Network/Cross-layer Collaboration-based Transport Protocol for DSA+V2V Communication

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In cognitive radio mobile ad hoc networks (CogMANET), channel switching is inherently necessary whenever a primary user with a license appears on the channel. In such cases, the communication characteristics also change in terms of bottleneck bandwidth and RTT. In response to this change, TCP has to adaptively update its congestion window size (cwnd) to make an efficient use of the available wireless resources. Hence, we propose the new TCP, TCP CoBA, which updates the cwnd based upon the available buffer space in the relay node as well as the bandwidth-delay product (BDP). Through simulations, we showed the effectiveness of TCP CoBA.