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The performance of the congestion control algorithms of most of the reliable transport protocol of internet, particularly wireless networks and mobile ad-hoc networks, are not satisfactory under a high density sensor network applications, since they are designed mainly for wired networks and not for sensor networks. In this paper, the authors evaluate the performance of some of the popular transport protocols on a congested sensor network scenario. The transport protocols considered for evaluation are Transmission Control Protocol (TCP), User Datagram Protocol (UDP) and Stream Control Transmission Protocol (SCTP). The implementation and the evaluation of these selected protocols in the sensor network are done using Network Simulator (NS2).
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