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In wireless ad hoc networks, the over-fast growth rate of TCP congestion window is one of the main factors that lead to frequent link contention and routing failure. Based on recent research, this paper proposes a cross-layer design protocol that adaptively adjusts routing failure verifying policy and TCP congestion window growth rate based on link contention state sensing. Simulation results show that this cross-layer design protocol notability improves the system throughput and decreases the network delay, on the other hand, it is fit for different traffic load over different topology networks.
Date of Conference: 12-14 Oct. 2008