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Wireless Internet (WIN)
WIN subset of WMN
Evaluate WMN performance under various protocols and schemes.
IEEE802.11x DCF (Andrew Symington)
OLSR Routing Protocol(Stephen Asherson)
9 May 20072
Experiments with a hardware testbed
Software simulation
Analytical modelling
Limitation and Tradeoff
9 May 20073
DNA’s wireless hardware testbed
MERAKA Institute, Pretoria• 49 node wireless mesh
Andrew Symington
Other: MIT Roofnet, UCSB MeshNet, …
9 May 20075
Experiments with a hardware testbed
Software simulation + Analytical modelling
Software Testbed
9 May 200710
Bring together simulation and analytical modelling in one tool
Three components:• Machine model• Network workload• Reporting mechanism
9 May 200711
Machine modelNodes, links, protocols, schemes, …
Network WorkloadNetwork parameters (Inter-arrival time
distributions, mean packet length, …)
Reporting mechanismSame for analytical approach and simulation
Parameters to report• Mean throughput• Mean response time• Utilisation• Mean queue length
9 May 200712
Compare analytical and simulation results …
… and possibly the hardware testbed
Success = (achieving our goal)
Meeting software testbed requirements +
evidence of a correctly working tool
9 May 200713
1-2 August• Demonstrate prototype
15 Oct• Report: first draft
19 Oct• Final Report Hand-in
23 Oct• Poster and Web page
hand-in
14-15 Nov• Final Project Presentation
9 May 200714
Human Resources• Andrew Symington (AS) - User• Stephen Asherson (SA) - User• Paolo Pileggi (PP)• Pieter Kritzinger (PSK) - supervisor
Requirements: PP, AS & SA
Design: PP, AS & SA
Development: PP
Testing: PP & AS (possibly)
Reporting, Web page, Poster & presentation: PP
9 May 200715