

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Hossein Falaki

Waterloo

University of

Software Architecture

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Hossein Falaki

Waterloo

University of

OCMP Applications

Each app has two parts: The client side The proxy plug-in Example applications: OMail OTube OFlickr

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

KioskNet

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Hossein Falaki

Waterloo

University of

Software Architecture

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Hossein Falaki

Waterloo

University of

Implementation

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Hossein Falaki

Waterloo

University of

KioskNet Apps

OMail To send and receive emails to any Internet user or KioskNet user OTube To subscribe to and download videos from YouTube or any other video feed OFlickr To upload photos on Flickr

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Hossein Falaki

Waterloo

University of

Outline

Vision Taxonomy Requirements Architecture KioskNet Challenges

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Hossein Falaki

Waterloo

University of

Multiple NICs

Scheduling over multiple NICs

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Hossein Falaki

Waterloo

University of

Enabling the NIC

When to turn on costly NICs

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Hossein Falaki

Waterloo

University of

Open Problems

Cooperative scheduling Routing Credibility

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Hossein Falaki

Waterloo

University of

Summary

Opportunistic communication allows new classes of applications OCMP provides a platform for opportunistic communication Interesting research problems Ease of mobile application development

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The Case for Opportunistic Communication

Hossein Falaki Feb 28, 2008

Waterloo

University of

Tetherless Computing Lab School of Computer Science University of Waterloo, Ontario, Canada