1 / 17

Ad-Hoc Networking on Wireless Devices

Ad-Hoc Networking on Wireless Devices. Ben Hilldore Advisor: Dr. Alvin Lim 8/07/2003. Goals. Get Ad-hoc mode working on Zaurus Communicate using a multi-hop protocol Transfer large amounts of data in an ad-hoc environment

jemima
Download Presentation

Ad-Hoc Networking on Wireless Devices

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ad-Hoc Networking on Wireless Devices Ben Hilldore Advisor: Dr. Alvin Lim 8/07/2003

  2. Goals • Get Ad-hoc mode working on Zaurus • Communicate using a multi-hop protocol • Transfer large amounts of data in an ad-hoc environment • Implement a service oriented ad-hoc network to facilitate sensor monitoring and data collection

  3. Infrastructure Vs. Ad-Hoc • Infrastructure • Centralized network • Device must communicate through central routing points • Ad-Hoc • No central structure • Devices can communicate directly

  4. Infrastructure • Devices must communicate through central point 192.168.0.5 192.168.0.2 192.168.0.1 192.168.0.4 192.168.0.3

  5. Infrastructure • Devices must communicate through central point 192.168.0.5 192.168.0.2 192.168.0.1 192.168.0.4 192.168.0.3

  6. Infrastructure • Devices must communicate through central point 192.168.0.5 192.168.0.2 192.168.0.1 192.168.0.4 192.168.0.3

  7. Ad-Hoc • No centralized structure • Nodes communicate directly or through intermediary node

  8. Ad-Hoc • Example of Ad-Hoc • .2 wants to send a file to .5 192.168.0.4 192.168.0.2 192.168.0.5 192.168.0.3

  9. Ad-Hoc • Example of Ad-Hoc • .2 wants to send a file to .5 192.168.0.4 192.168.0.2 192.168.0.5 192.168.0.3

  10. Ad-Hoc • Example of Ad-Hoc • .2 wants to send a file to .5 192.168.0.4 192.168.0.2 192.168.0.5 192.168.0.3

  11. Zaurus SL-5600 • Specs • 400MHz Intel XScale Processor • 32MB Ram, 64MB Flash • Embedix Qtopia • Embedded Linux • Comparable to Desktop Linux

  12. Zaurus Development • Compiling on the Zaurus is impractical • Not enough memory • Not enough storage • Embedded Linux does not have many libraries that desktop Linux does • Instead, we cross-compile • Strong-Arm cross-compiler • Originally for SL-5500

  13. Progress • Have Zaurus running in Ad-hoc wireless mode • Successfully cross-compiled Diffusion on to the Zaurus • Simple Diffusion Ping application demonstrates multi-hop communication in an Ad-hoc environment

  14. Progress – Cont. • Have a service oriented application running on Linux PC’s.

  15. ? 192.168.0.5 Lookup Server Example 1) File Server Registers with Lookup Server 2) Client Requests File 3) Lookup Server Notifies Client that 192.168.0.5 provides that service 4) Client Sends Request to File Server for File File Server 5) File Server Sends File 192.168.0.5 192.168.0.5 Lookup Server 192.168.0.2 Client Client 192.168.0.3 192.168.0.4

  16. Conclusions • Limited librarys for Zaurus makes cross-compiling Lookup Server difficult • New protocol not working • Develop application to discover nodes in range if Diffusion continues to be used

  17. Acknowledgements • Alvin Holting • Kelly Hout • Anurag Pujar • Zaurus Developers Network • National Science Foundation

More Related