Simulation analysis of bi-directional traffic characterization over wireless ad hoc networks

The interaction between transport layer and MAC layer is very complex. Yet, understanding this relation is essential for devising an efficient protocol that maximizes the network throughput in a fair manner and minimizes the access delay. The effort in this paper focuses on examining all possible interference modes arising among two interfering Bi-directional traffic like TCP for one-hop connections under a Two-Disc model of interference. We believe that this work is the first in the literature that analyzes the TCP similar traffic flows under all these possible link interactions. Using ns-2, we run extensive simulation experiments for all possible link configurations. The results identify several performance groups. In particular, we are able to identify which configurations will lead to unfairness problem.

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