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Exploiting Infrastructure Resources to support Mobile Computing. CS-630 Distributed Mobile Systems Srividya, Ramkishore, Prakash and Kartik. Motivation. Virtual Network Computing Pebbles PalmVNC. Objectives. Discover a desktop on a wired LAN Transport the display of the PDA to desktop

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Exploiting infrastructure resources to support mobile computing

Exploiting Infrastructure Resources to support Mobile Computing

CS-630 Distributed Mobile Systems

Srividya, Ramkishore, Prakash and Kartik


Motivation
Motivation Computing

  • Virtual Network Computing

  • Pebbles

  • PalmVNC


Objectives
Objectives Computing

  • Discover a desktop on a wired LAN

  • Transport the display of the PDA to desktop

  • Control the Applications of the PDA


Methodology
Methodology Computing

Phase 1:Simple Advertisement Protocol

-Discovery protocol

Phase 2:Transport of Display

-DDB to DIB format

-Encoding algorithm

Phase 3- Transport of Control

-Trap mouse movement and keyboard events.


Architecture
Architecture Computing


Comparison

Virtual Network Computing Computing

- only Pixel function used in device driver

- compression is application specific

- directly deals with frame buffer

PDA Display porter

- uses pixel and line functions in device drivers.

- run-length coding

- common APIs

Comparison


References
References Computing

“RFB Protocol” Tristan Richardson, Kenneth. R. Wood , Cambridge version3.3 Jan 1998 revised July 1998

“Bandwidth usage Analysis of Service Location protocol” Michael Barbeau , Carleton University, Ottawa, Canada.

“Borland C++ 4.0 programming for Windows” Paul Yao

“Fundamental Challenges in Mobile Computing” Proc.PDOC’96 Philadelphia , USA 1996

Talk: “Using handheld computers and PCs together” (an overview of Pebbles project)

http://www-2.cs.cmu.edu/~pebbles/#papersandtalks

http://msdn.microsoft.com/library/

http://support.microsoft.com/support/kb/articles/q83/4/56.asp

http://www.ietf.org

http://www.salutation.org

http://uk.research.att.com/teleport

“Differential X Protocol Compressor”- http”//www.vigor.nu/dxpc/


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