Abstract
Traditional transmission control protocol reduces its performance by misinterpreting mobility losses due to node motion as congestion losses in wireless mobility network. While it has been shown that TCP Vegas provides better performance compared to TCP Reno, studies have identified various issues associated with the protocol in mobile ad hoc networks. This paper proposed adaptive congestion control scheme based on Traditional TCP. The key idea of our approach is to monitor permanently the TCP flow and record useful data to infer the current state of mobility ad hoc networks when packet losses are perceived, distinguish losses packets between bit error and congestion based on fuzzy logic theory, then based on wireless network link state, such as bit error, network congestion, or rerouting, Appropriate congestion control algorithm be choose to overcome limitations. Our experiments show that the scheme is able to avoid oscillation of TCP sender congestion window, and obtain more throughput than traditional transmission control protocol.
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