This paper presents the design, implementation and performance of a reliable multicast transport protocol called RMTP. RMTP is based on a hierarchical structure in which receivers are grouped into local regions or domains and in each domain there is a special receiver called a Designated Receiver

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TCP was designed some two decades ago. Since then, significant changes have occurred in the world of communications in terms of technology, heterogeneity of networks, types of applications, quality of links etc. In this report, we discuss how TCP, which is a general purpose transport protocol, can

We explore the performance of reliable data communication in mobile computing environments. Motion across wireless cell boundaries causes increased delays and packet losses while the network learns how to route data to a host's new location. Reliable transport protocols like TCP interpret

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Wireless links have intrinsic characteristics that affect the performance of transport protocols; these include variable bandwidth, corruption, channel allocation delays, and asymmetry. In this paper we review simulation models for cellular, WLAN and satellite links used in the design of transport

As a reliable, end-to-end transport protocol, the Transmission Control Protocol (TCP) uses positive acknowledgements and retransmission to guarantee delivery. TCP implementations are expected to measure and adapt to changing round-trip delay so that their retransmission behavior balances user

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and bottleneck service time. In this paper, we describe a new transport protocol, called DTP, which uses send-time control as its flow control scheme. Preliminary measurements of coast-to-coast connections over the Internet show significant performance improvement over TCP, which is the most commonly used