Today’s streaming applications typically use TCP or UDP to transmit media over the Internet. However, streaming over UDP is problematic due to firewalls that restrict UDP penetration and because of the potential for excessive congestion induced by unresponsive UDP flows. Streaming over TCP is also troublesome because media scaling is difficult given current TCP’s application programming interfa...

We investigate the energy-saving potential of transport protocols. We focus on the system-related aspect of energy. Do we have to damage or enhance system fairness in order to provide energy efficiency? We depart from defining protocol potential; we compare different transmission strategies and protocol mechanisms; and we report our results on the impact of each mechanism on system energy. We h...

This paper proposes an approach, called Protocol Configuration Decision Maker, for TCP to dynamically adapt to a network environment. The proposed mechanism monitors the network condition with parameters like loss rate. Then it consults a knowledge database to see whether a better performance can be achieved and replaces a relevant TCP module with the one instructed by the database. Through sim...

This document describes a new cryptographic protocol that allows the efficient authentication of an unlimited amount of data coming from an IC Card by an off-line terminal where the IC Card’s cryptographic capability is limited to computing one-way functions and MACs. The authentication of the IC Card and its data are based on a Challenge-Response protocol using one-way functions. The protocol ...

This paper describes the design and implementation of a multicast transport protocol called RMTP. RMTP provides sequenced, lossless delivery of bulk data from one sender to a group of receivers. RMTP achieves reliability by using a packet based selective repeat retransmission scheme, in which each acknowledgment (ACK) packet carries a sequence number and a bitmap. ACK handling is based on a mul...

The performance of le transfer applications running over B-ISDN is investigated, taking into account both the impact of the ATM layer protocols and the features of the adopted transport protocol. Two transport protocols in particular are considered: TCP and XTP. The two transport protocols have quite diierent characteristics: while TCP is a window-based protocol, XTP is rate-based; while TCP co...