Position Issues in Ad Hoc

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Position Issues in Ad Hoc WLAN
Special Lab Seminar

• Huazhi, Gong
• 2004/ 04/ 24
• hankgong_at_netmedia.kjist.ac.kr
• Networked Media Laboratory
• Dept. of Information Communications
• Kwang-Ju Institute of Science Technology

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Research Overview Slide

• Background Motivation
• Main Technical Components
• Contributions Related works
• Results Expected Results

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Background Motivation

• Ad hoc Mobility Pattern Effects
• Most of the simulation research based on simple
  mobility pattern (Random Waypoint)
• At every instant, a node randomly chooses
  uniformly randomly from 0, Vmax, where Vmax is
  the maximum allowable velocity.
• However, many research showed that Random
  Waypoint Mobility model cant really simulate the
  true world.
• RPGM (reference point group model)
• Positioning in WLAN (course project)
• Indoor positioning without additional hardware

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Main Technical Components
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Contributions Related works

• IMPORTANT ( Impact of Mobility on Performance of
  RouTing protocols for Adhoc Networks )
• From Fan Bai, USC, IEEE Infocom 2003
• Compare prevailing existing unicast ad hoc
  protocols
• DSDV, AODV, DSR
• Geocast Mobility Pattern
• From Tracy Camp, U of Colorado School of Mines
• Geocast proposed and patterns generating code
• Positioning in WLAN
• RADAR from Microsoft 2000
• Probabilistic Clustering-Based Indoor Location
  Determination System ( Ubiquitous Computing
  2001 )
• Contribution
• Implement mobility patterns analyze in
  multicasting
• System implementation of Positioning in WLAN

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Results Expected Results

• Protocols combined with NS systems
• MAODV
• Geocast
• Mobility Pattern file generated
• Expected results
• Comparing to Random waypoint, other patterns show
  somewhat difference performance
• Mobility patterns effect in protocol design
• Positioning ability