Ad-Hoc, Mobile, and Wireless Networks: Second International by Henri Dubois-Ferrière, Matthias Grossglauser (auth.), Samuel

By Henri Dubois-Ferrière, Matthias Grossglauser (auth.), Samuel Pierre, Michel Barbeau, Evangelos Kranakis (eds.)

This e-book constitutes the refereed lawsuits of the second one foreign convention on Ad-Hoc Networks and instant, ADHOC-NOW 2003, held in Montreal, Canada in October 2003.

The 23 revised complete papers and four revised brief papers awarded have been rigorously reviewed and chosen from forty two submissions. All present elements of ad-hoc networking, cellular, instant, and cooperating communique structures are addressed together with community architectures, entry regulate and discovery, multicasting protocols, functionality, caliber of carrier, QoS, routing protocols, scalability, safeguard, and self-configuration.

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Extra info for Ad-Hoc, Mobile, and Wireless Networks: Second International Conference, ADHOC-NOW2003, Montreal, Canada, October 8-10, 2003. Proceedings

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An overview of free space, two-ray ground and shadowing propagation models are provided in Section 2. Section 3 analyses the impact of a shadowing model on the performance of routing protocols, and presents our proposal. Section 4 contains the simulation results under different mobility patterns and parameters. Section 5 draws our conclusion and directions for future research. A more detailed introduction to DSR and AODV can be found in [3] [5]. 2 Propagation Models The free space propagation model is used for the situation when the transmitter and receiver have a clear line-of-sight path.

Our results show that DSR outperforms AODV in the scenarios we consider. These results agree with the observations made in a similar context in [5] where the protocols were compared in terms of their path optimality and other performance measures. Also, the MERIT spectra which plots the MERIT ratio against various network parameters of interest show that the MERIT ratio intuitively captures the network dynamics and behaves as expected. In our ongoing work, we are evaluating the performance of routing protocols implemented in different network simulators to verify the implementation independence, and scalability aspects of the MERIT framework.

A node receiving the RREQ packet may send a RREP if it is either the destination or if it has a route to the destination with corresponding sequence number greater than or equal to that contained in the RREQ. Otherwise, it rebroadcasts the RREP. As a RREP propagates back to the source, nodes set up forward path entries to the destination in their route tables. Once the source node receives the RREP it may begin to forward data packets to the destination. There are several differences in the route discovery mechanisms of DSR and AODV.

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