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Efficient Flooding Scheme Based on 2-Hop Backward Information in Ad Hoc Networks
Trong Duc Le and Hyunseung ChooSchool of Information and Communication Engineering
Sungkyunkwan University, KoreaICC 2008
Speaker : Zhi-Han Lin
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Outline
Introduction Flooding scheme using 1-Hop Information
(1HI) Flooding scheme using 2-Hop Backward
Information (2HBI) Performance Evaluation Conclusion
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Introduction
Flooding is a basic operation to propagate control messages in most ad hoc routing protocols.
Pure flooding causes severe redundant transmissions, congestions of the wireless media, and collisions in networks.
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Each node maintains the 1-hop neighbor information to locally optimize the number of RNs at the next hop.
The number of RNs (retransmitting nodes) is still relatively high.
The RNs are densely distributed along the network border.
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Performance Evaluation
By using the ns-2 simulator. Compare the pure flooding, Edge Forwarding,
CDS-based flooding and 1HI with 2HBI. Evaluate the performance of the ‘ratio of retr
ansmissions’ and ‘the number of collisions’.
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Conclusion
The proposed scheme achieves its aim of minimizing the number of RNs and collisions in the network while maintaining the high deliverability of the flooding message.
The proposed scheme is suitable for its application to other ad hoc protocols in order to achieve a better flooding performance.