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Protocol architecture for multimedia applications over ATM networks

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3 Author(s)
D. D. Kandlur ; Dept. of Commun. Syst., IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; D. Saha ; M. Willebeek-LeMair

At the data-link layer, ATM offers a number of features, such as high-bandwidth and per-session quality-of-service (QoS) guarantees, making it particularly attractive to multimedia applications. Unfortunately, many of these features are not visible to applications because of the inadequacies of existing higher-level protocol architectures. Although there is considerable effort underway to tune these protocols for ATM networks, we believe that a new ATM-specific protocol stack is essential to effectively exploit all the benefits of ATM. We describe the semantics of such a protocol stack, and discuss its advantages over traditional protocol architectures from the perspective of multimedia applications. The performance impact of the new protocol architecture is experimentally demonstrated on a video conferencing testbed built around IBM RS/6000's equipped with prototype hardware for video/audio processing, and connected via ATM links

Published in:

IEEE Journal on Selected Areas in Communications  (Volume:14 ,  Issue: 7 )