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Transmission Scheduling for Mobile Ad Hoc Networks with Multiple-access Interference

Summer Undergraduate Research Experience - 2006. Transmission Scheduling for Mobile Ad Hoc Networks with Multiple-access Interference Ankit Misra Advisor : Dr. Harlan Russell. Background. Analysis. Simulations. Implications. Ad Hoc Networks No Infrastructure Required

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Transmission Scheduling for Mobile Ad Hoc Networks with Multiple-access Interference

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  1. Summer Undergraduate Research Experience - 2006 Transmission Scheduling for Mobile Ad Hoc Networks with Multiple-access Interference Ankit Misra Advisor : Dr. Harlan Russell Background Analysis Simulations Implications • Ad Hoc Networks • No Infrastructure Required • Self-configuring • Temporary • Useful in Disaster Management, Military Conflicts etc. Performance Metrics • Conclusion • Unit-Disk based Schedule • is not collision-free. • easy to analyze. • lowers the re-usage of channel. • EINR based Schedule • more realistic and collision-free. • harder for analysis. • has better channel utilization. dC dC dT dI Transmitter Receiver Interferer Conditions For Collision-free Reception Increasing Density Simulations dI > dC Unit-disk Model EINR Model • Scheduling Protocols • Assigns Transmission Slots • Fair • Adaptive • Collision-Free Better Performance achieved using EINR based Scheduling The above conditions are not consistent with each other in all the cases, which results in 1) Collisions 2) Loss in Utilization in unit disk based schedule. EINR Constant Density Simulations • Future Work • Mobility Performance Simulations • to validate protocol’s performance in mobile conditions • Adaptive Power Transmissions • to minimize the power consumed by the nodes Many of the transmissions scheduled based on unit disk assumption failed. E.g. in a 100 node network 31% transmission failed (see figure) MAI (Multiple-access Interference) Interference caused by simultaneous transmissions by nodes in a network

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