The Personal ServerChanging the Way We Think About Ubiquitous Computing

Roy Want, et al. / Intel ResearchUBICOMP 2002

Nov. 21. 2005Seungjae Leesjlee@mmlab.snu.ac.kr

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Device capability and Mobile affordance

Display/Input Capability

Mobile

Aff

ord

an

ce

The Personal ServerCell phones

PDAs

Laptops

Desktops

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The Personal Server

Features Large display Full-sized keyboard Small enough to carry

How this can be done?Large-screen PCs are everywhere!

an airport a trade showa commercial district

The Personal Server

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The Personal Server

No display Very limited input method High-density storage Low-power communication Short-range wireless capability

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Contents

IntroductionImplementation <

Mobile Platform System Architecture Applications and Usage Models

Architectural Issues & Future WorkConclusion

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Mobile Platform

No real display or keyboardThe device is only accessible via the wireless

link

High performanceprocessor

Low powershort range radio

High densitystorage

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System Architecture

FILE VIEWER

IEXPLORER

PERSONAL SERVER(Linux)

ACCESS HOST (Windows XP)

TCP/IP Connectivity

WEBSERVER

WEBDAV

DISCOVERY

BLUETOOTH

WINDOWS XP

PAN PROFILE

RADIO

LINUX

DISCOVERY

BLUETOOTH

PAN PROFILE

RADIO

HTTP Transactions

Wireless Baseband

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Applications and Usage Models

Web browsing Mobile personal webpage Bookmarks, address book, …

Wireless file access Operates like an USB memory device

Remote control E.g. Presentation sourced from a personal

server

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Architectural Issues & Future WorksDiscovery delayPrivacy & securityAdaptive user interfacesUsage modelsPower managementDistributed file systemsMobile executionIndustrial design

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Conclusion

Utilizing computers in the local environment Considerably improves the mobile user

experience Allows the mobile device itself to disappear

from a users interaction

Enabling factors High-density portable storage devices Low-power, high-performance processors Short-range, low power wireless standards Extensive public computing infrastructure

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This paper was published in

JUNE 2002

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Then how’s the personal server

NOWADAYS?

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The Personal Server, Practically

Main limitation Computers must be equipped with wireless device.

The alternatives

energy

deployment

Environment Solution

Without Internet access USB drive

With Internet access Web Service

With RICH Internet access Windows Terminal Service

An energy barrier!