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Performance Comparison of OLSR and AODV in Mobile Environments

This presentation details the performance analysis of the Optimized Link State Routing (OLSR) and Ad hoc On-Demand Distance Vector (AODV) protocols in a mobile networking context. The study focuses on varying mobility conditions, network topology changes, and node accessibility. Results are based on multiple scenarios assessing packet delivery fraction, end-to-end delay, and throughput. Future work aims to identify causes for delays in data transfer resumption after link disruptions. The analysis provides insights valuable for optimizing routing protocols in mobile networks.

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Performance Comparison of OLSR and AODV in Mobile Environments

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Presentation Transcript

  1. Final Presentation CS492 8, 9조 2005-12-13

  2. Table of Contents • Goal • Model • Three Scenarios • Metric • Result • Future work

  3. Goal • Mobility 환경에서 OLSR, AODV의 실제 성능 비교 측정

  4. Model • Mobility에 따른 network topology의 빈번한 변화를 node의 On/Off로써 모델화 • Node 간의 접근성 차단 • MAC Layer

  5. Three Scenarios • On/Off 빈도 • Offered load • Background CBR • 250m 소요시간0km/h infinite      5km/h 180 secs     10km/h 90 secs     50km/h 18 secs    100km/h 9 secs    150km/h 6 secs • Fixed: OL(300kbps)            BCBR (0 kbps) • Varied: On/Off frequency • Offered Load   - Fixed: On/Off Frequency (18secs)             Background CBR (0kbps)   - Varied: Offered Load 30, 50, 150, 300, 400 kbps • Background CBR   - Fixed: On/Off Frequency (18secs)             Offered Load 300kbps   - Varied: Background CBR 0, 50, 100, 150 kbps t/3secs -> t/3secs -> t/3secs ->     -----------------------------------------------      o o o -> x o o -> x x o      x x x -> o x x -> o o x     -----------------------------------------------      -> x x x -> o x x -> o o x -> o o o -> ..      -> o o o -> x o o -> x x o -> x x x -> ..     -----------------------------------------------

  6. Metric • Packet delivery fraction • 도착한 packet 수/ 보낸 packet 수 • Average end-to-end delay of data packets • 현재 packet 별로 측정 불가 • Normalized routing load • 현재 측정 불가 • Throughput • bps

  7. Result – Scenario 1

  8. Result – Scenario 1

  9. Result – Scenario 1 Iperf log

  10. Future Work • Link 단절 후 data transfer 재개까지 시간이 오래 걸리는 원인 파악 • Scenario 1, 2, 3 진행

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