Abstract
In this paper, we propose a prediction-based transmission control protocol (P-TCP) for wireless ad hoc networks that takes feedback from network layer to detect different types of packet losses and adjusts its parameters dynamically according to the varying network environment. Our proposed protocol predicts the values of the control parameters congestion window, congestion window limit, round trip time, and retransmission timeout from their previous state values. A security mechanism has been integrated with the protocol to make it usable in the highly vulnerable wireless ad hoc networks. A low complexity identity-based public key cryptography is proposed that generates a secret session key between source and destination nodes. The three-way handshaking process of P-TCP is secured using this secret session key. Performance comparison along with security analysis shows that the scheme is more efficient and secured compared to similar existing schemes. Simulation results show that P-TCP outperforms the popular New Reno and Ad hoc TCP protocols in terms of throughput and end-to-end delay in three standard network scenarios.
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