Analysis of XCP in a Wireless Environment

Previous works on TCP have shown instability and inefficiency when there is non-congestion loss present i n the network. The eXplicit Control Protocol was designed to increase stability and efficiency of high bandwidth-delay product networks. To do this XCP has decoupled its fairness and effici ency controller and provides explicit feedback. We do a comparison of the two transport layer protocols to find out if XCP performs better than TCP with non-congestion related loss. We examine several properties of the eXplicit Control Protocol which we believe can improve throughput in lossy wireless networks. We also examine shortcoming of the XCP protocol which are brought into focus over wireless networks, causing instability and inefficiency. We show that while XCPis not perfect in a shared medium, it does perform better than TCP, and in certain cases, achieves 200% throughput over TCP.

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